Clinical examination The same examiner, who was blinded to the groups, performed all measurements of clinical assessment. To perform the intra-examiner calibration, 15 non-study individuals presenting dental implants were selected. The examiner measured the PD of all patients twice within 24 hours. The examiner was judged to be reproducible after fulfilling the pre-determined success criteria (the percentage of agreement within ± 1 mm between repeated measurements had to be at least 90%). The intra-class correlation was calculated as 92% reproducibility.