This one picture says it all. This is a temporary fixed all on 4 denture conversion bridge using 4 zygomatic implants. It doesn’t so much matter the type and number of implants as it does the shape of the underside of the bridge.
The bridge is convex in all aspects. If it is concave it can catch food and be harder to clean.
Sometimes I have no option but to make some areas concave in order to give better support of your lips. I try to avoid it though.
Proper diagnosis and planning of the bone leveling is what often determines this. It is determined BEFORE surgery…not when starting to make teeth.
Most bridges should have 5-6 implants but this is a special case.
Ramsey A. Amin, D.D.S.
Diplomate of the American Board of Oral Implantology /Implant Dentistry
Fellow-American Academy of Implant Dentistry