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Preventive effect of tooth fracture by pulsed Nd:YAG laser irradiation with diamine silver fluoride solution.

AbstractOBJECTIVE:
The purpose of the present study was to evaluate the preventive effect of pulsed Nd:YAG laser irradiation with 38% diamine silver fluoride [Ag(NH3)2F] solution for the fracture of endodontically treated teeth in vitro.
BACKGROUND DATA:
There have been no reports on the preventive effect of tooth fracture using Nd:YAG laser with Ag(NH3)2F solution.
MATERIALS AND METHODS:
Twenty-eight human extracted teeth were used in this study. The teeth were randomly classified into four groups: control group, where tooth surfaces were not submitted to any treatment; group 1, where tooth surfaces were coated with 38% Ag(NH3)2F solution; group 2, where tooth surfaces were coated with Ag(NH3)2F solution and irradiated by pulsed Nd:YAG laser for 2 sec; and group 3, where tooth surfaces were coated with Ag(NH3)2F solution and irradiated by pulsed Nd:YAG laser for 10 sec. After preparation, shear tests were performed and the maximum load for the fracture was measured. Results were analyzed using the Scheffe test, and difference at p < 0.05 was considered significant.
RESULTS:
The failure load for group 2 (mean, 182.5 kg) had the highest mean value and differed significantly from those for the control group (mean, 146.3 kg) and group 1 (mean, 147.1 kg; p < 0.05). The failure loads for groups 1 and 3 (mean, 150.0 kg) did not differ significantly from that for the control group (p > 0.05).
CONCLUSION:
The results show that the application of 38% Ag(NH3)2F solution followed by pulsed Nd:YAG laser irradiation for 2 sec is useful for prevention of tooth fracture at endodontically treated teeth.
AuthorsK Yokoyama, Y Kimura, K Matsumoto, A Fujishima, T Miyazaki
JournalJournal of clinical laser medicine & surgery (J Clin Laser Med Surg) Vol. 19 Issue 6 Pg. 315-8 (Dec 2001) ISSN: 1044-5471 [Print] United States
PMID11776449 (Publication Type: Comparative Study, Journal Article)
Chemical References
  • Fluorides, Topical
  • Quaternary Ammonium Compounds
  • Silver Compounds
  • Solutions
  • Neodymium
  • silver diamine fluoride
Topics
  • Fluorides, Topical
  • Humans
  • Low-Level Light Therapy (methods)
  • Molar
  • Neodymium
  • Probability
  • Quaternary Ammonium Compounds (pharmacology)
  • Random Allocation
  • Reference Values
  • Sensitivity and Specificity
  • Silver Compounds
  • Solutions
  • Tooth Fractures (prevention & control)

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