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A Radiographic Classification for Retrograde Peri-implantitis.
Rucha Shah1, Raison Thomas2, A B Tarun Kumar2
1Lecturer, Department of Periodontics, Bapuji Dental College and Hospital, Davangere, Karnataka, India, Phone: +917676279879,
The Journal of Contemporary Dental Practice
|June 25, 2016
Summary
Retrograde peri-implantitis (RPI) is an inflammatory condition affecting the implant apex. A new classification system based on radiographic bone loss aids in RPI assessment and treatment planning.
Area of Science:
- Dental Implantology
- Periodontology
- Oral Surgery
Background:
- Retrograde peri-implantitis (RPI) presents a diagnostic and therapeutic challenge, affecting only the apical portion of osseointegrated implants.
- A lack of standardized classification and treatment algorithms complicates management.
Purpose of the Study:
- To introduce a novel classification system for retrograde peri-implantitis (RPI).
- The classification is based on the radiographic extent of bone loss around the implant apex.
Main Methods:
- A systematic literature search was performed using keywords 'retrograde peri-implantitis' and 'implant periapical lesion'.
- Preoperative intraoral periapical radiographs (IOPAs) from 36 articles (54 images) were compiled and analyzed.
Main Results:
- A three-class system (Mild, Moderate, Advanced) was proposed based on the percentage of implant length affected by apical bone loss.
- Treatment options and prognostic indicators were suggested for each RPI class.
Conclusions:
- The proposed RPI classification offers a simple and reproducible method for radiographic assessment.
- This system can guide prognosis determination and treatment planning for retrograde peri-implantitis.

