Rito-Macedo Fabiano, Barroso-Oliveira Millena, Paranhos Luiz-Renato, Rodrigues-Brum Joelson, Pereira-Lima Igor-Felipe, Gomes-França Fabiana-Mantovani, de Brito-Junior Rui-Barbosa
Assistant Professor of Periodontics, State University of Amazonas (UEA), Manaus, Amazonas, Brazil.
Post-Graduation Program in Dentistry, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil.
J Clin Exp Dent. 2021 Dec 1;13(12):e1167-e1173. doi: 10.4317/jced.58930. eCollection 2021 Dec.
The study aimed to assess the influence of different implant insertion angles and depths on the stresses produced on the surface of peri-implant bone tissue under axial and oblique loading.
The entire study followed the recommendations of the Checklist for Reporting Studies (CRIS). The implant was placed in the region of element 36, according to the following models: M1 (0 mm / 0°); M2 (0 mm / 17°); M3 (0 mm / 30°); M4 (2 mm / 0°); M5 (2 mm / 17°); M6 (2 mm / 30°). The models were subjected to loading, with intensity of 100 N. The stress assessment followed the Mohr-Coulomb criterion and qualitative and quantitative analyses were performed.
Angled implants and installed below the bone crest produced the highest stresses on the cortical bone, and the axial load presented the highest stress peaks on the buccal side of implants perpendicular to the bone crest. Regardless of the type of load (axial or oblique), inclined implants presented the highest stress peaks on the lingual side of the cortical bone.
Implants installed perpendicular to and with a prosthetic platform at bone crest height provided the lowest stresses to peri-implant bone tissue under both axial and oblique loading. Finite element analysis, dental implants, axial loading, biomechanical phenomena.
本研究旨在评估不同种植体植入角度和深度对轴向和斜向加载下种植体周围骨组织表面产生的应力的影响。
整个研究遵循《研究报告清单》（CRIS）的建议。根据以下模型将种植体放置在36号元素区域：M1（0毫米/0°）；M2（0毫米/17°）；M3（0毫米/30°）；M4（2毫米/0°）；M5（2毫米/17°）；M6（2毫米/30°）。对模型施加100 N的载荷。应力评估遵循莫尔-库仑准则，并进行了定性和定量分析。
倾斜种植体且种植在牙槽嵴下方时，皮质骨上产生的应力最高，轴向载荷在垂直于牙槽嵴的种植体颊侧呈现出最高应力峰值。无论载荷类型（轴向或斜向）如何，倾斜种植体在皮质骨舌侧呈现出最高应力峰值。
在轴向和斜向加载下，垂直植入且修复平台位于牙槽嵴高度的种植体对种植体周围骨组织产生的应力最低。有限元分析、牙种植体、轴向加载、生物力学现象。
