title: The rate of cervical abrasion in dental students.
abstract: Abrasion of the cervical region of teeth has been attributed to mechanical cleaning procedures using dentisfrices containing abrasives of various kinds. In the present study the loss of substance during a 26 month period in the cervical region of the upper left premolars of dental students was measured directly by means of a micrometer. The average rate of abrasion was found to be 0.2 micro per day. No difference was observed between the group using a "non-abrasive" dentifrice and that employing a conventional paste. The risk associated with pulp exposure under the conditions observed is briefly discussed.
mesh_terms: D000328:Adult; D001641:Bicuspid; D003802:Dentifrices / Q000009:adverse effects*; D006801:Humans; D011143:Polyvinyl Chloride / Q000009:adverse effects; D013997:Time Factors; D014072:Tooth Abrasion / Q000209:etiology*; D014099:Toothbrushing / Q000009:adverse effects*; D014100:Toothpastes / Q000009:adverse effects*
chemical_list: D003802:Dentifrices; D014100:Toothpastes; D011143:Polyvinyl Chloride