Laser thresholds in pulp exposure: a rat animal model

In Vitro Evaluation of Dentin Tubule Occlusion by Denshield and Neodymium-doped Yttrium-Aluminum-Garnet Laser Irradiation

“…The thermal threshold for pulpal damage is generally not exceeded when the energy and power settings of the laser remain within the reported range (32). Apart from Nd:YAG, other types and wavelengths of laser irradiation have been used in vivo and in vitro with varying levels of success (30).…”

The Influence of Different Power Settings of Nd:YAG Laser Irradiation, Bioglass and Combination to the Occlusion of Dentinal Tubules

“…37 When the energy and power settings of the laser remain within the reported range (as used in this study), pulpal damage does not occur. 39 A recent systematic review concluded that laser therapy has a slight clinical advantage over topical medicaments in the treatment of dentin hypersensitivity, 40 although a placebo effect that contributes to the therapeutic outcome must be considered. 32 Bioactive glass (NM) has been introduced as a new treatment paradigm.…”

Treatment of dentine hypersensitivity by lasers: a review

“…Pulpal disruption did occur in laser-treated specimens with remaining dentine thickness of less than 1 mm, while pulps of intact and prepared teeth with remaining dentine thickness exceeding 1 mm were the same as controls, and no significant pulpal disruption was observed after laser exposures up to 240 J (2 W, 20 pps for 2 min) using the Nd:YAG laser (White et al 1991). After exposure to the Nd:YAG laser, no histologically measurable response was observed using a power of 50 mJ/ pulse at 10 Hz for 30 sec (total energy: 15 J) using rats (White et al 1995). However, treatment effects must be well controlled when using black ink as absorption enhancer.…”