Epidemiological investigation of non-carious cervical lesions and possible etiological factors.

This study showed high frequency of NCCLs among subjects of different age. Premolars were the most frequently affected. Age, frequent consumption of citrus fruit and lower salivary pH value were associated with an increased occurrence of NCCLs. Chewing gums habit was associated with an decreased occurrence of NCCLs. NCCL, abrasion, erosion, abfraction, saliva.