Revista de Odontologia da UNESP
https://revodontolunesp.com.br/article/doi/10.1590/1807-2577.01919
Revista de Odontologia da UNESP
Original Article

Influência da topografia de superfície nanométrica na estabilidade primária de mini-implantes dentários

Influence of the nanometric surface topography on the primary stability of dental mini-implants

Juliana Dias Corpa TARDELLI; Mariana Lima da Costa VALENTE; Andréa Cândido DOS REIS

http://dx.doi.org/10.1590/1807-2577.01919 Rev. odontol. UNESP, vol.48, e20190019, 2019
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Resumo

Resumo: Introdução: A modificação físico-química da superfície de mini-implantes utilizados no suporte de overdentures pode influenciar o desempenho mecânico dos mesmos.

Objetivo: Avaliar a influência de um tratamento de superfície do tipo nanométrico no desempenho mecânico de novos designs de mini-implantes.

Material e método: Foram utilizados 40 mini-implantes (Ti-6Al-4V), com Ø 2 mm × 10 mm de comprimento e dois designs diferentes, rosqueado e helicoidal, divididos em quatro grupos (n=10), de acordo com o modelo e a presença ou a ausência de tratamento superficial. O desempenho mecânico foi avaliado por meio de torque de inserção e ensaio de arrancamento em cilindros ósseos suínos. Análise de variância ANOVA e teste de Tukey, com significância de 5%, foram utilizados para análise estatística dos dados.

Resultado: Foi observada diferença estatisticamente significante entre os grupos com e sem tratamento para torque de inserção (p<0,001), e ensaio de arrancamento (p=0,006), sendo a maior média para o grupo com tratamento, independentemente do design. Na comparação entre os designs, o rosqueado apresentou média significativamente maior (p<0,001) que o helicoidal. Conclusão: O tratamento de superfície nanométrico viabilizou melhor desempenho mecânico dos mini-implantes avaliados. Com relação aos novos designs testados, o rosqueado apresentou resultados superiores ao helicoidal.

Palavras-chave

Implantes dentários, design, torque, alteração de superfície

Abstract

Abstract: Introduction: The physical-chemical modification of the surface of mini-implants used in the support of overdentures can influence the mechanical performance and survival of the same.

Objective: To evaluate the influence of a nanometric surface treatment on the mechanical performance of new mini-implant designs.

Material and method: 40 mini-implants (Ti-6Al-4V) with Ø 2 mm x 10 mm in length and two different designs, threaded and helical, were divided into four groups (n = 10) according to model, presence or absence of surface treatment. The mechanical performance was evaluated by means of insertion torque and pullout test in swine bony cylinders. Analysis of variance ANOVA and Tukey test, with significance of 5% were used for statistical analysis of the data.

Result: A statistically significant difference was observed between the groups with and without treatment for insertion torque (p <0.001) and pullout test (p = 0.006), being the highest mean for the treatment group, regardless of the design. In the comparison between the designs, the thread presented a significantly higher average (p <0.001) than the helicoid.

Conclusion: The nanometric surface treatment enabled better mechanical performance of the mini-implants evaluated. With respect to the new designs tested, the thread presented superior results to the helicoidal one.
 

Keywords

Dental implants, design, torque, surface alteration

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