Morse taper implant macrodesign, loading protocol and site of installation – retrospective study of 5,601 implants

Rafael Coutinho Mello MACHADO; Geninho THOMÉ; Sergio Rocha BERNARDES; Ana Claudia Moreira MELO

doi:10.1590/1807-2577.06919

Original Article

Morse taper implant macrodesign, loading protocol and site of installation – retrospective study of 5,601 implants

Macrodesenho do implante cone Morse, protocolo de carregamento e local de instalação – estudo retrospectivo de 5601 implantes

Rafael Coutinho Mello MACHADO; Geninho THOMÉ; Sergio Rocha BERNARDES; Ana Claudia Moreira MELO

http://dx.doi.org/10.1590/1807-2577.06919 Rev. odontol. UNESP, vol.48, e20190069, 2019

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Abstract

Abstract: Introduction: The long-term implant-supported prosthetic rehabilitation monitoring is extremely important in evaluating parameters that could interfere in the success of the treatment.

Objective: To evaluate the influence of macrodesign (shape of the body and apex), length and diameter, insertion torque, site of installation as well as the loading protocol, on long-term survival rates.

Material and method: The data obtained was from the medical records of rehabilitated patients who had had at least one Morse taper implant surgery done at ILAPEO School between 2006 -2012. Incomplete medical records, from which it would have been impossible to extract all data essential to complete the study, were excluded.

Result: A total of 1,142 patient’s medical records comprised the sample; documenting the progress of 5,601 implants, done in both jaws and mandibles. The final survival rate was 98.31%, over an average time of 37.54 months. The type of implant most used was cylindrical (70.33%). The mean installation torque most evidenced in the study was between 41 and 50 Ncm. A logistical regression analysis showed that none of the following variables, site of installation, body and apex shape designs and length, had any significant statistical influence on implant loss. Torque increase and diameter influenced implant loss while immediate loading favored implant maintenance.

Conclusion: It can be concluded that Morse taper implants present a long-term survival rate that can be lowered by excessive torque, as well as by the diameter of the implant.

Keywords

Dental implantation, dental prosthesis, mouth rehabilitation

Resumo

Resumo: Introdução: O monitoramento a longo-prazo de reabilitações implantossupportadas é extremamente importante para avaliação dos parâmetros que podem interferir no sucesso do tratamento.

Objetivo: Avaliar a influência do macrodesenho (forma do corpo e ápice), comprimento e diâmetro, torque de inserção, região de instalação, assim como o protocolo de carregamento, na sobrevivência a longo-prazo.

Material e método: Os dados foram obtidos a partir dos prontuários de pacientes reabilitados com pelo menos um implante cone Morse na Faculdade Ilapeo entre os anos de 2006 e 2012. Prontuários com preenchimento incompleto, que pudesse interferir na coleta de dados foram excluídos da amostra.

Resultado: Um total de 1142 prontuários compôs a amostra, resultando num total 5601 implantes, instalados tanto em mandíbula como em maxila. A taxa de sobrevivência final foi de 98,31%, em um tempo médio de 37,54 meses. O tipo de implante mais utilizado foi o cilíndrico (70,33%). O torque médio de instalação ficou entre 41 e 50 Ncm. Uma análise de regressão logística mostrou que nenhuma das seguintes variáveis, local de instalação, forma do corpo e ápice e comprimento, teve influência estatisticamente significante na perda de implantes. O aumento do torque e o diâmetro influenciaram a perda do implante e a carga imediata favoreceu a estabilidade.

Conclusão: Pode ser concluído que implantes cone Morse apresentam índice de sobrevivência elevado que pode ser influenciado por um torque excessivo assim como pelo diâmetro do implante.

Palavras-chave

Implantação dentária, prótese dentária, reabilitação bucal

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