Clinical Observation and Failure Analysis of CAD/CAM Glass-ceramic Inlay in Restoration of Molar Caries

doi:10.13701/j.cnki.kqyxyj.2019.06.010

Abstract

Abstract: Objective: To observe the clinical efficacy and analyze the failure reason of CAD/CAM glass-ceramic inlay in restoration of molar caries. Methods: 85 patients with 102 molar teeth were recruited, including 30 molar teeth with typeⅠcavity and 72 with typeⅡcavity. According to the modified USPHS criteria, clinical efficacy were evaluated 6 months, 12 months, and 18 months after CAD/CAM inlay restoration, and the cause of repair failure was analyzed. Results: After 6 months of treatment, the success rates of type Ⅰ cavity was 100% and type Ⅱcavity was 95.8%; 1 case of inlay was fallen off, 1 case was food impaction, and 1 case was postoperative sensitivity. 12 months after treatment, the success rates of typeⅠcavity was 96.7%, 1 case was broken; the success rates of typeⅡcavity was 94.4%, 3 cases were fallen off, 1 case was secondary pulpitis. 18 months after treatment, the success rates of typeⅠcavity was 93.3%, 2 cases were broken, the success rates of typeⅡcavity was 93.1%, 5 cases were fallen off. All fallen inlay were occurred in typeⅡcavity with deep caries. Conclusion: CAD/CAM glass-ceramic inlay can be used as a reliable choice for the restoration of molar caries. But dentist should select suitable cases for a successful inlay restoration.

Key words: CAD/CAM, Glass-ceramic inlay, Molar caries, TypeⅠcavity, TypeⅡcavity

FENG Er-mei, LIU Yao, SHI Yan. Clinical Observation and Failure Analysis of CAD/CAM Glass-ceramic Inlay in Restoration of Molar Caries[J]. Journal of Oral Science Research, 2019, 35(6): 551-554.

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