An overdenture using a single dental implant is sometimes placed as treatment. This is if a conventional complete denture is not possible or sufficient number of implants can not be placed because of financial reasons. Successful cases have been reported although there is still insufficient scientific research. The relationship to the antagonist tooth should be fully considered.
In full mouth reconstruction with dental implants, one-piece splint is no longer necessary. The dispersal of stress during mastication is effectively enabled by improvement of implant designs such as development of progressive power threading, tapered body and internal connections. FPD is fabricated in 2 to 4 pieces depending on the length, diameter, number and path of placement of dental implant, thus, passive and more accurate fit can be obtained.
Flapless surgery is only recommended in limited cases with excellent bone quality and bone mass because it is a blind technique. Fenestration can occur in regions with bony concavities such as the anterior or premolar teeth of the maxilla. In these cases, extra attention is needed to avoid fenestration in placement of dental implants. Flapless surgery should also be avoided in patients with periodontal problems.
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