TY - JOUR
T1 - Effect of the Nd:YAG laser on sealer penetration into root canal surfaces
T2 - A confocal microscope analysis
AU - Montero-Miralles, Paloma
AU - Castillo-Oyagüe, Raquel
AU - De La Fuente, Isabel Sáez
AU - Lynch, Christopher D.
AU - Castillo-Dalí, Gabriel
AU - Torres-Lagares, Daniel
PY - 2014/6
Y1 - 2014/6
N2 - Objectives The objective of this in vitro study was to evaluate the use of the Neodymium:Yttrium-Aluminium-Garnet (Nd:YAG) laser as part of the root canal treatment on the penetration of sealer into dentinal tubules. Methods Eighty extracted lower premolars were randomly assigned to two groups (n = 40 each): Control group (CG), subjected to a conventional protocol of endodontic instrumentation and obturation; and Laser group (LG), in which Nd:YAG laser irradiations were combined with conventional preparation and obturation. Endodonted samples were sectioned at 3 and 5 mm from the apex and observed under a confocal scanning microscope (CLSM). The penetration depth into the dentinal tubules and the extension of the intracanal perimeter infiltrated by sealer were measured. The Student-Newman-Keuls test was run for between-group comparisons (α =.05). Results The depth of sealer penetration into dentinal tubules did not differ among groups. LG samples showed the significantly highest percentage of penetrated perimeter at 3 mm from the root apex. Within each group, the greatest depth of penetration (P =.0001), and the major percentage of penetrated perimeter (P <.001), were recorded at 5 mm. Conclusions The application of the Nd:YAG laser after instrumentation did not improve the depth of sealer penetration into the dentinal tubules. The laser enlarged the total penetrable perimeter near the apex. Clinical significance The Nd:YAG laser may be an appropriate complement in root canal treatment, as it enhances the sealer adaptation to the dentinal walls in the proximity of the apex.
AB - Objectives The objective of this in vitro study was to evaluate the use of the Neodymium:Yttrium-Aluminium-Garnet (Nd:YAG) laser as part of the root canal treatment on the penetration of sealer into dentinal tubules. Methods Eighty extracted lower premolars were randomly assigned to two groups (n = 40 each): Control group (CG), subjected to a conventional protocol of endodontic instrumentation and obturation; and Laser group (LG), in which Nd:YAG laser irradiations were combined with conventional preparation and obturation. Endodonted samples were sectioned at 3 and 5 mm from the apex and observed under a confocal scanning microscope (CLSM). The penetration depth into the dentinal tubules and the extension of the intracanal perimeter infiltrated by sealer were measured. The Student-Newman-Keuls test was run for between-group comparisons (α =.05). Results The depth of sealer penetration into dentinal tubules did not differ among groups. LG samples showed the significantly highest percentage of penetrated perimeter at 3 mm from the root apex. Within each group, the greatest depth of penetration (P =.0001), and the major percentage of penetrated perimeter (P <.001), were recorded at 5 mm. Conclusions The application of the Nd:YAG laser after instrumentation did not improve the depth of sealer penetration into the dentinal tubules. The laser enlarged the total penetrable perimeter near the apex. Clinical significance The Nd:YAG laser may be an appropriate complement in root canal treatment, as it enhances the sealer adaptation to the dentinal walls in the proximity of the apex.
KW - Confocal microscope
KW - Dentinal permeability
KW - Endodontic instrumentation
KW - Endodontic sealer
KW - Nd:YAG laser
KW - Sealer penetration
UR - https://www.scopus.com/pages/publications/84901236729
U2 - 10.1016/j.jdent.2014.03.017
DO - 10.1016/j.jdent.2014.03.017
M3 - Article
C2 - 24721523
AN - SCOPUS:84901236729
SN - 0300-5712
VL - 42
SP - 753
EP - 759
JO - Journal of Dentistry
JF - Journal of Dentistry
IS - 6
ER -