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Noncarious cervical lesions (NCCL) are characterized by loss of tooth structure in the cervical area, and originated by mechanisms unrelated to dental caries process. This study investigated the correlation of NCCL (severity and involvement) with the following factors: age, gender, diet, parafunctional habits, dental hygiene, gastric disorders and occlusal aspects. Fifty patients (36 female and 14 male) aged between 20 and 62 years (mean age of 40.9 years) were evaluated. The evaluation consisted of questionnaires and intraoral clinical examination. A Tooth Wear Index was used to classify the severity of NCCL and wear of the incisal/ occlusal surface. Results indicate that first premolars (20,5%), second premolars (19,5%), canine (14%), first molars (13,9%) and second molars (11,6%) were the teeth most affected by NCCL. There was correlation between the age of patients and the percentage of teeth affected, meaning that the older the patient, the higher the percentage of teeth affected with NCCL (p=0,003). Patients with daily intake of acidic foods and beverages presented a significant relationship with the severity of NCCL (p=0,038) and also a higher percentage of teeth affected by NCCL (p=0,014). There was no significant relationship between NCCL (severity and percentage of affected teeth) and gender of patients, number of daily brushings, teeth clenching, bruxism, gastric disorders, force applied during toothbrushing and characteristics of the toothbrushes. There was a small correlation (r=0,079) between NCCL and the wear of incisal/occlusal surface. Regarding the severity of NCCL, no significant statistical differences were observed between the teeth involved or not in the lateral excursive movement.

Estudo in vivo da etiologia das lesões cervicais não cariosas