A manutenção da dentição natural, em ótimas condições de função, saúde e estética é o objetivo principal dos tratamentos odontológicos, porém quando as possibilidades terapêuticas se esgotam, surge a necessidade de extrações dentárias. A remodelação óssea decorrente do processo de cicatrização alveolar pós-exodontia pode resultar em alterações de volume na região. Este tema é assunto recorrente em renomadas publicações científicas odontológicas e diversos pesquisadores recomendam procedimentos regenerativos e buscam soluções para corrigir as alterações que ocorrem nesta região. Dentre estes procedimentos, pode-se afirmar que a instalação imediata de implantes pós exodontia, sem deslocamento de retalho, constitui-se como uma alternativa que garante benefícios funcionais e também estéticos no resultado final da reabilitação. O presente trabalho tem como objetivo apresentar um caso clínico que representa uma alternativa terapêutica prática e viável para cicatrização alveolar adequada. Neste caso clínico, a utilização de implante imediato e cicatrizador personalizado com resina fluida, reduziu as alterações do processo de cicatrização alveolar e permitiu a preservação da arquitetura gengival e a obtenção de um perfil de emergência ideal para realização da prótese definitiva suportada por implante.

Background and Aim Methods and Materials Results Conclusion ReferencesAll 29 patients selected were submitted to Cone Beam computerized tomography (CBCT), in which the appropriate volume for the conventional implant installation was ratified. All CT scans were performed on ICAT ® w i t h t h e f o l l o w i n g s p e c i f i c a t i o n s : F O V 1 6 c m diameter / 6cm height; resolution 2 voxel / 26.9 seconds, acquisition time 8.9 seconds, KVP 120 and mAs 18.54. The acquired images have been archived and viewed in iCAT Vision ® software. Density evaluations were performed on the cross sections of the edentulous sites using the HU tool available in this software. The HU measurements were made in a rectangular section of the implant size planned for the site (4.1 mm x 8 mm or 4.3 mm x 8.5 mm), on the long axis intended for the future implant, with cervical margin at the limit of the internal cortex of the alveolar ridge (FIGURE 1). The distribution of implant markers by patients occurred randomly at www.random.org. This research was approved in the Brazilian Ethics Committee, in the Brazil Platform portal, under the number CAAE: 54857716.6.0000.5374. An implant was installed from Straumann ® , Bone level Tapered (BLT) 4.1 mm x 8 mm or SIN ® Unitite Prime 4.3 mm x 8.5 mm, according to a random distribution, in the posterior region of jaw. 10645Analysis of correlation between hounsfield units of CBCT scans and implant primary stability in implant stability quotient (ISQ).

Background : The primary stability of dental implants is very important for prosthetic rehabilitation viability and of peri-implant tissues health, fundamental for the maintenance of clinical success. This was a prospective, controlled clinical study that evaluated initial stability with resonance frequency analysis (RFA) and marginal bone crest preservation in two types of dental implants.Aim/Hypothesis : The aim of this research was to evaluate two types of dental implants, installed in the posterior mandible region, regarding primary stability, measured by resonance frequency analysis (RFA) and peri-implant bone preservation evaluated in standardized digital radiographs with software ImageJ.Material and Methods : Twenty-four implants were installed in adjacent edentulous site in the posterior mandible regions, in 12 different patients. Each patient received a BLT SLActive 4.1 x 8 mm implant from the Straumann company and a Unitite 4.3 x 8.5 mm implant from the company SIN. Surgeries were performed according to the instrumentation protocol of each company. Patient with implants installed with initial anchorage below 30 NCm were excluded from the study. The resonance frequency analyses (RFA) were performed at the time of installation, 4, 6 and 8 weeks with the Osstell ISQ apparatus. The bone crest assessments were made in the immediate postoperative period, 4 and 8 weeks with standardized periapical radiographs and ImageJ software for linear measurements.Results : It was observed that both implants obtained the same stability behavior in all the evaluated periods, and the ISQ values of the Straumann implants were statistically higher than SIN ' s in all evaluated stages. The same pattern of bone response was also found for the two implants. On the mesial surface, both implants had a statistically significant reduction in bone levels from the immediate postoperative week to the 8 week assessment, while in the distal part there was no statistical difference in crest bone height. A positive correlation between stability, measured on ISQ, and bone loss at the ridge on the fourth and eighth week in the Straumann implants was observed. Conclusion and Clinical Implications: It was concluded that both implants present similar behavior regarding bone loss and stability in all evaluated periods and that the stability values, in ISQ, of the Straumann implants were superior to the SIN implant.