Exam 1 - Part 4

Question 1

What’s the term for loss of tooth structure occlusally and interproximally due to direct tooth to tooth contact?

Answer 1

Attrition

Question 2

What’s the term for loss of tooth structure from mechanical habit?

Answer 2

Abrasion

Question 3

What’s the term for loss of tooth structure from chemical process, most often non-bacterial acid dissolution?

Answer 3

Erosion

Question 4

What is erosion due to exposure to gastric secretions?

Answer 4

Permylosys

Question 5

What is the term for loss of tooth structure due to repeated tooth flexure caused by occlusal stress?

Answer 5

Abfraction

Question 6

What is demastication?

Answer 6

Combined effect of attrition and abrasion - chewing tobacco between opposing teeth

Question 7

What is secondary dentin vs reparative dentin?

Answer 7

• Secondary - physiologic deposition throughout life
• Reparative - localized formation of dentin on pulp-dentin border

Question 8

What are dentinal tubules devoid of cytoplasmic processes of odontoblasts?

Answer 8

Dead tracts

Question 9

What are some pulp calcifications called?

Answer 9

• Denticles
• Pulp Stones
• Diffuse linear calcifications

Question 10

What is the abnormally thickening of cementum?

Answer 10

Hypercementosis

Question 11

What are some causes of hypercementosis?

Answer 11

• Localized
  
  • Inflammation
  • Excessive occlusion
  • Fracture/repair
  • Loss of antagonist
  • Idiopathic
• Generalized
  
  • Paget’s disease of bone

Question 12

What are calcifications in the PDL called?

Answer 12

Cementicles

Question 13

How does dental root resorption happen?

Answer 13

• External
  
  • Physiologic
  • Pathologic
    
    • Inflammation
    • Tumors/cysts
    • Reimplanted teeth
    • Mechanical force
    • Imacted
• Internal
  
  • Injury to pulpal tissue
  • Pink tooth of mummery