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Item Lesões Traumáticas Dento-Alveolares em Dentes Decíduos: Estudo Retrospectivo.(Universidade Federal de Goiás, 2010-05-14) AMORIM, Lilian de Fátima Guedes de; COSTA, Luciane Ribeiro de Rezende Sucasas da; http://lattes.cnpq.br/9906371509661305; ESTRELA, Carlos; http://lattes.cnpq.br/3611967334176683Aim: Determine the prevalence of dental injuries (TDI) in primary teeth and the influence of predisposing clinical factors on their occurrence and analyze the prevalence of developmental sequelae in permanent teeth and determine the association between these sequelae and age, gender, injury type, injury recurrence and sequelae in primary teeth, in children under 7 years old who sought treatment at a private pediatric dental clinic in Goiânia, Goiás, over a period of 15 years. Methodology: A retrospective study which analyzed 2725 dental records. Three hundred and eight dental records with 412 traumatized primary teeth were selected. This constituted the sample used to determine the prevalence of injuries in primary teeth and their association with predisposing clinical factors (Article 1); of these, 241 primary teeth (148 dental records) were followed up until the eruption of the permanent successor teeth. This was the sample for the study of sequelae in primary and permanent teeth (Article 2). All the data were statistically analyzed using the frequency distribution, chi-square test and logistic regression analysis. The level of significance was 5%. Results: The prevalence of dental injuries was 11.3%, with the greatest frequency in the 13-36 month age group. There was no statistical difference between genders. The most frequently affected teeth were the maxillary central incisors (83.3%). The main location of inuries was the home (43.5%), with falls the most frequent cause. The prevalence of dental TDI was similar in all months of the year. The most common type of TDI was subluxation (35.1%). Clinical factors overjet > 3 mm and negative overbite showed a significant difference between the trauma and no-trauma groups. In 46.5% of the cases, treatment was sought in the first 24 hours after the trauma. The most prevalent type of treatment was follow-up (51.0%). Color alteration of crown (26.0%) was the most frequent sequelae for primary teeth. The sequelae found in permanent teeth were enamel discoloration and/or hypoplasia (74.1%) and eruption disorder (25.9%). No significant relation was found between sequelae in permanent teeth and sequelae in primary teeth, type of trauma, gender or TDI recurrence. The only statistical difference was found in relation to the child s age at the moment of trauma. Conclusion: Immediate treatment of the child with a TDI, associated with the efficient diagnosis and long-term follow-up are decisive for the success of treatment. New research to help establish an effective protocol for the treatment of TDIs in primary teeth and the implementation of strategies that prepare professionals to treat TDIs and to educate the public about prevention and treatment of these lesions is necessary..Item Avaliação microbiana das manchas dentárias extrínsecas negras em pacientes submetidos a tratamento ortodôntico(Universidade Federal de Goiás, 2011-07-04) COSTA, Marília Teixeira; DIAS, Fátima Ribeiro; http://lattes.cnpq.br/5741031258926403; PIMENTA, Fabiana Cristina; http://lattes.cnpq.br/2230554075502158Black extrinsic tooth stains appear on the smooth surfaces of teeth, parallel to the marginal gum and are considered a specific form of biofilm due to the high content of calcium, phosphate and insoluble iron salt. This study evaluated the profile of bacterial biofilms in patients with black extrinsic tooth stain with or without fixed metal braces installed. Four bacteria were investigated using conventional multiplex PCR (Polymerase Chain Reaction), black-pigmented bacteria: Prevotella nigrescens and Prevotella intermedia and non pigmented bacteria: Streptococcus mutans and Actinomyces spp. The study enrolled 52 patients, 25 females and 27 males. They were divided into two groups: Group I: 26 patients with black extrinsic tooth stains and Group II: 26 without stains. Twenty patients had fixed orthodontic brackets of stainless steel. The results showed that in both group (I and II) 61.5% of patients had at least one of the bacteria investigated. The P. nigrescens was the most frequently bacteria detected [Group I (30.7%) and Group II (46.1%)], P. intermedia was detected in 3.8% in Group I and 11.5% in Group II. The non pigmented bacteria were found in similar rates in Groups I and II, 19.2% vs 11.5% for Actinomyces spp and 23.1% vs 30.7% for S. mutans. There were no statistically significant differences when comparing the frequencies of each bacterium between groups, indicating that bacterial profiles were similar between patients with or without black extrinsic stains. When analyzed the frequencies of bacteria in the biofilm in black extrinsic tooth stain in patients with braces results indicated that it did not alter the frequency of bacteria found, however, it was observed that the presence of fixed orthodontic appliance significantly reduces the associations between bacteria in the biofilm of black extrinsic stains (p <0.05).Item Detecção da Reabsorção Radicular Apical após Tratamento Ortodôntico, em Longo Prazo, Utilizando Radiografia Periapical e Tomografia Computadorizada de Feixe Cônico(Universidade Federal de Goiás, 2011-04-15) FREITAS, Jairo Curado de; ALENCAR, Ana Helena Gonçalves de; http://lattes.cnpq.br/2039898015468283; ESTRELA, Carlos; http://lattes.cnpq.br/3611967334176683Aim: To detect Apical Root Resorption (ARR) after orthodontic treatment at 52-288 months using periapical radiography (PR) and cone beam computed tomography (CBCT). Methods: Radiographic images obtained from 58 patients, before (T1) and after orthodontic treatment (T2), and following 52-288 months of treatment were analized by three members of the Brazilian Board of Orthodontics. Apical structures were evaluated by PR images (T2 and T3), using Levander and Malmgren2 scores. The presence of ARR on CBCT images were detected only at T3. The Kolmogorov-Smirnov test was used for statistical analyses, and the level of significance was set at 5%. Kappa statistics determined interobserver agreement. Results: ARR more frequent were with scores 1 in T2 (51.6%) and T3 (53.1%), when evaluated by PR (p>0.05). When compared the frequencies of ARR in T3 among PR and CBCT images, the differences were significant for maxillary and mandibular pre-molar groups, and for mandibular molar group (p>0.05). The teeth with highest frequency of ARR presence using CBCT images were maxillary lateral incisors (94.5%) and mandibular central incisors (87.7%), while the bicuspids showed the lowest frequency. The CBCT images showed that the teeth involved in orthodontic treatment with extraction present higher ARR frequency (p<0.05). Conclusion: PR images suggested higher frequency of ARR compared with CBCT images for maxillary and mandibular pre-molar groups, and for mandibular molar group ARR did not change in long term. CBCT is a promising imaging method to be used in the diagnosis of ARR.Item Estudo epidemiológico de 261 dentes permanentes avulsionados de pacientes tratados em um serviço de urgência odontológica(Universidade Federal de Goiás, 2012-01-09) GUEDES, Orlando Aguirre; ALENCAR, Ana Helena Gonçalves de; http://lattes.cnpq.br/2039898015468283; ESTRELA, Carlos; http://lattes.cnpq.br/3611967334176683Aim: To evaluate epidemiological aspects and clinical factors of avulsion of the permanent teeth. Material and Methods: The sample was composed by 170 patients (261 avulsed teeth) treated in Dental Urgency Service of the Dental School of the Federal University of Goiás, Brazil, between 2000 and 2008. The following informations were collected from the patients´ files: gender, age, cause of tooth avulsion, seasonal distribution, type and number of avulsed teeth, replantation, stage of root development, transport media, extra-oral period, presence of additional damage, treatment provided and post-traumatic complications. The statistical treatment analyzed data from frequency distribution and chi-square test. The level of significance was set at 5% for all analyses. Results: Higher occurrence of tooth avulsion was observed in males (71.18%) and patients with 6-10 and 11-15 years old (30.59% each one). The main etiologic factors involved were falls (51.76%), traffic accidents (29.41%) and violence (6.47%). The seasonal distribution showed that most cases occurred in Autumn (March to June; 31.18%), followed by Winter (June to September; 27.65%). The most affected tooth was the upper central incisor (62.45%), followed by the upper lateral incisor (21.46%). Significant proportion (67.23%) of traumatized teeth presented root apex completely formed. One hundred and nineteen teeth (45.59%) were replanted. The majority of the replanted teeth (89.08%) received delayed replantation. Thirty eight teeth (31.93%) were stored in dry media. Periodontal healing was observed in 41 teeth (34.45%), inflammatory root resorption in 44 teeth (36.97%) and replacement root resorption in 22 teeth (18.49%). The most frequent modalities of treatment for replanted teeth were endodontic treatment and the temporary filling of the root canal with calcium hydroxide (58.82%) and endodontic treatment and the definitive root canal filling (26.89%). Conclusion: There was a high number of dental avulsions in males, aged under 15 years, from falls and mainly involving maxillary anterior teeth, and low rate of replantation accompanied by a significant number of teeth stored in non-physiological over a long period time.