Effects of low power red laser on induced-dental caries in rats

Muller, Karin Praia; Rodrigues, Célia Regina Martins Delgado; Núñez, Silvia Cristina; Rocha, Raquel; Jorge, Antônio Olavo Cardoso; Ribeiro, Martha S.

doi:10.1016/j.archoralbio.2006.12.018

Cited by 11 publications

(11 citation statements)

References 33 publications

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“…The average microhardness of the control and laser groups had a similar remineralizing effect, which contradicts other studies that show that low-power lasers create a harder and more resistant surface than the additional calcium compounds or the control group [12,14]. The group with the best microhardness was fluoride, although the rate of application and fluoride content for all groups was the same (22,600 ppm).…”

Section: Discussioncontrasting

confidence: 50%

“…Moreover, the effects are higher when fluoride-or calcium-based compounds are irradiated concurrently [11][12][13][14]17]. Nevertheless, the data show that the mineral content of the laser group was similar to the control.…”

Section: Discussionmentioning

confidence: 40%

“…These lasers absorb water from the hydroxyapatite of tooth tissues and can modify the crystalline structure, acid solubility, and permeability of the tooth surface to increase resistance against demineralization. However, high-power lasers are costly and not readily available in every practice [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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The Effects of Remineralization via Fluoride Versus Low-Level Laser IR810 and Fluoride Agents on the Mineralization and Microhardness of Bovine Dental Enamel

et al. 2018

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Abstract:The objective of this study was to assess the mineralization and microhardness of bovine dental enamel surfaces treated with fluoride, tri-calcium phosphate, and infrared (IR) 810 laser irradiation. The study used 210 bovine incisors, which were divided into six groups (n = 35 in each): Group A: Untreated (control), Group B: Fluoride (Durapath-Colgate), Group C: Fluoride+Tri-calcium phosphate (Clin-Pro White-3 M), Group D: Laser IR 810 (Quantum), Group E: Fluoride+laser, and Group F: Fluoride+tri-calcium phosphate+laser). Mineralization was measured via UV-Vis spectroscopy for phosphorus and via atomic absorption spectroscopy for calcium upon demineralization and remineralization with proven agents. Microhardness (SMH) was measured after enamel remineralization. Mineral loss data showed differences between the groups before and after the mineralizing agents were placed (p < 0.05). Fluoride presented the highest remineralization tendency for both calcium and phosphate, with a Vickers microhardness of 329.8 HV0.1/11 (p < 0.05). It was observed that, if remineralization solution contained fewer minerals, the microhardness surface values were higher (r = −0.268 and −0.208; p < 0.05). This study shows that fluoride has a remineralizing effect compared with calcium triphosphate and laser IR810. This in vitro study imitated the application of different remineralizing agents and showed which one was the most efficient for treating non-cavitated injuries. This can prevent the progression of lesions in patients with white spot lesions.

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Section: Discussioncontrasting

confidence: 50%

Section: Discussionmentioning

confidence: 40%

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The Effects of Remineralization via Fluoride Versus Low-Level Laser IR810 and Fluoride Agents on the Mineralization and Microhardness of Bovine Dental Enamel

et al. 2018

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“…Studies with Nd:YAG 45 and ARF excimer laser 59 showed that after irradiation, the Ca=P ratios were higher when compared with nonirradiated controls; however, these samples were not submitted to cariogenic challenge. However, Muller et al, 60 using a low-power laser, did not find a statistically significant difference in the calculated Ca=P weight (as %) after lasing treatments.…”

Section: Enamel Irradiated With Infrared Laser: Edx Studymentioning

confidence: 99%

“…60 Ideally, a greater fluoride preventive effect is obtained when fluoride is incorporated into the enamel structure through the formation of fluoridated apatite, which is a less soluble, more chemically stable crystal than hydroxyapatite.…”

Section: Enamel Irradiated With Infrared Laser: Edx Studymentioning

confidence: 99%

Dental Enamel Irradiated with Infrared Diode Laser and Photo-Absorbing Cream: Part 2—EDX Study

Sant'Anna

Santos

Soares

et al. 2009

Photomedicine and Laser Surgery

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Objective: The effects of laser-induced compositional changes on the enamel were investigated by energydispersive X-ray fluorescence spectrometry (m-EDX). After cariogenic challenge, we administered treatment of low-level infrared diode laser and a photo-absorbing cream (used to intensify the superficial light absorption). Background Data: Dental caries is considered the most prevalent oral disease. A simple and noninvasive caries preventive regimen is treating tooth enamel with a laser, either alone or in combination with fluoride, which reduces enamel solubility and dissolution rates. High power lasers are still not widely used in private practice. Low-power near-infrared lasers may be an alternative approach. Energy-dispersive m-EDX is a versatile and nondestructive spectroscopic technique that allows for a qualitative and quantitative elemental analysis of inorganic enamel components, such as calcium and phosphorus. Materials and Methods: Twenty-four extracted or exfoliated caries-free deciduous molars were divided into six groups: 1) control group (CTR-no treatment); 2) infrared laser treatment (L) (l ¼ 810 nm, 100 mW=cm 2 , 90 sec, 4.47 J=cm 2 , 9 J); 3) infrared laser irradiation and photo-absorbing agent (CL); 4) photo-absorbing agent alone (C); 5) infrared laser irradiation and fluoridated photo-absorbing agent (FCL); and 6) fluoridated photo-absorbing agent alone (FC). Samples were analyzed using m-EDX after two sets of treatments and pH cycling cariogenic challenges. Results: The CL group showed statistically significant increases in calcium and phosphorus (wt%) compared with the CTR group. The Ca=P ratio was similar in the FCL and CTR groups. There was a significant laser-induced reduction compared with the CTR group, and there was a possible modification of the organic balance content in enamel treated with laser and cream. Conclusion: m-EDX may be able to detect compositional changes in mineral phases of lased enamel under cariogenic challenge. Our results suggest that with a combined laser and photo-absorbing agent (CL) treatment, there was a possible disorganization of organic content in the tooth enamel with hydroxyapatite crystal reordering and reorganization.

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Short-term PTH administration increases dentine apposition and microhardness in mice

Guimarães

Cardoso

Naves

et al. 2012

Archives of Oral Biology

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Effects of low power red laser on induced-dental caries in rats

Cited by 11 publications

References 33 publications

The Effects of Remineralization via Fluoride Versus Low-Level Laser IR810 and Fluoride Agents on the Mineralization and Microhardness of Bovine Dental Enamel

The Effects of Remineralization via Fluoride Versus Low-Level Laser IR810 and Fluoride Agents on the Mineralization and Microhardness of Bovine Dental Enamel

Dental Enamel Irradiated with Infrared Diode Laser and Photo-Absorbing Cream: Part 2—EDX Study

Short-term PTH administration increases dentine apposition and microhardness in mice

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