Toothwear 1 Flashcards
1
Q
what can cause tooth surface loss?
A
everything
- caries
- trauma
- developmental problems
- tooth wear
2
Q
what are the 4 main causes of tooth wear?
A
- attrition
- abrasion
- erosion
- abfraction
3
Q
what is attrition?
A
tooth-tooth contact causing wear (physiological)
4
Q
what is abrasion?
A
physical wear of tooth through abnormal mechanical process independent of occlusion (like toothbrushing)
5
Q
where is the most common sites of abrasion on teeth?
A
labial/buccal, cervical on canine & premolars
6
Q
what is erosion?
A
loss of tooth surface by chemical process (not involving bacteria)
7
Q
what are signs of erosion in a dentition?
A
‘cupping’ of occlusal surfaces of the molars & incisal edges of anteriors
8
Q
what is abfraction?
A
loss of hard tissue from occlusal forces leading to stresses at the cervical areas of the tooth
9
Q
A
