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Effect of photon induced photoacoustic streaming (PIPS) on bond strength to dentine of two root canal filling materials
Author(s) -
Miletić Ivana,
Chieffi Nicoletta,
Rengo Carlo,
Ferrari Marco,
Nathanson Dan,
Baraba Anja
Publication year - 2016
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.22536
Subject(s) - bond strength , root canal , dentistry , gutta percha , universal testing machine , dentin , photoacoustic imaging in biomedicine , root caries , materials science , chemistry , composite material , ultimate tensile strength , medicine , optics , layer (electronics) , adhesive , physics
Objectives The aim of this study was to evaluate the effect of photon induced photoacoustic streaming (PIPS) technique in combination with EDTA on bond strength of gutta‐percha/AH Plus and Resilon/RealSeal SE root canal fillings to root dentine. Materials and Methods Forty freshly extracted human maxillary anterior teeth with intact straight roots, were instrumented endodontically with rotating ProTaper instruments and randomly divided into two experimental groups. In group 1 ( n = 20), root canals were rinsed for 1 minute with 2 ml of 17% EDTA. In group 2 ( n = 20), Er:YAG laser, with a 14 mm long 400 μ diameter tapered PIPS tip, was used for 1 minute with 2 ml of 17% EDTA. The laser parameters used were: 20 mJ per pulse, 15 Hz, 50 microsecond. In each experimental group, half of the root canals ( n = 10) were obturated with gutta‐percha/AH Plus and other half ( n = 10) with Resilon/RealSeal SE. A micropush‐out test was performed on sectiond specimens of the filled roots using a universal testing machine and resistance to failure plus failure modes were determined. Results Both gutta‐percha/AH Plus groups had higher bond strength to root dentin than the Resilon/RealSeal SE groups ( P < 0.05). The smear layer removal protocol, with EDTA only or combining PIPS technique with EDTA, had no influence on bond strength of either gutta‐percha/AH Plus, or Resilon/RealSeal SE ( P > 0.05). Conclusion Within the limitations of this study, it was found that the application of the PIPS technique did not have an affect on the push‐out bond strength of Resilon/RealSeal SE root canal filling to dentin nor on the gutta‐percha/AH Plus. A significant difference in bond strength was noted between the two root canal filling materials. Lasers Surg. Med. 48:951–954, 2016. © 2016 Wiley Periodicals, Inc.