Diode laser irradiation and fluoride uptake in human teeth

Vitale, Marina Consuelo; Zaffe, Davide; Botticell, A. R.; Caprioglio, C

doi:10.1007/bf03262785

Cited by 28 publications

(21 citation statements)

References 25 publications

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“…As described above, this method enhances the absorption of the laser beam on the tissue surface, changing its chemical and morphological structure, and increasing its acid resistance (10,11,22,23). Previous studies revealed that diode laser increases fluoride uptake when enamel is irradiated in the presence of a fluoride compound, and they also stated that enamel must be irradiated in the presence of a pigmented coating substance to increase the acid resistance of enamel (10,11). According to this, the pigmented 5% NaF varnish used here acted as a photo-absorber for the diode laser photons, generating photothermal effects in enamel and changing the morphology of the enamel and, therefore, its roughness.…”

Section: Discussionmentioning

confidence: 99%

“…Studies have demonstrated that a combined fluoridelaser treatment makes enamel more resistant to acid than either laser treatment or fluoride treatment alone (1,3,(8)(9)(10)(11)(12)(13). The reason for that effect is that subablative low-energy laser irradiation and fluoride treatment may instantaneously transform enamel hydroxyapatite into fluoridated hydroxyapatite, reducing enamel solubility and preventing enamel demineralization (3).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Surface Roughness and Bacterial Adhesion on Tooth Enamel Irradiated With High Intensity Lasers

et al. 2017

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The aim was to evaluate the surface roughness and bacterial adhesion on enamel irradiated with high intensity lasers, associated or not to a fluoride varnish. Eighty fragments of bovine enamel were equally divided in 8 groups (n=10). Group 1 was not treated and Group 2 received only a 5% fluoride varnish application. The other groups were irradiated with an Er:Cr:YSGG (8.92 J/cm 2 ), an Nd:YAG (84.9 J/cm 2 ) and a diode laser (199.04 J/cm 2 ), associated or not to a 5% fluoride varnish. The surface roughness was measured before and after treatments. Afterward, all samples were incubated in a suspension of S. mutans at 37 °C for 24 h. The colony-forming units (CFU) were counted by a stereoscope and the results were expressed in CFU/mm 2 . One-way ANOVA and the Tukey´s test compared the roughness data and the Student´s test compared the results obtained in the bacterial adhesion test (α=5%). The results showed that the irradiated samples without varnish presented the same roughness and the same bacterial adhesion that the non-irradiated samples. However, samples irradiated in the presence of fluoride varnish showed higher surface roughness and higher bacterial adhesion than the non-irradiated samples and those irradiated without varnish. Presence of pigments in the varnish increased the lasers' action on the enamel surface, which produced ablation in this hard tissue and significantly increased its surface roughness. For this reason, the enamel's susceptibility to bacterial adhesion was higher when the irradiation of the samples was made in presence of fluoride varnish.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Surface Roughness and Bacterial Adhesion on Tooth Enamel Irradiated With High Intensity Lasers

et al. 2017

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“…-Formation of enamel white spot lesions Acid resistant varnish (Nail polish, Barielle, NY, USA) was painted all over the labial surface of the crowns except for a single window of 3 mm X 3 mm at the cervical 1/3 of the crown (9). After complete setting of the nail varnish all specimens were suspended in 20 ml of acidified buffered demineralizing solution for 48 h at 37 °C.…”

Section: -Selected Materialsmentioning

confidence: 99%

Evaluation of diode laser application on chemical analysis and surface microhardness of white spots enamel lesions with two remineralizing agents

2020

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Background: To investigate the effect of diode laser application and two commercial remineralizing agents on the remineralization and surface microhardness of white spot enamel lesions. Material and Methods: Sixty specimens were prepared then equally divided into six groups (n=10/group), according to the diode laser and the two commercial remineralizing agents applied to demineralized enamel surfaces (APF gel and sodium fluoride NaF mousse) with or without diode Laser application as follows; Group A; control, Group B; diode Laser application, Group C; APF gel application, Group D; NaF mousse application, Group E; APF gel application + diode Laser, Group F; NaF mousse application+ diode Laser. Then the teeth were investigated for their Ca, P & F ions content and surface microhardness. One-way ANOVA followed by Tukey's (HSD) post hoc test were used for statistical analysis. Results: Ca ion wt% showed no statistically significant difference between tested groups, with the highest mean value recorded with Group C. P ion wt%, showed a statistically significant difference between Groups A and C, and the highest mean value was recorded for Group A. The highest F ion wt% was recorded for Group C, while the lowest was recorded for both A and B groups. The highest significant microhardness mean values was recorded for Group E, while the lowest was recorded for Group A. Conclusions: diode Laser treatment of the demineralized enamel surface had a positive influence on the chemistry and surface microhardness and it may represent a promising adjunct for enamel surface remineralization.

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“…It is believed that various types of lasers under appropriate irradiation parameters can cause a number of structural and physicochemical changes that offer cariostatic features. Some of these changes involve purifying the enamel hydroxyapatite via decreasing carbonate and crystalline water, 27,28 reducing the enamel permeability via changing the enamel surface morphology to a melted and resolidified one, 29 increasing the fluoride deposition on enamel surfaces, 15 and inducing the formation of fluorapatite which is more resistant to acid demineralization than apatite with carbonate or hydroxyl ions. 30,31 There are hardly any studies on the effects of the diode laser on the dental structure, especially using enamel microhardness.…”

Section: Discussionmentioning

confidence: 99%

“…12,13 Some studies have investigated laser-fluoride combination treatment to verify whether the laser could enhance the effect of fluoride on the enamel structure and increase the resistance of the dental structure against acid demineralization. [14][15][16][17] Among various lasers, semiconductor diode lasers with several positive aspects, such as the small size, low cost, and ease of use in the oral cavity, have become quite popular in clinical practice. 18 However, few reports are found on the caries-preventive effect of diode lasers, with or without fluoride, on the dental enamel, particularly deciduous teeth.…”

Section: Introductionmentioning

confidence: 99%

Effects of Laser and Fluoride on the Prevention of Enamel Demineralization: An In Vitro Study

et al. 2018

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Introduction: Investigations have demonstrated that fluoride is an essential element in preventive dentistry. However, there are still controversies about the preventive effects of various kinds of laser. The aim of this study was to examine the effect of diode laser irradiation (810 nm) with or without fluoride therapy in the prevention of deciduous enamel demineralization. Methods: Sixty deciduous molar crowns were randomly assigned to 6 groups: C: received no treatment; F: fluoride varnish application; 2L: 2 times diode laser irradiation; 4L: 4 times diode laser irradiation; F2L: 2 times laser irradiation over fluoride varnish; F4L: 4 times laser irradiation over fluoride varnish. Teeth in all groups were subjected to a pH-cycling process to produce artificial caries-like lesions. Results: The analysis of variance (ANOVA) of microhardness values indicated a significant great effect for laser, fluoride, and the interaction of laser-fluoride on reducing the final microhardness value (P < 0.001). However, the 2L group was an exception. Despite the 4L group, it did not show a significant prevention of enamel microhardness loss (P = 0.125). These 2 groups exhibited different effects in the absence of fluoride (P 2L-4L = 0.05) while in the presence of the fluoride varnish, no statistically significant difference was observed between them (P F2L-F4L = 0.257). Moreover, no statistically significant difference was observed between the laser-fluoride combination group and the fluoride group (P F2L-F = 0.133, P F4L-F = 0.926). Conclusion: Our results suggest that fluoride varnish, diode laser, and their combination decrease the loss of the enamel microhardness value and potentially prevent deciduous enamel demineralization. However, the combination of laser and fluoride was not more effective than fluoride.

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Diode laser irradiation and fluoride uptake in human teeth

Abstract: There is an enhanced capability of lasers to increase fluoride uptake of enamel and providing protection to enamel surface from acid attack.

Cited by 28 publications

References 25 publications

Evaluation of Surface Roughness and Bacterial Adhesion on Tooth Enamel Irradiated With High Intensity Lasers

Evaluation of Surface Roughness and Bacterial Adhesion on Tooth Enamel Irradiated With High Intensity Lasers

Evaluation of diode laser application on chemical analysis and surface microhardness of white spots enamel lesions with two remineralizing agents

Effects of Laser and Fluoride on the Prevention of Enamel Demineralization: An In Vitro Study

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