Solubility of root-canal sealers in water and artificial saliva.

Abstract

AIM:

To compare the weight loss of eight different root-canal sealers in water and in artificial saliva with different pH values.

METHODOLOGY:

For standardized samples (n = 12 per group), ring moulds were filled with epoxy resin (AH 26, AH Plus)-, silicone (RSA RoekoSeal)-, calcium hydroxide (Apexit, Sealapex)-, zinc oxide-eugenol (Aptal-Harz)-, glass-ionomer (Ketac Endo)- and polyketone (Diaket)-based sealers. These samples were immersed in double-distilled water or artificial saliva with different pH values (7.0, 5.7 and 4.5) for 30 s, 1 min, 2 min, 5 min, 10 min, 20 min, 1 h, 2 h, 10 h, 24 h, 48 h, 72 h, 14 days and 28 days. Mean loss of weight was determined and analysed statistically using a one-way anova and Student-Newman-Keuls test for all pairwise comparisons.

RESULTS:

Most sealers were of low solubility, although Sealapex, Aptal-Harz and Ketac Endo showed a marked weight loss in all liquids. Even after 28 days of storage in water, AH 26, AH Plus, RSA RoekoSeal, and Diaket showed less than 3% weight loss. At exposure times greater than 14 days, Sealapex showed the significantly greatest weight loss of all sealers tested (P < 0.05). Aptal-Harz and Ketac Endo were significantly more soluble in saliva (pH 4.5) than in water (P < 0.05).

CONCLUSIONS:

Under the conditions of the present study, AH Plus showed the least weight loss of all sealers tested, independent of the solubility medium used. Sealapex, Aptal-Harz and Ketac Endo had a marked weight loss in all liquids.

• Authors: E Schäfer, T Zandbiglari
• Journal: International endodontic journal (Int Endod J) Vol. 36 Issue 10 Pg. 660-9 (Oct 2003) ISSN: 0143-2885 [Print] England
• PMID: 14511222 (Publication Type: Comparative Study, Journal Article)

Chemical References

• Apexit
• Aptal-Harz
• Dental Cements
• Drug Combinations
• Epoxy Resins
• Glass Ionomer Cements
• Ketac Endo
• Polyvinyls
• Root Canal Filling Materials
• Salicylates
• Saliva, Artificial
• Zinc Oxide-Eugenol Cement
• epoxy resin-based root canal sealer
• roeko seal
• Water
• Sealapex
• Silver
• epoxy resin AH-26
• bismuth phosphate, copolymers of vinyl acetate, dichlorophen, propionyl-acetophenone, triethanolamine, vinyl chloride, vinylisobutyl ether, zinc oxide drug combination
• Titanium
• Calcium Hydroxide
• Zinc Oxide
• Bismuth

Topics

• Analysis of Variance
• Bismuth (chemistry)
• Calcium Hydroxide (chemistry)
• Dental Cements (chemistry)
• Drug Combinations
• Epoxy Resins (chemistry)
• Glass Ionomer Cements (chemistry)
• Humans
• Hydrogen-Ion Concentration
• Matched-Pair Analysis
• Materials Testing
• Polyvinyls (chemistry)
• Root Canal Filling Materials (chemistry)
• Salicylates (chemistry)
• Saliva, Artificial (chemistry)
• Silver (chemistry)
• Solubility
• Time Factors
• Titanium (chemistry)
• Water (chemistry)
• Zinc Oxide (chemistry)
• Zinc Oxide-Eugenol Cement (chemistry)