Manuals_files/CD Manual 12.pdf - Removable Prosthodontics
Manuals_files/CD Manual 12.pdf - Removable Prosthodontics
Manuals_files/CD Manual 12.pdf - Removable Prosthodontics
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Maxillo-mandibular Relationships - 28<br />
A. Arbitrary Adjustment of Occlusion Rims<br />
Prior to determining the occlusal vertical dimension of occlusion, the occlusion rims should<br />
be adjusted separately to using average dimension and guidelines. This arbitrary adjustment<br />
provides a ‘starting point’ for adjustments and should be fairly rapid. It should normally not<br />
take longer than 15 minutes per arch.<br />
1. Maxillary Occlusion Rim Adjustment<br />
- The maxillary wax rim should be slightly facial to the ridge to compensate esthetically<br />
for facial resorption of the bone<br />
- Anterior height should be 1-2 mm below the lip when the patient slightly smiles<br />
- The rim should touch the wet line of the lower lip, when the "F" or “V” sounds are<br />
spoken (have the patient count from 50 to 60)<br />
- The nasolabial angle should be approximately 90°, and the lips should be unstrained,<br />
with the vermilion border showing<br />
- The anterior-posterior orientation of the occlusal plane should be parallel to the alatragus<br />
line (Fox plane)<br />
- The mediolateral orientation of the occlusal plane should be parallel to the pupils<br />
2. Mandibular Occlusion Rim Adjustment:<br />
- The mandibular wax rim should be centered over the middle of the ridge to maximize<br />
stability, which is usually compromised in the mandible<br />
- The posterior height of the wax rim should intersect with a point l/2 - 2/3 up the<br />
retromolar pad<br />
- The anterior height of the wax rim should be even with the corners of the mouth when<br />
the lip is relaxed<br />
- The maxillary wax rim should have 1-2 mm horizontal overjet anteriorly and posteriorly<br />
when the patient is in a centric position<br />
-The patient should demonstrate unstrained lips, with the vermilion border showing<br />
B. Establishing the Occlusal Vertical Dimension<br />
Physiologic Rest Position (PRP) - at rest, when the lips are barely touching, the<br />
occlusion rims should not touch<br />
Interocclusal Distance (ID) is the space between opposing occlusal surfaces or wax rims<br />
while a person is in the physiologic rest position - usually 2-4 mm.
Change language