Influence of passive ultrasonic tip activation at different levels on the depth of sealer penetration: An in vitro study

Saudi Endodontic Journal

article

Nurul Ain Ramlan¹  Dalia Abdullah²  Timm Joyce Tiong³  Diego Spreafico⁴  Shalini Kanagasingam¹ 

[1] Department of Comprehensive Care Dentistry, Universiti Teknologi MARA;Centre for Restorative Dentistry, Faculty of Dentistry, Universiti Kebangsaan Malaysia;Department of Chemical and Environmental Engineering, University of Nottingham Malaysia Campus;Private Practitioner, University of Milan

关键词: Depth of penetration;    epoxy resin sealers;    obturation;    sonic;    ultrasonic;   

DOI  :  10.4103/sej.sej_109_19

学科分类：口腔科学

来源: Medknow

【 摘 要 】

Introduction: The aim of this study was to compare the effect between different levels of ultrasonic tip activation on the depth of epoxy resin-based sealer (AH plus) dentinal tubules penetration. Materials and Methods: Extracted single-rooted premolars (n = 60) were randomly allocated into three groups and instrumented following the same protocol. Group 1 (control), the sealer was mixed with 0.1% Rhodamine B dye and placed using size 20 K-file. In Group 2, the sealer was passively activated using ultrasonic tip (ISO 25) 10 s mesiodistally and buccolingually at 2 mm from the apex. In Group 3, the sealer was activated in a similar manner at 4 mm from the apex. Samples were sectioned horizontally at 2 mm, 4 mm, and 6 mm from the apex and analyzed using a stereomicroscope for tubular dentine sealer penetration. The cross-sectional area (μm2) was measured with software to get the percentage of sealer penetration, and presences of voids were recorded. Results: Significant lesser percentage of sealer penetration into the dentinal tubules was observed between the control group and both the experimental groups (P = 0.00) at 2 mm, 4 mm, and 6 mm from the apex. There was no significant difference in the percentage of sealer penetration into the dentinal tubules between both the experimental groups (P 0.05). The presence of voids between all groups was not statistically significant (P 0.05). Conclusion: Passive ultrasonic activation of sealer placement resulted in deeper sealer penetration into the dentinal tubules even at a higher level of tip activation (4 mm).

【 授权许可】

CC BY-NC-SA