A study on the marginal fit of CAD/CAM 3-unit bridges.
10.4047/jkap.2011.49.2.101
- Author:
Ki Hong LEE
1
;
In Sung YEO
;
Sung Hun KIM
;
Jung Suk HAN
;
Jai Bong LEE
;
Jae Ho YANG
Author Information
1. Department of Prosthodontics, College of Dentistry, Seoul National University, Seoul, Korea. jhoyang@snu.ac.kr
- Publication Type:Original Article ; In Vitro
- Keywords:
CAD/CAM;
LAVA;
PFG;
Marginal fit
- MeSH:
Incisor;
Tooth
- From:The Journal of Korean Academy of Prosthodontics
2011;49(2):101-105
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: The purpose of this study was to assess the marginal fit of three-unit bridges produced using LAVA CAD/CAM (computer-aided design/computer-aided manufacturing) system and conventional PFG in vitro. MATERIALS AND METHODS: #11, 13 resin teeth were prepared on dentiform, then duplicated. Twenty resin models were fabricated, ten for PFG 3-unit bridges and ten for LAVA 3-unit bridges. Each bridge was cemented on the resin model. Marginal discrepancy was measured with stereoscopic microscope (Nikon DS-Fi 1, Nikon, Japan) at a magnification of x75. Independent t-test was done for the statistical analysis. RESULTS: The mean marginal discrepancy values and standard deviations of the PFG bridges was 97.1 +/- 18.7 microm for incisors, 76.6 +/- 21.8 microm for canines; that of the LAVA bridges was 90.4 +/- 26.7 microm for incisor, 110.2 +/- 30.2 microm for canines. The mean marginal discrepancy between PFG and LAVA for incisor did not show significant difference (P>.05). But for canine, the mean marginal discrepancy of PFG bridges was smaller than that of LAVA bridges (P<.05). CONCLUSION: The LAVA CAD/CAM 3-unit bridges and the PFG 3-unit bridges showed clinically acceptable marginal discrepancy.
