CC BY-NC-ND 4.0 · Eur J Dent 2015; 09(03): 329-339
DOI: 10.4103/1305-7456.163223
Original Article
Dental Investigation Society

Evaluation of stress distributions in peri-implant and periodontal bone tissues in 3- and 5-unit tooth and implant-supported fixed zirconia restorations by finite elements analysis

Sedat Guven
1   Department of Prosthetic Dentistry, Faculty of Dentistry, Dicle University, Diyarbakir, Turkiye
,
Koksal Beydemir
1   Department of Prosthetic Dentistry, Faculty of Dentistry, Dicle University, Diyarbakir, Turkiye
,
Serkan Dundar
2   Department of Periodontology, Faculty of Dentistry, Firat University, Elazig, Turkiye
,
Veysel Eratilla
3   Department of Prosthetic Dentistry, Ministry of Health, Diyarbakir Oral and Dental Health Center, Diyarbakir, Turkiye
› Author Affiliations
Further Information

Publication History

Publication Date:
04 September 2019 (online)

ABSTRACT

Objective: In this study, it is aimed to compare the distribution of stress on periodontal and peri-implant bone tissues in 3- and 5-unit-dental and implant-supported zirconia restorations using finite element analysis. Materials and Methods: Stress distribution formed in periodontal and peri-implant bone tissues as a result of chewing forces was analyzed in dental and implant-supported three-dimensional (3D) finite element models of zirconia restoration with 5-unit placed on the numbers of 43, 44, 45, 46, and 47 and with 3-unit placed on the number of 45, 46, and 47. Four different loading conditions were used. 200 N force was applied in 30° from the buccal inclination of number 43, 45, and 47 restorations separately and totally 850 N force was applied in 30° from the buccal inclination of whole restoration. The study was performed through static nonlinear analysis with the 3D finite element analysis method. Results: Stress accumulation in bone tissues in the tooth-supported model was found less than in implant-supported models. Stress accumulation was observed in the cervical portion of the implant in implant-supported models, and stress accumulation was observed surrounding bone of roots in tooth-supported models. The highest stress values were occurred in 5 unit implant-supported model in all loadings. Conclusion: In posterior restorations increased in the number of supported teeth and implant can reduce the destructive forces on periodontal and peri-implant bone tissues and may allow longer period retention of the restorations in the mouth.

 
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