A new emphasis on caries measurement and management is required for the dental community. The dental professionals need new approaches in caries detection, its assessment, and management. The future of research, practice, and education in Cariology requires the development of an integrated definition of dental caries, and uniform systems for measuring the caries process. Keeping this in view, the International Caries Detection and Assessment System (ICDAS) has presented a new paradigm for the measurement of dental caries, which was developed from the systematic reviews of literature on the clinical caries detection system and other sources. The ICDAS can serve as a basis and benchmark for clinical and epidemiological research and inform dental undergraduate and postgraduate teaching in Cariology. The ICDAS system was developed to bring forward the current understanding of the process of initiation and progression of dental caries to the fields of epidemiological and clinical research.

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Introduction: Tooth wear is an ever increasing problem. However, literature on tooth wear prevalence is scarce. Therefore, the aim of the present study was to assess the prevalence and severity of tooth wear among 12 to 15 year old children of private schools of Farukhnagar block (Gurgaon) Haryana. Material and Methods: 973 school children in the age group of 12 to 15 year from the Gurgaon district were included in the study. All permanent teeth were examined by two trained calibrated examiners using CPITN probes in four surfaces, namely cervical (C), buccal (B), occlusal (O) or incisal (I) and palatal (P) or lingual (L) surface using Tooth Wear Index (TWI) . SPSS 19 was used for descriptive statistics and chi-square test. Results: A total of 26,230 teeth were examined. Overall prevalence of tooth wear was 29.7%. Most frequently af¬fected teeth were the Incisors (15.4%), followed by the Molars (7.4%). Incisal/occlusal surface was the most commonly affected surface. All the tooth wear lesions observed were mostly confined to the enamel (76.4%). Boys had statistically significant higher tooth wear prevalence (16.2%) compared to girls (13.5%). Dental fluorosis determined higher tooth wear prevalence (61.5%). Conclusion: There is high prevalence of tooth wear among school children, and boys have more tooth wear compared to girls. Dental fluorosis is associated with high risk for tooth wear. Thus tooth wear poses a significant public health problem, and steps should be taken for early diagnosis, prevention and management.

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