2 edition of comparison of the accuracy of fit of two different methods for fabricating implant-prosthodontic frameworks. found in the catalog.
comparison of the accuracy of fit of two different methods for fabricating implant-prosthodontic frameworks.
Sara Abdulaziz Al-Fadda
Written in English
Background. It is hypothesized that frameworks fabricated using the laser scanned Computer Numeric Controlled (CNC) technique are more accurately fitted to the prosthetic analogue than conventional cast-over ones. Objective. To compare the in vitro three-dimensional accuracy of fit of the CNC-milled implant titanium frameworks to conventional cast-over ones. Methods. Nine cast-over frameworks were fabricated on mandibular models following the conventional fabrication technique. The fabrication of the laser-scanned CNC milled frameworks involved scanning of the implants analogues" using a Coordinate Measuring machine (CMM). The cast-over frameworks were then laser scanned, and CNC frameworks that match their outline were fabricated. The accuracy of fit was measured using CMM and a special computer software. Results. The CNC frameworks showed significantly less distortion along the x-axis and the horizontal plane (x+y) (p = 0.01). The y, z axes and the three-dimensional distortion showed an overall trend of less distortion in the CNC frameworks. Conclusion . The CNC-milling technique yields a more accurate fit than the conventional technique. However, in vivo studies are needed to investigate the clinical significance of this recorded difference.
|The Physical Object|
|Number of Pages||109|
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