In this study, we collected and analysed the review results of 100 patients over 18 years of age who received implant fixed restorations in the Department of Stomatology of the First Hospital of Nanjing, China. The aim was to investigate the incidence of loss of contact between implant restorations and adjacent teeth and its influencing factors. Our findings may provide better insights for treatment planning and prevention of PCL.
(1) Patients over the age of 18, can fully understand the nature of the proposed and be able to sign a consent form.
(2) patients who underwent dental implant surgery and delivered prostheses for more than 3 months in Nanjing First Hospital.
(1) The implant site or adjacent teeth were severely injured and the adjacent teeth were extracted;
(2) the same quadrant orthodontic or splint treatment;
(3) the prostheses have been removed due to failure or need further treatment;
(4) implant-supported prostheses in both mesial and distal sites;