Trauma From Occlusion Flashcards
_________ trauma from occlusion is when there is occlusion on stable periodontium.
Primary
_________ occlusal trauma occurs when there is trauma on weakened periodontium.
Secondary
What are some reversible methods of occlusal therapy?
- Night guard
- Extracoronal splints
- Muscle relaxants
- Muscle exercises
What are some irreversible methods of occlusal therapy?
- Intracoronal splints
- Selective grinding
- Ortho
- Orthognathic surgery
It is extremely important to know the ____________ to occlusal adjustments.
Contraindications
What are the indications for selective grinding?
- Perio occlusal trauma
- Post-ortho (fine tuning)
- Prior to extensive restorations
- Certain types of TMD
- Certain wear patterns
What are some contraindications for selective grinding?
- Severe malocclusion
- Well tolerated occlusion
- Severe wear
- Pain
- No endpoint can be seen
What are the major three goals of occlusal adjustment?
- Occlusal stability over time
- Axial loading of forces
- Anterior guidance (smooth and unrestrained)
What is the difference between comprehensive and limited occlusal grinding?
Comp: creating centric relation and correct excursive movements
Limited: Eliminating lateral “jiggling” forces
T/F: Non-working (balancing) contacts are a goal of occlusal adjustment.
False
Want to get rid of non-working contacts
What characteristics are desired in working contacts?
Canine guided and smooth
T/F: Recontouring sharp/irregular incisal edges is part of comprehensive occlusal adjustment.
True
T/F: The inner inclines face the occlusal table.
True
What are some methods of jaw manipulation in centric relation?
- Chin grasp
- Bilateral mandibular manipulation
- Leaf gauge
- Patient determined
How do you find the patient determined centric relation?
Chair at sixty degrees, patient opens, places tongue on soft palate, closes into centric
What are the worst types of contact relationships?
- Cusp-cusp
- Incline-incline
- Cusp-embrasure
- Cusp-incline
Centric relation interferences are often on the __________ maxillary inclines and the __________ mandibular inclines.
Mesial; distal
If you have a premature contact in centric relation, working and non-working movements how should you resolve it?
Trim the maxillary cusp tip
If there is a premature contact in centric relation but no contact in working/non-working movements how should it be resolved?
Deepen the fossa
How do you resolve an incline-incline contact in CR causing lateral displacement?
Recontour both cusp inner inclines (not cusp tips)
T/F: Holding cusp tips should be adjusted to achieve optimal occlusion.
False
Should adjust inclines, not tips
T/F: It is appropriate to adjust the cusp when there is a cusp-embrasure relationship.
True
What is the rule used to adjust non-working contacts?
PUBL
Adjust palatal upper inner incline and buccal lower inner incline
What are the acceptable working-side contacts?
Canine guided is ideal
Group function is acceptable if posterior teeth are not compromised
What is the rule for adjusting working contact interferences?
BULL
Adjust buccal cusp inner inclines and lower lingual inner inclines
What is the purpose of a periodontal splint?
- Immobilize excessively mobile teeth (class II or III)
2. Stabilize teeth after ortho
T/F: When splints are removed the, tooth which had previous mobility will have decreased mobility.
False
Splints don’t actually fix the mobility. They just stabilize it
T/F: Extracoronal splints require tooth preparation.
False
Intracoronal require preparation
Swing-lock partial dentures and bite-plane are considered ___________.
permanent extracoronal splints (no tooth preparation)
