We have our big quiz tomorrow, which I am taking a small break from studying for to bring you some pictures of this years projects. In corner number one we have a RPD made of white triad, wax, and some fake acrylic teeth. It is worth 10% of our lab grade.
After many lab projects I can deduce what looks good and what doesn’t. This RPD looks like crap. I would never put it in any ones mouth, not even a dead dog. I’ll tell you why. The triad we were using was supposed to be 1mm thick. This makes it very thin, so it kept breaking. Normally this would be waxed up on a model and then cast into metal. If you look closely at the occlusal surfaces of the molars then you will see some small preparations made to the teeth. These are rest seats and would normally be filled in. For all intensive purposes our goal was to fit the teeth and give the thing proper occlusion. Check.
We are now working on our complete denture. We are half way done with setting teeth in wax on the articulator. We will actually send the maxillary arch to be processed. Here are what the custom impression trays look like for complete dentures:
Just remember the following things when it comes to dentures and you will do great:
Retention – Resistance to vertical displacement of the denture away from the denture bearing surfaces during function.
Stability – Resistance to lateral displacement of the denture during function.
Support – Resistance to vertical forces of occlusion. Factors of the denture bearing surfaces that resist/absorb occlusal forces during function.
