2026-06-28T20:30:38Zhttps://docta.ucm.es/rest/oai/request
oai:docta.ucm.es:20.500.14352/1157332025-03-18T12:27:47Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Gantier Takano, Marlene Kasumi author Xing, Yiyun author Ye, Ning author Aparicio, Conrado author Navarro Cuéllar, Carlos author Barbosa Cruz Meira, Josete author Siu Lun Fok, Alex 2025-01-23T09:07:18Z 2025-01-23T09:07:18Z 2025-01-22 Gantier-Takano, M.K., Xing, Y., Ye, N., Aparicio, C., Navarro Cuéllar, C., Meira, J.B.C. and Fok, A.S.L. (2025), Microgap Formation in Conical Implant-Abutment Connections Under Oblique Loading: Influence of Cone Angle Mismatch Through Finite Element Analysis. Clin Implant Dent Relat Res, 27: e13436. https://doi.org/10.1111/cid.13436 1523-0899 10.1111/cid.13436 https://hdl.handle.net/20.500.14352/115733 1708-8208 https://doi.org/10.1111/cid.13436 https://onlinelibrary.wiley.com/doi/10.1111/cid.13436 Objectives This study evaluated different designs of the conical implant-abutment connection (IAC) and their resistance to microgap formation under oblique loads as specified by the ISO standard for testing dental implants. Also evaluated was the effect of deviations from the ISO specifications on the outcomes. Methods Finite element analysis was conducted to compare the microgap formation and stress distribution among three conical IAC designs (A, B, and C) in two loading configurations: one compliant with ISO 14801 and one with a modified load adaptor (non-ISO). The different IAC designs varied in the taper, diameter, and cone height. The cone angle mismatch (Cam) between the implant and abutment was considered. A torque of 20 Ncm and oblique loads (up to 400 N) were simulated. Results The stresses produced by the screw-tightening torque varied among the different IAC designs. The contact height was approximately 0.3 mm for Designs A and B, and less than 0.03 mm for Design C. Under oblique loads, Design A maintained IAC sealing without gap formation up to 400 N. With the ISO adaptor, gaps appeared in Design B at 300 N and in Design C at 90 N. The non-ISO adaptor resulted in gap formation at 160 N for Design B and at 50 N for Design C. Conclusions The IAC design and cone angle mismatch significantly influenced microgap formation, with some designs showing zero gaps even when the oblique load reached 400 N. The non-ISO adaptor increased gap formation in IACs B and C. eng Microgap Formation in Conical Implant-Abutment Connections Under Oblique Loading: Influence of Cone Angle Mismatch Through Finite Element Analysis journal article 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URL https://docta.ucm.es/bitstreams/038b6dad-f4b1-4804-89c0-6167494bf2d8/download File MD5 e6dbc74b52d9c81d042db42efeed1b45 2114196 application/pdf Microgap Formation in Conical Implant‐Abutment Connections Under.pdf URL https://docta.ucm.es/bitstreams/6cdc4fef-febd-4e33-b11d-6477963dac72/download File MD5 aceddc32db11d81df2f68e006b78e3df 53684 text/plain Microgap Formation in Conical Implant‐Abutment Connections Under.pdf.txt