In vitro study of the variable square pulse Er:YAG laser cutting efficacy for apicectomy

Grgurević, Joško; Grgurević, Lovro; Miletić, Ivana; Karlović, Zoran; Krmek, Silvana Jukić; Anić, Ivica

doi:10.1002/lsm.20168

Cited by 24 publications

(16 citation statements)

References 16 publications

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“…11,12 Er:YAG offers advantages, such as the absence of discomfort and vibration, contributing to minimize the contamination of the surgical area and reducing the adjacent tissue trauma. 13,14 Its clinical application has been related to the execution of root resection, justifying its use in this study, in which the results obtained could be applied to clinical practice.…”

Section: Discussionmentioning

confidence: 99%

Apical Sealing Quality ofIn VitroApicectomy Procedures After Using Both Er:YAG and Nd:YAG

Leonardi

Sivieri-Araújo²,

Zielak³

et al. 2010

Photomedicine and Laser Surgery

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The aim of this study was to evaluate the apical sealing of dentinal tubules after root-end surface cutting by using Er:YAG and Nd:YAG lasers. After root-canal instrumentation and filling, apices of 50 extracted maxillary canine human teeth were resected by Er:YAG with 400 mJ, 10 Hz, for 30 sec. The samples were randomly assigned to five groups (n ¼ 10): (GI) treated without root-end cavity, but with Nd:YAG (1.0 W, 10 Hz, 20 sec) for dentinal tubules sealing; (GII) treated with root-end cavity without the use of Nd:YAG; (GIII) treated with rootend cavity and Nd:YAG application; (GIV) treated with root-end cavity made by Er:YAG with no focus and without Nd:YAG application; and (GV) treated without root-end cavity and without Nd:YAG application. The root-end cavities were performed by using Er:YAG at 300 mJ, 10 Hz, for 20 sec. Subsequently, all teeth were waterproofed and immersed in 2% methylene blue for 48 h in a vacuum environment. The samples were longitudinally sectioned, and microleakage was measured. ANOVA and the Fisher LSD test showed that GIV was less susceptible to microleakage than were the other groups ( p < 0.05). Interestingly, the use of the Er:YAG with no focus showed superior dentinal tubule sealing in comparison with the other groups, even with or without root-end cavity and Nd:YAG application.

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Section: Discussionmentioning

confidence: 99%

Apical Sealing Quality ofIn VitroApicectomy Procedures After Using Both Er:YAG and Nd:YAG

Leonardi

Sivieri-Araújo²,

Zielak³

et al. 2010

Photomedicine and Laser Surgery

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“…A shorter pulse builds up the energy faster and therefore less energy is transformed into heat, which results in a more efficient ablation and less thermal damage inflicted into the tissue [30,31].…”

Section: Introductionmentioning

confidence: 99%

Impact of Er:YAG laser pulse duration on ultra-structure of dentin collagen fibrils

et al. 2018

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Purpose To evaluate the ultra-morphology of the dentin after irradiation with Er:YAG laser using shorter pulse durations in different protocols by transmission electron microscopy (TEM). The Er:YAG laser is an effective alternative method for hard dental tissue treatment with great acceptability among patients. However, undesirable effects may occur in dental substrate if the correct parameters are not chosen during irradiation protocols, jeopardizing bonding that could result in premature failures. But, before doing bonding tests, it is fundamental the knowledge of the laser action into dentin. It is well known that shorter pulses have less thermal damage due to less heat loss during irradiation; hence, it is primordial to evaluate the performance of shorter pulses in irradiation protocols. Methods Eighteen dentin disks with 2 mm thick were assigned into six experimental groups according to the irradiation protocol: cavity preparation (200 mJ and 20 Hz) and pretreatment (80 mJ and 2 Hz) varying the pulse duration (50, 300, or 600 μs), in focused distance and under refrigeration. Qualitative and semi-quantitative analyses were performed. Results The pretreatment with 50 μs was the protocol that maintained intact both architecture of collagens fibrils and an organized extracellular matrix. Nevertheless, the other groups showed a melted and carbonized dentin surface followed by fused zone of collagen fibrils with loss of interfibrillar spaces. Conclusions It was concluded that the thickness of the altered layer is directly proportional to the enhance of pulse duration for cavity preparation protocols tested. Moreover, pretreatment with 50 μs is an adequate protocol for dentin, which did not alter its ultra-morphology.

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“…[44][45][46] A case of surgical resection of a root apex associated with peri-apical pathol ogy, using the Er:YAG laser has been demonstrated, with evidence of good post-operative healing. 47,48 …”

Section: Resultsmentioning

confidence: 99%

The use of the erbium yttrium aluminium garnet (2,940 nm) in a laser-assisted apicectomy procedure

Reyhanian¹,

Parker

Moshonov

2008

Br Dent J

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In vitro study of the variable square pulse Er:YAG laser cutting efficacy for apicectomy

Abstract: VSP Er:YAG laser used for apicectomy is slower by a factor of 7-31 than mechanical handpiece, but treatment outcome is acceptable. Optimal settings for apicectomy with VSP laser are 380 mJ/100 microseconds/20 Hz.

Cited by 24 publications

References 16 publications

Apical Sealing Quality ofIn VitroApicectomy Procedures After Using Both Er:YAG and Nd:YAG

Apical Sealing Quality ofIn VitroApicectomy Procedures After Using Both Er:YAG and Nd:YAG

Impact of Er:YAG laser pulse duration on ultra-structure of dentin collagen fibrils

The use of the erbium yttrium aluminium garnet (2,940 nm) in a laser-assisted apicectomy procedure

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