Resumen de Removable Prostheses May Enhance Marginal Bone Loss Around Dental Implants: A Long-Term Retrospective Analysis

Pini Reisman, Lior Shapira, Moshik Tandlich, Jakob Ekstein

• Removable Prostheses May Enhance Marginal Bone Loss Around Dental Implants: A Long-Term Retrospective Analysis Moshik Tandlich,* Jakob Ekstein,* Pini Reisman,† and Lior Shapira* *Department of Periodontology, Hadassah Medical Center, Jerusalem, Israel.

  †Private practice, Hurdegaryp, The Netherlands.

  Correspondence: Dr. Lior Shapira, Department of Periodontology, Faculty of Dental Medicine, Hadassah Medical Center, P.O. Box 12272, Jerusalem, Israel. Fax: 972-2-6438705; e-mail: shapiral@cc.huji.ac.il.

  Background: The aim of the study was to retrospectively evaluate marginal bone loss (MBL) around rough-surface dental implants, placed in a private clinic, and to construct a multivariate model based on formerly proposed prognostic variables.

  Methods: Records of patients who were treated previously with dental implants were reviewed. The patients’ latest annual clinical examinations and radiograms were used for data collection and the calculation of MBL. A patient-based multivariate model was constructed based on two successive iterations of statistical analysis.

  Results: Eighty-two patients and 265 implants with ≥30 months of follow-up were evaluated. The overall survival rate was 95.8% (2.6% early loss and 1.5% late loss). By evaluating the data with the single implant as a unit of analysis, MBL was correlated with time. Higher MBL values were found in smokers and around implants supporting removable prostheses. In the patient-based analysis, only smoking and the presence of a removable prosthesis correlated with higher values of MBL. Odds ratios for higher rates of MBL were 1.95 and 2.57 for smokers and around removable prostheses, respectively. Neither time nor any of the other suspected variables correlated with higher MBL.

  Conclusions: The present study corroborated the notion that smoking correlates with higher MBL and implied that implants supporting removable prostheses tend to display more bone loss. Further studies are needed to elucidate the latter finding.

  KEYWORDS: Alveolar bone loss, dental implant, multivariate analysis, partial denture, retrospective study Cited by Won-suk Oh, Tae-Ju Oh and Ju-mi Park. (2014) Impact of implant support on mandibular free-end base removable partial denture: theoretical study. Clinical Oral Implants Research, n/a-n/a.

  Online publication date: 1-Dec-2014.

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