A primary goal of successful endodontic therapy is the complete obturation of the root canal. The root canal sealer is an extremely important component of the root canal filling in order to achieve threedimensional obturation of the canal space.
All root canal sealers are required to possess certain physical and biological properties included biocompatibility, antimicrobial effect, strength, sealing ability, adequate working and setting times, solubility, and various other
characteristics
for
clinical use.
The physical properties fo four commercial root canal sealers - AH 26, Nogenol, Sealapex and Tubli-seal were evaluated in this study. Solubility, dimensional change, fluidity and film thickness were tested according to American Dental Association
Specification No. 57 for endodontic filling materials.
The results were as follows :
1. Dimensional change of AH 26 was higher than specification. The other tested properties were acceptable.
2. Nogenol showed 17.8mm of fluidity and 60.6μm of film thickness. Solubility and dimensional change were not able to evaluate since this material does not set. It seems that this material is not suitable for multiple canal and needs higher
skill
of
amnipulation.
3. Sealapex showed suitable fluidity and film thickness. Solubility and dimensional change were not able to evaluate since this material does not set like Nogenol.
4. Tubli-seal showed good properties except solubility.
In this study, all materials showed different physical properties. It is important that dentist have to understand all characteristics of paticular root canal sealing materials to achieve better result. Reevaluation of specification for root
canal
sealer may be recommended from the result of this study.
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