Classification of caries according to their site

Classification of caries according to their site
The most widely used classification worldwide is that described by Black, who defined the caries lesions according to their localization on the teeth. Class I caries are those located on the occlusal surfaces of the molars and premolars and on the cingulum of the anterior teeth, or on any structural defect of any tooth; class II caries are those affecting two surfaces of the molars or premolars; class III caries are those located on the proximal surfaces of the anterior teeth; class IV caries, those affecting the incisal angle of the anterior teeth; class V caries are located on the gingival third of the free faces, whether buccal or lingual. Finally, caries affecting the incisor border of the anterior teeth or the occlusive face of the posterior teeth are classified as class VI (5).

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