[8020 and prosthetic treatments: a review of literature].
OBJECTIVE
In order to reveal the relationship between 8020 movement and prosthodontic treatments, a systematic review was conducted concerning the clinical questions of 1) whether the longevity of abutment teeth is extended by prosthodontic treatment, 2) whether prosthodontic treatment can help extend the longevity of remaining teeth.


METHODS
In order to determine the survival rate of the crown and bridge, the prognosis of the abutment of crowns and bridges, the influence of removable partial denture and dental implant therapies on the survival of remaining teeth, and the survival rates of remaining teeth between when the teeth adjacent to missing teeth are treated prosthodontically and when not treated, a systematic review using computer online searches was conducted.


RESULTS
The following results were obtained: 1) Troubles rapidly increase 13 years after the placement of crowns and bridges. One-third and one-half of crowns and bridges can lose their function in 15 and 20 years after placement, 2) Crowns and bridges can extend the longevity of their abutment teeth, and 3) Implants and bridges can help extend the longevity of the remaining teeth.


CONCLUSIONS
The clinical impacts of prosthodontic treatments on the 8020 movement cannot be neglected, since crowns and bridges and implant therapies can extend the longevities of abutment teeth and teeth adjacent to edentulous spaces treated by implant.
Yatani
Hirofumi
H
Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Suita, 565-0871 Osaka. yatani@dent.osaka-u.ac.jp
D000368:Aged; D000369:Aged, 80 and over; D003442:Crowns; D000044:Dental Abutments / Q000592:standards*; D003829:Denture, Partial; D006293:Health Promotion; D006801:Humans; D007564:Japan; D011476:Prosthodontics