Nine- to fourteen-year follow-up of implant treatment. Part II: presence of peri-implant lesions.
OBJECTIVE
The aim of this study was to analyse the proportions of peri-implant lesions at implants after 9-14 years of function.


METHODS
Two hundred and ninety-four patients underwent implant therapy during the years 1988-1992 in Kristianstad County. These individuals were recalled to the speciality clinic 1 and 5 years after placement of the suprastructure. Between 2000 and 2002, 218 patients with 999 implants were examined clinically and radiographically.


RESULTS
Forty-eight per cent of the implants had probing depth > or =4 mm and bleeding on probing (peri-implant mucositis). In 20.4% of the implants, the bone level was located 3.1 mm apical to the implant shoulder. Progressive bone loss (> or =1.8 mm) during the observation period was found in 7.7% of the implants. Peri-implantitis defined as bone loss > or =1.8 mm compared with 1-year data (the apical border of the bony defect located at or apical to the third thread, i.e. a minimum of 3.1 mm apical to the implant shoulder), combined with bleeding on probing and or pus, were diagnosed among 16% of the patients and 6.6% of the implants.


CONCLUSIONS
After 10 years in use without systematic supportive treatment, peri-implant lesions is a common clinical entity adjacent to titanium implants.
Department of Health Sciences, Kristianstad University, Sweden.
Ann-Marie
AM
Roos-Jansåker
Christel
C
Lindahl
Helena
H
Renvert
Stefan
S
Renvert
D016301:Alveolar Bone Loss / Q000145:classification / Q000000981:diagnostic imaging; D015921:Dental Implants; D005500:Follow-Up Studies; D005884:Gingival Hemorrhage / Q000145:classification; D006801:Humans; D008334:Mandible / Q000000981:diagnostic imaging / Q000601:surgery; D008437:Maxilla / Q000000981:diagnostic imaging / Q000601:surgery; D010510:Periodontal Diseases / Q000145:classification* / Q000000981:diagnostic imaging; D010512:Periodontal Index; D010514:Periodontal Pocket / Q000145:classification; D010518:Periodontitis / Q000145:classification; D011859:Radiography; D013492:Suppuration; D014025:Titanium
D015921:Dental Implants; D014025:Titanium