ABSTRACT
Non carious dental lesions are destructions of dental external surfaces originating from non bacterial cause in opposition to dental caries. We distinguish 5 types of non carious dental lesions: attrition, abrasion, abfraction, erosion and demastication. These lesions may be pathological or physiological. Data dealing with them are not very numerous in the literature. Their study shows a real interest in conservative dentistry because of problems both aesthetic and functional they set We carried out an epidemiological trial in the department of Dakar with as aim providing data on the prevalence of these lesions. Our results have disclosed the following rates of prevalence: 60% of attrition, 25,55% of abrasion, 7,22% of abfraction, 5,55% of demastication and 1,68% of erosion. The results indicate once more the importance of the need for clinical evaluation of those dental lesions.
