Abstract
OBJECTIVE:
The
aim of the present study was to assess interventions and their
consequences with regard to further bone loss at sites diagnosed with
peri-implantitis.
MATERIAL & METHODS:
In 2017,
records of 70 patients diagnosed with moderate/severe peri-implantitis
at ≥1 implant sites 4 years earlier were obtained. Changes of marginal
bone levels during the study period assessed on radiographs and
predictors of disease progression were identified by cox regression and
mixed linear modelling. Patient files were analyzed for professional
interventions related to the treatment of peri-implantitis.
RESULTS:
Mean
bone loss (±sd) at implants diagnosed with moderate/severe
peri-implantitis was 1.1 ±2.0 mm over the observation period of 3.3
years. While non-surgical measures including submucosal and/or
supra-mucosal cleaning of implants were provided to almost all patients,
surgical treatment of peri-implantitis was limited to a subgroup (17
subjects). Surgically treated implant sites demonstrated a mean bone
loss of 1.4 ±2.4 mm prior to surgical intervention, while only minor
changes (0.2 ±1.0 mm) occurred after therapy. Clinical parameters
(bleeding/suppuration on probing and probing depth) assessed at
diagnosis were statistically significant predictors of disease
progression.
CONCLUSIONS:
Non-surgical procedures were
insufficient to prevent further bone loss at implant sites affected by
moderate/severe peri-implantitis. Surgical treatment of peri-implantitis
markedly diminished the progression of bone loss. Clinical assessments
of bleeding on probing and probing depth at diagnosis predicted further
bone loss.
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