Recommendations for Guiding Sufaces
Posted on 10/28/2011
Guide plates are highly indicated for distal extension RPDs - i.e. arches where wholly edentulous areas are distal to natural teeth. An example would be an upper arch with teeth #5-12 still present with but with 1-4 and 13-16 missing. In such a case, the distal of #5 and the distal of #12 would be guide surfaces to contact the guide plate.
Here are some general recommendations for the guiding teeth:
1. The occlusal-gingival dimension should be 3-4mm
2. Guide surfaces should not extend beyond the height of contour
3. If natural tooth surface is parallel to the path of insertion/dislodgement, no preparation is needed.
4. Lingual surfaces can be prepared for lingual plating, but no preparation should be done in the gingival third.
During try in of the framework, relief of the metal guide plates is often indicated. In order to relieve the guide plates correctly, contact disclosing material should be applied to the guide plate. The framework should be seated and stresses to mimic biting forces should be applied. This process should be repeated until all binding forces are relieved.
*Portions of this post were adapted from the book: Atlas of Removable Partial denture Design by Dr. Russell J. Stratton and Dr. Frank J. Wiebelt published by Quintessence Publishing Co., Inc. in 1988. Pages 30-31
Here are some general recommendations for the guiding teeth:
1. The occlusal-gingival dimension should be 3-4mm
2. Guide surfaces should not extend beyond the height of contour
3. If natural tooth surface is parallel to the path of insertion/dislodgement, no preparation is needed.
4. Lingual surfaces can be prepared for lingual plating, but no preparation should be done in the gingival third.
During try in of the framework, relief of the metal guide plates is often indicated. In order to relieve the guide plates correctly, contact disclosing material should be applied to the guide plate. The framework should be seated and stresses to mimic biting forces should be applied. This process should be repeated until all binding forces are relieved.
*Portions of this post were adapted from the book: Atlas of Removable Partial denture Design by Dr. Russell J. Stratton and Dr. Frank J. Wiebelt published by Quintessence Publishing Co., Inc. in 1988. Pages 30-31
