PURPOSE The purpose of this study was to investigate the fracture loads and mode of failure of all-ceramic crowns fabricated using Top-Ceram and compare it with all-ceramic crowns fabricated from well-established systems: IPS-Empress II, In-Ceram. MATERIALS AND METHODS Thirty all-ceramic crowns were fabricated; 10 IPS-Empress II, 10 In-Ceram alumina and 10 Top-Ceram. Instron testing machine w...

Fracture of ceramic materials has been one of the most frequently reported complications for all-ceramic restorations. The aim of the study was to analyze the fracture features of hot-pressed ceramic crowns in order to evaluate areas susceptible to crack initiation and crack propagation correlated with stress areas. The crowns were inspected visually to determine the shape and orientation of th...

After root canal obturation of sound posterior teeth, dentists are always in hurry of giving full crown. They are not serious in giving proper post endodontic restoration which results in fracture of tooth or restoration, if patient delays the full crown treatment. The inherent causes of failures are rarely evaluated. Thus, it was the purpose of this study to analyze the opinion of practicing d...

this report presents a case of 10 years old girl who was referred to the pediatric dentistry clinic sustaining a severe trauma led to crown fracture and intrusive luxation of immature maxillary incisors. antibiotic therapies were initiated at first visit, and after surgical exposure both intruded and extruded teeth were endodontically treated by calcium hydroxide. orthodontic repositioning was ...