A clinical study of pulsed Nd: YAG laser-induced pulpal analgesia

Whitters, C.J.; Hall, A.F.; Creanor, S.L.; Moseley, Harry; Gilmour, W. Harper; Strang, R.; Saunders, W. P.; Orchardson, R.

doi:10.1016/0300-5712(95)93571-i

Cited by 73 publications

(45 citation statements)

References 4 publications

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“…7 Whitters and others 34 suggested direct nerve analgesia as a possible mechanism; they conducted a clinical trial using an electric pulp tester to measure the extent and duration of any analgesic effect induced by pulsed Nd:YAG laser treatment. A statistically significant increase in pain thresholds was observed in the mean responses measured five minutes after laser treatment with 113-mJ pulses at 15 pulses (pps) for three minutes.…”

Section: Discussionmentioning

confidence: 99%

Occluding Effect of Nd:YAG Laser and Different Dentin Desensitizing Agents on Human Dentinal Tubules In Vitro: A Scanning Electron Microscopy Investigation

Al‐Saud¹,

Al-Nahedh²

2012

Operative Dentistry

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SUMMARY Objectives This in vitro study aimed to microscopically evaluate and compare the occluding effect of the Nd:YAG laser and different dentin desensitizing agents on human dentinal tubules. Materials and Methods The Nd:YAG laser (SunLase™ 800) and four commercially available and professionally applied dentin desensitizers (Gluma® desensitizer, Tenure Quick®, Quell™ desensitizer, and VivaSens®) were investigated in this study. Sixty-four extracted intact human molars were used. Each dentin surface was divided by shallow indentation into two halves, one of which was used for treatment and the other of which served as a control. The dentin surfaces were etched to remove any smear plugs and to mimic the open dentinal tubules of sensitive dentin using 0.5 M ethylenediaminetetraacetic acid (pH 7.4) for two minutes (applied with a microbrush) and then rinsed with an air-water syringe for 30 seconds. The laser samples (n=16) were randomly divided into four groups of four samples each. These groups were the step-up technique group, the 14-day group, the one-minute group, and the two-minute group. Forty-eight samples were treated with the four tested desensitizing agents and were randomly divided into four groups (n=12/group). Each group was further subdivided into three subgroups (n=4). Samples of the first subgroup were treated for 14 days, while those of the second subgroup were treated once. Samples of the last subgroup were fractured longitudinally after a single treatment. All of the samples were then examined under a scanning electron microscope. Results The Nd:YAG laser–irradiated dentin showed reduction or complete obliteration of the dentinal tubule lumen; thus, the treatment modified the original dentinal structure. The lased dentin surface in the two-minute group showed bubble-like changes in the area of the dentinal tubules' orifices. Statistically, the two-minute group was found to have a significantly higher percentage of partially or fully occluded tubules than did the one-minute group. All of the studied desensitizing agents produced occlusion of the dentinal tubules; however, the appearance of the precipitates, the level of coverage, and the degree of dentinal occlusion varied among the tested products. Conclusion Throughout the specified period of this study, occlusion and/or narrowing of the open dentinal tubules have been successfully achieved with both treatment approaches.

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Section: Discussionmentioning

confidence: 99%

Occluding Effect of Nd:YAG Laser and Different Dentin Desensitizing Agents on Human Dentinal Tubules In Vitro: A Scanning Electron Microscopy Investigation

Al‐Saud¹,

Al-Nahedh²

2012

Operative Dentistry

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“…There have been some reports on use of black ink for enhancing the effects of Nd:YAG laser irradiation to treat dentine hypersensitivity (Gelskey et al 1993, Yonaga et al 1999, Kobayashi et al 1999, and indeed treatment effectiveness using black ink was better than without (Yonaga et al 1999). The mechanism of Nd:YAG laser effects on dentine hypersensitivity is thought to be the laser-induced occlusion or narrowing of dentinal tubules (Lan & Liu 1995, Yonaga et al 1999) as well as direct nerve analgesia (Whitters et al 1995). In hypersensitive dentine, most dentinal tubules appear open when visualised by scanning electron microscopy (Matsumoto et al 1980(Matsumoto et al , 1982.…”

Section: Middle Output Power Lasersmentioning

confidence: 99%

“…Nd:Y-AG and CO 2 lasers effectively cause occlusion of dentinal tubules. Laser energy at 1064 nm is transmitted through dentine (Zennyu et al 1996), producing thermally mediated effects on microcirculation (Funato et al 1991), and pulpal analgesia via its nerve system (Whitters et al 1995). A variety of theories have been put forward as to how the laser produces its analgesic effect.…”

Section: Middle Output Power Lasersmentioning

confidence: 99%

Treatment of dentine hypersensitivity by lasers: a review

Kimura

Wilder‐Smith

Yonaga

et al. 2000

J Clinic Periodontology

288

224

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Background, aims: Since the development of the ruby laser by Maiman in 1960, a variety of papers on potential applications for lasers in dentistry have been published. The purpose of this paper is to summarise laser applications for the treatment of dentine hypersensitivity. The effects of laser on pulp tissue and problems on laser treatment are also reviewed. This article reviews the role of lasers for the treatment of dentine hypersensitivity since 1985, summarises many research reports from the last decade, and surmises what the future may hold for lasers in this treatment. Method: To date, 4 kinds of lasers have been used for the treatment of dentine hypersensitivity, and the effectiveness ranged from 5.2 to 100%, which was dependent on the laser type and parameters used. The mechanism involved in laser treatment of dentine hypersensitivity are relatively unknown. Results: These require clarification to result in safely effective treatment optimization. In general, the efficiency for the treatment of dentine hypersensitivity using lasers is higher than other methods, but in severe cases, it is less effective. Conclusion: It is necessary to consider the severity of dentine hypersensitivity before laser use.

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“…[46][47][48][49][50][51] The use of the Nd:YAG laser in developing pulpal analgesia, possibly through interference with the 'gate theory' of neural stimulus propagation, has been suggested, although investigation into the subjectivity or placebo effect has rendered its application inconsistent. [52][53][54] Perhaps of greater signifi cance in addressing claims of pain avoidance during laserassisted tooth preparation is the lack of tactile and thermal stimulation compared to rotary instrumentation. In addition, there is the patient-centred factor of previous experience of turbine use together with other emotional and conditioning states.…”

Section: Pain Perception During Laser-assisted Cavity Preparationmentioning

confidence: 99%

Surgical lasers and hard dental tissue

Parker

2007

Br Dent J

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A clinical study of pulsed Nd: YAG laser-induced pulpal analgesia

Cited by 73 publications

References 4 publications

Occluding Effect of Nd:YAG Laser and Different Dentin Desensitizing Agents on Human Dentinal Tubules In Vitro: A Scanning Electron Microscopy Investigation

Occluding Effect of Nd:YAG Laser and Different Dentin Desensitizing Agents on Human Dentinal Tubules In Vitro: A Scanning Electron Microscopy Investigation

Treatment of dentine hypersensitivity by lasers: a review

Surgical lasers and hard dental tissue

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