Mestrado em Odontologia (FO)

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Efeito da ativação ultrassônica na cimentação de pinos de fibra de vidro: análise por tomografia e microscopia óptica
(Universidade Federal de Goiás, 2025-07-10) Oliveira, Patrick Domingues de; Decurcio, Daniel de Almeida; http://lattes.cnpq.br/4640062828556657; Decurcio, Daniel de Almeida; Serpa, Giulliano Caixeta; Estrela, Carlos
Ultrasonic activation (UA) has been proposed as a strategy to enhance endodontic sealer penetration and improve marginal adaptation; however, its effect on the cementation of intraradicular posts remains uncertain. This study evaluated, using cone-beam computed tomography (CBCT) and optical microscopy, the occurrence of failures in the cementation of glass fiber posts subjected to different UA protocols. Forty bovine roots were standardized in length and randomly assigned to four groups (n = 10): G1 – no activation; G2 – sealer activation; G3 – post activation; and G4 – combined activation (sealer and post). The posts were anatomically shaped and cemented with a self-adhesive and self-etching resin cement according to each group’s protocol. After 30 days of storage in saline solution, the samples were analyzed by CBCT to detect failures at the sealer-dentin interface in the cervical, middle, and apical thirds. Subsequently, the roots were sectioned for microscopic analysis of marginal adaptation and classification of failures based on the number of walls exhibiting gaps at the adhesive interface. Statistical analysis (Kruskal-Wallis test; p < 0.05) revealed no significant differences among the groups. It was concluded that the tested UA protocols did not significantly influence the quality of post cementation.
Avaliação do deslocamento de caninos e pré-molares intraósseos e primeiros molares permanentes superiores após expansão rápida da maxila
(Universidade Federal de Goiás, 2025-03-10) Mialichi, Mikaella Gomes; Valladares Neto, Jose; http://lattes.cnpq.br/3536721807622509; Silva, Maria Alves Garcia Santos; Arruda, Karine Evangelista Martins; http://lattes.cnpq.br/8547595943761788; Arruda, Karine Evangelista Martins; Sousa, Thiago Oliveira; Almeida, Guilherme de Araújo
Embargado
Resina flow utilizada como agente de cimentação: microdureza e densidade de ligações cruzadas- estudo in vitro
(Universidade Federal de Goiás, 2025-02-26) Borges, Marina de Almeida Silva; Lopes, Lawrence Gonzaga; http://lattes.cnpq.br/8698234314492960; Lopes, Lawrence Gonzaga; http://lattes.cnpq.br/8698234314492960; Chaves, Ana Paula Rodrigues de Magalhães; http://lattes.cnpq.br/3319767342751521; Carvalho, Andreia Assis; http://lattes.cnpq.br/6623092760228722
Embargada.
Efetividade do selamento de canais radiculares ovais com diferentes técnicas e cimentos de silicato de cálcio, usando navegação em imagens tridimensionais
(Universidade Federal de Goiás, 2025-03-07) Amaral, Maria Teresa Andrade do; Decurcio, Daniel de Almeida; http://lattes.cnpq.br/4640062828556657; Estrela, Carlos; http://lattes.cnpq.br/3611967334176683; Estrela, Carlos; http://lattes.cnpq.br/3611967334176683; Silva, Julio Almeida; http://lattes.cnpq.br/1022830186974104; Serpa, Giulliano Caixeta; http://lattes.cnpq.br/2374096529348644
Embargada.
Relação entre a experiência dos ortodontistas e a solicitação de tomografia computadorizada de feixe cônico (TCFC) integrada ao plano de tratamento ortodôntico com alinhadores: estudo transversal
(Universidade Federal de Goiás, 2025-02-18) Fernandes, Alessah Carolyna de Andrade; Lenza, Maurício Guilherme; http://lattes.cnpq.br/8565025682513578; Silva, Fernanda Paula Yamamoto; http://lattes.cnpq.br/0511229119340734; Silva, Fernanda Paula Yamamoto; Lenza, Marcos Augusto; Jardim, Alexandre Fausto da Veiga
embargo
Análise de disposição a pagar pela radiografia panorâmica e tomografia computadorizada de feixe cônico no tratamento com implantes para espaço desdentado unitário posterior
(Universidade Federal de Goiás, 2023-03-03) Prado, Thayse Bernardes de Paiva; Silva, Fernanda Paula Yamamoto; http://lattes.cnpq.br/0511229119340734; Silva, Fernanda Paula Yamamoto; Perazzo, Matheus de França; Dias, Danilo Rocha
Planning an implant rehabilitation requires a detailed diagnosis, especially in terms of bone quantity and quality, which makes imaging tests indispensable in the diagnosis and surgical planning of implant placement. These tests have costs that, in most cases, are the responsibility of the patient. Economic evaluations of PAD can contribute to the assessment of patient preference, in financial terms. Objective: The aim of this study is to evaluate the patient's willingness to pay (WTP) for panoramic radiography and cone beam computed tomography (CBCT) for implant rehabilitation in a single posterior edentulous space. Methods: This is a crosssectional study of economic analysis nested within a clinical trial carried out by the Nucleus for Research and Prosthesis and Implant (NPPI). Participants were recruited through non-probabilistic convenience sampling and asked about the amount they are willing to pay for each of the exams. Sociodemographic information was collected. Data were analyzed descriptively and through bivariate tests. Results: Forty individuals participated in the study. The median DBH values for panoramic radiography and CBCT were R$ 75.00 (minimum-maximum 0.0 – 150.00) and R$ 300.00 (0.0 – 500.00), respectively. There was no significant difference in DAP when comparing the values between the categories of sociodemographic variables, perception of oral health, dental concern (p<0.05). The correlation between the participant's income and DBH by panoramic radiography (rho 0.091, p=0.575) and by CBCT (rho -0.014, p=0.929) were not statistically significant. Conclusion: The socioeconomic factors studied did not influence the participants' DBH values for panoramic radiography for CBCT. DBH variability by CBCT was greater than DAP variability by panoramic radiography. Studies of PAD by imaging exams are needed to provide scientific evidence about the patient's perception of the costs of these exams and to guide clinical practice.
Avaliação salivar do perfil imune-inflamatório do líquen plano oral e sua relação com parâmetros clínicos de severidade da doença: estudo caso - controle
(Universidade Federal de Goiás, 2025-03-11) Flores, Dryele Ferreira; Mendonça, Elismauro Francisco de; http://lattes.cnpq.br/2305019128015847; Arantes, Diego Antônio Costa; http://lattes.cnpq.br/8341286790648954; Arantes, Diego Antônio Costa; Freitas, Gileade Pereira; Mosconi, Carla
INTRODUCTION: Oral lichen planus (OLP) is a chronic mucocutaneous inflammatory disease of autoimmune nature, which can present in various clinical forms. Although its etiology and clinical behavior are uncertain, studies have highlighted a potential relationship between its pathogenesis and severity with the salivary concentration of mediators involved in the inflammatory process. OBJECTIVE: To evaluate the salivary concentration of pro-inflammatory and anti-inflammatory mediators in patients diagnosed with clinical and microscopic OLP and healthy controls. METHODOLOGY: A case-control study was conducted to investigate the salivary immune-inflammatory profile of patients diagnosed with clinical and microscopic OLP (case group; n=31), according to the criteria established by the American Academy of Oral and Maxillofacial Pathology (AAPOM/2016), and healthy individuals (control group; n=23). All patients were clinically evaluated to record clinical, demographic, and pathological data, as well as for unstimulated saliva collection. Regarding the clinical manifestation, OLP patients were categorized into severe cases (erosive/ulcerated clinical pattern; symptomatic) and non-severe cases (reticular and plaque; asymptomatic). Pro-inflammatory cytokines IL-1, IL-2, IL-6, IL-8, IL-17, IFN-γ, TNF-α, and anti-inflammatory cytokines IL-4 and IL-10 were measured by Cytometric Bead Array (CBA). Mediators associated with oxidative stress (nitrite and MPO) were quantified using the Griess colorimetric method. RESULTS: OLP patients were predominantly female (93.5%) and Caucasian (58.0%). Regarding disease severity, 13 (n=42%) patients were classified as severe cases. The salivary concentration of IL-6, IL-10, and nitrite was significantly higher in OLP patients compared to the control group (p<0.05). Moreover, although not statistically significant, the mean concentrations of IL-17, IL-2, IL-4, and MPO were higher in severe disease cases. Patients with OLP associated with moderate or severe pain exhibited significantly higher nitrite levels compared to controls (p<0.05). CONCLUSION: Salivary levels of the pro-inflammatory mediators IL-6 and nitrite, and the anti-inflammatory cytokine IL-10 were higher in patients with Lichen Planus Oral (LPO) compared to healthy individuals. Furthermore, the salivary concentration of nitrite was higher in LPO cases with greater pain scores. The presence of elevated nitrite levels in saliva may help determine the intensity of symptoms, such as pain and discomfort, which directly affect the well-being and functional capacity of patients. Therefore, monitoring salivary nitrite levels can be crucial for assessing the severity of the disease and, consequently, adapting therapeutic strategies to improve the quality of life of patients with LPO.
Avaliação da segurança e eficácia da terapia fotodinâmica com pirulito de azul de metileno comparada a nistatina para o tratamento da estomatite protética: ensaio clínico randomizado duplo cego
(Universidade Federal de Goiás, 2025-03-06) Mualeite, Egon Bernardo; Costa, Nádia do Lago; http://lattes.cnpq.br/9120865567187887; Costa , Nádia do Lago; Nogueira , Túlio Eduardo; Moreira, Francine do Couto Lima
Embargada.
O serviço de saúde bucal na atenção primária à saúde no município de Goiânia-GO: estudo transversal dos fatores associados à utilização e à satisfação na perspectiva dos usuários
(Universidade Federal de Goiás, 2024-03-04) Anjos, Gabriela Montenegro dos; Jordão, Lidia Moraes Ribeiro; http://lattes.cnpq.br/8872679253627903; Jordão, Lidia Moraes Ribeiro; França, Mary Anne de Souza Alves; Nogueira, Túlio Eduardo
Conteúdo embargado
Influência do nível de experiência do operador na precisão do acesso endodôntico guiado em dentes com canais calcificados: uma revisão de escopo
(Universidade Federal de Goiás, 2024-10-31) Deus, Lara Borges de; Silva, Julio Almeida; http://lattes.cnpq.br/1022830186974104; Decurcio, Daniel de Almeida; http://lattes.cnpq.br/4640062828556657; Decurcio, Daniel de Almeida; Silva, Julio Almeida; González, Álvaro Cruz; Siqueira, Patrícia Correia de
Introduction: Performing conventional endodontic access in teeth with root canal calcification is challenging due to the difficulty in locating and accessing the root canals. This approach can be time-consuming and may pose risks of excessive loss of dental structure, deviations, and even perforations. Guided endodontics emerges as an alternative technique that can facilitate access to the root canal system in teeth with calcifications. Objective: This scoping review aimed to assess the influence of the operator's level of experience on the accuracy of guided endodontic access in teeth with calcified canals. Methodology: The review involved searches in eight electronic databases until August 04, 2024, resulting in the initial identification of 999 records. After removing duplicates and selecting based on titles and abstracts, 31 articles were selected for full-text reading and analysis against the eligibility criteria. Included studies were published between 2019 and 2024 and addressed the influence of operator experience on guided endodontic access. Study evaluation included extracting the following data: study characteristics, objectives, employed methodologies, degree of tooth calcification, operator experience, planning and fabrication of access guides via 3D printing, and instruments used for access. Results: Analysis of the studies revealed significant heterogeneity regarding the models of guides used for guided endodontic access, operator experience, and evaluated parameters (deviation, canal location, wear, and time spent for guided access). However, despite this variability, none of the studies demonstrated a significant influence of operator experience on the accuracy of access guides in teeth with calcified canals. Conclusion: The guided endodontic technique can be a precise and predictable option regardless of the operator’s level of experience, provided it is properly planned and executed.
Efeito da laserterapia de baixa intensidade no controle da dor, edema e trismo pós cirurgias de terceiros molares inferiores
(Universidade Federal de Goiás, 2017-09-21) Prado, Lucianna de Freitas; Silva, Maria Alves Garcia Santos; http://lattes.cnpq.br/8760691456576488; Silva, Maria Alves Garcia Santos; Torres, Érica Miranda de; Garcia, Robson Rodrigues
The use of laser therapy in dentistry for repair of oral tissues is an important auxiliary agent in third molar surgeries, modulating the effects of inflammation and alleviating postoperative symptoms, promoting the reduction of edema and pain, allowing better tissue repair involved. The purpose of this study was to test two protocols of low-intensity laser therapy to evaluate pain control, edema and trismus in the postoperative period of lower third molar surgeries. It is a randomized, double-blind, crossover clinical study. A total of 42 procedures were performed in 21 patients, with the following protocols: "A" protocol: laser application immediately after the surgical procedure, 24 and 48 hours after surgery. Protocol "B": laser application immediately after the surgical procedure and placebo after 24 and 48 hours. The modulation of the apparatus followed the following technical parameters: 660nm, dose of 5 J / cm2, t 10 s, P 20 mW, for applications in 4 intraoral points, and 789 nm, dose of 30 J / cm2, t 20 s / point, P 60 mW, for the application of 8 extraoronal points. The evaluations of the pain, trismus and edema were performed by a blind evaluator, in the following times: immediate postoperative, 24, 48 hours and 7 days after surgery. EVA was used to evaluate the pain, and no statistical differences were observed in the results, although the number of rescue analgesic medication was lower when applied to the "A" protocol. In the assessment of edema, there was no statistically significant difference in any of the protocols used. In the evaluation of trismus, only the evaluation done in the 48-hour PO, obtained a better result for the "A" protocol. It can be concluded that the low intensity laser therapy by the "A" protocol presented better results in the control of trismus and pain, and did not have significant differences for edema between the protocols used
Risco e prevalência de câncer oral em pacientes com diferentes tipos de lúpus eritematoso: uma revisão sistemática e metanálise
(Universidade Federal de Goiás, 2024-02-02) Rodrigues, Larissa Rosa Santana; Silva , Brunno Santos de Freitas; http://lattes.cnpq.br/1575170017237525; Silva, Brunno Santos de Freitas; Silva, Maria Alves Garcia Santos; Silva, Lorena Rosa
Lupus erythematosus (LE) is an autoimmune disease that can manifest itself systemically and/or cutaneous, with several clinical presentations, some of which are: systemic lupus erythematosus (SLE) and discoid lupus erythematosus (DLE). The SLE and DLE forms are those that commonly present the highest risk of malignancy, including oral cancer, thus justifying the review of this entity in the latest update of the group potentially malignant oral disorders (DOPMs). More than 40% of patients with SLE present oral manifestations, including: oral ulcers, lichenoid lesions, leukoplasia lesions, plaques, petechiae, elevated keratotic plaques, purpura and erythematous areas. The literature presents several controversies regarding the relationship between LE and oral cancer, which is why several epidemiological studies have been carried out. With the aim of evaluating the risk and prevalence of oral cancer in patients with SLE or DLE, a systematic review of the literature with meta-analysis was carried out. This review followed the recommendations of PRISMA (Preferred Reporting Items for Systematic Review and Meta-analyses), initially, searches were carried out in the following databases: PubMed, Scopus, EMBASE, LILACS, Web of Science, Scopus and Livivo and, Google Scholar and ProQuest, without restrictions on language or publication date. The reading of the studies was conducted in two phases, independently, in which three reviewers, first, evaluated the titles and abstracts of 3580 studies and, subsequently, carried out the complete reading of 28 works to include the studies according to the criteria pre-defined eligibility criteria. At the end of phases one and two, eight studies were included for data extraction and qualitative analysis, two of which were cross-sectional studies and six were cohorts. The risk of bias was carried out using the JBI critical assessment tool (Joanna Briggs Institute) for analytical cross-sectional studies and cohort studies. The analytical cross-sectional studies were analyzed separately from the cohorts, and, coincidentally, participants in the cross-sectional studies had DLE, and those in the SLE cohorts. Through quantitative data analysis, the pooled prevalence of oral cancer in patients with DLE was 10% (95% CI; 0.03-0.13; I 2 = 59%; p = 0.12). The pooled risk indicated a significantly increased risk of oral cancer in patients with SLE (RR = 2.69; 95% CI, 1.75-4.16; I 2 = 0%; P = 0.78) compared to general population. The present review shows that patients with SLE/DLE have an increased risk of developing oral cancer, and that the oral manifestations of these entities are multiform. Individuals with SLE/DLE should be closely monitored to monitor the oral manifestations of SLE/DLE, and for early detection and treatment of oral cancer when appropriate.
Ansiedade e problema de manejo de comportamento após tratamento odontológico na primeira infância: revisão de escopo
(Universidade Federal de Goiás, 2024-09-02) Alves, Thais Cristina de Souza; Costa, Luciane Ribeiro Rezende Sucasas da; http://lattes.cnpq.br/9906371509661305; Faria, Patricia Correa De; Antunes, Denise Espindola; Costa, Luciane Ribeiro De Rezende Sucasas Da
Introduction: Dental fear/anxiety (DFA) and dental behavior management problems (DBMP) in dental care are common during procedures performed in early childhood. This relationship between them has been observed in primary studies, that have specifically evaluated the effect of behavior management techniques and/or specific procedures in reducing DFA and DBMP in children under the age of six. Little is known about the impact of early childhood dental experience on DFA and DBMP in older children. Objective: The objective of this scoping review was to map and synthesize the evidence on the impact of early childhood dental treatment DFA and DBMP throughout childhood. Methods: The search for articles was carried out in the electronic databases APA PsycNet, Cochrane, Embase, LILACS, PubMed, Scopus and Google Scholar. For the search, terms related to preschool children, DFA, DBMP, caries, follow-up were combined. There were no restrictions on the language of publication or date of publication. Clinical trials and longitudinal observational studies carried out with children aged between two and six years at baseline were included. Narrative and systematic reviews, cross-sectional studies, case-controls, case reports and series, clinical trial protocols, abstracts in conference proceedings, editorials and opinion pieces were excluded. The process of selecting studies and extracting information was carried out by two researchers. Information on the treatments carried out, management techniques and follow-up time was extracted from the studies and summarized in a chart and text. Results: Out of a total of 742 studies identified, nine were included, of which five were randomized clinical trials, one was a non-randomized clinical trial and three were prospective longitudinal studies. The change in DFA level after dental care in early childhood was measured in six studies. In three there was an improvement. In the others, the DFA level worsened (n=2) or there was no change (n=1). In the other studies, DBMP was measured in isolation or in conjunction with DFA. Of the three, two showed an improvement in behavior. Follow-up times ranged from seven days to 30 months. Conclusion: From the studies selected, it was noted that there is no consensus on the effect of dental treatment carried out in early childhood on DFA and DBMP at future visits. The number of studies is limited, and the methods and results are heterogeneous.
Avaliação clínica e termográfica após exodontias de terceiros molares inferiores e diferentes terapias de fotobiomodulação: um ensaio clínico randomizado duplo-cego
(Universidade Federal de Goiás, 2024-01-30) Paula, Laiz Moreira de; Roriz, Virgílio Moreira; http://lattes.cnpq.br/4602848040014140; Roriz, Virgílio Moreira; Freitas, Gileade Pereira; Ferraz, Emanuela Prado
The aim of this study was to compare the parameters of pain, edema, temperature and soft tissue closure, after extractions of lower third molars, in dental sockets that received two different photobiomodulation therapy (PBMT) protocols. This is a double-blind, split-mouth randomized clinical study, in which 31 participants had their teeth 38 and 48 extracted. After extractions, one of the dental socket received PBMT at a wavelength of 808 nanometers (nm) (infrared – group 808) and the other dental socket received irradiation at wavelengths of 808 nm and 660 nm associated simultaneously (infrared + red – group 808+660), both in 3 points in the region of the dental socket, after the surgical procedure and on the 3rd and 7th days. Patients were evaluated for pain perception using the Visual Analogue Scale (VAS) and measurements were taken of facial edema, in centimeters (cm), temperature using Infrared Thermography, in degrees Celsius (ºC) and the distance between the edges of surgical wounds, in millimeters (mm), in the immediate postoperative period and on the 3rd, 7th and 28th days. For both 808+660 and the 808 groups, the mean VAS values for pain were 1.45 for the 3rd day and 0.52 for the 7th day. Regarding the assessment of facial edema, the averages for the pogonion-tragus measurement, on the 3rd day, were 15.38 cm for the 808+660 group and 15.48 cm for the 808 group and the averages for the labial commissure measurement-tragus, on the 3rd day, was 11.97 cm for the 808+660 group and 12 cm for the 808 group. The average temperatures for the 808+660 group were 34.9 ºC for the 3rd day and 35 ºC for the 7th day and for group 808, it was 34.9 ºC for the 3rd and 7th days. Regarding the size of the dental socket, measured on the 28th day, the averages for the 808+660 group were 5.25 mm (length) and 2.38 mm (width) and for the 808 group they were 5.12 mm (length) and 2.45 mm (width). All patients benefited from the effects of both PBMT protocols and no complications or adverse effects were encountered. After statistical analyses, adopting the value of p<0.05, no significant differences were found for the parameters of edema, temperature and socket healing, when comparing the two protocols. For the pain parameter, significant differences were found only for the 7th day, being greater for the 808+660 group (p=0.031). It can be concluded that the addition of the red laser (660nm) and the increase in energy did not intensify the benefits in reducing pain, edema or closing the soft tissues of the alveoli of lower third molars, in the protocols used here
Terapia de fotobiomodulação associada a l-glutamina e ácido hialurônico para prevenção e controle da mucosite oral em pacientes com câncer de boca e orofaringe submetidos a radioterapia e ou quimioradioterapia: ensaio clínico randomizado controlado
(Universidade Federal de Goiás, 2024-02-09) Santos, Rodrigo Wilmes dos; Mendonça, Elismauro Francisco de; http://lattes.cnpq.br/2305019128015847; Mendonça, Elismauro Francisco de; Assunção Junior, José Narciso Rosa; Morais, Marília Oliveira
Oral mucositis (OM) is an important adverse effect of radiotherapy (RT) in the mucosal region of the oral cavity and oropharynx, which can range from erythematous areas to large confluent ulcerations. The clinical severity of this inflammatory condition can lead to interruption of oncological treatment and impact the patient's prognosis. In this context, photobiomodulation therapy (TFBM) has been shown to be effective in reducing the severity of OM, controlling pain and promoting the repair of compromised mucous membranes. Other therapies have been investigated to control OM, such as the use of compounds based on l-glutamine (L-G) and hyaluronic acid (HA) (Topical Medication Treatment - TTM), both in the form of a gel and as a mouthwash. The objective, therefore, of this study was to investigate whether the application of TTM associated with TFBM and the Dental Preventive Protocol (PPO) would be more effective than the exclusive use of TFBM associated with PPO in preventing and controlling severe OM. Patients with oral cancer (BC) (lip and oral cavity) and oropharynx (n=48) undergoing adjuvant radiotherapy (≥60 Gy) and/or chemoradiotherapy (QRT) were investigated and randomized into two groups: A ( TFBM + PPO) (n=24) and B (TFBM + PPO + TTM) (n=24). To evaluate the effectiveness of therapies, the degree of clinical severity of OM was evaluated according to the scales of the National Cancer Institute (NCI) and the World Health Organization (WHO); patients' quality of life using the OHIP-14 questionnaires and symptom perception using the PROMS scale; number of RT interruptions and rate of adherence to cancer treatment. OM was a constant event in the groups evaluated, and all participants showed signs and symptoms from the 7th RT session onwards. Evaluation of the 30th session showed that both in group A and group B, severe OM occurred, 83.3% (n=20) and 87.5% (n=21), respectively. When evaluated based on the WHO scale, 50% (n=12) of group A had severe OM, while in group B only 8.3 of the participants had OM grade 3 and no grade 4. Regarding adherence to the PPO, note It is clear that the members of group B had significantly greater adherence than group A throughout the entire RT treatment [7th, 14th, 21st and 30th RT sessions (p<0.05)]. In the quality of life (QOL) results, it was observed that QRT therapies had a negative impact on QOL in relation to oral health in both groups, with group A having a higher score during all moments of treatment. Regarding the scores obtained in the OHIP-14 questionnaire, the results demonstrated that participants in group B had less impacted QoL throughout the course of RT or QRT, being that in the 14th, 21st, and 30th RT session assessments (p<0.001) reached statistical significance. In summary, the results indicate that the therapeutic combination of TTM+TFBM+PPO, although it did not prevent the clinical manifestation of chemoradio-induced BM, allowed greater adherence to oncological treatment and less impact on QoL.
Avaliação por tomografia computadorizada de feixe cônico da posição relativa de mini-implantes instalados com cirurgia não guiada para retenção de overdentures mandibulares
(Universidade Federal de Goiás, 2024-05-29) Moura Neto, Leuçon de Oliveira; Leles , Claudio Rodrigues; http://lattes.cnpq.br/6740286066154410; Leles , Cláudio Rodrigues; Hartmann, Roberto; Costa, Nádia do Lago
Introduction: Parallelism between mini-implants plays a fundamental role in the effectiveness of retentive overdenture systems. Objectives: This cross-sectional study is part of a randomized clinical trial and aimed to evaluate the relative position of mini-implants installed to retain a mandibular overdenture. Furthermore, the aim was to investigate the association of surgical protocol, technical and anatomical factors in the relative position of mini-implants through cone beam computed tomography images. Materials and methods: Tomography scans were analyzed in 73 patients who received four single-body mini-implants. Drilling was performed with a 1.6mm needle drill and 2.2mm Pilot Drill, according to the patient's bone density and the orientation of the surgical guide. Post-insertion CBCT images were analyzed using E-Vol-DX software with bone tissue removal filters. Divergence angles between implants and between the implants and the overdenture insertion path were measured using CliniView 10.2.6 software. Results: The divergence angles between the implants ranged from 0° to 22.3° (mean=4.2; SD=3.7) and from 0° to 26.2° (mean=5.3; SD=4 ,1) in the lateral and frontal projections, respectively (p<0.001). Only 1 (0.2%) and 3 (0.7%) of the measurements were greater than 20° in the lateral and frontal views, respectively. The average angulations between the implant and the overdenture insertion path were 9.3° (SD=7.5) and 4.0° (SD=2.9) for the lateral and frontal views, respectively (p<0.001). Regression analyzes showed a significant association between implant divergence and frontal view projection (p<0.001), greater distance between paired implants (p=0.017), surgical protocol (p=0.002), greater insertion torque final (p=0.011) and deeper preparation with the needle drill (p<0.001). The position of the implants was also associated with divergence in relation to the insertion path (p<0.05) Conclusions: The results showed that the mini-implants in this study were placed with low divergence angles and satisfactory parallelism. Factors such as shorter distances between implants, higher bone density and a flapless surgical approach have contributed positively to improving the parallelism of mini-implants.
Incidência de desfechos protéticos associados à overdenture mandibular retida por quatro mini-implantes: estudo prospectivo aninhado a ensaio clínico randomizado
(Universidade Federal de Goiás, 2023-10-20) Silva, Jésio Rodrigues; Leles, Cláudio Rodrigues; http://lattes.cnpq.br/6740286066154410; Leles, Cláudio Rodrigues; Roriz, Virgílio Moreira; Hartmann, Roberto
The use of mini-implants is gaining popularity due to less surgical complexity and advantages for cases of atrophic mandibles, and a new system of mini-implants was recently launched (Straumann Optiloc Mini-Implant System®). Aim: This prospective study is part of a randomized clinical trial and aimed to evaluate the incidence of prosthetic outcomes and associated factors in completely edentulous patients after the insertion of mandibular overdentures retained by four mini-implants. Methods: Completely edentulous individuals using conventional complete dentures were recruited for the installation of four mini-implants for treatment with mandibular overdenture. The study combined two surgery protocols (flapped or flapless) and loading (immediate or delayed). During follow-up, the incidence of prosthetic complications and maintenance events were recorded at scheduled and unscheduled appointments. Independent variables were considered as age, gender, surgery and loading protocol, and ridge form (CAWOOD & ROWEL, 1988). A classification of prosthetic outcome (six-field protocol) (PAYNE et al., 2001) was assessed at the end of the follow-up period. Descriptive statistical analysis was performed, with measurements of incidence rates, as well as Kaplan-Meier survival analysis and Cox regression, considering the significance level of p<0.05. Results: 74 participants were accompanied, with a mean age of 64 years (35-80 years), and total follow-up time varied between 19 and 26 months. There were a total of 182 prosthetic events in 147 consultations, 88 of which (59.87%) were unscheduled. The most frequent event was the need for minor adjustments to the base of the overdenture (incidence of 38), due to sore spots; followed by minor repairs at the base (incidence of 16); total (incidence of 21) or partial (incidence of 11) exchange of matrices; indirect relining (incidence of 21) due to instability; new intraoral capture (incidence of 8); fracture of the overdenture (n = 1) and tooth fracture (n = 1). The outcome of success was attributed to 69 participants (93.2%). The most significant predictor for the incidence of adjustments was the flapless surgery protocol (p=0.011), and the age was the most one for the incidence of total matrix replacement (p=0.031). There was no statistically significant difference in the incidence of other prosthetic complications with regard to gender, loading protocol, or ridge form (p>0.05). Conclusions: There was a high incidence of prosthetic events, but they were considered acceptable and mostly represented by small adjustments or repairs to the overdenture base in the initial period of treatment. The high survival and success rate of the implant and prosthesis shows that this is a favorable treatment option for this follow-up, and it is recommended to establish scheduled appointments for the expected events. Longer follow-ups are recommended to obtain more representative data regarding prosthetic outcomes.
Desenvolvimento e implementação de uma escala de autoeficácia em saúde oral para usuários de overdenture mandibular
(Universidade Federal de Goiás, 2023-11-06) Moore, Steven Kadeem; Leles, Cláudio Rodrigues; http://lattes.cnpq.br/6740286066154410; Leles, Cláudio Rodrigues; Srinivasan, Murali; Nogueira, Túlio Eduardo
Introduction: Self-efficacy, a concept coined by Albert Bandura, refers to an individual's belief in their ability to perform behaviors necessary to achieve specific performance goals. In the context of oral health, self-efficacy plays a pivotal role in influencing behaviors related to oral hygiene practices. Objective: This study aimed to develop an oral health self-efficacy scale and evaluate the relationship between oral health self-efficacy and the peri-implant health status of individuals using implant-retained overdentures. Materials and Methods: This was a cross-sectional observational study nested within a clinical trial at the Prosthesis and Implant Research Center (NPPI) at the Federal University of Goiás (UFG), Goiânia, Brazil. The project received approval from the Ethics Committee for Research at the Federal University of Goiás. A 25-item questionnaire was developed based on the Dental Self-Efficacy Scale (DSE), revised by a panel of experts, translated into Brazilian Portuguese, and piloted for clarity. The 25-item OHSE-OVER questionnaire collected data across four dimensions: (1) routine challenges – 4 items; (2) self-rated performance – 5 items; (3) attitudes towards oral health – 6 items; (4) challenges in special occasions – 10 items. The questionnaire score was calculated by first reversing the scale of dimensions 1 and 4 and then summing the scores of all dimensions. The final score repre-sented oral health self-efficacy (higher scores indicating greater oral health self-efficacy). The study included patients with mandibular overdentures retained by implants as part of a larger study involving mini-implants. Randomization was based on a surgical approach and loading protocol. All clinical procedures took place at NPPI/UFG, with no cost to the participants. Twelve-month follow-up assessments included pillar plaque evaluations, peri-implant bleeding, and denture surface plaque. A single clinician conducted clinical assessments for all patients and administered the Oral Health Self-Efficacy Evaluation for Overdenture Users (OHSE-OVER) questionnaire in an interview format during evaluation. Clinical data were compared with OHSE-OVER questionnaire responses. Statistical analyses, including Confirmatory Factor Analysis and regression, were conducted using IBM-SPSS 22.0 and Mplus 8.8 software, with a significance level of p < 0.05. Results: Out of the initially invited 74 patients, 69 participated in the study. Among them, the majority were female (63.8%), aged between 36 and 81 years (mean = 65.0; SD = 8.1), with nearly half being current or ex-smokers (47.8%), and most were taking regular medication (82.6%). Self-efficacy scores varied across different dimensions, with an overall mean score of 2.35. The scale demonstrated good reliability (Cronbach's alpha = 0.799). Con-firmatory factor analysis supported the four-factor model, with the removal of two items due to their low factor loadings. Regression analysis revealed that higher self-efficacy was linked to better denture hygiene outcomes in the overall scale, a positive association between oral health self-efficacy and sex(male), as well as an inverse relationship between oral health self-efficacy and plaque index in dimensions 1 and 2, respectively. No significant associations were observed in dimensions 3 and 4. Conclusion: The research underscores the fundamental role of self-efficacy in determining oral health outcomes in individuals using implant-retained overdentures. It establishes a significant association between oral health self-efficacy and key oral hygiene indicators, such as plaque index and denture hygiene, in patients relying on implant-retained overdentures. Additionally, the validation of the OHSE-OVER's psychometric robustness and internal structure reinforces its efficacy as a valuable instrument specifically developed to assess and address oral health self-efficacy in patients with mandibular overdentures, both in clinical and research contexts.
O efeito da espessura do esmalte e dentina na interpretação do oxímetro de pulso
(Universidade Federal de Goiás, 2020-02-28) Sestari, Larissa Emanuelle; Alencar, Ana Helena Gonçalves de; http://lattes.cnpq.br/2039898015468283; Silva, Julio Almeida; http://lattes.cnpq.br/1022830186974104; Silva, Julio Almeida; Estrela, Carlos; Guedes, Orlando Aguirre
Introduction: The thickness of the dental substrate is a factor that interferes with the result of the evaluation of the pulp oxygen saturation level, capable of reducing the pulse oximeter accuracy. This study evaluated the interference of enamel-dentin thickness in the interpretation of the pulse oximeter, having as variation factors the finger oxygen saturation and the presence and absence of light. Materials and Methods: Forty-two healthy human lower molars were sectioned centrally in the mesiodistal direction. After sectioning, the buccal and lingual faces were worn on the dentin surface and evaluated at 4.0mm, 3.0mm and 2.0mm thickness. A reference device was made for the alignment of the pulse oximeter diode, buccal tooth face, participant's little finger, lingual face and receiving diode. The positive control of the experiment was performed on the participant's finger without interposition of the dental faces, and the negative by juxtaposition of the dental faces without the participant's finger. All measurements were performed in the presence and absence of light. The variables were described by the mean and standard deviation, and the confidence interval presented. To compare the groups, analysis of variance (ANOVA) was used, followed by Bonferroni correction. Student's t-test was used to compare paired samples, and to assess the correlation between oxygen saturation and pulse level, the Pearson Correlation Coefficient was used. The significance level of 5%. Results: The average level of oxygen saturation in the finger was lower when the dental structure of 4.00.2mm, 92.7% and 89.3% was interposed, in the presence and absence of light, respectively, than when it was 3.00.2mm, 95.5% and 94.5%, and 2.00.2mm, 96.4% and 96.0% (P <0.001). The mean oxygen saturation level in the positive control was 96.1%. In the negative control samples, no oximetry and pulse results were recorded. Conclusions: The thickness of the dental structure interfered with the pulse oximeter interpretation, with significant reduction of oxygen saturation level for larger thicknesses, and the presence and absence of light changed the pulse oximeter interpretation.
Sobrevida e desfechos periimplantares de overdentures mandibulares retidas por quatro mini implantes de titânio-zircônia: ensaio clínico randomizado de um ano de acompanhamento
(Universidade Federal de Goiás, 2023-02-15) Curado, Thalita Fernandes Fleury; Leles, Cláudio Rodrigues; http://lattes.cnpq.br/6740286066154410; Leles, Cláudio Rodrigues; Oliveira, Camila Alves Costa de; Mello, Caroline Cantieri de
Mandibular overdenture is considered the standard treatment for completely edentulous patients, with excellent cost-effectiveness and high success rates. The traditional technique consists of installing two implants of conventional diameter, its use being limited in very resorbed ridges with reduced thickness. Mini-implants are small-diameter implants that have recently been used to retain overdentures with satisfactory success rates. The aim of this study is to evaluate the survival and peri-implant outcomes of a mini-implant system for overdenture retention and the influence of surgical and loading protocols performed. The present study consists of a 2x2 factorial randomized clinical trial where 74 total edentulous participants underwent the installation of four mini-implants for overdenture retention in the mandibular interforaminal region, totaling 296 mini-implants. They were randomized into four groups according to the surgical protocol and prosthesis loading: Immediate/Flapless = 17 (23.0%); Immediate/Flapped = 18 (24.3%); Delayed/Flapless = 20 (27.0%); and Delayed/Flapped = 19 (25.7%). Most participants (64.9%) were female and the mean age at surgery was 64.1 ± 8 years. The survival rate during the 1-year follow-up was 100%. No major biological complications were observed, such as abnormal marginal bone loss or sulcus depth. The plaque index remained stable at the follow-ups (3, 6 and 12 months after capture) while the bleeding index significantly reduced at the 6 and 12 months follow-ups compared to the baseline index (3 months). Probing depth and gingival margin height remained stable over the follow-up periods. The mean overall marginal bone loss was 0.68 (±0.68) mm after three months and 0.89 (±0.75) mm after one year. The flapless protocol showed better results in stability and soft tissue health and a slightly higher risk of marginal bone loss. The findings suggest that the mandibular overdenture retained by this new mini-implant system is a safe and predictable treatment option with regard to implant survival and peri-implant outcomes, even when flapless surgery and immediate loading are adopted.

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