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dc.creatorCarneiro, Luciano Sandoval-
dc.creatorCunha, H. A. da-
dc.creatorLeles, Cláudio Rodrigues-
dc.creatorMendonca, Elismauro Francisco de-
dc.identifier.citationCARNEIRO, L. S.; CUNHA, H. A. da; LELES, C. R.; MENDONÇA, E. F. Digital subtraction radiography evaluation of longitudinal bone density changes around immediate loading implants: a pilot study. Dentomaxillofacial Radiology, London, v. 41, n. 3, p. 241-247, 2012.pt_BR
dc.identifier.issne- 1476-542X-
dc.description.abstractObjective: The aim of this study was to assess longitudinal quantitative changes in bone density around different implant loading protocols and implant surfaces measured by digital subtraction radiography (DSR). Methods: 12 patients received bilateral homologous standard and TiUniteH (Nobel Biocare, Kloten, Switzerland) single-tooth implants under 2 implant—loading protocols: immediate loading (8 patients, 16 implants, 12 maxillary) and conventional loading (4 patients, 8 implants, 4 maxillary). Standardized periapical radiographs were taken immediately after implant placement (baseline image) and at the 3-month, 6-month and 12-month follow ups. Radiographic images were digitized and submitted to digital subtraction using the DSR systemH (Electro Medical System, Nyon, Switzerland), resulting in three subtracted images. Quantitative analysis of bone density was performed using Image ToolH software (University of Texas Health Science Centre, San Antonio, TX) to assess pixel value changes in five areas around the implants (crestal, subcrestal, medial third, apical–lateral and apical). Results: Repeated-measures analysis of variance showed that grey levels were significantly influenced by follow-up time and implant-loading protocol. A linear increase in grey levels was found for immediate loading (IML) implants and a significant decrease in grey levels was observed in the 12-month follow up for conventional loading implants. No effect of implant surface treatment was observed. Conclusion: In conclusion, IML protocol induced mineral bone gain around single-tooth implants after the first year under function for cases with favourable bone conditions.pt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectSubtraction techniquept_BR
dc.subjectDental implantspt_BR
dc.titleDigital subtraction radiography evaluation of longitudinal bone density changes around immediate loading implants: a pilot studypt_BR
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