Effect of Er:yag Laser Irradiation on Enamel Caries Prevention
نویسنده
چکیده
Background and Aim: The aim of this study was to examine the effect of Er:YAG laser irradiation on caries-like lesions in a simulated caries model. Materials and Methods: Twenty extracted human noncarious molar teeth were selected. The teeth were covered with nail varnish, leaving two windows (approximately 4mm×2mm) on both the buccal and lingual surfaces at the middle third of the crown. The windows were randomly assigned to the four groups, which were no-treatment (G1), Er:YAG laser (KaVo KEY Laser 3, KaVo Dental GmbH) irradiation alone (G2), acidulated phosplate floride (APF) gel (Sultan/topex Neutral Ph Gel, Sultan Dental Products Ltd) treatment alone (G3) and Er:YAG laser irradiation before APF gel treatment (G4). A two-day pH-cycling was performed, with an 18-hour demineralization followed by a 6-hour remineralization. Sections of 120±20 μm in thickness were obtained from each window. Mean lesion depth was measured using polarized light microscope. Results were statistically analyzed by using Kruskal-Wallis and MannWhitney U tests. Results: Mean lesion depths were 134±32 micrometers for group G1, 90±18 μm for group G2, 109±25 μm for group G3, and 74±23μm for group G4. Mean lesion depths of all treatment groups were significantly less than those for the matched notreatment group (p<0.05). Er:YAG laser irradiation before APF gel treatment significantly reduced lesion depth compared with the no-treatment and APF gel treatment alone (p<0.05). Conclusion: Er:YAG laser irradiation in combination with fluoride treatment was improved resistance to enamel dissolution and reduced the mean lesion depth.
منابع مشابه
The use of sub-ablative Er:YAG laser irradiation in prevention of dental caries during orthodontic treatment.
PURPOSE This « in-vitro » study had two specific aims: the first, to test using a universal testing machine whether sub-ablative Er:YAG laser irradiation prior to acid etching is effective in orthodontic bracket bonding and secondly using micro-hardness measurements and Scanning Electron Microscopy (SEM) observations to investigate the effectiveness of de-mineralization reduction in enamel trea...
متن کاملFT-Raman spectroscopic characterization of enamel surfaces irradiated with Nd:YAG and Er:YAG lasers
Background. Despite recent advances in dental caries prevention, caries is common and remains a serious health problem. Laser irradiation is one of the most common methods in preventive measures in recent years. Raman spectroscopy technique is utilized to study the microcrystalline structure of dental enamel. In this study, FT-Raman spectroscopy was used to evaluate chemical changes in enamel s...
متن کاملComparative evaluation of the effect of Er:YAG laser and low level laser irradiation combined with CPP-ACPF cream on treatment of enamel caries
OBJECTIVES This study investigated the effectiveness of low power red and infrared lasers and that of Er:YAG laser, in association with CPP-ACPF cream, on remineralization of white spot lesions. STUDY DESIGN Fifty intact premolars were immersed in a demineralization solution for 10 weeks to induce caries like lesions and then were divided into five groups. In group 1, the teeth were covered w...
متن کاملمروری بر اثر کاربرد ترکیبی تابش لیزر و استفاده از فلوراید در پیشگیری از پوسیدگی
Background and Aims: Despite significant decline in dental caries in recent decades, the disease remains a public health problem especially in developing countries. In recent years combined application of laser and fluoride has been introduced as a new caries-preventive measure. The purpose of the present study was to review the literature on the preventive effect of combined application of ...
متن کاملEffect of Combined Application of Er,Cr:YSGG and Sodium Fluo-ride Varnish in Prevention of Demineralization of Primary Tooth Enamel: an In Vitro Study
Background and Aim: Previous studies revealed improved enamel caries resistance after laser irradiation. Present in vitro study evaluated the effect of Er,Cr:YSGG laser with or without topical fluoride application on microhardness of primary enamel after artificial demineralization. Materials and Methods: In this in vitro study, 35 primary molars with sound surfaces were bisected and randomly ...
متن کامل