Carbon dioxide laser effects on caries-like lesions of dental enamel

John D. B. Featherstone; S. H. Zhang; M. Shariati; Sandra M. McCormack

doi:10.1117/12.44002

1 May 1991 Carbon dioxide laser effects on caries-like lesions of dental enamel

John D. B. Featherstone, S. H. Zhang, M. Shariati, Sandra M. McCormack

Proceedings Volume 1424, Lasers in Orthopedic, Dental, and Veterinary Medicine; (1991) https://doi.org/10.1117/12.44002
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

Previous studies by the authors have shown that carbon dioxide (CO₂) laser light has marked effects on dental hard tissues and that these effects are wavelength-dependent. The aim of the present study was to determine whether treatment by CO₂ laser of caries-like lesions in human enamel would inhibit subsequent lesion progression. Nine groups of 10 teeth each with preformed caries-like lesions were treated with/without CO₂ laser (9.32 micrometers , 15 mJ or 25 mJ per pulse) by a pulsed laser (100-200 nsec) for either 200 or 400 pulses. Preformed lesions were then treated with acidulated phosphate fluoride for 5 minutes with control groups with no fluoride treatment. Teeth were subjected to a subsequent pH cycling challenge to determine the protection against lesion progression. Low energy laser treatment coupled with fluoride treatment entirely inhibited subsequent lesion progression in this model system.

Citation Download Citation

John D. B. Featherstone, S. H. Zhang, M. Shariati, and Sandra M. McCormack "Carbon dioxide laser effects on caries-like lesions of dental enamel", Proc. SPIE 1424, Lasers in Orthopedic, Dental, and Veterinary Medicine, (1 May 1991); https://doi.org/10.1117/12.44002

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