Factors influencing outcomes of surgical therapy of peri‐implantitis: A secondary analysis of 1‐year results from a randomized clinical study

Author:

Ichioka Yuki1ORCID,Trullenque‐Eriksson Anna1ORCID,Ortiz‐Vigón Alberto23ORCID,Guerrero Adrián4ORCID,Donati Mauro1,Bressan Eriberto5,Ghensi Paolo6,Schaller Dennis7,Tomasi Cristiano1ORCID,Karlsson Karolina18ORCID,Abrahamsson Ingemar18,Dionigi Carlotta1ORCID,Regidor Erik2ORCID,Berglundh Tord18ORCID,Derks Jan18ORCID

Affiliation:

1. Department of Periodontology, Institute of Odontology The Sahlgrenska Academy at University of Gothenburg Gothenburg Sweden

2. Clínica Ortiz‐Vigón, PerioCentrum Bilbao Spain

3. ETEP Research Group, Faculty of Odontology University Complutense of Madrid Madrid Spain

4. Private Practice, Clinica Guerrero Marbella Spain

5. Department of Neuroscience, Faculty of Odontology University of Padua Padua Italy

6. Department CIBIO University of Trento Trento Italy

7. Private Practice Planegg Germany

8. Clinic of Periodontics Public Dental Service, Region Västra Götaland Gothenburg Sweden

Abstract

AbstractAimTo identify predictors of treatment outcomes following surgical therapy of peri‐implantitis.Materials and MethodsWe performed a secondary analysis of data from a randomized controlled trial (RCT) comparing access flap with or without bone replacement graft. Outcomes at 12 months were probing pocket depth (PPD), bleeding on probing (BOP), soft‐tissue recession (REC) and marginal bone level (MBL) change. Multilevel regression analyses were used to identify predictors. We also built an explanatory model for residual signs of inflammation.ResultsBaseline PPD was the most relevant predictor, showing positive associations with final PPD, REC and MBL gain, and negative association with probability of pocket closure. Smokers presented higher residual PPD. Absence of keratinized mucosa at baseline increased the probability of BOP but was otherwise not indicative of outcomes. Plaque at 6 weeks was detrimental in terms of residual PPD and BOP. Treatment allocation had an effect on REC. Final BOP was explained by residual PPD ≥6 mm and plaque at more than two sites.ConclusionsBaseline PPD was the most relevant predictor of the outcomes of surgical therapy of peri‐implantitis. Pocket closure should be a primary goal of treatment. Bone replacement grafts may be indicated in aesthetically demanding cases to reduce soft‐tissue recession. The importance of smoking cessation and patient‐performed plaque control is also underlined.

Funder

Osteology Foundation

Publisher

Wiley

Subject

Periodontics

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