Loss of tooth surface because of chemomechanical action is known as
**Core Concept**
The question is testing the understanding of the process of tooth wear due to chemical and mechanical forces. Enamel and dentin are the two major components of the tooth structure, and their wear can be caused by various factors, including chemical and mechanical actions.
**Why the Correct Answer is Right**
The correct answer refers to the process of attrition, which is the loss of tooth surface due to chemomechanical action. This occurs when the teeth come into contact with each other, causing wear and tear on the enamel and dentin. The process involves the action of saliva and food particles, which contain acids and enzymes that break down the tooth structure. Additionally, the mechanical action of the teeth rubbing against each other also contributes to the wear and tear.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because abrasion refers to the wear of tooth surface caused by external factors such as food particles, toothpaste, or other foreign objects. It is not related to chemomechanical action.
**Option B:** This option is incorrect because erosion refers to the loss of tooth surface caused by acid attacks from external sources such as stomach acid, gastric juice, or acidic beverages. While it is a type of tooth wear, it is not related to chemomechanical action.
**Option C:** This option is incorrect because abfraction refers to the loss of tooth surface caused by forces other than those related to mastication, such as orthodontic forces or parafunctional habits. It is not related to chemomechanical action.
**Clinical Pearl / High-Yield Fact**
To remember the types of tooth wear, use the acronym "ABCD": Abrasion, Erosion, Abfraction, and Attrition. Each type of wear has distinct characteristics and causes, and remembering this acronym can help you identify the correct answer in a multiple-choice question.
**Correct Answer:** .