6 - Occlusion 2 Flashcards
1
Q
What do you use to assess tooth contacts?
A
- articulating paper
- miller’s forceps
2
Q
When should you mark tooth contacts?
A
- before prep
- removing a restoration
- after placing a restoration or crown
3
Q
Define functional cusps.
A
- cusps that occlude with the opposing teeth in ICP
- lingual cusps of uppers
- buccal cusps of lowers
4
Q
Define non-functional cusps.
A
- cusps that don’t occlude with the opposing teeth in ICP
- buccal cusps of uppers
- lingual cusps of lowers
5
Q
Define ICP contact.
A
- when the lingual cusp of an upper molar contacts the fossa of a lower molar
- when the buccal cusp of a lower molar contacts the fossa of an upper molar
6
Q
Define overbite.
A
Vertical overlap of incisors
7
Q
What is the most common overbite?
A
Class II Div 2
8
Q
Define overjet.
A
Relationship between upper and lower teeth in horizontal plane
9
Q
Define AOB.
A
- anterior open bite
- lack of vertical overlap of anterior teeth when posterior teeth are in occlusion
10
Q
Define posterior/lateral open bite.
A
Failure of contact between posterior teeth when teeth are in full occlusion
11
Q
Define canine guidance.
A
- mandible moves laterally
- contact only between the working side canine
- no posterior contacts
- mutually protected occlusion
12
Q
Define group function.
A
- mandible moves laterally
- multiple tooth contacts on working side
- bilateral group function seen in severe toothwear
13
Q
Define protrusion.
A
- condyles move forwards and downwards
- only incisors ± canines contact
- no posterior contacts
14
Q
Define occlusal interference.
A
Undesirable tooth contacts that may produce mandibular deviation during closure to ICP
15
Q
What is a working side contact?
A
Posterior tooth contact on the working side (similar cusps contact)
