Additional Flashcards
Rotational movement is limited to about ___ of incisal separation before mandible begins to translate
20-25mm
Horizontal plane lateral movement
Non-working: forward and medial
working: Bennet movement
Frontal plane lateral movement
non working: down and medial
working: rotate and move lateral upward or lat downward
initial contact is located along ___ inclines of mandibular and ____ inclines of maxillary
Distal inclines of mandibular
Mesial inclines of maxillary
Maximum opening
50-60 mm
interocclusal rest distance
VDR-VDO
distance between reference points when in MI
Vertical dimension of occlusion (VDO)
distance between reference points when at rest
Vertical dimension at rest (VDR)
How is incisal guidance measured?
In degrees from horizontal plane
The amount that mandible must drop in anterior is determined by
incisal guidance
The amount that mandible must drop in posterior is determined by
angle of articular eminence (condylar guidance)
Posterior determinant of mandibular movement
inclination of articular eminence
Medial wall of glenoid fossa
Intercondylar distance
Anterior determinant of mandibular movement
Horizontal overlap
Vertical overlap
Other determinants of mandibular movement
Occlusal place
Curve o Spee
Neuromuscular response
Which is worse, poor job or equilibration or leaving malocclusion
poor job of equilibration
Group function mandibular working cusps travel
forward
downward
lateral
on lingual inclines of buccal max cusps
Equilibration procedures
reduction of interference w/ axis closure
reduction of interference with lateral excursion
Reduction of interference with protrusion
Harmonize anterior guidnace
Interference of arc closue
MUDL
Interference of line closure deviate to cheek
BULL
Interference of line closure deviate to tongue
LUBL
Non working interference
BULL
Patients with large horizontal overlap benefit more from
group function
Working side interfence
LUBL
Protrusive interfernece
DUML
Goal of prosthodontic treatment is
to preserve what remains
Emergence profile in gingival third of natural teeth
straight
Etiology of TMD
normal function plus an event leads to physiologic tolerance leading to TMD symptoms
How occlusion relates to TMD
Introduction of an acute condition
Presence of orthopedic instability
Orthopedic stability
MI position is in harmony w/ musculoskeletally stable position of condyles in fossa
True or false: Dentist should provide dental therapy if there are any TMD symptoms
False: only if occlusal interferences created the symptoms
Directive therapy vs supportive
Directive: Directly eliminate CAUSE and Consequences
Supportive:Alter patients SYMPTOMS, but no effect on cause
-pharmalogical, physical therapy
Occlusal appliance reduce _____ pain
myogenous pain
Common features of occlusal appliances (5)
Temp alteration of occlusal condition ALteral of condyar position INcrease vertical dimension Cognitive awareness Placebo effect
Types of occlusal appliances (6)
Stabilization Anterior positioning Anterior bite place Posterior bite plane Pivoting Soft resilient
