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Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial
versão impressa ISSN 1646-2890versão On-line ISSN 1647-6700
Resumo
MENDES, Teresa Almeida et al. Influence of abutment and connection type on implant-abutment connection rigidity: an in vitro study. Rev Port Estomatol Med Dent Cir Maxilofac [online]. 2022, vol.63, n.3, pp.134-140. Epub 30-Set-2022. ISSN 1646-2890. https://doi.org/10.24873/j.rpemd.2022.10.880.
Objectives:
To evaluate the effects of the abutment material and the connection type on the implant-abutment connection rigidity.
Methods:
The study evaluated eighteen implants with three different types of connections: external-hexagon, tri-channel, and conical connection. Half of the implants were connected to titanium abutments, and the other half to zirconia abutments, forming six study groups (n=3). The implants were submitted to 1,200,000 load cycles with a force amplitude of 90 N. During load application, the implant-abutment connection rigidity was determined in each cycle. The values obtained were analyzed with the two-way ANOVA test according to the abutment and connection types.
Results:
Rigidity tended to increase during loading cycles. The abutment material did not influence rigidity (p=0.883). The external-hexagon connection presented lower rigidity than the internal connections, with statistically significant differences (p=0.013).
Conclusions:
The abutment material does not influence the implant-abutment connection’s rigidity. The external-hexagon connection proved to be less rigid and stable than the internal connections.
Palavras-chave : Dental implant-abutment design; Dental implants; Titanium; Yttria-stabilized tetragonal zirconia.