Revista de Odontologia da UNESP
https://revodontolunesp.com.br/article/doi/10.1590/1807-2577.03624
Revista de Odontologia da UNESP
Original Article

Effect of platform switching on bone loss around implants: a retrospective study

Efeito da plataforma switching na perda óssea ao redor de implantes: um estudo retrospectivo

Lorena Gonçalves ALEXANDRINO; Leticia de Santana MASCARENHAS; Gabriela Moretto dos SANTOS; Flávia Noemy Gasparini Kiatake FONTÃO; Valdir Gouveia GARCIA; Luis Eduardo Marques PADOVAN; Guilherme José Pimentel Lopes de OLIVEIRA; Élcio MARCANTONIO JUNIOR

http://dx.doi.org/10.1590/1807-2577.03624 Rev. odontol. UNESP, vol.53, e20240036, 2024
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Abstract

Introduction: The impact of switching platform unevenness on bone stability is not yet known.

Objective: The aim of this study was to evaluate the effect of different mismatching of platform switching on the bone stability around implants with a Morse taper with internal angulation of 16º after 4-11 months of prosthetic loading.

Material and method: The implants were evaluated in two experimental periods (implant installation time and loading, and maintenance visit – after between 4 and 11 months of prosthetic loading). The variables evaluated were the bone level assessed by periapical radiography, and the survival rates of the dental implants. The peri-implant bone level was also evaluated according to the diameter of the implants used.

Result: One hundred and nineteen dental implants placed in 45 patients were evaluated. Of these implants, 33 presented a 3.5mm diameter, 33 a 3.75mm diameter, 19 a 4.0 mm diameter, and 34 a 4.3 mm diameter. The variation in bone loss from these implants was 0.36 ± 0.34 mm. The correlation index between the implant diameters and peri implant bone loss was r = 0.01, with a p value = 0.22. This finding indicates that the correlation between the variation in peri-implant bone level and the implant diameter was not significant. The survival rate of the total sample was 97.47%.

Conclusion: Implants with a Morse taper connection and 16º internal angulation presented good early survival rates with limited bone loss, that was not influenced by the degree of platform switching.

Keywords

Dental implants; marginal bone loss; platform switching

Resumo

Introdução: O impacto do desnível da plataforma switching na estabilidade óssea ainda não é conhecido.

Objetivo: O objetivo deste estudo foi avaliar o efeito de diferentes desníveis (mismatchings) da plataforma switching na estabilidade óssea ao redor de implante com uma conexão Morse de angulação interna modificada (16°) após 4 a 11 meses do carregamento protético.

Material e método: Os implantes foram avaliados em dois períodos experimentais (momento da instalação e carregamento protético e no momento da visita de manutenção – após 4 a 11 meses do carregamento protético). As varáveis avaliadas foram o nível ósseo avaliado através de radiografia periapical e a taxa de sobrevivência destes implantes. O nível ósseo peri-implantar também foi avaliado de acordo com o diâmetro utilizado.

Resultado: 119 implantes dentários instalados em 45 pacientes foram avaliados. Destes implantes, 33 apresentaram diâmetro de 3.5mm, 33 implantes apresentaram 3.75mm e 19 apresentaram 4.0mm de diâmetro. A variação na perda óssea destes implantes foi de 0.36 ± 0.34 mm. O índice de correlação entre os diâmetros do implante e a perda óssea peri-implantar foi r=0.01, com um valor de p=0.22. Esses achados indicam que a correlação entre a variação do nível ósseo peri-implantar e o diâmetro do implante não foi significativa. A taxa de sobrevivência total da amostra foi de 97,47%.

Conclusão: Implantes com conexão Morse com angulação interna de 16° boas taxas de sobrevivência em curto prazo de acompanhamento, apresentando perda óssea limitada, a qual não foi influenciada pelos diferentes desníveis provocados pelo diâmetro do implante.

Palavras-chave

Implantes dentários; perda óssea marginal; plataforma switching

References

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Submitted date:
10/25/2024

Accepted date:
11/03/2024

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