Histological results following in-vivo cavity preparation with an Er:YAG laser

Miserendino, Leo J.; Cozean, Colette D.

doi:10.1117/12.306036

Cited by 6 publications

(4 citation statements)

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“…These results are in agreement with those of a previous study that showed that pulp response to cavities prepared with Er:YAG laser using air-water spray was minimal, reversible and comparable to the response produced by high-speed handpiece burs 28 . In other in vivo studies 5 , 19 , there were no significant differences in the histological changes in dentin and pulp tissue, when either Er:YAG laser or high-speed burs were used. Tazikawa 30 , in an in vivo experiment using human teeth, confirmed the safety of Er:YAG laser use during cavity preparation as regards tooth pulp histology.…”

Section: Discussionmentioning

confidence: 71%

Pulpal temperature increase with high-speed handpiece, Er:YAG laser and ultrasound tips

et al. 2008

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The aim of this study was to compare intrapulpal temperature increase produced by high-speed handpiece, Er:YAG laser and CVDentus ultrasound tips during cavity preparation. Thirty bovine mandibular incisors with an enamel/dentin thickness of 4 mm at buccal surface had their roots amputated and were allocated to the following groups (n=10): Group I- high-speed handpiece; Group II- noncontact Er:YAG laser (250 mJ/4Hz); and Group III- CVDentus ultrasouns tips. All devices were used with water cooling. Class V cavities were prepared to a depth of 3.5 mm, measured with a periodontal probe. A type T thermocouple was placed inside the pulp chamber to determine the temperature increase (°C), which was recorded by a data acquisition system ADS 2000 IP (Lynx Technology) linked to a notebook computer. Data were analyzed statistically by oneway ANOVA and Tukey's test (p=0.05). The mean temperature rises were: 1.10°C (±0.56) for Group I, 0.84°C (±0.55) for Group II, and 3.00°C (± 1.34) for Group III. There were no statistically significant differences (p>0.05) between Groups I and II, but both of them differed significantly from Group III (p<0.05). In conclusion, the use of Er:YAG laser and high-speed handpiece for cavity preparation resulted in similar temperature increase. Although ultrasound tips generated significantly higher intrapulpal temperature increase, it remained below the critical value of 5.5°C and may be considered safe for use.

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Section: Discussionmentioning

confidence: 71%

Pulpal temperature increase with high-speed handpiece, Er:YAG laser and ultrasound tips

et al. 2008

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“…There are no signs of long-term damage, so the Er: YAG laser can be regarded as a safe treatment. [ 7 8 ]…”

Section: Discussionmentioning

confidence: 99%

A Light Microscopic Study Comparing Pulp Histological Alterations Following Tooth Preparation Using a High-speed Handpiece and an Er:YAG Laser

Keshav,

Brar,

Tuli

et al. 2024

Journal of Pharmacy and Bioallied Sciences

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Introduction: Histological alterations were evaluated in this study after tooth preparation with carbide burs using a traditional handpiece and Er:YAG laser. Methods: Tooth preparation was done on 30 intact maxillary first premolars of healthy patients. Ten maxillary first premolars were used as control, wherein no tooth preparation was done. Box-shaped tooth preparation was done on the occlusal surface of maxillary first premolars using carbide bur in the handpiece and Er:YAG laser (n = 10). After performing the recommended procedure for different groups, each tooth was extracted and 4–5 μm thick sections were prepared and stained using H and E stains. A 4–40× microscope was used to examine the morphological alterations in the odontoblasts. The Chi-square test was used to compare the outcomes. Results: The high-speed drill group and the control group had statistically significant differences (P = 0.05). High-speed drill and laser group differences were not statistically significant (P > 0.05) Conclusion: The histological findings as seen with laser tooth preparation were nearly identical to those of control or nonmanipulated teeth under light microscope, whereas disruption of odontoblastic layer was seen with high-speed drills.

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“…was investigated, but its treatment efficiency was lower, compared to Er:YAG [8,12]. The ruby laser ( 0.69 λ = μm) was used for treatment very soon after its design [13], but this radiation (as is the case of all lasers generating the wavelength for which absorption in water is lower [4]) penetrates deep into the hard tissue and the ablation effect is minimal. All the above mentioned lasers generated pulses in microsecond or even millisecond regions.…”

Section: Introductionmentioning

confidence: 99%

Hard tooth tissue removal by short and long Er:YAG or Er,Cr:YSGG mid-infrared laser radiation

et al. 2016

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Hard dental tissue removal by laser radiation is an alternative treatment to conventional dentaldrilling procedures. The advantages of this therapy are fast and localized treatment of hard dental tissue and painlessness. The most effective systems for those purposes are Er-lasers generating radiation at wavelengths of around 3 μm. The aim of this study was qualitative and quantitative examination of human dentin and ivory tissue removal by pulsed free-running (FR) and Q-switched (QSW) Er:YAG and Er,Cr:YSGG laser radiations. From the obtained results it follows that generally Er:YAG laser has lower threshold for the tissue removal in both FR and QSW regimes. Furthermore, the FR Er:YAG and Er,Cr:YSGG radiation can be effective for both dentin and ivory ablation and can prepare smooth cavities without side effects. The QSW regime is useful preferably for precise ablation of a starting tooth defect and for the part of the tooth very close to the gum. This regime is excellent for micro-preparation or for tooth treatment of children.

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Histological results following in-vivo cavity preparation with an Er:YAG laser

Cited by 6 publications

References 0 publications

Pulpal temperature increase with high-speed handpiece, Er:YAG laser and ultrasound tips

Pulpal temperature increase with high-speed handpiece, Er:YAG laser and ultrasound tips

A Light Microscopic Study Comparing Pulp Histological Alterations Following Tooth Preparation Using a High-speed Handpiece and an Er:YAG Laser

Hard tooth tissue removal by short and long Er:YAG or Er,Cr:YSGG mid-infrared laser radiation

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