Full Arch Implant Supported Fixed Dentures
This lecture was designed to discuss a denture that is supported by dental implants that a patient does not need to remove on a daily basis. This is often called a hybrid denture. Our office provides all types of options for implants, including replacing all of your missing teeth at once with a full arch implant supported denture. We also have dental implant options that involve dentures that the patient removes every day, but has the benefit of increased stability and retention.
Here is some information regarding some of the items covered in the lecture. This is certainly not all-encompassing, but just some of the key points the presenter made.
- Bone does not always have to be removed during the procedure, but it very frequently is to create the spacing necessary for the dental implant, abutment, acrylic, and teeth
- The dentist needs to evaluate the patient’s lip movements to determine where to place the teeth. The dentist does not want to have the transition zone showing.
- The following treatment considerations are needed prior to surgery: Does the patient need lip support from the denture and is the ridge (on the maxilla) visible when the patient smiles widely?
- A space analysis is needed. The best way to do this is to create a denture with ideal esthetics and function and then evaluate in the mouth
- Material choices can be a hybrid, metal, or metal-ceramic
- A traditional hybrid denture (denture in a day) requires 14mm for ideal thickness of denture teeth and acrylic above dental implants
- Spacing for the denture of less than 14mm leads to more frequent breakage of teeth and fracture
- If there is only 10mm to 12mm then metal ceramics or zirconia should be considered
- cantilevers should not be greater than 1.5-2x the anterior to posterior spread of the implants
- The normal number of implants in the maxilla are 4 to 8.
- Generally, the larger the dental implant AP spread, the better.
- Angled implants are often used in these procedures
- Mutually protected occlusion is often best
- When the maxilla and mandible are both being treated, you often do not want zirconia opposing zirconia
- final maxillary denture should have pressure on the edentulous ridge and should have a convex surface, while the mandible should have minimal to no contact.
- Prosthesis removal is controversial