Regressive Alterations of Teeth

Question 1

• Tooth to tooth contact - slow wearing away of teeth
• Painless because secondary dentin is laid down
• Pulp becomes contricted
• Flat widening of incisal table and intercuspal distances and VDO decreases

Answer 1

Attrition

Question 2

• Slow, no caries
• Not physiologic
• Mechanical wearing of tooth structure

Answer 2

Abrasion

Question 3

• Slow, chemical action of acids
• Non-carious, not mechanical
• Acid acts faster than abrasion or attrition
• Can get symptoms as tooth structure is gone before secondary dentin can be placed

Answer 3

Erosion