Push-out bond strength and dentinal tubule penetration of different root canal sealers used with coated core materials
Restorative Dentistry & Endodontics
;
: 114-120, 2016.
Article
in English
| WPRIM
| ID: wpr-205726
ABSTRACT
OBJECTIVES:
The aim of this study was to compare the push-out bond strength and dentinal tubule penetration of root canal sealers used with coated core materials and conventional gutta-percha. MATERIALS ANDMETHODS:
A total of 72 single-rooted human mandibular incisors were instrumented with NiTi rotary files with irrigation of 2.5% NaOCl. The smear layer was removed with 17% ethylenediaminetetraacetic acid (EDTA). Specimens were assigned into four groups according to the obturation system Group 1, EndoRez (Ultradent Product Inc.); Group 2, Activ GP (Brasseler); Group 3, SmartSeal (DFRP Ltd. Villa Farm); Group 4, AH 26 (Dentsply de Trey)/gutta-percha (GP). For push-out bond strength measurement, two horizontal slices were obtained from each specimen (n = 20). To compare dentinal tubule penetration, remaining 32 roots assigned to 4 groups as above were obturated with 0.1% Rhodamine B labeled sealers. One horizontal slice was obtained from the middle third of each specimen (n = 8) and scanned under confocal laser scanning electron microscope. Tubule penetration area, depth, and percentage were measured. Kruskall-Wallis test was used for statistical analysis.RESULTS:
EndoRez showed significantly lower push-out bond strength than the others (p < 0.05). No significant difference was found amongst the groups in terms of percentage of sealer penetration. SmartSeal showed the least penetration than the others (p < 0.05).CONCLUSIONS:
The bond strength and sealer penetration of resin-and glass ionomer-based sealers used with coated core was not superior to resin-based sealer used with conventional GP. Dentinal tubule penetration has limited effect on bond strength. The use of conventional GP with sealer seems to be sufficient in terms of push-out bond strength.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Rhodamines
/
Smear Layer
/
Edetic Acid
/
Dental Pulp Cavity
/
Dentin
/
Glass
/
Gutta-Percha
/
Incisor
Limits:
Humans
Language:
English
Journal:
Restorative Dentistry & Endodontics
Year:
2016
Type:
Article
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