[Prevalence and etiologic factors of non-carious cervical lesions.  A study in a Senegalese population]. 
The non carious cervical lesion (NCCL) is a loss of tooth tissue at the neck of affected teeth that is unrelated to tooth decay.  They are commonly encountered in clinical practice and present in a variety of forms.  The purpose of this paper is to determine the prevalence of the NCCL in a Senegalese population.  From 655 patients, 112 with cervical lesions were identified i.e. a global prevalence of 17.10%.  The prevalence rate for abrasion was reported to be 77.70%, 12.50% for abfraction and 9.80% for erosion.  Etiological factors were studied for abrasion and erosion.  54% of the patients with abrasion used their toothbrush horizontally.  For erosion, only external factors were identified: consumption of acidic drinks (9 patients) or alcohol (1 patient) and professional environment (1 patient).  Dentists should consider these lesions in their daily practice.