Accuracy of a proposed implant impression technique using abutments and metal framework.
10.4047/jap.2010.2.1.25
- Author:
Hyeok Jae LEE
;
Young Jun LIM
;
Chang Whe KIM
;
Jung Han CHOI
;
Myung Joo KIM
- Publication Type:Original Article
- Keywords:
Implant;
Abutment;
Metal framework;
Vertical gap;
Angulation
- MeSH:
Crowns;
Light;
Resin Cements
- From:The Journal of Advanced Prosthodontics
2010;2(1):25-31
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: This study compared the accuracy of an abutment-framework (A-F) taken with open tray impression technique combining cementon crown abutments, a metal framework and resin cement to closed tray and resin-splinted open tray impression techniques for the 3-implant definitive casts. The effect of angulation on the accuracy of these 3 techniques was also evaluated. MATERIAL AND METHODS: Three definitive casts, each with 3 linearly positioned implant analogs at relative angulations 0, 30, and 40 degrees, were fabricated with passively fitted corresponding reference frameworks. Ten impressions were made and poured, using each of the 3 techniques on each of the 3 definitive casts. To record the vertical gap between reference frameworks and analogs in duplicate casts, a light microscope with image processing was used. Data were analyzed by two-way analysis of variance and the Tukey test. RESULTS: The open tray techniques showed significantly smaller vertical gaps compare to closed tray technique (P < .05). The closed tray and the resin-splinted open tray technique showed significantly different vertical gaps according to the angulation of implant (P < .05), but the A-F impression technique did not (P > .05). CONCLUSION: The accuracy of the A-F impression technique was superior to that of conventional techniques, and was not affected by the angulation of the implants.
