Effect of photon-initiated photoacoustic streaming, passive ultrasonic, and sonic irrigation techniques on dentinal tubule penetration of irrigation solution: a confocal microscopic study

Objectives The aim of this in vitro study was to evaluate the efficacy of different irrigation techniques including laser-activated irrigation using an erbium:yttrium-aluminum-garnet (Er:YAG) laser with a novel tip design (photon-induced photoacoustic streaming (PIPS)), Er:YAG laser with Preciso tip...

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Bibliographic Details
Published in:Clinical oral investigations 2017-09, Vol.21 (7), p.2205-2212
Main Authors: Akcay, Merve, Arslan, Hakan, Mese, Merve, Durmus, Nazlı, Capar, Ismail Davut
Format: Article
Language:English
Subjects:
Aluminum
Bicuspid
Data processing
Dentin - drug effects
Dentistry
Endodontics
Fluorescent indicators
Humans
In Vitro Techniques
Lasers
Lasers, Solid-State
Lavage
Mandible
Medicine
Microscopy, Confocal
Original Article
Photons
Premolars
Random Allocation
Root Canal Irrigants - pharmacokinetics
Root canals
Statistical analysis
Therapeutic Irrigation - instrumentation
Therapeutic Irrigation - methods
Tubules
Ultrasonics - instrumentation
Variance analysis
Yttrium
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Summary:Objectives The aim of this in vitro study was to evaluate the efficacy of different irrigation techniques including laser-activated irrigation using an erbium:yttrium-aluminum-garnet (Er:YAG) laser with a novel tip design (photon-induced photoacoustic streaming (PIPS)), Er:YAG laser with Preciso tip, sonic activation, and passive ultrasonic activation on the final irrigation solution penetration into dentinal tubules by using a laser scanning confocal microscope. Material and methods In this study, 65 extracted single-rooted human mandibular premolars were instrumented up to size 40 and randomly divided into 5 groups ( n  = 13) based on the activation technique of the final irrigation solution as follows: conventional irrigation (control group), sonic activation, passive ultrasonic activation, Er:YAG-PIPS tip activation, and Er:YAG-Preciso tip activation. In each group, 5 mL of 5% NaOCl labeled with fluorescent dye was used during the activation as the final irrigation solution. Specimens were sectioned at 2.5 and 8 mm from the apex and then examined under a confocal microscope to calculate the dentinal tubule penetration area. Data were analyzed using two-way analysis of variance (ANOVA) and Tukey’s post hoc tests ( P  = 0.05). Results Both Er:YAG laser (Preciso/PIPS) activations exhibited a significantly higher penetration area than the other groups ( P   middle > apical) ( P  
ISSN:1432-6981
1436-3771
DOI:10.1007/s00784-016-2013-y