Exam 1-Regressive Alterations of Teeth

Question 1

Term: loss of tooth structure occlusally and interproximally due to direct tooth to tooth contact. Physiological or pathological. Ex. Bruxism

Answer 1

Attrition

Question 2

Term: loss of tooth structure from mechanical habit. Ex. Cervical abrasion

Answer 2

Abrasion

Question 3

Term: loss of tooth structure from chemical process, most often non-bacterial acid dissolution.

Answer 3

Erosion

Question 4

Term: erosion due to exposure to gastric secretions.

Answer 4

PERI-MYLO-SYS

Question 5

Term: loss of tooth structure due to repeated tooth flexture caused by occlusal stress.

Answer 5

Abfraction

Question 6

Term: combined effect of attrition and abrasion. Ex. Chewing tobacco between opposing teeth

Answer 6

DEMASTICATION

Question 7

Term: physiologic deposition of dentin throughout life.

Answer 7

Secondary dentin

Question 8

Term: localized formation of dentin on pulp-dentin border, protective response of pulp to seal itself off from external stimuli.

Answer 8

Reparative dentin (tertiary dentin)

Question 9

Term: dentinal tubules devoid of cytoplasmic processes of odontoblasts

Answer 9

Dead tracts (dentinal sclerosis) both are purely academic and have no clinical relevancy

Question 10

What are the three types of pulp calcifications?

Answer 10

1.Denticles 2.Pulp Stones 3.D-L-C’s…..Diffuse Linear Calcifications

Question 11

Demasitcation = _______ + _______

Answer 11

attrition + abrasion

Question 12

Term: Formation of calcification in the dentinal tubules that gradually obliterate dentinal tubules.

Answer 12

Dentin sclerosis

Question 13

Term: Dentinal tubules devoid of odontoblast processes as the result of injury.

Answer 13

Dead tracts

Question 14

TIME TO GO HARD! What are the 6 diseases associated with PROMINENT pulp calcifications????

Answer 14

1.Dentin Dysplasia II 2.Pulpal Dysplasia 3.Regional OdontoDysplasia 4.Tumoral Calcinosis 5.Calcinosis Universalis 6.Ehlers-Danlos Syndrome

Question 15

Term: abnormal thickening of cementum

Answer 15

Hypercementosis

Question 16

What % of hypercementosis is limited to one tooth (localized)

Answer 16

98%

Question 17

What are the 5 possible causes for LOCALIZED hypercementosis?

Answer 17

1.Inflammation 2.Excessive occlusion 3.LOSS OF ANTAGONIST!! (supra eruption!) 4.Fracture/Repair 5.idiopathic

Question 18

What is the ONLY systemic indicator for GENERALIZED hypercementosis we need to know for boards?

Answer 18

Paget’s disease of the bone

Question 19

Which regressive alteration of the teeth is associated with Paget’s disease of the bone?

Answer 19

generalized hypercementosis

Question 20

What is a calcification within the PDL called? (NO clinical significance)

Answer 20

a Cementicle

Question 21

External Root Resorption can be both physiologic AND/OR pathologic….What are the six possible PATHOLOGIC factors that would cause external root resorption?

Answer 21

1.Inflammation 2.Tumors & Cysts 3.Reimplanted teeth 4.excessive forces (mechanical, occlusal, trauma) 5.impacted teeth 6.Paget’s disease of bone

Question 22

Which tumor (cancer type) commonly metastasizes to bone and therefore be causing external root resorption?

Answer 22

metastatic breast cancer

Question 23

Term: A uniform, round to oval radiolucent enlargement of the root canal or chamber. Most often occurs following injury to pulpal tissue. The process can continue as long as vital pulp tissue remains….Pathologic, usually asymptomatic.

Answer 23

INTERNAL ROOT RESORPTION

Question 24

Term: internal root/pulp resorption that shows through clinically

Answer 24

Pink tooth of Mummery