Test 2 Flashcards
4 vertical reference lines on the face
Bridge of the nose
Philtrum
Face midline
Dental midline
Pythagoras’ ratio:
Plato’s ratio:
1/1.618
1/1.733
4 keys to esthetic harmony
- Frame and reference
- Proportion and Idealism
- Symmetry
- Perspective and Illusion
9 components of smile
- Lip line
- Smile line
- Upper lip curvature
- Buccal corridor
- Axial alignment and gradation
- Dominance
- Embrasures
- Dental morphology
- Gingival morphology
Natural teeth have _ in the gingival third
Straight emergence profiles
Achieving a successful esthetic outcome necessitates a _
Soft tissue complex in harmony with adjacent teeth
Hierarchy of facial esthetics
- Macro
- Mini
- Micro
2 basic types of TMD
Myogenous TMD
Arthogenous TMD
___ is the basis of accurate diagnosis
A good history
3 factors that cause TMD
Define them
Predisposing factors -Increase the risk for TMD Initiating factors -Cause TMD Perpetuating factors -enhance progression of TMD
5 factors to consider when evaluating TMD
Occlusal condition Trauma Emotional stress Deep pain input Parafunctional activities
Two ways occlusion can affect TMD
Introduction of an acute condition
Presence of orthopedic instability
When does orthopedic stability occur
When MI is in harmony with the musculoskeletally stable position of the condyles in their fossae
What are the parafunctional activities of the masticatory system
Diurnal parafunctional activity
-clenching, grinding, cheek biting, thumb sucking
Nocturnal parafunctional activity
-bruxing
When should a dentist treat TMD
If occlusal interferences create muscle symptoms
When should prosthetic treatment of TMD be done
After reversible therapy has worked to treat
T/F supportive therapy cures TMD
False, it just treats symptoms (drugs/physical therapy)
4 types of occlusal appliances
Bite guard
Night guard
Interocclusal appliance
Orthopedic device
3 reasons to use occlusal appliances
- More stable joint position (temporarily)
- Optimum functional occlusion to reorganize neuro-muscular reflex
- Protect teeth
Occlusal appliance therapy is successful in _ % of TMD symptoms
70-90%
5 features of all occlusal appliances
- Alteration of occlusal condition (temporary)
- Alteration of condylar position
- Increase in vertical dimension
- Cognitive awareness
- Placebo effect
6 types of occlusal appliances
Stabilization appliance Anterior positioning appliance Anterior bite plane Posterior bite plane Pivoting appliance Soft (resilient) appliance
What does a stabilization appliance provide and what is the primary treatment goal
Provides optimum functional occlusion
Goal is to eliminate any orthopedic instability
