Effects of Nd:YAG laser on apical seal of teeth after apicoectomy and retrofill

Stabholz, Adam; Khayat, Akbar; Ravanshad, Shohreh; McCarthy, Delwin W.; Neev, Joseph; Torabinejad, Mahmoud

doi:10.1016/s0099-2399(06)81221-5

Cited by 75 publications

(40 citation statements)

References 18 publications

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“…It can be used with antibacterial purpose, preparation of the root canal, debris removal, 5,9,11,12 vaporization of soft tissues, 9,13 melting of hard tissues surface, 11 and reduction of dentin permeability. 1,2,4,5,11,14,15 It is verified that after Nd:YAG laser application on the dentin, melting, recrystallization and glazing occur, with consequent reduction of the fluids permeability. 1,15, 16 Folwaczny et al, 17 in 2002, suggested that use of the laser in the root canal walls leads to a reduction in the number of opened tubules, promoting a decrease of apical permeability, and this reduction in the permeability of the dentin walls can improve the sealing of root canal filling.…”

Section: Discussionmentioning

confidence: 94%

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Effects of Nd:YAG Laser Irradiation on Root Canal Dentin Wall: A Scanning Electron Microscopic Study

Camargo

Valera

Camargo

et al. 2005

Photomedicine and Laser Surgery

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Objective: The purpose of this study was to evaluate, by scanning electron microscopy (SEM), the effects of Nd:YAG laser irradiation applied perpendicular or parallel to the root canal dentin wall. Methods: Thirty human teeth were divided into two groups: Group A (20 roots), laser application with circular movements, parallel to the dentin root surface; and Group B (10 roots), roots cut longitudinally and laser applied perpendicular to the root surface. Group A was subdivided into A1 (10 roots), laser application with 100 mJ, 15 Hz and 1.5 W; and A2 (10 roots) with 160 mJ, 15 Hz, and 2.4 W. Group B was subdivided into B1 (10 hemisections) and B2 (10 hemi-sections) with parameters similar to A1 and A2. Four applications of 7-sec duration were performed, with a total exposure of 28 sec. SEM evaluations were made in the cervical, middle, and apical thirds, with 500؋ and 2000؋ magnifications. Morphological changes scores were attributed, and the results were submitted to Kruskal Wallis statistical test (5%). Results: Significant statistical differences were found between groups A and B (p = 0.001). In groups A1 and A2, few areas of dentin melting were observed. In groups B1 and B2, areas of melting dentin covering dentin surface were observed. Conclusions: It was concluded that intracanal laser application with circular movements (parallel to the surface) produces limited morphological changes in root canal dentin wall.

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Section: Discussionmentioning

confidence: 94%

“…[1][2][3][4] These alterations can change dentin permeability, decreasing fluids penetration inside dentin tubules. [5][6][7] However, studies that evaluate laser irradiation on dentin show great variability in dentin morphological changes because varying parameters are used.…”

Section: Introduction Lmentioning

confidence: 99%

Effects of Nd:YAG Laser Irradiation on Root Canal Dentin Wall: A Scanning Electron Microscopic Study

Camargo

Valera

Camargo

et al. 2005

Photomedicine and Laser Surgery

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“…[24][25][26] Lage-Marques et al (1995) [3] related that laser is characterized by presenting a wavelength that propagates in the space and time, maintaining the capacity of concentrating in a tiny point great quantity of energy. In clinical practice, lasers with high density of power more frequently used for hard tissues are Nd: YAG, Argonium and Er: YAG.…”

Section: Discussionmentioning

confidence: 99%

“…Probably, the alterations suffered by the dentine irradiated by Nd: YAG laser made it smoother, reducing the sealing potential of the retrofiling material. Stabholz et al (1992) [26] reported that the application of laser causes fusion of apical dentine, new solidification and recrystallization of melted areas in an incomplete and discontinuous way. This incomplete and discontinuous recristallization may favor marginal leakage and may be improved by the method of laser application inside the root-end cavity, moving in a spiral course, aiming that the optical fiber, and consequently the laser light, touches as perpendicular as possible the cavity walls.…”

Section: Discussionmentioning

confidence: 99%

Neodymium-doped yttrium aluminum garnet laser × self-etching primer: Association with mineral trioxide aggregate as retrograde root filling

Yui¹,

Miranda²,

Araujo³

et al. 2015

JCRI

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Objective: The purpose of this study was to assess the effects of laser irradiation and self-etching primer on the microleakage of apicoectomized teeth retro filled with mineral trioxide aggregate (MTA). Materials and Methods: A total of 60 bovine teeth were endodontically treated and had the apical 3 mm resected. Root-end cavities were prepared and the specimens were divided into five groups: Group 1 -control group, teeth only retrofiled with MTA; Group 2 -specimens treated with neodymium-doped yttrium aluminum garnet (Nd: YAG) laser on the inner walls of the root-end cavities; Group 3 -specimens treated as Group 2 added with Nd: YAG laser on the surface of the apical resection; Group 4 -teeth treated with self-etching primer on the inner walls of the root-end cavities, and Group 5 -teeth treated as Group 4 and in addition, treated with self-etching primer on the surface of the apical resection. All the specimens were retrofiled with MTA and sealed with varnish. The teeth were immersed in 2% rhodamine B dye for 24 h. After this period, roots were washed, dried and resected. Marginal microleakage at material/root surface interface was evaluated quantitatively through linear measure in mm with the aid of a steromicroscope and calculated by an image program. Results:The mean values obtained were: Group 1 -2.76 ± 0.60; Group 2 -2.30 ± 0.84; Group 3 -2.21 ± 0.85; Group 4 -1.04 ± 0.76, and Group 5 -0.84 ± 0.40. ANOVA showed a significant difference among the groups (P < 0.05) and Tukey's test revealed that Group 1, Group 2 and Group 3 were different from Group 4 and Group 5. Conclusion: It was concluded that groups that used self-etching primer presented significantly lower degrees of marginal microleakage. Teeth treated with Nd: YAG laser presented same results as control group. The area of application did not reduce marginal leakage (for both laser and self-etching primer). Only MTA as a retro filling material was not sufficient to prevent marginal microleakage.

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“…STABHOLZ et al 63 , em 1992, tiveram como objetivo investigar o efeito do laser Nd:YAG na permeabilidade dentinária após apicetomia e retroobturação com amálgama. As superfícies dentinárias apicetomizadas e algumas cavidades retrógradas foram irradiadas pelo laser Nd:YAG em dois diferentes estágios: no primeiro, utilizando-se 3W de potência e 150mj/pulso de energia sem irrigação, e no segundo, 1,9W de potência e 95mj/pulso de energia com irrigação, ambos com 20Hz de freqüência.…”

Section: Revisão De Literatura 18unclassified

Infiltração apical em obturações de canais realizadas com dois tipos de cimento após aplicação do laser ND:YAG ou solução de EDTA nas paredes do canal radicular

Bassili¹

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Effects of Nd:YAG laser on apical seal of teeth after apicoectomy and retrofill

Cited by 75 publications

References 18 publications

Effects of Nd:YAG Laser Irradiation on Root Canal Dentin Wall: A Scanning Electron Microscopic Study

Effects of Nd:YAG Laser Irradiation on Root Canal Dentin Wall: A Scanning Electron Microscopic Study

Neodymium-doped yttrium aluminum garnet laser × self-etching primer: Association with mineral trioxide aggregate as retrograde root filling

Infiltração apical em obturações de canais realizadas com dois tipos de cimento após aplicação do laser ND:YAG ou solução de EDTA nas paredes do canal radicular

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