An Alternative Efficient Technique For Thin Tooth Sectioning

Background: The importance of tooth sectioning is realized in disasters such as earthquake, airplane crash investigation, terror, micro leakage studies, age estimation etc. The objective of this study was to develop a simple method to make thin sections (approximately 100 mm) from freshly extracted teeth. Methods: One hundred and twenty human premolars recently extracted for orthodontic purpose were used for this study. The teeth were stored in 0.5% chorlaramine for 2 weeks and were not allowed to dry at any stage of the experiment. The teeth were thoroughly washed in distilled water teeth and then were sectioned buccolingually from crown to the root portion. Results: A detailed embedding-cutting-mounting procedure is described. The prepared thin ground sections were then examined under a Polarised light microscope for the enamel and the dentine, as well as the caries lesions can clearly be distinguished. Conclusion: This is an effective and efficient method for preparation of ground sections in which the hard tissue details are preserved.

Essential guidelines for forensic dentistry

Teeth can be used as a weapon of attack or defence. Dentistry has much to offer to law enforcement agencies in the uncovering and solution of crime. The permanent teeth develop throughout the first two decades of life, and physiologic variations, pathologies, and effects of dental therapy may be recorded in the hard tissues of the remaining dentition throughout life and beyond. It is the role of the dentist to help extract this information and use it in the identification of the unknown body. Human teeth and dental restorations have proven to remain stable during a long time as well as in extreme situations such as fire. Therefore, dentist can play an important part in the identification of severe mutilated bodies of unknown persons. The teeth may also be used as weapon and, under certain circumstances, may leave information as to the identity of the biter. Analysis of bite marks is the second major responsibility of the forensic dentist. The general practitioner has a major role to play in providing the accurate dental records on which much of forensic activity is based

Polishing of contemporary aesthetic restorative material: a review

Efficient and simple polishing techniques are invaluable for achieving superior aesthetics from composite resins in line with their growing popularity. A surface roughness of 0.7 pin to 1.44 Nm is enough to promote plaque accumulation whereas a well-finished and smooth surface will deter plaque and stain accumulation for a longer period of time. Ultimately, it is the characteristics of the filler and resin particles together with the right combination of finishing instruments which will determine the smoothness of composites on placement. This is a review article