Abutment rotational freedom on five implant systems with different internal connections

Bedouin, Yvan; Lefrançois, Etienne; Salomon, Jean-Pierre; Auroy, Pascal

doi:10.1016/j.prosdent.2021.04.027

Cited by 1 publication

(2 citation statements)

References 31 publications

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“…5 Internal connections have a lower incidence of screw loosening, better joint strength, 5,7 and improve the implant's ability to withstand axial loads compared to external-hexagon connections. 8 Several types of internal connections are currently available on the market, with varying geometries, and the main types are internal hexagon, tri-channel, crossfit, hexagonal conical, and cone morse. 5 The implant-abutment connection's stability has been identified as a major factor in the long-term success of dental implants.…”

Section: Introductionmentioning

confidence: 99%

“…9,10 The increased implant abutment instability also creates rotational freedom that may lead to a higher incidence of screw loosening. 8 However, few studies evaluate micromovements between the implant and the abutment with different connections, and the abutment material's effect has not been adequately reported in the dental literature. Therefore, the present research study aimed to evaluate the effects of the abutment material and the connection type on the implant-abutment connection's displacement amplitude and rigidity when subjected to cyclic loads.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of abutment and connection type on implant-abutment connection rigidity: an in vitro study

Mendes¹,

Vilhena²,

Portugal³

et al. 2022

j.rpemd

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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.

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