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Effect of Different Agitation Techniques on the Penetration of Irrigant and Sealer into Dentinal Tubules

Authors
 Yu Gu  ;  Hiran Perinpanayagam  ;  David J W Kum  ;  Yeon-Jee Yoo  ;  Jin-Sun Jeong  ;  Sang-Min Lim  ;  Seok-Woo Chang  ;  Seung-Ho Baek  ;  Qiang Zhu  ;  Kee-Yeon Kum 
Citation
 PHOTOMEDICINE AND LASER SURGERY, Vol.35(2) : 71-77, 2017-02 
Journal Title
PHOTOMEDICINE AND LASER SURGERY
ISSN
 1549-5418 
Issue Date
2017-02
MeSH
Bicuspid / surgery ; Dentin / chemistry ; Dentin / drug effects* ; Epoxy Resins ; Humans ; Lasers, Solid-State / therapeutic use* ; Microscopy, Confocal / methods ; Root Canal Irrigants / pharmacology* ; Root Canal Preparation / methods ; Sensitivity and Specificity ; Sodium Hypochlorite / pharmacology
Keywords
Nd:YAP laser ; confocal laser scanning microscope ; dentinal tubule ; intracanal agitation ; penetration depth ; penetration percentage
Abstract
Objective: The aim of this study was to compare the effectiveness of five intracanal agitation techniques on the penetration of irrigant and sealer into dentinal tubules.

Background data: Intracanal agitation techniques could promote chemomechanical debridement and the sealing of root canals during endodontic treatment. However, there is limited evidence for the agitation effect of Nd:YAP laser.

Materials and methods: Human maxillary premolars with single straight canals (N = 60) were prepared with ProTaper Next® NiTi rotary files (Dentsply Maillefer) up to X4 (ISO 40 size). Rhodamine B-labeled sodium hypochlorite was used for final irrigation together with the conventional syringe (control), sonic, ultrasonic, Nd:YAP laser, or V-Clean™ endodontic agitation system. All canals were obturated with gutta-percha and fluorescein isothiocyanate-labeled AH Plus sealer. Transverse sections were obtained at 2, 5, and 8 mm from the apex and observed under confocal laser scanning microscopy. Maximum penetration depth and penetration percentage of both irrigant and sealer were recorded. Kruskal-Wallis and Mann-Whitney tests were performed for multiple comparisons. The Spearman coefficient was calculated to confirm correlations between irrigant and sealer penetration.

Results: Laser agitation attained the most irrigant and sealer penetration depth and penetration percentage (p < 0.05). Sonic and ultrasonic agitation attained significantly more penetration percentage than the control group at 2 mm from the apex (p < 0.05). Patterns of irrigant and sealer penetration correlated significantly for all agitation techniques (p < 0.001).

Conclusions: Nd:YAP laser was superior to other agitation techniques in dentinal tubule penetration of irrigant and sealer at one or more sectioned levels from the apex.
Full Text
https://www.liebertpub.com/doi/10.1089/pho.2016.4125
DOI
10.1089/pho.2016.4125
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Advanced General Dentistry (통합치의학과) > 1. Journal Papers
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/195867
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