Guiding Surfaces - Tooth Preparation for Guide Plates
Posted on 03/27/2012
Tooth preparation for the RPD framework starts with the preparation of guiding surfaces. Rests should not be prepared before the guiding surfaces as any reduction to the guiding surfaces after the rest is prepared will compromise the integrity of the rest seat.
Key points for the preparation of guiding surfaces for guide plates are as follows:
1. A cylindrical diamond stone or a carbide bur should be used.
2. Preparations should be parallel to each other and parallel to the desired path of insertion and dislodgement.
3. Preparation should curve bucco-lingually to follow the natural tooth contour
4. Preparation can cover about 2/3 of the occlusal-gingival length of the tooth. This is approximately 3-4mm.
5. Avoid any adjustment to the cervical portion of the tooth.
It should be noted that if the teeth are parallel for the desired path of insertion and dislodgement, tooth preparation is not required. Additionally,
Guide surfaces including those for guide plates, minor connectors, lingual plating and esthetics
*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.
Key points for the preparation of guiding surfaces for guide plates are as follows:
1. A cylindrical diamond stone or a carbide bur should be used.
2. Preparations should be parallel to each other and parallel to the desired path of insertion and dislodgement.
3. Preparation should curve bucco-lingually to follow the natural tooth contour
4. Preparation can cover about 2/3 of the occlusal-gingival length of the tooth. This is approximately 3-4mm.
5. Avoid any adjustment to the cervical portion of the tooth.
It should be noted that if the teeth are parallel for the desired path of insertion and dislodgement, tooth preparation is not required. Additionally,
Guide surfaces including those for guide plates, minor connectors, lingual plating and esthetics
*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.
