Replacement of posterior restorations

Ji-Young Kim; Kyoung-Kyu Choi; Sang-Jin Park

doi:10.5395/JKACD.2006.31.6.460

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Kim, Choi, and Park: Replacement of posterior restorations

Original Article

Journal of Korean Academy of Conservative Dentistry

Journal of Korean Academy of Conservative Dentistry 2006; 31(6): 460-469.

Published online: 30 November 2006

DOI: https://doi.org/10.5395/JKACD.2006.31.6.460

Replacement of posterior restorations

Ji-Young Kim, Kyoung-Kyu Choi, Sang-Jin Park

Department of Conservative Dentistry, Division of Dentistry, Graduate School of KyungHee University, Korea.

Corresponding Author: Sang-Jin Park. Professor of Division of Dentistry, Graduate School of KyungHee University, 1 Hoegi-Dong, Dongdaemun-Gu, Seoul, Korea. Tel: 82-2-958-9335, psangjin@khu.ac.kr

Received 17 May 2006 Revised 6 September 2006 Accepted 7 November 2006

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This article complies a survey on the replacement of the posterior restorations and accesses possible factors that influence the replacement of posterior restorations.

The data was collected from patients that visited department of conservative dentistry from Dec 1st 2003, to Sep 3rd 2004. Teeth was restricted to posterior permanent teeth. 9 dentists recorded age, gender of patients, tooth location, cavity form and restorative material. They rated marginal adaptation, anatomic form, secondary caries of old restoration by modified Ryge criteria system. The statistical analysis was performed with Chi square test (p < 0.05) for replacement ratio according to patients, tooth factor and One-way ANOVA was performed for comparison of old restoration according to restorative material.

The results were as follows;

1. The female (62%) was statistically higher ratio than the male (38%).

2. The distribution of replacement case according to age, the rate of replacement was in descending order, 20's (38.3%), 40's (16.8%), 30's (15.9%), 10's (11.1%), 50's (9.2%), 60's (8.7%).

3. The rate of replacement was 88% for molar and 12% for premolar (p < 0.05).

4. The rate of replacement was 39% for maxillar and 61% for mandible (p < 0.05).

5. The material of restorations was amalgam (69%), gold inlay (17%), composite resin (13%).

6. In rating system by modified Ryge criteria system on margin adaptation, there was statistically significant difference between amalgam and gold inlay. But on anatomic form and caries, there was no statistically significant difference among the material of restorations.

Keywords: Replacement, Posterior restorations, Age, Gender, Tooth location, Class of cavity preparation, Material of old restoration

Figures and Tables

Figure 1

The distribution of replacement related to gender.

Figure 2

The distribution of replacement related to patient's age.

Figure 3

The distribution of replacement related to tooth designation.

Figure 4

The distribution of replacement related to tooth location.

Figure 5

The distribution of replacement related to cavity preparation.

(O = occlusal cavity, BO, LO = occlusal cavity including buccal or lingual surface, MO, DO, MOD = cavity including proximal surface, CA = cervical cavity)

Figure 6

The distribution of replacement related to material of old restorations.

Figure 7

The marginal adaptation of old restorations.

Figure 8

The anatomic form of old restorations.

Figure 9

The secondary caries of old restorations.

Figure 10

The rating results of old restorations.

Table 1

Modified Ryge criteria system - Marginal adaptation

Table 2

Modified Ryge criteria system - Anatomic form, Caries

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