Author Year of publication Baseline records Clinical parameters Radiographic evaluation Peri-implantitis/implant success
Pain PD BOP SUPP/exudate Mobility Other clinical indices
Koldsland et al. [3] 2010 Different levels of severity:
> 4 mm;
≥ 6 mm. 		+ + Digital orthopantomograms and full-mouth status intraoral analogue pictures used; different levels of peri-implantitis severity: bone loss ≥ 2 mm; and ≥ 3 mm Peri-implantitis defined as detectible peri-implant bone loss with inflammation. Levels of severity:
1. bone loss ≥ 2 mm + BOP/SUPP at PD ≥ 4 or ≥ 6 mm;
2. bone loss ≥ 3 mm and BOP/SUPP at PD ≥ 4 mm or PD ≥ 6 mm.
Misch et al. [18]
International Congress of Oral Implantologists (ICOI) Pisa Consensus Conference 		2008 Bone-loss measurements should be related to the original marginal bone level at implant insertion. + +
May be of little diagnostic value; routine probing depths are not suggested in the absence of other signs or symptoms. 		+ + Conventional periapical radiographs; computer-assisted images and customized X-ray positioning devices may be superior. Success;
Satisfactory;
Compromised (peri-implantitis);
Compromised.
Success No pain No history of exudate No mobility < 2 mm
Satisfactory No pain No history of exudate No mobility 2 to 4 mm
Compromised = slight to moderate peri-implantitis May be sensitive PD > 7 May have exudate history No mobility > 4 mm, < 1/2 implant body
Failure Pain Exudate Mobility > 1/2 length of implant
Lindhe and Meyle [19]
Sixth European Workshop on Periodontology 		2008 Baseline probing measurements and radiographs should be recorded at the time of suprastructure placement. At minimum, annual monitoring of the peri-implant probing depths and the presence of BOP and SUPP must be performed. +
Probing at four surfaces is essential for diagnosis of peri-implantitis. 		+
BOP indicates the presence of inflammation in the peri-implant mucosa. 		+
Suppuration is a sign of peri-implantitis. 		+ When clinical signs suggest the presence of peri-implantitis, the clinician is advised to take a radiograph. Peri-implant mucositis: can be identified clinically by redness and swelling of the soft tissue, but bleeding on probing is currently recognized as the important feature.
Peri-implantitis: a mucosal lesion is often associated with suppuration and deepened pockets but always accompanied by loss of supporting marginal bone.
Lang and Berghlundh [20]
Seventh European Workshop on Periodontology 		2011 Time of prosthesis installation should be chosen to establish baseline radiographs and peri-implant probing. This will be the reference from which the development of peri-implant disease can be recognized and followed in subsequent examinations. + + + When changes in clinical parameters indicate disease (BOP, increased PD), the clinician is encouraged to take a radiograph to evaluate possible bone loss (PD > 5 mm + BOP, take a radiograph) Peri-implantitis: changes in the level of crestal bone, presence of bleeding on probing and/or suppuration; with or without concomitant deepening of peri-implant pockets. Puss is a common finding at peri-implantitis sites.
Froum et al. [21] 2012 Obtain a periapical radiograph immediately following placement of the definite prosthesis. + + + + Early peri-implantitis;
Moderate peri-implantitis;
Advanced peri-implantitis.
Early peri-implantitis PD ≥ 4 mm BOP +/- SUPP noted on two or more aspects of the implant < 25% of the implant length
Moderate PD ≥ 6 mm BOP +/- SUPP noted on two or more aspects of the implant 25 - 50% of the implant length
Advanced PD ≥ 8 mm BOP +/- SUPP noted on two or more aspects of the implant > 50% of the implant length
Kadkhodazadeh et al. [22] 2012 Implant success index Not reported +
PD ≤ 4 mm;
PD > 4 mm 		+ Is neither representative of a specific condition nor a predictable factor for further tissue breakdown + Long cone, parallel peri-apical technique;
≤ 2 mm (≤ 20%) - initiation of hard-tissue breakdown;
2 to 4 mm (< 40%) - hard-tissue breakdown
> 40 % - severe bone loss 		Implant success index:
I. Clinically healthy: PD ≤ 4mm; BOP –.
II. Soft-tissue inflammation PD ≤ 4 mm; BOP +.
III. Deep soft-tissue pockets PD > 4 mm; BOP +.
IV. Initiation of hard-tissue breakdown.
V. Hard-tissue breakdown plus soft-tissue recession.
VI. Notable hard-tissue breakdown.
VII. Notable hard-tissue breakdown plus soft-tissue recession.
VIII. Severe bone loss.
IX. Clinical failure - Mobility.
Sanz et al. [23]
Eight European Workshop on Periodontology 		2012 Baseline clinical and radiological data should be established once the remodelling phase post-implant placement has occurred. Long-cone parallel radiographs; in the absence of previous radiographic records, a threshold vertical distance of 2 mm from the expected marginal bone level following remodelling post-implant placement is recommended, provided peri-implant inflammation is evident. Peri-implantitis - inflammatory process around the implant that includes both soft-tissue inflammation and progressive bone loss of supporting bone beyond biological bone remodelling.
American Academy of Periodontology [24] 2013 Establish clinical and radiographic baseline at final prosthesis insertion. There is no single diagnostic tool that can, with certainty, establish a diagnosis of peri-implantitis. + + + + Bacterial culturing, inflammatory markers, and genetics may be useful in the diagnosis. Periapical radiographs should be perpendicular to the implant body.
CBCT may be considered depending on the location of progressive attachment loss. 		Used the definition by Sanz et al. [23]
Padial- Molina et al. [25] 2014 Baseline records should be used as a reference from which the development of peri-implant disease can be recognized and followed in subsequent examinations. +
Should be repeated over time but not considered an absolute and isolated diagnostic tool. 		+ + + Conventional radiographs: intraoral and panoramic are reliable; computer assisted are more accurate.
Take a radiograph if PD < 5 mm + BOP/SUPP detected. 		PD ≤ 5 mm + BOP/SUPP / + bone loss ≤ 2 mm = mucositis.
PD > 6 mm + bone loss ≥ 2 mm = peri-implantitis.
Ata-Ali et al. [26] 2015 X-rays must be obtained at implant placement and prosthesis installation to allow comparisons with the periapical X-rays obtained at periodic patient controls. Peri-implant probing is essential for establishing a diagnosis of peri-implant disease. + + Parallelized intraoral X-rays should be used in all dental implants to determine possible marginal bone loss. Stage I: BOP and/or SUPP and bone loss ≤ 3 mm beyond biological bone remodelling.
Stage II: BOP and/or SUPP and bone loss > 3 mm but < 5 mm beyond biological bone remodelling.
Stage III: BOP and/or SUPP and bone loss ≥ 5 mm beyond biological bone remodelling.
Stage IV: BOP and/or SUPP and bone loss ≥ 50% of the implant length beyond biological bone remodelling.

+ parameter suggested to be used; BOP = bleeding on probing; PD = probing-pocket depth; SUPP = suppuration.