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Article: Volume 44 Number 5 Page 448 - May 2017

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  Dent Update 2017; 44: 448-456

Fixed Prothodontics:  Ceramic Fracture in Metal-Ceramic Restorations: The Aetiology

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Abstract: All dental restorations are liable to failure during function. Failure could be biologic, aesthetic, mechanical or a combination. Ceramic restorations in particular, including metal-ceramics, are prone to mechanical fracture, especially the fracture of veneering porcelain. Fracture of a metal-ceramic restoration jeopardizes function as well as aesthetics. It is equally onerous to manage for both patient and dentist. Optimal management of such cases requires a detailed knowledge of the aetiology behind this phenomenon. The current paper aims to highlight possible causative factors involved in the mechanical failures of metal-ceramic restorations.

Clinical relevance: Ceramic fracture in metal-ceramic crowns and fixed partial dentures is routinely encountered in dental clinics. Knowledge of the aetiology is required to diagnose and manage such cases accurately as well as to avoid these errors in future.

Author notes: Ayesha Aslam, BDS, CHPE, PG Resident Prosthodontics, Army Medical College/Armed Forces Institute of Dentistry, National University of Medical Sciences (NUMS), Islamabad, Danish Azeem Khan, BDS, PG Resident Prosthodontics, Armed Forces Institute of Dentistry, Rawalpindi, Syed Hammad Hassan, BDS, FCPS, MSc Med Edu, Assistant Professor, Army Medical College/Armed Forces Institute of Dentistry, National University of Medical Sciences (NUMS), Islamabad and Bilal Ahmed, FCPS, BDS, FFD FRCSI-II(IRE), CMT, PhD, Res Associate Professor Department of Prosthodontics National University of Science & Technology (NUST), Islamabad, Pakistan.

Objective: To appreciate the multifactorial aetiology involved in mechanical failure of metal-ceramic restorations.