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Avaliação da estabilidade primária de implantes imediatos: estudo in vitro
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Objetivos: Este estudo simula o comportamento da estabilidade primária (medido em torque de inserção e valores de ISQ) de implantes colocados em diferentes defeitos ósseos verticais simulando alvéolos pós-extracionais.
Materiais e métodos: O estudo inclui 4 grupos com colocação de 30 implantes em defeitos ósseos por grupo, sendo o G1 sem defeito e o G2, G3 e G4 com defeitos de 3mm, 6mm e 9mm horizontal/vertical, respetivamente. Foi feita a medição de estabilidade primária através de valores de ISQ e de torque de inserção. Foram comparados os resultados através de análise estatística.
Resultados: Foram encontradas diferenças significativas para os valores de ISQ e torque de inserção entre todos os grupos e também uma correlação significativa entre os valores de ISQ e de torque de inserção.
Conclusões: Implantes colocados em alvéolos com defeitos verticais até 50% da altura do implante apresentaram uma estabilidade primária média por grupo superior a 60 na escala ISQ, mas implantes colocados com defeitos superiores a 50% da altura do implante atingem uma estabilidade primária média inferior a 60 na escala ISQ.
Objectives: This study simulates the primary stability behavior (measured in insertion torque and in ISQ values) of implants placed in different vertical bony defects that simulate post- extractional sockets. Materials and methods: There were 30 bony defects and implant beds preparations made for each group, where G1 had no bony defect and G2, G3 and G4 had defects of 3mm, 6mm and 9mm, respectively. The implants were placed and their primary stability was measured using ISQ and insertion torque values. The results were compared through statistical analysis. Results: Significant differences were found for the ISQ and insertion torque values between all groups and also a significant correlation between ISQ and insertion torque values. Conclusions: Implants placed in sockets with vertical bony defects that are up until 50% of the implant height can present with an average primary stability per group over 60 in the ISQ scale, however implants placed with bony defects over 50% of the implant height reach an average primary stability under 60 on the ISQ scale.
Objectives: This study simulates the primary stability behavior (measured in insertion torque and in ISQ values) of implants placed in different vertical bony defects that simulate post- extractional sockets. Materials and methods: There were 30 bony defects and implant beds preparations made for each group, where G1 had no bony defect and G2, G3 and G4 had defects of 3mm, 6mm and 9mm, respectively. The implants were placed and their primary stability was measured using ISQ and insertion torque values. The results were compared through statistical analysis. Results: Significant differences were found for the ISQ and insertion torque values between all groups and also a significant correlation between ISQ and insertion torque values. Conclusions: Implants placed in sockets with vertical bony defects that are up until 50% of the implant height can present with an average primary stability per group over 60 in the ISQ scale, however implants placed with bony defects over 50% of the implant height reach an average primary stability under 60 on the ISQ scale.
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Teses de mestrado - 2022 Saúde Oral