Effect of surface pretreatment on the sealing ability of resin-based barriers: a microleakage study

Document Type

Article

Publication Date

7-1-2026

Publication Title

SVOA Dentistry

Abstract

Introduction: Resin-based barriers are used during root canal therapy to prevent salivary contamination of the pulp chamber, thereby minimizing bacterial ingress. Previous studies have reported variable sealing abilities among different resin-based barriers, with J-Temp showing the highest leakage and Liquid Dam the lowest. The purpose of this study was to investigate whether different dentin surface pretreatments influence the sealing ability of J-Temp and Liquid Dam. Methods: Seventy-two extracted maxillary and mandibular molars received a 4 x 4 mm preparation on the buccal surface and were divided into six groups (n = 12) according to the barrier (J-Temp or Liquid Dam) and pretreatment: no treatment (NT), alcohol scrub (ALC), or dentin bonding agent (DBA). Specimens were submerged in 2% methylene blue for 24 hours while being agitated. After barrier removal, dye penetration was photographed using a Zumax microscope and analyzed on ImageJ. Two-way ANOVA with post hoc Tukey tests and independent-samples t-tests were used (α = 0.05) for statistical analysis. Results: For Liquid Dam, significant differences were found among pretreatments. DBA pretreatment produced significantly less leakage than NT or ALC, while NT and ALC were not significantly different. For J-Temp, no significant differences were found between the three pretreatments. Comparing the two materials, J-Temp exhibited less leakage than Liquid Dam under NT conditions, whereas Liquid Dam showed less leakage than J-Temp when a bonding agent was used. Conclusions: Dentin bonding pretreatment significantly improves the sealing ability of Liquid Dam but has no effect on J-Temp. Surface pretreatment may mitigate inherent differences between barrier materials, potentially reducing salivary contamination risk during endodontic treatment.

First Page

206

Last Page

213

Volume

7

Issue

4

Publisher

ScienceVolks (SVOA)

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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