Journal article
Influence of Implant Inclination and Prosthetic Abutment Type on the Biomechanics of Implant-Supported Fixed Partial Dentures
The Journal of oral implantology, Vol.45(5), pp.343-349
10/01/2019
DOI: 10.1563/aaid-joi-D-18-00305
PMID: 31429636
Abstract
Obtaining parallelism during implant placement is often difficult, leading to inclination of implants. The present study evaluated the stress distribution in 3-unit fixed partial dentures supported by 2 implants with different inclinations and prosthetic abutments. Universal castable long abutments (UCLAs) or tapered abutments were used considering 17 degrees of implant angulation in different directions (mesial, distal, buccal, or lingual). To do so, 3-dimensional finite element models were built and exported to specific analysis software. Forces were applied to the functional cusps. Data were obtained with regard to the maximum principal and von Mises stresses (in MPa). No relevant differences were observed in the stress values in the cortical and cancellous bone nor in the prosthesis with UCLA or tapered abutments. However, a relevant stress reduction in the prosthetic screws of the tilted implant was observed when using UCLA abutments. According to the obtained results, it is possible to suggest that both UCLA or tapered abutments can be used for 3-unit fixed partial dentures when 1 of the implants is tilted. UCLA abutment might lead to less biomechanical problems related to screw loosening or fracture.
Details
- Title: Subtitle
- Influence of Implant Inclination and Prosthetic Abutment Type on the Biomechanics of Implant-Supported Fixed Partial Dentures
- Creators
- Victorio Poletto-Neto - Universidade Federal de PelotasPedro Henrique Wentz Tretto - Merid Fac, Sch Dent, Passo Fundo, RS, BrazilBruno Massucato ZenAtais Bacchi - Atitus EducaçãoMateus Bertolini Fernandes dos Santos - Univ Fed Pelotas, Sch Dent, Pelotas, RS, Brazil
- Resource Type
- Journal article
- Publication Details
- The Journal of oral implantology, Vol.45(5), pp.343-349
- DOI
- 10.1563/aaid-joi-D-18-00305
- PMID
- 31429636
- NLM abbreviation
- J Oral Implantol
- ISSN
- 0160-6972
- eISSN
- 1548-1336
- Publisher
- Allen Press Inc
- Number of pages
- 7
- Grant note
- 14/2014; 446733/2014-8 / (CHAMADA UNIVERSAL - MCTI/CNPq) of the Brazilian National Council for Scientific and Technological Development (CNPq); Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ)
- Language
- English
- Date published
- 10/01/2019
- Academic Unit
- Prosthodontics
- Record Identifier
- 9984945914402771
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