This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Physiological wearing away of tooth, due to tooth to tooth contact is known as: \nSelect and explain. \nA. Attrition, B. Abrasion, C. Abfraction, D. Dental erosion', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Attrition\xa0\nAttrition may be defined as the physiological wearing away of a tooth surface as a result of tooth-to-tooth\xa0contact as in mastication.\xa0This occurs only on the occlusal, incisal,\xa0and proximal surfaces of teeth not on\xa0other surfaces. This phenomenon is physiologic rather than pathologic and it is associated with the aging process.\xa0The older a person becomes, the more attrition is exhibited.\nAttrition commences at the time, the contact or occlusion occurs between adjacent or opposing teeth. It may be seen in the deciduous dentition as well as in the permanent, but severe attrition is seldom seen in primary teeth because they are not retained for any great period of time.\nReference: Shafer’s Textbook of ORAL PATHOLOGY Eighth Edition page no 648', 'role': 'assistant'}]