fd7fc830_afunction_habits___Remedy_Land_Category_of_tooth_wear_Molar
[Incisor and canine] 4 Dentin surface is minimal [Bicuspids] One large dentin surface and few small ones [Molar] 
Dentin surface is shown on three or more places
Dental attrition or tooth attrition causes: bruxism or grinding the teeth, clenching - parafunction habits - Remedy Land
Molar