CO2 laser-irradiation through topically applied fluoride increases acid resistance of demineralised human enamel in vitro

Schmidlin, Patrick R; Dörig, Iris; Lussi, Adrian; Roos, Malgorzata; Imfeld, Thomas (2007). CO2 laser-irradiation through topically applied fluoride increases acid resistance of demineralised human enamel in vitro. Oral health & preventive dentistry, 5(3), pp. 201-8. Berlin: Quintessenz Verlags-GmbH 10.1016/j.jdent.2004.06.010

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PURPOSE: To evaluate the effect of CO2 laser treatment through topically applied amine fluoride solution on demineralised enamel. MATERIALS AND METHODS: Sixty extracted human molar crowns were selected and cut longitudinally into half. One half was subjected to a 10-day pH-cycling procedure to create caries-like lesions, whereas the other was left non-demineralised. The following treatments were randomly assigned (one treatment per tooth, on respective non-demineralised and demineralised matched specimens): exposure to a 1% amine fluoride solution for 15 s without irradiation (group I), irradiation for 15 s with a continuous-wave CO2 laser (group II), or laser-treatment for 15 s through the amine fluoride solution applied immediately beforehand (group III). Fluoride uptake (n = 30) and acid resistance (n = 30) were determined after treatment. Enamel surface alterations after laser irradiation were monitored using scanning electron microscopy. RESULTS: In groups I and III, an increased fluoride uptake was detected (p < or = 0.05). Laser irradiation through topical fluoride resulted in an increased acid resistance of sound and demineralised enamel specimens in deeper layers (p < or = 0.05). In addition, less surface alterations were observed in SEM examination of specimens irradiated through the amine fluoride solution compared with counterparts treated with laser only. CONCLUSIONS: CO2 laser light application through an amine fluoride solution may be instrumental in enhancing acid resistance of sound and demineralised enamel.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Preventive, Restorative and Pediatric Dentistry

UniBE Contributor:

Lussi, Adrian

ISSN:

1602-1622

Publisher:

Quintessenz Verlags-GmbH

Language:

English

Submitter:

Eveline Carmen Schuler

Date Deposited:

04 Oct 2013 14:54

Last Modified:

25 Jan 2017 12:17

Publisher DOI:

10.1016/j.jdent.2004.06.010

PubMed ID:

17977291

Web of Science ID:

000224670100006

URI:

https://boris.unibe.ch/id/eprint/23161 (FactScience: 40005)

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