Cleaning and shaping the root canal with an Nd: YAG laser beam: A comparative study

Moogi, Prashant; Rao, RahulD

doi:10.4103/0972-0707.66718

Cited by 7 publications

(7 citation statements)

References 4 publications

(8 reference statements)

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“…Various types of lasers have been extensively studied in root canal treatments. Lasers have been investigated for their suitability in the preparation [18][19][20][21][22] and disinfection of the root canal [23][24][25] and in the removal of gutta-percha [26][27][28], but their usefulness for root canal filling has been investigated infrequently [16,29,30]. Maden et al [29] compared conventional lateral condensation, Nd:YAG lasersoftened gutta-percha, and the continuous wave of condensation technique using System B HeatSource to determine which caused the least apical leakage.…”

Section: Discussionmentioning

confidence: 99%

Root Surface Temperature Increases during Root Canal Filling In Vitro with Nd:YAG Laser-Softened Gutta-Percha

Podolak¹,

Nowicka

Woźniak

et al. 2020

Journal of Healthcare Engineering

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The aim of this in vitro study was to measure the temperature increases produced on the mesial and vestibular root surfaces of premolar teeth during a laser-softened gutta-percha obturation technique. We studied 12 extracted human premolar teeth with a single canal. After root canal cleaning and shaping, the teeth were obturated with gutta-percha that had been softened with a neodymium-doped yttrium aluminium garnet (Nd:YAG) laser (CTL 1503) at a wavelength of 1.064 nm. The laser setup parameters included a 30 Hz frequency and a 200 mJ/pulse with optical fiber tips of 0.320 mm diameter. A sectional warm gutta-percha condensation was used. Temperature changes on the whole mesial and vestibular outer surfaces of the roots were measured at approximately 2 s intervals with an infrared thermal imaging camera. A significantly higher increase in temperature was observed for the mesial root surface (7.5°C) compared to the vestibular surface (3.7°C) (p≈0). The findings suggested that root canal filling with Nd:YAG laser-softened gutta-percha in premolar teeth is not likely to damage the surrounding periradicular tissues. To obtain valid temperature results, the measurement should be performed on the surface with the thinnest root wall.

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Section: Discussionmentioning

confidence: 99%

Root Surface Temperature Increases during Root Canal Filling In Vitro with Nd:YAG Laser-Softened Gutta-Percha

Podolak¹,

Nowicka

Woźniak

et al. 2020

Journal of Healthcare Engineering

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“…One of the primary objectives of root canal therapy is cleaning of the canal system to eliminate tissue debris and microorganisms (Moogi & Rao, 2010). Studies have indicated that chemico-mechanical instrumentation in combination with canal irrigation cannot completely remove debris from the root canal system.…”

Section: Discussionmentioning

confidence: 99%

“…Moogi & Rao (2010) used SEM to compare the effectiveness of an experimental Nd:YAG laser fiber optic delivery system with conventional methods to clean and shape the root canal space. Results indicated that the laser beam improves the cleanliness of canal walls in comparison with conventional techniques.…”

Section: Discussionmentioning

confidence: 99%

“…It also prevents the penetration of root canal medications and sealers into the dental tubules and renders sealing of the obturation agent difficult (Orstavik & Haapasalo, 1990;Economides et al, 1999;Shahravan et al, 2007;Yildirim et al, 2008). One of the primary objectives of root canal therapy is cleaning of the canal system to eliminate tissue debris and microorganisms (Moogi & Rao, 2010). Studies have indicated that chemico-mechanical instrumentation in combination with canal irrigation cannot completely remove debris from the root canal system.…”

Section: Discussionmentioning

confidence: 99%

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Scanning Electron Microscopy Comparison of the Cleaning Efficacy of a Root Canal System by Nd:YAG Laser and Rotary Instruments

et al. 2014

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This study evaluated the cleaning efficacy of a root canal system by Nd:YAG laser and rotary instruments. Sixty single-rooted human teeth were divided into four experimental groups (n=15). In the first group the teeth were prepared with a step-back technique using conventional K-files. In the second and third groups, tooth preparation was carried out using Nd:YAG laser and rotary NiTi instruments, respectively. Teeth in the fourth group were prepared by combined laser and rotary methods. The smear layer remaining on canal walls was then assessed by scanning electron microscopy in the coronal, middle, and apical portions. The comparison of smear layer removal efficacy between groups was carried out by Kruskal-Wallis and Mann-Whitney U tests. The mean grades of smear layer removal in rotary-laser, rotary, laser and step-back techniques were 1.34 ± 0.18, 2.2 ± 0.28, 1.91 ± 0.25, and 2.42 ± 0.19, respectively. On the whole, differences between rotary-laser and rotary groups, step-back, and the three other techniques (rotary, laser, and rotary-laser) were significant at p=0.034. Based on the findings of this study, the cleaning efficacy of rotary, laser, and rotary-laser techniques were better than the step-back technique and the combined laser and rotary technique was the most efficient method.

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“…Cleansing and shaping of the root canal system, followed by adequate obturation are the major objectives of endodontic treatment. [ 1 ] Root canal obturation provides a seal that prevents microleakage and subsequent reinfection of the canal and the periradicular tissues. [ 2 ] For this reason, different endodontic materials and obturation techniques have been applied for decreasing microleakage and improvement of seal.…”

Section: Introductionmentioning

confidence: 99%

Lack of correlation between microbial penetration method and electro chemical technique for assessment of leakage through the root canal fillings

et al. 2014

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Aims:The purpose of this study was to compare microbial penetration method and electrochemical technique for evaluation of the apical seal.Materials and Methods:A total of 28 teeth were prepared using the step-back technique to ISO size 40 master apical files. The specimens were randomly divided into an experimental group, two positive and two negative controls. Root canals in the experimental and negative control group were filled with gutta-percha (GP) and sealer, using lateral condensation technique. In the positive control group, canals were filled with GP without any sealer. The external surface of each tooth was coated with two layers of the nail varnish, except for the access opening and the apical foramen. In the negative control group, the teeth were completely covered with nail varnish. The apical seal was recorded with two methods, each successively used on the same teeth: An electrochemical method and a bacterial penetration method.Statistical Analysis Used:The correlation of the electro chemical readings with the results obtained from bacterial micro leakage test was evaluated by Pearson's correlation coefficient.Results:Correlation coefficient of the measurements obtained from the two evaluation methods, was 0.23 (r = 0.23), so the correlation was not statistically significant (P = 0.275).Conclusions:This study shows that several studies by different methods are necessary before evaluation of the marginal leakage.

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Cleaning and shaping the root canal with an Nd: YAG laser beam: A comparative study

Cited by 7 publications

References 4 publications

Root Surface Temperature Increases during Root Canal Filling In Vitro with Nd:YAG Laser-Softened Gutta-Percha

Root Surface Temperature Increases during Root Canal Filling In Vitro with Nd:YAG Laser-Softened Gutta-Percha

Scanning Electron Microscopy Comparison of the Cleaning Efficacy of a Root Canal System by Nd:YAG Laser and Rotary Instruments

Lack of correlation between microbial penetration method and electro chemical technique for assessment of leakage through the root canal fillings

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