Influence of keratinized mucosa on the surgical therapeutical outcomes of peri-implantitis

Andrea Ravidà, Islam Saleh, Rafael Siqueira, Carlos Garaicoa-Pazmiño, Muhammad H.A. Saleh, Alberto Monje, Hom Lay Wang

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Aim: To assess the impact of keratinized mucosa (KM) width around dental implants on surgical therapeutic outcomes when treating peri-implantitis. Material and Methods: Surgically treated peri-implantitis implants were divided into two groups (KM width < 2 mm and ≥2 mm). Retrospective data were obtained after implant placement (T0) and the day of peri-implantitis surgical treatment (T1). Patients were later recruited (≥1 year after T1) for clinical and radiographic examination (T2). Outcomes were analysed using generalized estimating equation (GEE) models. Results: A total of 40 patients (68 implants) (average follow-up: 52.4 ± 30.5 months) were included in this study. From T0 to T1, no differences were found between KM groups in terms of peri-implant probing depths (PPD) and bleeding on probing (BOP). However, sites with <2 mm KM exhibited significantly higher suppuration (SUP) and lower marginal bone level (MBL) (p >.01). Between T1 and T2, no major differences were noted on PPD reduction, BOP and MBL changes between the two groups. GEE modelling demonstrated that MBL severity prior to surgical therapy was a better predictor for implant survival than KM width. Conclusion: Surgical outcome in treating peri-implantitis was influenced by the severity of bone loss present at the time of treatment and not by the presence of KM at the time of treatment.

Original languageEnglish (US)
Pages (from-to)529-539
Number of pages11
JournalJournal of Clinical Periodontology
Issue number4
StatePublished - Apr 1 2020


  • dental implants
  • disease management
  • keratinized mucosa
  • peri-implantitis

ASJC Scopus subject areas

  • Periodontics


Dive into the research topics of 'Influence of keratinized mucosa on the surgical therapeutical outcomes of peri-implantitis'. Together they form a unique fingerprint.

Cite this