@article{oai:mdu.repo.nii.ac.jp:00000701,
 author = {KAWABATA, AKEMI and IWASAKI, HIROSHI and YAGASAKI, ANGELI and MIYAZAWA, HIROO},
 issue = {2-3},
 journal = {松本歯学},
 month = {Dec},
 note = {application/pdf, To evaluate the usefulness and safety of Er: YAG laser for cavity preparation of immature teeth, we irradiated the tooth substance using Er: YAG laser in teeth of rats in the growth stage and human immature premolars showing an incomplete root and determined appropriate irradiation conditions, observed the irradiated surface by scanning electron microscopy (SEM), evaluated the thermal effects of irradiation, and performed histopathological examination. SEM of the irradiated surface revealed no smear layer or dentinal plug observed after cavity preparation using an air turbine, and the dentinal tubules were open. Neither carbonization nor cracks were observed after irradiation at 50, 100, or 150mJ/pulse. Evaluation of thermal effects showed a mean temperature of less than 5℃ in the dentin on the pulp side after irradiation by each combination of the following conditions: dentin thickness, 1.0 or 1.5mm irradiation time, 2, 5, or 10 seconds; and energy, 50, 100, or 150mJ/pulse. Histopathological examination showed circulatory impairment and disarrangement of odontoblasts immediately after irradiation but tendency to recovery after 1 week. These results suggest the applicability of YAG laser to irradiation of the tooth substance. Considering the effects on the pulp, irradiation at 50-100mJ/pulse may be useful and safe for irradiation of the tooth substance of immature teeth.},
 pages = {141--165},
 title = {Application of Er: YAG Laser Irradiation to Immature Teeth},
 volume = {25},
 year = {1999}
}