Principles of Occlusal Equilibration Flashcards
Define occlusal equilibration.
The correction of stressful occlusal contacts through selective grinding
T/F. Doing a poor job on malocclusion is far worse than on equilibration.
False. Doing a poor job of equilibration is far worse than leaving the malocclusion.
What are the two goals of occlusal equilibration?
- improve functional and esthetic relationships between maxillary and mandibular teeth.
- eliminate TMD
What is the order of treatment planning for occlusal therapy?
- selective grinding
- fixed prostodontics
- orthodontic therapy
- orthognathic surgery
T/F. Because of esthetics, one should avoid changing the buccal and change the lingual.
True.
When the condyles are in CR and the opposing centric cusp tip contacts the inner third incline, then ___ ___ is most appropriate.
Selective Grinding
According to the rule of thirds, if the middle third contact then what treatment should be used? outer third?
fixed prosthodontics
orthodontic treatment
What procedure alters the occlusal surfaces of teeth to improve the overall contact pattern?
selective grinding. All corrections should be made within the enamel structure.
The ___ (shorter/longer) the slide, the more likely it is that selective grinding can be accomplished within the confines of the enamel.
shorter
Primary interferences that deviate the condyle forward produce a(n) ____ slide.
anterior
What is the basic contact rule to correct an anterior slide?
MUDL
what is MUDL?
grind the mesial inclines of upper teeth or the distal inclines of lower teeth
What type of interference cause the mandible to deviate to the right or left from the initial contact point (CO) to MI?
line of closure interferences
If the interference causes the mandible to deviate toward the cheek, what is the grinding rule?
BULL
What is BULL?
grind the buccal inclines of upper teeth or the lingual inclines of lower teeth
If the interfering incline causes the mandible to deviate toward the tongue, what is the grinding rule?
LUBL
What is LUBL?
grind the lingual incline of upper teeth or the buccal incline of lower teeth
What grinding rule is used with non-working interference?
BULL
T/F. Patients with horizontal overlap (crossbite) will benefit more from a group function in working side excursions.
True.
What is the basic rule for equilibrating working side contacts?
LUBL
What are the only teeth that should touch during protrusive excursions?
anterior teeth
What is the rule for eliminating protrusive contacts?
DUML
During protrusion, posterior disclusion is accomplished by both the ___ guidance and the ____ movement of the protrusive condyles.
anterior; downward
With steep anterior guidance, correction of protrusive interference is extensive.
False. Correction is minimal. A flat anterior guidance relies more on condyles for disclusion and corrections are more extensive.
