Long-term Surgical Therapeutic Outcomes of Peri-Implantitis

Qualifying patients will be asked to participate in clinical measurements to compare the
long-term success of their treatments.

The aims of the current study are to 1) assess the long-term outcome of the surgical
treatment of peri-implantitis and to 2) evaluate the success of the different treatment
modalities of peri-implantitis.

Inclusion Criteria:

1. The patient is at least 18 years of age,

2. was initially diagnosed with peri-implantitis at ≥1 implant (peri-implant probing
depth (PPD) ≥ 6 mm together with bleeding and/or suppuration on probing (BOP/SoP) and
radiologically assessed marginal bone loss ≥ 3 mm),

3. had received treatment for peri-implantitis at least 5 years ago at the Graduate
Clinic of Periodontics at University of Michigan, and

4. documentation from ≥ 5 years of clinical and radiological follow-up is available from
U of M patients records.

Exclusion Criteria:

1. Has received or is currently receiving radiotherapy,

2. are currently pregnant, unsure of their pregnancy status, or are lactating (as
reported by the patient),

3. has health condition(s) or takes medication(s) that are known to affect soft tissue or
bone (e.g., Phenytoin)