Reliability assessment of the classification for facial peri-implant soft tissue dehiscence/deficiencies (PSTDs): A multi-center inter-rater agreement study of different skill-level practitioners.

The proposed PSTD classification showed reproducible assessments among all examiners, and between examiners of the same skill-level. The response of the gold standard examiner was more in line with the assessment of the periodontists and periodontal residents.