Subcutaneous connective tissue reactions to various endodontic biomaterials: an animal study.

Abstract

BACKGROUND AND AIMS:

Biocompatibility of root-end filling materials is a matter of debate. The aim of this study was to compare the biocompatibility of a variety of commercial ProRoot WMTA cements and a resin-based cement (Geristore®) with different pH values of setting reaction and different aluminum contents, implanted into the subcutaneous connective tissue of rats at various time intervals.

MATERIALS AND METHODS:

Fifty Sprague-Dawley rats were used in this study. Polyethylene tubes were filled with Angelus WMTA, ProRoot WMTA, Bioaggregate, and Geristore. Empty control tubes were implanted into subcutaneous tissues and harvested at 7-, 14-, 28- and 60-day intervals. Tissue sections of 5 μm were stained with hematoxylin and eosin and observed under a light microscope. Inflammatory reactions were categorized as 0, none (without inflammatory cells); 1, mild (inflammatory cells ≤25); 2, moderate (25-125 inflammatory cells); and 3, severe (>125 inflammatory cells). Statistical analysis was performed with Kruskal-Wallis and Mann Whitney U tests.

RESULTS:

ProRoot WMTA and Angelus elicited significantly less inflammation than other materials (P<0.05). After 7 days, however, all the materials induced significantly more inflammation than the controls (P<0.05). Angelus-MTA group exhi-bited no significant differences from the Bioaggregate group (P=0.15); however, ProRoot WMTA elicited significantly less inflammation than Bioaggregate (P=0.02). Geristore induced significantly more inflammation than other groups (P<0.05).

CONCLUSION:

Geristore induced an inflammatory response higher than ProRoot WMTA; therefore, it is not recommended for clinical use.

• Authors: Mohammad Ali Saghiri, Nader Tanideh, Franklin Garcia-Godoy, Mehrdad Lotfi, Kasra Karamifar, Dariush Amanat
• Journal: Journal of dental research, dental clinics, dental prospects (J Dent Res Dent Clin Dent Prospects) Vol. 7 Issue 1 Pg. 15-21 ( 2013) ISSN: 2008-210X [Print] Iran
• PMID: 23486841 (Publication Type: Journal Article)