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http://acervodigital.unesp.br/handle/11449/15361
- Title:
- Photoelastic analysis to compare implant-retained and conventional obturator dentures
- Universidade Estadual Paulista (UNESP)
- 1083-3668
- Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
- The use of photoelastic analysis contributes to the rehabilitation of patients with oral-sinus-nasal sequelae, which in turn affect important functions such as chewing, swallowing, and speech. The prosthetic rehabilitation with implant-retained dentures is a suitable treatment option. The purpose of this study was to verify, by using a photoelastic analysis, the stress distribution in implant-retained palatal obturator dentures (relined or not) associated with different attachment systems (O-ring, bar-clip, and bar-clip associated with distally placed O-rings). Two photoelastic models were obtained from an experimental maxillary cast presenting an oral-nasal communication. One model had two 13-mm length implants placed on the left region. A total of eight colorless maxillary obturators were fabricated and subsequently four of them were relined with soft silicone soft, and three had attachment systems associated. The assembly (model/attachment system/prosthesis) was positioned in a circular polariscope and a 100-N load was applied at 10 mm/s. The results showed that the denture relining influenced the distribution and amount of stress on the models. The O-ring group displayed the lowest stress levels, followed by bar-clip system associated with distally placed O-rings and bar-clip groups. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.JBO.17.6.061203]
- 1-Jun-2012
- Journal of Biomedical Optics. Bellingham: Spie-soc Photo-optical Instrumentation Engineers, v. 17, n. 6, p. 4, 2012.
- 4
- Spie-soc Photo-optical Instrumentation Engineers
- dental implant
- maxillectomy
- photoelastic
- denture liners
- http://dx.doi.org/10.1117/1.JBO.17.6.061203
- http://hdl.handle.net/11449/15361
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/15361
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