We describe a modification to the most common method of preparing sperm whale teeth for age determination. The first mandibular or nearest straightest tooth was sectioned in half with slow-rotating band saw, polished and, rather than subjecting 10% formic acid 30 hours, etched 15% acid. exposure time each varied depending on size, and especially, density tooth. Clear, well defined growth layer ...

BACKGROUND/AIM Fracture toughness determines functional crown strenght and prevents damages on ceramics during mastication. There is a lack of relevant literature data about fracture toughness of crowns made by feather-edge preparation. Mechanical testing of ceramic samples is supposed to show if feather-edge tooth preparation is a successful method for making ceramic crowns without any risk of...

PURPOSE The aim of the study was to evaluate the efficiency of GC Tooth Mousse in the treatment of patients with dentin hypersensitivity caused by various factors. MATERIAL AND METHODS The evaluation was carried out on 101 teeth with dentin hypersensitivity in 13 patients. Patients with gingival recession and exposed dental necks and those with non-carious lesions at the initial stage were se...

Computer-aided design and computer-aided manufacturing (CAD/CAM) dentistry has been in use for more than 2 decades. Recent improvements in this technology have made CAD/CAM restorations a viable alternative for routine dental care. This technology is being taught in dental schools to prepare students for contemporary dental practice and is particularly useful in unique restorative situations th...

STATEMENT OF THE PROBLEM No recent literature has reviewed the current scientific knowledge on complete coverage tooth preparations. PURPOSE This article traces the historic evolution of complete coverage tooth preparations and identifies guidelines for scientific tooth preparations. MATERIAL AND METHODS Literature covering 250 years of clinical practice was reviewed with emphasis on scient...

The periodontium is the supporting tissues for the tooth organ and is vulnerable to destruction, arising from overpopulating pathogenic bacteria and spirochaetes. The presence of microbes together with host responses can destroy large parts of the periodontium sometimes leading tooth loss. Permanent tissue replacements are made possible with tissue engineering techniques. However, existing peri...

Background and Aim:Root canal preparation with rotary instruments may cause dentinal cracks leading to tooth fracture. The aim of this study was to compare three different rotary systems ProTaper, RaCe and Niti Tee on formation of dentinal cracks following root canal preparation. Materials and Methods: In this experimental study, 50 extracted mandibular first molars were selected. Teeth having ...