Long-term implant success at the Academy for Oral Implantology: 8-year follow-up and risk factor analysis

Abstract

PurposeRehabilitation of the incomplete dentition by means of osseointegrated dental implants represents a highly predictable and widespread therapy; however, little is known about potential risk factors that may impair long-term implant success.MethodsFrom 2004 to 2012, a total of 13,147 implants were placed in 4,316 patients at the Academy for Oral Implantology in Vienna. The survival rates after 8 years of follow-up were computed using the Kaplan-Meier method, and the impact of patient- and implant-related risk factors was assessed.ResultsOverall implant survival was 97% and was not associated with implant length (P=0.930), implant diameter (P=0.704), jaw location (P=0.545), implant position (P=0.450), local bone quality (P=0.398), previous bone augmentation surgery (P=0.617), or patient-related factors including osteoporosis (P=0.661), age (P=0.575), or diabetes mellitus (P=0.928). However, smoking increased the risk of implant failure by 3 folds (P<0.001) and a positive history of periodontal disease doubled the failure risk (P=0.001).ConclusionsSumming up the long-term results of well over 10,000 implants at the Academy for Oral Implantology in Vienna it can be concluded that there is only a limited number of patients that do not qualify for implant therapy and may thus not benefit from improved quality of life associated with fixed implant-retained prostheses.Graphical Abstract

Long-term Retrospective Study based on Implant Success Rate in Patients with Risk Factor: 15-year Follow-up

“…Failure due to bone augmentation was minimum, i.e., 1.62%, which was similar to those reported by Busenlechner et al; 13 however, when bone augmentation was in association with smoking, periodontal disease, and diabetes, its failure rate was 40%, and p-value being 0.002, which is highly significant. A study conducted by Salvi et al 14 …”

Dental implant survival rate in well-controlled diabetic patients. A systematic review.

“…However, the study did not indicate the number of implants placed and therefore failure rates were based on the number of patients. A similar situation occurs in the study of Busenlechner et al 25 , and that was the reason it was not included in this review, although it had an acceptable methodological quality (Jadad equal to 3).…”

Risk Factors associated with Dental Implant Failure: A Study of 302 Implants placed in a Regional Center

“…1 Its growing use can be attributed to the fact that it offers patients a more sophisticated reconstructive alternative, conserving the tooth structure of the residual dentition and eliminating the need for removable prostheses. 2 Typically, the hallmark of a successful dental implant is when there has been osseointegration at the implant-bone interface. If this fails, then a fibro-osseous integration occurs at the interface resulting in implant instability and ultimately failure (Fig.…”