Marginal and Internal Fit of CAD/CAM and Slip-cast Made Zirconia Copings

Overview

Journal J Dent Res Dent Clin Dent Prospects

Specialty Dentistry

Date 2012 Sep 20

PMID 22991635

Citations 8

Authors

Kianoosh Torabi Ardekani

Ahmad Hassan Ahangari

Leila Farahi

Affiliations

Soon will be listed here.

Abstract

Background And Aims: CAD/CAM systems facilitate the use of zirconia substructure materials for all-ceramic copings. This in vitro study investigated the marginal and internal fit of zirconia copings made with CAD/CAM system and slip-casting method.

Materials And Methods: Sixteen CAD/CAM made zirconia copings and 16 slip-cast made zirconia copings were fabri-cated and cemented with glass-ionomer cement to their respective master abutment models, and thickness of the cement layer was measured at specific measuring points with stereomicroscope.

Results: In the left wall, the mean axial internal gap was greater in group one than group two (62.49 vs. 48.14) (P =0.007), in the right wall the mean axial internal gap was greater in group one than group two (44.87 vs. 40.91) (P = 0.465). The oc-clusal internal gap was greater in group one than group two (118.81 vs. 102.11) (P =0.423). The mean marginal gap also was greater in group one than group two (46.67 vs. 44.29) (P = 0.863). The differences in marginal fit between these two methods were not statistically significant, except for left axial internal gap that was significantly greater in the CAD/CAM system than conventional slip-cast technique (P =0.007).

Conclusion: It was concluded that this CAD/CAM system can compete well with conventional systems for clinical fit, and can achieve good in vitro marginal fit.

Citing Articles

In Vitro Study of Comparative Evaluation of Marginal and Internal Fit between Heat-Pressed and CAD-CAM Monolithic Glass-Ceramic Restorations after Thermal Aging.

Vasiliu R, Porojan S, Porojan L Materials (Basel). 2020; 13(19).

PMID: 32977603 PMC: 7579449. DOI: 10.3390/ma13194239.

Strength and aging resistance of monolithic zirconia: an update to current knowledge.

Kontonasaki E, Giasimakopoulos P, Rigos A Jpn Dent Sci Rev. 2019; 56(1):1-23.

PMID: 31768195 PMC: 6872834. DOI: 10.1016/j.jdsr.2019.09.002.

Marginal Accuracy and Internal Fit of 3-D Printing Laser-Sintered Co-Cr Alloy Copings.

Kim M, Choi Y, Kim S, Heo S, Koak J Materials (Basel). 2017; 10(1).

PMID: 28772451 PMC: 5344574. DOI: 10.3390/ma10010093.

[Comparative evaluation of the marginal accuracy of single crowns fabricated computer using aided design/computer aided manufacturing methods, self-curing resin and Luxatemp].

Jianming Y, Ying T, Feng P, Weixing X Hua Xi Kou Qiang Yi Xue Za Zhi. 2017; 34(6):575-578.

PMID: 28318156 PMC: 7030855. DOI: 10.7518/hxkq.2016.06.005.

[Influence of coping material selection and porcelain firing on marginal and internal fit of computer-aided design/computer- aided manufacturing of zirconia and titanium ceramic implant-supported crowns].

Cuiling L, Liyuan Y, Xu G, Hong S Hua Xi Kou Qiang Yi Xue Za Zhi. 2016; 34(3):262-6.

PMID: 27526450 PMC: 7030845.

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