{"id":371018,"date":"2017-03-15T14:40:21","date_gmt":"2017-03-15T21:40:21","guid":{"rendered":"https:\/\/cm-edgetun.pages.dev\/en-us\/research\/?post_type=msr-research-item&p=371018"},"modified":"2018-10-16T20:08:24","modified_gmt":"2018-10-17T03:08:24","slug":"push-bond-strength-dentinal-tubule-penetration-different-root-canal-sealers-used-coated-core-materials","status":"publish","type":"msr-research-item","link":"https:\/\/cm-edgetun.pages.dev\/en-us\/research\/publication\/push-bond-strength-dentinal-tubule-penetration-different-root-canal-sealers-used-coated-core-materials\/","title":{"rendered":"Push-out bond strength and dentinal tubule penetration of different root canal sealers used with coated core materials"},"content":{"rendered":"

Objectives<\/span><\/strong><\/p>\n

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.<\/p>\n

\n

Materials and Methods<\/span><\/strong>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<\/i> = 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<\/i> = 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.<\/p>\n<\/div>\n

\n

Results<\/span><\/strong>EndoRez showed significantly lower push-out bond strength than the others (p<\/i> < 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<\/i> < 0.05).<\/p>\n<\/div>\n

\n

Conclusions<\/span><\/strong>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.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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 and MethodsA total of 72 single-rooted human mandibular incisors were instrumented with NiTi rotary files with irrigation of 2.5% NaOCl. 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