Prävalenz periimplantärer Entzündungen bei teilbezahnten Patienten nach einer minimalen Beobachtungsdauer von 10 Jahren - eine retrospektive Querschnittsstudie
Prevalence of periimplant disease in partially edentulous patients after a minimal observational period of 10 years – a retrospective cross-sectional study
by Sina Butenschön
Date of Examination:2019-11-06
Date of issue:2019-10-24
Advisor:PD Dr. Sven Rinke
Referee:PD Dr. Sven Rinke
Referee:Prof. Dr. Michael Hülsmann
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Abstract
English
The aim of the retrospective cross-sectional study was to determine the prevalence rates of periimplant mucositis and periimplantitis in regard to different risk factors and the survival rate of the implant in different risk factors. The data of 74 patients were collected (44 female, 30 male) with the age ranging between 32 and 76 years old at the time of implant placement. All patients were treated with dental implants of the same type (Ankylos-Implantate, Dentsply Sirona, Mannheim) by one treating dentist between January 1999 and June 2006 in a private dental practice. Included were patients with a complete documentation (periodontal portrait, x-rays) after 10 years of clinical function. The patient related prevalence rate of periimplant mucositis (positive bleeding on probing, probing depth ≥4mm) accounted for 81,1%. In all smokers with and without a periodontal history a mucositis was detected. In non-smokers with periodontal history this number amounted to 76,3%. For the target variable mucositis, the logistic regression analysis showed an odds ratio of 8,24. Thus, this effect resided just above the stated significance level (p=0,053). The patient related prevalence rate of periimplantitis (positive bleeding on probing, probing depth ≥5mm, radiographic bone loss ≥3,5mm) accounted for 17,6%. In all smokers with a periodontal history the prevalence rate was 55,6%. In non-smokers this number amounted to 7,9%. For the target variable periimplantitis, the independent variable “total number of implants” showed a statistically significant effect with an odds ratio of 1,35 (p=0,0014) on the patient-level. The implant-based analysis described a significant effect with an odds ratio of 4,25 (p=0,0171) for the independent variable “smokers”. The cox-regression did not show a significant effect on the survival time of the implants for any of the investigated risk factors (sex, smoking status, periodontal history, number of implants, age at the time of implant placement). The results underline that smoking and the number of implants represent a risk factor for periimplantitis. For the risk factors periodontal history, sex, age at the time of implant placement, observation period and compliance no significantly higher risk of disease was observed.
Keywords: periimplant disease; prevalence; implant; periimplant mucositis; peri‐implantitis; cross‐sectional study