Análise in vitro do selamento microbiológico entre componentes protéticos e implantes dentários confeccionados por manufatura aditiva

Estudo avalia a capacidade de selamento bacteriano e adaptação de implantes cone-morse produzidos por manufatura aditiva.

AUTORES

Lucas De Aguiar Greco
Mestrando em Implantodontia – Faculdade São Leopoldo Mandic.
Orcid: 0000-0003-3889-1278.

Marcelo Henrique Napimoga
Diretor de pós-graduação, pesquisa e extensão – Faculdade São Leopoldo Mandic.
Orcid: 0000-0003-4472-365X.

RESUMO

Objetivo: avaliar, mediante análise microbiológica, a capacidade de selamento bacteriano e adaptação de implantes de conexão interna cônica (cone-morse) de plataformas protéticas do tipo regular (Ø 3,5 mm) e slim (Ø 3 mm) produzidos por manufatura aditiva da marca Plenum. Material e métodos: foram utilizados 38 implantes e seus respectivos pilares protéticos indexados com torque de inserção de 20 Ncm. Duas metodologias foram empregadas, sendo que na primeira foi realizada a inserção de colônia de Escherichia coli na porção interna do implante seguida da instalação do componente protético. Os conjuntos compostos por implantes modelo regular Ø 3,5 mm (n=5) e modelo slim Ø 3 mm (n=5) foram imersos em meio de cultura Brain Heart Infusion (BHI), sendo observado se houve a proliferação bacteriana através do turvamento do meio de cultura. Na segunda metodologia, os componentes protéticos foram torqueados aos implantes – grupos compostos por implante modelo regular (n=10) e modelo slim (n=10) –, os quais foram imersos em suspensão de Escherichia coli e incubados a 37ºC. Após 14 dias, os pilares foram separados dos respectivos implantes e avaliada a presença de contaminação bacteriana após desinfecção da superfície externa. Resultados: tanto os implantes regular quanto os implantes slim da marca Plenum apresentaram 100% de capacidade de selamento com seus respectivos componentes protéticos, em ambos os testes utilizados. Conclusão: os implantes dentários de conexão protética tipo cone-morse fabricados via tecnologia de impressão 3D apresentaram 100% de selamento entre o implante e seu componente protético, para os dois modelos de implantes testados.

Palavras-chave – Selamento biológico; Implante dentário; Conexão interna cônica; Manufatura aditiva; Impressão 3D; Pilar/implante; Peri-implantite.

ABSTRACT

Objective: to evaluate the in vitro ability of bacterial sealing and adaptation of conical internal connection implant (Morse taper) of regular (Ø 3.5 mm) and slim (Ø 3 mm) platforms produced by Plenum additive manufacturing. Material and methods: thirtyeight implants and their respective indexed prosthetic abutments were used, with an insertion torque of 20 Ncm. Two methodologies were used, the fi rst being the insertion of Escherichia coli strain in the internal portion of the implant followed by the installation of the prosthetic component. Sets consisting of regular implants Ø 3.5 mm (n=5) and slim model implants Ø 3 mm (n=5) were immersed in Brain Heart Infusion (BHI) culture medium and observed if there was bacterial proliferation through the turbidity of the culture medium. In the second methodology, the prosthetic components were torqued to the implants and the groups were composed of the regular model implant (n=10) and the slim model implant (n=10), which were immersed in Escherichia coli suspension and incubated at 37ºC. Aft er 14 days, the abutments were separated from the respective implants, and the presence of bacterial contamination was evaluated aft er disinfection of the external surface. Results: the results showed that both regular and slim implants from the Plenum brand showed 100% sealing capacity with their respective prosthetic components in both tests used. Conclusion: Morse taper prosthetic connection dental implants manufactured using 3D printing technology showed 100% sealing between the implant and its prosthetic component, for the two dental implant models tested.

Key words – Biological sealing; Dental implant; Conical internal connection; Addition manufacturing; 3D printing; Abutment/ implant; Peri-implantitis.

Recebido em jan/2022
Aprovado em jan/2022

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