Prosthetic misfit of implant-supported prosthesis obtained by an alternative section method.
- Author:
Rodrigo TIOSSI
1
;
Hilmo Barreto Leite FALCAO-FILHO
;
Fabio Afranio DE AGUIAR
;
Renata Cristina Silveira RODRIGUES
;
Maria da Gloria Chiarello DE MATTOS
;
Ricardo Faria RIBEIRO
Author Information
- Publication Type:Original Article
- Keywords: Dental implants; Implant-supported dental prosthesis; Prosthesis fitting; Prosthodontics; Fixed partial denture; Dental soldering
- MeSH: Axis, Cervical Vertebra; Dental Implants; Dental Prosthesis, Implant-Supported; Dental Soldering; Denture, Partial, Fixed; Prostheses and Implants; Prosthesis Fitting; Prosthodontics; Welding
- From:The Journal of Advanced Prosthodontics 2012;4(2):89-92
- CountryRepublic of Korea
- Language:English
- Abstract: PURPOSE: Adequate passive-fitting of one-piece cast 3-element implant-supported frameworks is hard to achieve. This short communication aims to present an alternative method for section of one-piece cast frameworks and for casting implant-supported frameworks. MATERIALS AND METHODS: Three-unit implant-supported nickel-chromium (Ni-Cr) frameworks were tested for vertical misfit (n = 6). The frameworks were cast as one-piece (Group A) and later transversally sectioned through a diagonal axis (Group B) and compared to frameworks that were cast diagonally separated (Group C). All separated frameworks were laser welded. Only one side of the frameworks was screwed. RESULTS: The results on the tightened side were significantly lower in Group C (6.43 +/- 3.24 microm) when compared to Groups A (16.50 +/- 7.55 microm) and B (16.27 +/- 1.71 microm) (P<.05). On the opposite side, the diagonal section of the one-piece castings for laser welding showed significant improvement in the levels of misfit of the frameworks (Group A, 58.66+/-14.30 microm; Group B, 39.48+/-12.03 microm; Group C, 23.13+/-8.24 microm) (P<.05). CONCLUSION: Casting diagonally sectioned frameworks lowers the misfit levels. Lower misfit levels for the frameworks can be achieved by diagonally sectioning one-piece frameworks.
