Submitted: 08 May 2007
Accepted: 25 Feb 2013
ePublished: 25 Feb 2013
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J Iran Dent Assoc. 2005;17(5): 52-60.
  Abstract View: 21

Research

An evaluation on the relationship between fixed prosthesis (crown) and periodontal health

Amir Moeintaghavi*, Abbas Fallah tafti, Mohammad reza Talebi ardekani, Ahmad Haerian ardekani, Gholam hossein Ansari
*Corresponding Author: Email: am-taghavi@mums.ac.ir

Abstract

An evaluation on the relationship between fixed prosthesis (crown) and periodontal health

 Dr. A. Moeintaghavi* - Dr. A. Fallah** - Dr. M.R. Talebi ardekani*** - Dr. A. Haerian ardekani**** - Dr. G.H. Ansari*****

* - Assistant Professor and Chief of Periodontics Dept. - Faculty of Dentistry – Mashhad University of Medical Sciences.

**- Assistant Professor of Prosthodontics Dept. - Faculty of Dentistry – Yazd University of Medical Sciences.

 *** - Assistant Professor of Periodontics Dept. - Faculty of Dentistry – Yazd University of Medical Sciences.

 **** - Associate Professor of Periodontics Dept. - Faculty of Dentistry – Yazd University of Medical Sciences.

***** - Dentist.

Background and Aim: The relationship between periodontal health and teeth restoration is in-evitable. For long – term survival of restorations periodontium must remain healthy and on the other hand for a healthy periodontium a lot of issues must be critically observed in restora-tions. The aim of this study was to evaluate the effects of crowns, made in Yazd dental faculty, on periodontal tissues.

Materials and Methods: In this analytic cross – sectional study, 30 crowns were randomly se-lected. Modified gingival index (MGI), probing index (PI), probing depth (PD), and kerati-nized gingival crowns in cases were compared with the same indices of the normal contra lat-eral teeth (controls). Moreover, crown's features such as marginal position, marginal fitness and proximal contacts of crowns were evaluated. Wilcoxon signed rank test and Paired sample t – test were used for statistical analysis.

Results: MGI and PD were significantly more around crowns than normal contra lateral teeth but PI and KG were less around crowns, however the differences in keratinized gingival (KG) were not significant. In crowns with subgingival margin MGI, PI and KG were more than crowns with supragingival or gingival margins. Crowns with marginal overhang showed more MGI, PI, PD and KG, as compared with the normal ones. In crowns with normal proximal contacts PD, OI, MGI and KG were less than those with open contacts. In this study, just one case with tight proximal contacts was observed.

Conclusion: Crowns significantly affect on the gingival inflammatory reaction of the restored teeth.

Key words: Crown – Periodontium – Gingival index – Plaque index – Probing depth.

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