Loss of Tooth Substances Flashcards
1
Q
What is abfraction?
A
Loss of tooth substances at the cervical areas of teeth caused by tensile and compressive forces during tooth flexure
2
Q
Compressive forces
A
Saucer shaped
3
Q
Tensile forces
A
V shaped
4
Q
Saucer shaped
A
Compression
5
Q
V shaped
A
Tension
6
Q
What is erosion?
A
Wear of teeth from chemical/dissolving process. loss of tooth structure from the action of dietary or gastric acids
7
Q
What is abrasion?
A
Wearing away of teeth from a mechanical/rubbing process. Refers to any unnatural type of mechanical wear such as tooth brushing, toothpicks, pens, pencils, etc.
8
Q
What is attrition?
A
Normal physiological wear of teeth from chewing and tooth-to-tooth contact w/out foreign substances. Mastication. Always involves occlusal or incisal surfaces and may be due to excessive bruxism.
