Thermoplastic Flexible Partial Denture Adjustment Techniques:
1. Common Adjustment Issues
Open Bite: Check occlusion and reduce as needed.
Overextended Flange: Trim flange accordingly.
Clasp Tightness: Adjust by submerging in hot water, bending, and cooling.
2. Adjustment Procedure
Use specialized burs designed for thermoplastics.
Set hand piece to low speed (32,000 to 35,000 rpm) for light, constant motion scraping.
Avoid excessive pressure to prevent burning or distortion.
Rubber wheels or points are effective for smoothing and polishing.
Threads can be removed with a sharp blade if present.
3. Recommended Adjustment Tools
Carbide Burs: for cutting through thermoplastics.
Green Mounted Stones: ideal for chairside adjustments.
Large and Small Rubber Points: for smoothing surfaces.
Carving Knife: to remove fibers during adjustment.