Prosthetic misfit of implant-supported prosthesis obtained by an alternative section method
The Journal of Advanced Prosthodontics
; : 89-92, 2012.
Article
in En
| WPRIM
| ID: wpr-32796
Responsible library:
WPRO
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.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Prostheses and Implants
/
Prosthodontics
/
Dental Soldering
/
Axis, Cervical Vertebra
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Welding
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Dental Implants
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Prosthesis Fitting
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Dental Prosthesis, Implant-Supported
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Denture, Partial, Fixed
Language:
En
Journal:
The Journal of Advanced Prosthodontics
Year:
2012
Type:
Article