直接法とCAD/CAM法によるPMMA仮封修復物の破折抵抗性：in vitro研究

Varsha Mangtani¹, Subhash Sonkesriya¹, Alka Gupta¹

¹Department of Prosthodontics and Crown & Bridge, Government College of Dentistry, Indore, Madhya Pradesh, India.

|December 30, 2025

Abstract:

The fracture resistance of polymethyl methacrylate (PMMA)-based provisional crowns fabricated using two techniques: conventional direct and Computer-Aided Design/Computer-Aided Manufacturing (CAD-CAM) milling is of interest to dentist. Hence, sixty extracted premolar teeth were restored and tested under simulated occlusal forces. Data showed that CAD-CAM milled restorations exhibited significantly higher fracture resistance than conventionally fabricated crowns. The study shows the mechanical superiority and clinical reliability of CAD-CAM technology. Thus, we show support its use for improved provisional restoration outcomes.

キーワード:

CAD/CAM PMMA 破折抵抗性仮封修復物テンポラリークラウン

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