Manuals_files/CD Manual 12.pdf - Removable Prosthodontics

Maxillo-mandibular Relationships - 30
9. Ensure the record bases are not in contact by scribing lines between the maxillary and
mandibular dentures on three widely separated areas. Remove the record bases,
superimpose the lines and check the posterior regions for areas of record base contact -
eliminate contacts between the record bases, or between the record base and the occlusion
rims (these will cause tilting movements of the record bases). There will be only one
position where all three lines will line up.
10. Continue to adjust the rims until the interocclusal distance is 2-4 mm and there is even
contact between the rims in the centric position.
A patient with excessive occlusal vertical dimension may have symptoms:
- Sore muscles
- Sore spots on the tissue bearing surfaces
- Rapid bone resorption
- clicking of dentures during speech
A patient with inadequate occlusal vertical dimension may have symptoms:
- Face looks collapsed - chin too close to the nose or protruding
- Fatigue when chewing
- Sore muscles or joints