Volume 47, Issue 4 pp. 529-539
ORIGINAL ARTICLE

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

Andrea Ravidà

Andrea Ravidà

Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA

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Islam Saleh

Islam Saleh

Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA

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Rafael Siqueira

Rafael Siqueira

Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA

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Carlos Garaicoa-Pazmiño

Carlos Garaicoa-Pazmiño

Department of Periodontology, School of Dentistry, Oregon Health & Science University, Portland, OR, USA

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Muhammad H. A. Saleh

Muhammad H. A. Saleh

Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA

Department of Periodontics, University of Louisville School of Dentistry, Louisville, KY, USA

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Alberto Monje

Alberto Monje

Department Periodontology, Universitat Internacional de Catalunya, Barcelona, Spain

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Hom-Lay Wang

Corresponding Author

Hom-Lay Wang

Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA

Correspondence

Hom-Lay Wang, Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 North University Avenue, Ann Arbor, MI, USA.

Email: [email protected]

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First published: 07 January 2020
Citations: 34

Funding information

This paper was partially supported by the University of Michigan Periodontal Graduate Student Research Fund.

Abstract

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.

CONFLICT OF INTEREST

The authors do not have any financial interests, either directly or indirectly, in the products or information listed in the paper.

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