Comparative evaluation of microleakage after root-end resection by erbium, chromium: Yttrium-scandium-gallium-garnet (Er, Cr:YSGG) laser and carbide bur with or without placement of mineral trioxide aggregate: An in vitro study

Negi, Shabnam; Adhikari, Hari Das; Mazumder, Dibyendu; Lakiang, R Deirimika; Bhardwaj, Sarita

doi:10.4103/jcd.jcd_48_19

Cited by 4 publications

(2 citation statements)

References 20 publications

(20 reference statements)

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“…CO-DW, control; TL-2.5, Thera Lase with 2.5 W of potency; TL-2.7, Thera Lase with 2.7 W of potency; GE-1.5, Gemini 1.5 W of potency; GE-1.7, Gemini with 1.7 W of potency; RC, near to the root canal; ER, near to the external root surface; SD, standard deviation. Different laser sources have been recently used to irradiate root-end resected surfaces and retrograde obturation cavities [7,9,12,13]. However, irradiation protocols with diode lasers, such as GaAlAs are routinely used only for disinfection of root canals and in periapical surgery [6,20].…”

Section: Discussionmentioning

confidence: 99%

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Effect of laser irradiation protocols on temperature, roughness, and morphology of the root surface after root-end resection

Fiscarelli¹,

Silva²,

Oliveira³

et al. 2022

Laser Phys.

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This study evaluated the effect of laser irradiation protocols using Thera Lase Surgery (TL), at 2.5 W (2.5) or 2.7 W (2.7), and Gemini (GE), at 1.2 W (1.2) or 1.5 W (1.5) of potency, on the root-end resection surface, in relation to external root temperature, roughness, and surface morphologic changes after the treatments, in the areas near to the root canal (RC) or external root surface (ER). Fifty teeth were endodontically treated and the root-end were resected 3 mm away from the root apex. The specimens were randomized into 5 groups (n = 10), according to the laser irradiation protocol: Control (CO-DW) without irradiation; (TL-2.5) Thera Lase Surgery, 2.5 W; (TL-2.7) Thera Lase Surgery, 2.7 W; (GE-1.2) Gemini, 1.2 W; and (GE-1.5) Gemini, 1.5 W. The external root temperature change was obtained through the difference between the highest value observed during the irradiation and the value at the beginning of the treatment. The surface roughness (µm) was analyzed by confocal laser microscopy and the apical surface morphology was evaluated by scanning electron microscopy, in RC or ER. The temperature change was similar between the irradiation protocols (p > 0.05). CO-DW and GE-1.5 provided the lowest surface roughness (p < 0.05), regardless of the analyzed area. TL-2.7 and GE-1.7 showed more uniform on apical resected morphology and a higher incidence of dentinal tubules occlusion, but only near the root canal (p < 0.05). Root-end resected surface submitted to TL-2.7 and GE1.7 irradiation protocols are more homogeneous and shown higher incidence of closed dentinal tubules near to root canal, despite providing a surface roughness.

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Section: Discussionmentioning

confidence: 99%

“…The evaluation of changes on external radicular surface temperature after laser irradiation is crucial to predict possible damages to periodontal tissues [7,8]. If the irradiation promotes excessive increase of temperature, it may result in root microcracks, compromising the apical sealing and the treatment longevity [9][10][11].…”

Section: Introductionmentioning

confidence: 99%