| PROBLEM |
SOLUTION |
| Very tight fit of clasps, will not
allow frame to seat. |
Open clasp arm very slightly with
pliers to allow frame to seat.
|
| Rests not seating or frame resting on teeth. |
Apply disclosing agent to internal contact areas
of frame. Insert into mouth. Relieve premature
contacts until seating is achieved. Polish adjusted area. |
| Occlusal interference of rests or connectors. |
Identify premature contacts with articulation
paper, paste or spray.
Adjust metal with carbide burs and polish. Leave
minimum 1.5 mm thickness of metal.
If necessary, adjust opposing tooth structure. |
| Finished cast partial is almost, but not completely, seating. |
If adjustment of premature contacts does not
solve the problem, let patient wear cast partial
for 48 hours. Slight movement of teeth might have taken place between appointments. |
| Patient has problem inserting or removing cast partial. |
Practice path of insertion of cast partial on master model
repeatedly.
Demonstrate to patient in mouth. Let patient try
it until it is very easy to accomplish.
In rare cases, a notch in the acrylic will help the
patient remove the cast partial with their fingernail. |
| Addition of a tooth, clasp or section to an existing cast partial. |
In most cases, it is preferable to take the
impression in the mouth with the denture in
place and remove it with the impression. |
| Clasps loose on abutment. |
Adjust clasp with Ortho pliers. Ensure adjustment only made to
last 1/3 (i.e., the tip) of the clasp. Gradually adjust the clasp
step-by-step until the retention is adequate. |
