Avaliação da estabilidade primária de implantes instalados em cavidades confeccionadas por meio do ultrassom cirúrgico e instrumentos rotatórios convencionais: Estudo in Vitro
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Data
2016-10-17
Autores
Silva, Leonardo de Freitas [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
A estabilidade primária de implantes dentários corresponde a um fenômeno mecânico relativo à qualidade ou quantidade óssea, ao tipo de implante e a técnica de instalação. O objetivo deste trabalho foi avaliar o tempo de fresagem, aquecimento dos sítios fresados e a estabilidade dos implantes instalados em cavidades realizadas com ultrassom cirúrgico e instrumentos rotatórios. Foram realizadas 64 cavidades em 04 blocos de poliuretano simulando as densidades de ossos tipo I, II, III e IV. A temperatura da superfície do bloco nos leitos foi medida durante a fresagem. A estabilidade dos implantes foi mensurada por meio do torque de inserção, de remoção e frequência de ressonância. O implante cilíndrico TitaOss 3,75 x 11 mm foi instalado em todas as cavidades. Os resultados mostraram maior tempo e temperatura para o grupo em que foi usado o ultrassom. Quanto à estabilidade primária não houve diferença significante entre os grupos estudados. Pôde-se concluir que a estabilidade primária dos implantes não foi influenciada pelos métodos de fresagem utilizados e que o ultrassom cirúrgico necessitou de mais tempo e gerou mais calor do que o instrumento rotatório para o preparo das cavidades.
The primary stability of dental implants corresponds to a mechanical phenomenon related to bone quality or quantity, type of implant and installation technique. The objective of this study was to evaluate the time of drilling, heating drilled sites and stability of implants placed in cavities made with piezosurgery and rotary instruments. Polyurethane blocks were used simulating the densities of bone type I, II, III and IV. The surface temperature of the block was measured in the cavity during drilling, and recorded the highest temperature variation. The stability of the implants was measured with a torque insertion, torque of removal and resonance frequency. The cylindrical implant TitaOss 3.75 x 11 mm was used in all cavities. The results showed greater time and temperature for the group that was used piezosurgery. The primary stability was no significant difference between groups. It could be concluded that implant primary stability was not influenced by the used methods and piezosurgery took more time and generated more heat than the conventional rotatory instruments to prepare the cavities.
The primary stability of dental implants corresponds to a mechanical phenomenon related to bone quality or quantity, type of implant and installation technique. The objective of this study was to evaluate the time of drilling, heating drilled sites and stability of implants placed in cavities made with piezosurgery and rotary instruments. Polyurethane blocks were used simulating the densities of bone type I, II, III and IV. The surface temperature of the block was measured in the cavity during drilling, and recorded the highest temperature variation. The stability of the implants was measured with a torque insertion, torque of removal and resonance frequency. The cylindrical implant TitaOss 3.75 x 11 mm was used in all cavities. The results showed greater time and temperature for the group that was used piezosurgery. The primary stability was no significant difference between groups. It could be concluded that implant primary stability was not influenced by the used methods and piezosurgery took more time and generated more heat than the conventional rotatory instruments to prepare the cavities.
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Piezocirurgia, Implantes Dentários, Técnicas In Vitro, Piezosurgery, Dental Implants, In Vitro Techniques