Nine- to fourteen-year follow-up of implant treatment. Part II: presence of peri-implant lesions
: Ann Marie Roos-JansaÃ‚Â°ker
: journal of clinical periodontology
Objectives: The aim of this study was to analyse the proportions of peri-implant
lesions at implants after 9Ã¢â‚¬â€œ14 years of function.
Material and Methods: Two hundred and ninety-four patients underwent implant
therapy during the years 1988Ã¢â‚¬â€œ1992 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
Results: Forty-eight per cent of the implants had probing depth X4mm and bleeding
on probing (peri-implant mucositis). In 20.4% of the implants, the bone level was
located 3.1mm apical to the implant shoulder. Progressive bone loss (X1.8 mm)
during the observation period was found in 7.7% of the implants. Peri-implantitis
defined as bone loss X1.8mm 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 3.1mm 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.
Conclusion: After 10 years in use without systematic supportive treatment, periimplant
lesions is a common clinical entity adjacent to titanium implants.
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