Influence of the keratinized mucosa on peri-implant clinical parameters: A retrospective clinical study

Edition v31n1  |  Year 2021  |  Category: Original Article  |  Page 109 to 119


Daniel Saldanha de Miranda, Isabella Neme Ribeiro Reis, Daniel Isaac Sendyk, Katia Fernanda Nery Americo, João Abílio Salles, Claudio Mendes Pannuti, Francisco Fernando Todescan


OBJECTIVE: The purpose of the present clinical retrospective study was to evaluate the influence of the peri-implant keratinized mucosa (KM) on clinical parameters: mean plaque index, bleeding on probing, mean probing depth, and exposure of implant threads. MATERIAL AND METHODS: Patients were recruited during their routine maintenance visit from 2012 to 2014 and analyzed in two groups according to KM width around implants: wide keratinized mucosa width, i.e., ≥2 mm (WKM) and narrow keratinized mucosa width, i.e., <2 mm (NKM). The following clinical parameters were assessed: modified plaque index (mPI), probing depth (PD), bleeding on probing (BoP) and presence or absence of exposed implant threads (ET). T test, Mann-Whitney, and chi-square test were used for the statistical analysis. RESULTS: Third-eight patients with 200 implants were included. 178 implants were included in the WKM group and 22 in the NKM group. NKM group showed a higher mean percentage of sites with BOP (93,8%) than WKM group (87,5%) (p<0.05). There was no statistical difference between the 2 groups with respect to mPI, PD and ET. Smoking data was available for 37 patients: 5 smokers (13.5%) and 32 non-smokers (86.5%). The mean BoP for smokers was significantly higher than non-smokers (p <0.05). No statistical difference was verified between smokers and no smokers with respect to mPI, PD and ET. CONCLUSIONS: The presence of KM ≥ 2mm around dental implants was associated with lower bleeding on probing.


Keratinized mucosa. Dental implants. Inflammation. Bleeding on probing.

How to quote

Miranda DS, Reis INR, Sendyk DI, Americo KFN, Salles JA, Pannuti CM, Todescan FF. Influence of the keratinized mucosa on peri-implant clinical parameters:A retrospective clinical study. Braz J Periodontol. 2021 Jan-Apr;31(1):109-19

To share:

Related articles: