Non carious lesions on the teeth:
The non carious lesions defined as a Loss of the tooth substance due to causes other than fermenting carbohydrate by Bacteria. So in non carious lesions no bacterial involvement in the loss of tooth hard substance. There are multiple causes of non carious lesions and every cause associated with one type of the non carious lesions, for example the Toothbrush is the most common cause for abrasion which is a type of the non carious lesions.
The Types of non carious lesions :
1-Attrition (wear)
2-Abrasion
4-Erosion
5-Enamel hypo-plasia
6-Enamel hypo-calcification
7-Discoloration
8-Malformation 9-Fracture
10-Dentinogen
11-Amelogenesisimperfecta
We have a lot of non carious lesions