A retrospective cohort study on peri‐implant complications in implants
A retrospective cohort study on peri‐implant complications in implants up to 10 years of functional loading in periodontally compromised patients
Abstract
Background
Prevalence of peri‐implantitis is directly proportional to the time of functional loading. The aim of this retrospective study was to assess the survival and success rates as well as the incidence of peri‐implantitis among patients with a history of periodontitis and among implants with 1 to 10 years of functional loading.
Methods
We evaluated clinical records of periodontally compromised patients treated between January 1998 and July 2002, with implants enrolled in a supportive periodontal and peri‐implant treatment follow‐up program. The following assessment indexes during follow‐up were recorded: suppuration on probing, modified bleeding on probing, probing depth, implant mobility, bone changes, and criteria of success of Albrektsson.
Results
Clinical data of 475 patients with 1,991 implants were analyzed for a period of 10 years of functional loading. The survival and success rates were 91.8% and 75.4%, respectively, and the cumulative incidence of peri‐implantitis among patients was 24.4%. The survival rate was 96.1%, and the success rate was 83.7% among implants.
The incidence of peri‐implantitis exhibited a peak rate after the seventh year (2.1%). The prevalence of peri‐implantitis increased from 3.2% to 9.7% between 5 and 10 years of follow‐up, and the peri‐implantitis rate among implants was 12.9% after 10 years of functional loading.
Conclusion
Peri‐implantitis begins to appear more frequently after the fifth year of functional loading, especially between the seventh and eighth years of function.
Serial posts:
- A retrospective cohort study on peri‐implant complications in implants
- Introduction : A study on peri‐implant complications in implants
- Materials & methods : A study on peri‐implant complications in implants (1)
- Materials & methods : A study on peri‐implant complications in implants (2)
- Materials & methods : A study on peri‐implant complications in implants (3)
- Materials & methods : A study on peri‐implant complications in implants (4)
- Materials & methods : A study on peri‐implant complications in implants (5)
- Results : A study on peri‐implant complications in implants
- Discussion : A study on peri‐implant complications in implants (1)
- Discussion : A study on peri‐implant complications in implants (2)
- Discussion : A study on peri‐implant complications in implants (3)
- Conclusion : A study on peri‐implant complications in implants
- Table 1. Patient and implant distribution among groups
- Table 2. Baseline information (1,991 implants)
- Table 3. Life table analysis and cumulative survival and success rate
- Table 4. Survival and success rate at implant and patient level
- Figure 1. Peri‐implantitis over the study period of 10 years at patient and implant level
- Table 5. Differences between 5 years and 10 years of function