Effect of calcium hydroxide dressing on the long-term sealing ability of two different endodontic sealers: an in vitro study.
OBJECTIVE
The aim of this in vitro study was to evaluate the long-term sealing ability of Real Seal system and Endofill after calcium hydroxide (CH) dressing, by using a fluid filtration model.


METHODS
Four randomized groups of single-rooted teeth (N=110) were prepared using a crown-down technique to a size 50 file. Two groups (1 and 2) received CH dressing before filling. Roots were filled with gutta-percha and Endofill (groups 2 and 4) or Resilon and Real Seal (groups 1 and 3). Leakage was measured by using the fluid filtration method after 90 days and determined as microL/min.10 psi.


RESULTS
Statistical analysis by Kruskal-Wallis and Mann-Whitney tests indicated that CH dressing groups showed higher leakage values than those where CH was not used (P=.001).


CONCLUSIONS
It may be concluded that the use of CH as an intracanal dressing material affected the sealing ability of both Real Seal and Endofill sealers.
Böttcher
Daiana Elisabeth
DE
Department of Conservative Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil. daibottcher@hotmail.com
Hirai
Vinicio Hidemitsu Goto
VH
Da Silva Neto
Ulisses Xavier
UX
Grecca
Fabiana Soares
FS
D002126:Calcium Hydroxide / Q000737:chemistry* / Q000627:therapeutic use; D003188:Composite Resins / Q000737:chemistry* / Q000627:therapeutic use; D003763:Dental Leakage / Q000517:prevention & control*; D018772:Dental Marginal Adaptation; D004347:Drug Interactions; D006801:Humans; D011897:Random Allocation; D012387:Root Canal Filling Materials / Q000737:chemistry* / Q000627:therapeutic use; D012388:Root Canal Irrigants / Q000737:chemistry* / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000379:methods; D018709:Statistics, Nonparametric; D013997:Time Factors
D003188:Composite Resins; C511498:Real Seal composite resin; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C074417:Endo-Fill; D002126:Calcium Hydroxide