Nd:YAG laser in caries prevention: A clinical trial
Article first published online: 13 JAN 2009
Copyright © 2009 Wiley-Liss, Inc.
Lasers in Surgery and Medicine
Volume 41, Issue 1, pages 31–35, January 2009
How to Cite
Zezell, D. M., Boari, H. G. D., Ana, P. A., Eduardo, C. d. P. and Powell, G. L. (2009), Nd:YAG laser in caries prevention: A clinical trial. Lasers Surg. Med., 41: 31–35. doi: 10.1002/lsm.20738
- Issue published online: 13 JAN 2009
- Article first published online: 13 JAN 2009
- Manuscript Accepted: 24 NOV 2008
- dental enamel;
- enamel demineralization;
- in vivo study
Background and Objective
It is widely known that Nd:YAG can increase enamel resistance to demineralization; however, there are no studies that report the application of Nd:YAG associated with topical application of fluoride in vivo. The aim of this study was to evaluate the effects of the Nd:YAG laser, when associated with the topical application of acidulated phosphate fluoride (APF), for preventing enamel demineralization in vivo.
Materials and Methods
A double-blind crossover experimental design was used, in which 121 teeth of 33 volunteers were selected. In all volunteers, the right side teeth were selected for Nd:YAG laser+APF application (lased group) and the left side teeth were kept as control group (only APF application). Nd:YAG laser was applied at 60 mJ/pulse, at a repetition rate of 10 Hz and fluence of 84.9 J/cm2; after that, topical APF was applied for 4 minutes. Recalls were made after 1 year in order to evaluate the formation of white-spot lesions or caries cavities.
After 1 year, this in vivo experiment showed a reduction of 39.2% in caries incidence in lased group when compared with the control. The number of white-spots or caries cavities decreased significantly (P = 0.0043) in the Nd:YAG laser group; the formation of white-spots was significantly less (P = 0.0031) when compared with the number of lesions in the control group.
Combined Nd:YAG laser and topical fluoride treatment was effective for reducing the incidence of caries in vivo. Lasers Surg. Med. 41:31–35, 2009. © 2008 Wiley-Liss, Inc.