Azcarate-Velázquez, FranciscoCastillo De Oyague, RaquelOliveros-López, GuillermoTorres-Lagares, DanielMartínez González, Álvaro-JoséPérez-Velasco, AndreaLynch, Christopher DGutiérrez-Pérez, José-LuisSerrera-Figallo, María-Ángeles2025-01-082025-01-082019-09Azcarate-Velázquez F, Castillo-Oyagüe R, Oliveros-López LG, Torres-Lagares D, Martínez-González ÁJ, Pérez-Velasco A, Lynch CD, Gutiérrez-Pérez JL, Serrera-Figallo MÁ. Influence of bone quality on the mechanical interaction between implant and bone: A finite element analysis. J Dent. 2019 Sep;88:103161. doi: 10.1016/j.jdent.2019.06.0080300-571210.1016/j.jdent.2019.06.008https://hdl.handle.net/20.500.14352/113242Objectives: To evaluate the influence of bone type in terms of bone density and cortical bone thickness, on the stresses induced by two implants under compressive and oblique loads. Methods: A numerical simulation technique based on the finite element method was applied. Two implant types (M-12 and Astra Tech) were introduced in a model matrix whose geometry was extracted from a real CBCT radiograph of the posterior mandibular region. The Young's module and Poisson's coefficient of the bone qualities described by Misch were calculated. Loads with amplitude of 400 N were exerted in two directions: compressive and 15° oblique to 5 mm above the uppermost part of the implant. Results: The von Misses variant was analysed. Both implant types presented greater tension in the ​​cortical bone area than in the ​​trabecular bone region under compressive loading. For the oblique load condition, the stresses obtained in the cortical zone were significantly higher than those registered as a consequence of compressive loads in both implant types. Conclusions: Regardless of bone type, the M-12 implants presented lower tensions in the cortical bone than did the Astra implants. The tensions recorded for D3 and D4 bone types in the trabecular zone surrounding the M-12 implants were greater than those recorded for the Astra implants. Clinical significance: For both compressive and oblique loads, good mechanical behaviour was observed. The decrease in bone quality determines a worse stress distribution, and the cortical bone is overloaded. An efficient distribution of the forces may increase the implants' longevity.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal article1879-176Xhttps://doi.org/10.1016/j.jdent.2019.06.00831255639https://www.sciencedirect.com/science/article/abs/pii/S0300571219301320?via%3Dihubhttps://pubmed.ncbi.nlm.nih.gov/31255639/restricted access616.314-089.843Bone qualityDental implantsFinite element analysisOdontología (Odontología)Implantes dentales3213.13 Ortodoncia-Estomatología3213.04 Cirugía de Huesos