Pulpal Response to Cavity Preparation by an Erbium, Chromium:ysgg Laser-Powered Hydrokinetic System

Eversole, Lewis R.; Rizoiu, Ioana; Kimmel,

doi:10.14219/jada.archive.1997.0367

Cited by 122 publications

(67 citation statements)

References 23 publications

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“…When Er, Cr: YSGG laser preparation was supplemented with acid etching, there were no significant differences in the microleakage of composite fillings in Class II cavities between laser and classical bur preparations 7) . Moreover, pulpal temperature increased by only 2℃ when dentin was irradiated by Er, Cr: YSGG laser 8) , and no pulpal inflammatory responses could be identified either immediately or 30 days after laser preparation 9) . Furthermore, Er, Cr: YSGG laser could be utilized as an etching tool.…”

Section: Introductionmentioning

confidence: 91%

Tensile Bond Strength of Er, Cr: YSGG Laser-irradiated Human Dentin to Composite Inlays with Two Resin Cements

Tseng

Chen

et al. 2007

Dent. Mater. J.

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The purpose of this study was to investigate the tensile bond strength of composite inlays to human dentin with two different cavity preparation tools (bur versus Er, Cr: YSGG laser) and with two different bonding procedures (total-etch: Variolink II versus self-etch: Maxcem). The specimens were divided into four groups: bur-cut/Variolink II, bur-cut/Maxcem, laser-ablated/Variolink II, and laser-ablated/Maxcem. The following characteristics were then investigated: morphological change, dentin-resin cement interface, surface roughness, and tensile bond strength. Results demonstrated that the tensile bond strengths of the four groups were 19.11±5.88 MPa, 8.54±2.38 MPa, 13.72±3.43 MPa, and 12.11±3.71 MPa, respectively. We concluded that Variolink II provided higher tensile bond strength to composite inlays than Maxcem. On the other hand, the bond strength of Variolink II with dentin cavity prepared by Er, Cr: YSGG laser was statistically lower than that prepared by bur.

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Section: Introductionmentioning

confidence: 91%

Tensile Bond Strength of Er, Cr: YSGG Laser-irradiated Human Dentin to Composite Inlays with Two Resin Cements

Tseng

Chen

et al. 2007

Dent. Mater. J.

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“…The resultant micro-explosive force of photons on water droplets is responsible for the mechanism of removal of hard dental tissues, without the thermal side effects on the pulp, which is responsible for the pain and post-operative sensitivity [13,14]. In the last 10 years, numerous studies have been published showing reduced pain perception and improved patient acceptance of laser cavity preparations, with both the Er:YAG [15,16] and the Er,Cr:YSGG pulsed laser systems [17,18].…”

Section: Introductionmentioning

confidence: 99%

Review of possible predictors for pain perception with class 1–5 cavity preparations using Er,Cr:YSGG laser: a retrospective clinical in vivo study

Polonsky¹,

Gutknecht²,

Franzen

2017

Laser Dent Sci

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Aim The study recorded 400 responses from 301 patients, aged 6-93, who all had carious lesions prepared with the erbium, chromium: yttrium-scandium-gallium-garnet (Er,Cr:YSGG) 2780-nm laser system. Different parameters, including gender, delivery method, power settings, tooth position, class type of cavity preparation, and patients' age, were compared and analyzed for possible predictive values in anticipating the patients' pain experience. Methods Class 1-5 cavity preparations were made using the Er,Cr:YSGG laser. All carious lesions fit ICDAS code 4-5 classifications. Power setting of 3.75 W was used for posterior teeth class 1-4 preparations and 2.5 W for all primary teeth, permanent anterior teeth, and all class 5 preparations. Nonanxious patients, who agreed to start cavity preparation without a local anesthetic, were instructed to stop the procedure and ask for an anesthetic injection, should they perceive a level of pain greater than their tolerance level. Anxious patients were not included in this study. Pain perception using the visual analog scale (VAS) along with the percentage of patients who needed a local anesthesia injection were recorded. The data was then analyzed using one-way ANOVA test, at significance level of α = 0.05, and Tukey pair-wise comparison, at 95% confidence interval. Results Eighty-five percent of cavity preparations were pain free; 15% of the preparations were found to have a degree of pain associated with them. However, only 6% requested a local anesthetic injection. There was no significant difference found between the two methods of delivery: gold handpiece (HP) vs. turbo HP. No significant differences were observed between males and females, regarding pain perception (13% vs. 18%, respectively). Posterior teeth were significantly more sensitive to laser cavity preparation, compared to anterior teeth, as indicated by the VAS pain scores (P value = 0.0001). Regarding anterior teeth, class 5 was significantly more sensitive to laser cavity preparations, when compared to class 1. In posterior teeth, there were no statistically significant differences between class 1 and 5, although pain perception was the most prevalent in class 2 preparations. Using higher-power settings (3.75 W vs. 2.5 W) for cavity preparation, the resulting pain response was significantly higher, as indicated by the VAS pain scores (P value = 0.0001). As the patients' age increases, the frequency of those experiencing pain decreases, with the exception of a sudden spike for the cohort aged 26-35, who proved to be the most sensitive to laser cavity preparation; this group was significantly different from all other age groups (P value = 0.0001). Conclusions The Er,Cr:YSGG laser system is an effective method for pain-free cavity preparations for 85% of the general patient population, who do not suffer from dental anxiety. Certain patient selection criteria, including age, power settings, and class type of cavity preparation, are important in achieving an overall positive and pain-free expedience.

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“…This laser can be effectively used to cut enamel, dentin, cementum and bone when used with water and air as cooling agents. (5,6) Studies by Hossain et al, have shown that in laser-irradiated dentin surfaces the orifices of the dentinal tubules are large and irregular, and no smear layer or thermal changes such as fusion and carbonization are visible. (7) In contrast, Yamazaki et al, reported that high-power laser irradiation led to fusion, carbonization and formation of big cracks on the root canal walls.…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Treatment, Self-Adhesive Resin Cement Brand and Thermocycling on Push out Bond Strength of Fiber Reinforced Post

et al. 2016

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The interface between the adhesive resin and fiber posts has an important role in their performance. However, It was found that the most frequent cause of their failure is debonding at the adhesive resin-dentin interface. The aim of the present study was to evaluate the effect of laser treatment: Erbium, Diode or no treatment; and two brands of self-adhesive resin cement: hydrophobic (Smartcem2) and conventional (Breeze); in addition to the effect of thermocycling on push out bond strength of Glassix fiber-reinforced composite post. A total of ninety-six freshly extracted natural human teeth were equally divided into three main groups after root canal treatment, decoronatin and post space preparation. Teeth of group 1 were treated with Er,Cr:YSGG laser, group 2 were treated with Diode laser, while the teeth of group 3 [control] received no laser treatment. Posts in half of the speciemens of the three groups were cemented with hydrophobic resin cement (Smartcem2) and the rest were cemented with conventional resin cement (Breeze). Samples of each group were further subdivided into two subgroups according to whether they were thermocycled or not. Three slices of 3mm-thickness: cervical, middle and apical were prepared from each root. Then a push-out test was performed using universal testing machine at a strain rate of 0.5 mm/min. Data were analyzed using Unpaired t test. One-way analysis of variance (ANOVA) test was used to study the effect of different variables' interactions. This was followed by Tukey's post hoc test when a significant difference was detected. The significance level was set at p ≤ 0.05. The results revealed that the Er,Cr:YSGG -2790 nm laser afforded greater bond strength than the diode laser. The hydrophobic self-adhesive resin cement demonstrated higher bond strength than the other brand. In addition, thermal stresses induced by thermocycling reduced the bond strength of Glassix fiber post.

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Pulpal Response to Cavity Preparation by an Erbium, Chromium:ysgg Laser-Powered Hydrokinetic System

Cited by 122 publications

References 23 publications

Tensile Bond Strength of Er, Cr: YSGG Laser-irradiated Human Dentin to Composite Inlays with Two Resin Cements

Tensile Bond Strength of Er, Cr: YSGG Laser-irradiated Human Dentin to Composite Inlays with Two Resin Cements

Review of possible predictors for pain perception with class 1–5 cavity preparations using Er,Cr:YSGG laser: a retrospective clinical in vivo study

Effect of Laser Treatment, Self-Adhesive Resin Cement Brand and Thermocycling on Push out Bond Strength of Fiber Reinforced Post

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