THE IMPACT OF A HIGH MAGNIFICATION APPROACH FOR TEETH PREPARATIONS ON THE MARGINAL FIT OF CAD/CAM MONOLITHIC LITHIUM DISILICATE CROWNS (IN VITRO STUDY)

Document Type : Original Article

Authors

1 Conservative Dentistry Department, Faculty of Dentistry, Alexandria University

2 Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University.

3 Lecturer, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University.

Abstract

Introduction: Marginal integrity is a challenging goal revealing an accurate restoration with definite marginal adaptation thus inflammation of gingival tissues and bone destruction correlate directly with a poor marginal property of the restoration. These days improved vision is essential in dentistry upgrading exactness and flawlessness.
Objectives: To assess the impact of amplification on the marginal adaptation of CAD/CAM monolithic lithium disilicate crowns.
Materials and Methods: In-vitro study using 16 upper right cuspid typodont teeth; divided into two entities according to tooth preparation approach (n=8). Group I teeth preparation without magnification (control group), Group II teeth preparation utilizing the dental operating microscope (DOM) under magnification of 16x. Optical impressions were taken through scanning by Sirona inEOS X5 extra-oral scanner where full anatomical crowns were structured, processed, Sintered and glazed. CBCT was utilized to quantify the minimal gapes before and after cementation/aging.
Results: Marginal gaps were significantly increased after cementation and aging in both groups yet still inside the worthy minimal gap values. Group II demonstrated recognizable less marginal gaps.
Conclusions: Operating microscopy OM is a significant supplement to the armamentarium of present-day dentistry. It helps set the bar of greatness and flawlessness at the most elevated level including every dental field.

Keywords

Main Subjects

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Alexandria Dental Journal
Volume 46, Issue 1
B (Endodontics, Prosthodontics, Fixed prosthodontics, Conservative dentistry, Dental Biomaterials)
April 2021
Pages 106-110

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