Which one of the following is not a cause of abrasion?

Question

Quizplus · Accepted Answer

Abrasion is the wearing down of tooth structure due to external factors such as friction, pressure or force. Pipe placement by pipe smokers, playing wind instruments and holding needles or pins with the teeth all involve repetitive movements or pressure on the teeth which can cause abrasion over time. However, frequent sucking on lemons is not a cause of abrasion but rather can lead to erosion due to the acidic nature of lemons.

Which One of the Following Is Not a Cause of Abrasion