Subablative Er: YAG laser effect on enamel demineralization

Y. Liu, C. Y.S. Hsu, Jeremy Teo, S. H. Teoh

Research output: Contribution to journalArticle

Abstract

Objectives: To characterize the cariostatic potential of a low-energy Er:YAG laser treatment. Methods: Twelve sound premolars were selected. Two 2 × 1 mm windows were created on each tooth and randomly assigned to L 1 and L2 groups. Three sites in each window were chosen with the middle site as the control and the left and right ones receiving Er:YAG laser treatment of 5.1 J/cm2 (L1) or 2.0 J/cm2 (L2), respectively. The teeth were further subjected to 4-day pH cycling to create caries-like lesions. After mineral quantification using a micro-computed tomography scanner, the preventive effects (ΔML = mineral loss of the control area minus that of the lased area) of L1 and L2 treatments were calculated based on the difference in the gray value of the control and lased sites. Results: Significant inhibitory effects of L1 and L2 on enamel demineralization were demonstrated (both p ≤ 0.001), with the L1 treatment having a greater effect (45.2%) than the L2 treatment (25.2%, p = 0.004). Conclusions: Subablative low-energy Er:YAG laser irradiation can significantly prevent enamel demineralization potentially through the retardation of enamel diffusion. This study confirmed that high-energy laser treatment, which may damage the peripheral and underlying tissues, may not be needed for caries prevention.

Original languageEnglish (US)
Pages (from-to)63-68
Number of pages6
JournalCaries Research
Volume47
Issue number1
DOIs
StatePublished - Jan 1 2013

Fingerprint

Solid-State Lasers
Dental Enamel
Minerals
Tooth
X-Ray Computed Tomography Scanners
Bicuspid
Lasers

Keywords

  • Enamel caries
  • Er:YAG laser
  • Mineral loss
  • X-ray micro-computed tomography

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Subablative Er : YAG laser effect on enamel demineralization. / Liu, Y.; Hsu, C. Y.S.; Teo, Jeremy; Teoh, S. H.

In: Caries Research, Vol. 47, No. 1, 01.01.2013, p. 63-68.

Research output: Contribution to journalArticle

Liu, Y. ; Hsu, C. Y.S. ; Teo, Jeremy ; Teoh, S. H. / Subablative Er : YAG laser effect on enamel demineralization. In: Caries Research. 2013 ; Vol. 47, No. 1. pp. 63-68.
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