Abstract
Introduction
Experimental studies show that dental pulp cells respond unfavorably to contact with
resin composite restorative material. Hypothetically, in a random population, the
frequency of apical periodontitis should be higher for teeth restored with resin composite
than with amalgam. Therefore, the aim was to compare the periapical status of non–root-filled
teeth restored with resin composite, amalgam, or laboratory-fabricated crowns in an
adult Swedish population.
Methods
The subjects comprised 440 individuals from a randomly selected sample of 1,000 adult
residents of a Swedish county. The type, material, and quality of the restorations
were recorded for all non–root-filled teeth by clinical examination and intraoral
clinical photographs. Periapical status was evaluated on panoramic radiographs. The
association between periapical status and type, material, and quality of the restorations
was analyzed using the chi-square test and logistic regression analysis.
Results
There was no significant difference in the frequency of apical periodontitis (AP)
between teeth restored with resin composite or amalgam (1.3% and 1.1%, respectively).
The frequency of AP for teeth restored with laboratory-fabricated crowns was significantly
higher (6.3%). Regression analysis showed no association between AP and resin composite
restorations but a significant association with laboratory-fabricated crowns.
Conclusions
The results indicate that the risk of damage to the pulp-dentin complex from exposure
to resin composite material and dentin bonding agents shown in experimental studies
is not reflected in the clinical setting. However, in the study sample, AP was diagnosed
in a significantly higher proportion of teeth restored with laboratory-fabricated
crowns.
Key Words
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Article info
Publication history
Published online: July 16, 2014
Identification
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© 2014 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.
