Number of dental abutments influencing the biomechanical behavior of tooth implant supported fixed partial dentures: A finite element analysis

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Cordeiro de Oliveira Janaina; Beatriz Sordi Mariane; Cabral da Cruz Ariadne Cristiane; Virginia Zanetti Raquel; Golcalves Betiol Ederson Aureo; Vieira Sergio Roberto; Zanetti Artemio Luiz

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Journal: JOURNAL OF DENTAL RESEARCH, DENTAL CLINICS, DENTAL PROSPECTS Year:2020 | Volume:14 | Issue:4 Page(s): 228-234

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Title

Number of dental abutments influencing the biomechanical behavior of tooth implant supported fixed partial dentures: A finite element analysis

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Dental prosthesis Finite element analysis Fixed partial denture Implant

supported

Abstract

Background. Local or systemic issues might prevent installing a sufficient number of dental implants for fixed prosthetic rehabilitation. Splinting dental implants and natural teeth in fixed dentures could overcome such limitations. Therefore, this study aimed to evaluate the influence of the number of dental abutments in the biomechanics of tooth‒ implant-supported fixed partial dentures (FPDs). The null hypothesis was that increasing the number of abutment teeth would not decrease the stress over the abutments and surrounding bone. Methods. Left mandibular lateral incisor, canine, premolars, and molars were reconstructed through computed tomography and edited using image processing software to represent a cemented fixed metal‒ ceramic partial denture. Three models were set to reduce the number of abutment teeth: 1) lateral incisor, canine, and first premolar; 2) canine and first premolar; 3) the first premolar. The second premolar and first molar were set as pontics, and the second molar was set as an implant abutment in all the models. Finite element analyses were performed under physiologic masticatory forces with axial and oblique loading vectors. Results. After simulation of axial loads, the stress peaks on the bone around the implant, the bone around the first premolar, and prosthetic structures did not exhibit significant changes when the number of abutment teeth decreased. However, under oblique loads, decreasing the number of abutment teeth increased stress peaks on the surrounding bone and denture. Conclusion. Increasing the number of dental abutments in tooth‒ implant-supported cemented FPD models decreased stresses on its constituents, favoring the prosthetic biomechanics.

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APA: Copy

Cordeiro de Oliveira, Janaina, Beatriz Sordi, Mariane, Cabral da Cruz, Ariadne Cristiane, Virginia Zanetti, Raquel, Golcalves Betiol, Ederson Aureo, Vieira, Sergio Roberto, & Zanetti, Artemio Luiz. (2020). Number of dental abutments influencing the biomechanical behavior of tooth implant supported fixed partial dentures: A finite element analysis. JOURNAL OF DENTAL RESEARCH, DENTAL CLINICS, DENTAL PROSPECTS, 14(4), 228-234. SID. https://sid.ir/paper/777219/en

Vancouver: Copy

Cordeiro de Oliveira Janaina, Beatriz Sordi Mariane, Cabral da Cruz Ariadne Cristiane, Virginia Zanetti Raquel, Golcalves Betiol Ederson Aureo, Vieira Sergio Roberto, Zanetti Artemio Luiz. Number of dental abutments influencing the biomechanical behavior of tooth implant supported fixed partial dentures: A finite element analysis. JOURNAL OF DENTAL RESEARCH, DENTAL CLINICS, DENTAL PROSPECTS[Internet]. 2020;14(4):228-234. Available from: https://sid.ir/paper/777219/en

IEEE: Copy

Janaina Cordeiro de Oliveira, Mariane Beatriz Sordi, Ariadne Cristiane Cabral da Cruz, Raquel Virginia Zanetti, Ederson Aureo Golcalves Betiol, Sergio Roberto Vieira, and Artemio Luiz Zanetti, “Number of dental abutments influencing the biomechanical behavior of tooth implant supported fixed partial dentures: A finite element analysis,” JOURNAL OF DENTAL RESEARCH, DENTAL CLINICS, DENTAL PROSPECTS, vol. 14, no. 4, pp. 228–234, 2020, [Online]. Available: https://sid.ir/paper/777219/en

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