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Lima LCDE, Landmayer K, Braga MM, Scaramucci T, Palma-Dibb RG. EFFECT OF LASER IRRADIATION ASSOCIATED WITH FLUORIDE IN DECREASING EROSIVE TOOTH WEAR: A SYSTEMATIC REVIEW WITH A NETWORK META-ANALYSIS . J Evid Based Dent Pract 2024; 24:101990. [PMID: 39174162 DOI: 10.1016/j.jebdp.2024.101990] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 03/03/2024] [Accepted: 03/19/2024] [Indexed: 08/24/2024]
Abstract
OBJECTIVE The present systematic review with a network meta-analysis (NMA) aimed to evaluate the effect of high-power lasers, associated or not with fluoride compounds, to control and prevent Erosive Tooth Wear (ETW). METHODS The review was registered in the PROSPERO (CRD42021242547) and followed the PICO question: P (population): enamel and dentin substrate; I (Intervention): high-power laser irradiation, associated or not with fluoride compounds; C (Control): no-treatment; and O (Outcomes): prevention/control of ETW. The electronic databases PubMed, Scopus, and EMBASE were searched. Two independent reviewers evaluated in vitro and in situ studies. The risk of bias was assessed using the RoBDEMAT tool. The estimated treatment effect derived from direct and indirect comparisons were analyzed and the difference between these effects was calculated based on the data of enamel and dentin surface loss (in μm). RESULTS A total of 179 studies were retrieved and after the exclusion of duplicates, 103 studies had their titles and abstracts evaluated. Thirty-nine studies had their full text analyzed for data extraction (Cohen Kappa = 0.88). For sound enamel, the laser irradiation (L), fluoride application (F) and, the association of treatments (L + F) promoted higher protection than No-Treatment (NT). For eroded enamel, L + F and F did not differ, but both treatments reduced surface loss compared to NT and L. For sound and eroded dentin, treatments with laser increased surface loss. CONCLUSIONS Although a high-power laser has some potential to prevent erosive tooth wear, this effect is not better than that of standard fluoride. The use of laser in the management of dentin erosive wear can be harmful.
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Affiliation(s)
- Leonardo Custódio DE Lima
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil; Department of Dentistry, Federal University of Juiz de Fora, Governador Valadares, Minas Gerais, Brazil
| | - Karin Landmayer
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Mariana Minatel Braga
- Department of Pediatric Dentistry, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Taís Scaramucci
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil.
| | - Regina Guenka Palma-Dibb
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Ribeirão Preto, Brazil
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Yang N, Zhao Y. Study on the effect of crystal changes on acid resistance of erbium laser etched enamel surface. Dent Mater J 2024; 43:200-206. [PMID: 38296510 DOI: 10.4012/dmj.2023-221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
To investigate the mechanism underlying high acid resistance of enamel after erbium laser etching. Forty-five premolars were collected and assigned to three groups. A 4×4×1 mm enamel sample was prepared, the left side was the control side, the right side was the treated side, which was treated with different surface treatments, including 35% phosphoric acid etching, Er:YAG laser etching, and Er,Cr:YSGG laser etching. The hydroxyapatite crystal size on the enamel surface of the samples was observed. The contents of Ca, P, O, F, Cl, C, Mg were detected. The crystallinity of the hydroxyapatite crystal was analyzed. After erbium laser etching, the enamel surface had high hydroxyapatite crystal size, beneficial content of chemical elements and crystallinity. The morphological and composition changes of crystals in the enamel surface after erbium laser etching may be one of the crucial mechanisms underlying the enhancement of acid resistance of enamel after erbium laser etching.
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Affiliation(s)
- Nan Yang
- Department of Stomatology, Xuanwu Hospital, Capital Medical University
| | - Ying Zhao
- Department of Stomatology, Xuanwu Hospital, Capital Medical University
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The effects of combining erbium, chromium: Yttrium-scandium-gallium-garnet laser irradiation with fluoride application in controlling the progression of enamel erosion. Saudi Dent J 2021; 33:1126-1132. [PMID: 34938058 PMCID: PMC8665161 DOI: 10.1016/j.sdentj.2021.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 12/05/2022] Open
Abstract
Fluoride alone increased the microhardness of the enamel surface. Fluoride alone halted the progression of enamel erosion. Laser irradiation before fluoride-induced similar effects as fluoride alone. Laser irradiation alone did not prevent the progression of enamel erosion.
Objective Increasing enamel resistance to acid may be useful for preventing cavitation and could reduce changes in the enamel’s microhardness. Topical fluoride application and laser irradiation promote acid resistance of dental substrates. The aim of the study was to assess the efficacy of erbium, chromium: yttrium-scandium-gallium-garnet laser irradiation in combination with fluoride application to control enamel erosion. Design Sixty human premolar specimens were prepared (N = 60) and were randomly assigned to 5 groups, twelve specimens in each group (n = 12/group) according to surface treatment. The groups were as follows: group 1 (C): control with no treatment; group 2 (F): application of 1.23% acidulated phosphate fluoride gel alone; group 3 (L): laser irradiation alone; group 4 (F+L): acidulated phosphate fluoride gel followed by laser irradiation; group 5 (L+F): laser irradiation followed by acidulated phosphate fluoride gel. All the specimens were eroded 10 min in citric acid. Baseline measurements were performed using a Vickers microhardness tester before surface treatment. Subsequently, all specimens were subjected to a 60 min erosion-remineralization cycle for five days followed by measurements of the final surface microhardness. Statistical comparisons were performed by a one-way analysis of variance and Tukey’s post hoc analysis. Results The control, laser, and fluoride + laser groups showed a statistically significant decrease in microhardness values between baseline and post-erosion measurements (P < 0.05), indicating that these treatments could not prevent erosion progression. However, the fluoride and laser + fluoride groups showed a significant increase in microhardness values compared to baseline. Conclusions Our results suggest that compared to that of the control group, acidulated phosphate fluoride application as well as laser irradiation prior to fluoride application increased enamel surface microhardness and prevented the progression of enamel erosion.
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Hassan M, Bakhurji E, AlSheikh R. Application of Er,Cr:YSGG laser versus photopolymerization after silver diamine fluoride in primary teeth. Sci Rep 2021; 11:20780. [PMID: 34675271 PMCID: PMC8531340 DOI: 10.1038/s41598-021-00204-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/29/2021] [Indexed: 11/21/2022] Open
Abstract
Examine the effect of dental curing light and laser treatments applied after Silver Diamine Fluoride (SDF) on dentin hardness in carious primary molars. This in-vitro study consisted of 30 extracted primary molars with caries extending into dentin without pulpal involvement. The collected teeth were randomly divided into three groups: group 1: received SDF then Sub-ablative low-energy of Er,Cr:YSGG laser, group 2: received SDF followed by application of curing light for 40 s, group 3: had SDF treatment only. In all groups, 38% Ag (NH3)2F SDF was used. Vickers hardness test was performed on sound dentin below carious lesion. Kruskal-Wallis Test was used to determine the mean difference in dentin hardness of the groups at 5% Significance level using SPSS software. Surface hardness of sound dentin below the carious lesion was statistically significantly higher in the laser + SDF group (891.24 ± 37.33 kgf/mm2) versus the two other groups (Light cure + SDF = 266.65 ± 90.81 kgf/mm2 and SDF only = 117.91 ± 19.19 kgf/mm2) with p-value ≤ 0.001. Although Photopolymerization of SDF increases the surface hardness of sound dentin below the carious lesion, applying laser after SDF has the highest surface hardness due to the laser's sub-ablation of dentin.
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Affiliation(s)
- Mohamed Hassan
- Department of Preventive Dental Services, College of Dentistry, King Faisal University, Al-Hasa, Saudi Arabia
| | - Eman Bakhurji
- Department of Preventative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
| | - Rasha AlSheikh
- Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
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Ulusoy NB, Akbay Oba A, Cehreli ZC. Effect of Er,Cr:YSGG Laser on the Prevention of Primary and Permanent Teeth Enamel Demineralization: SEM and EDS Evaluation. PHOTOBIOMODULATION PHOTOMEDICINE AND LASER SURGERY 2021; 38:308-315. [PMID: 32427554 DOI: 10.1089/photob.2019.4772] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Objective: To evaluate in vitro the effect of the erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser on resistance of primary and permanent human enamel to demineralization using water cooling and fluoride coapplication as variable parameters. Methods: Enamel specimens were prepared from extracted primary and permanent teeth (n = 225 each). The specimens were separated into 15 subgroups (n = 15/group) based on laser application at three different power settings (0.25, 0.50, and 0.75 W), laser application with and without water cooling, and application of acidulated phosphate fluoride (APF) gel before laser treatment. Morphological changes were assessed with scanning electron microscopy (SEM), and the specimens' chemical contents were determined with energy-dispersive X-ray spectroscopy. Results: In both the primary and permanent teeth, the highest Ca and P content was observed in the noncooled 0.75 W laser group (p < 0.05), irrespective of APF pretreatment (p > 0.05). The Ca and P content for the noncooled APF +0.75 W laser group was lower than that for the APF group and the noncooled 0.75 W laser group. For both dentitions, the F mass content for the APF+laser groups was significantly higher than laser-only groups (p < 0.05). Under SEM, both the primary and permanent enamel exhibited cracks, craters, and surface roughness without water cooling, consistent with increased power output. Conclusions: Er,Cr:YSGG laser application at 0.75 W without water cooling increased enamel resistance to demineralization. Compared with topical APF application, Er,Cr:YSGG laser application barely improved enamel resistance against demineralization, and coapplication did not result in a synergistic effect.
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Affiliation(s)
- Nur Burcu Ulusoy
- Department of Pediatric Dentistry, Kirikkale University, Kirikkale, Turkey
| | - Aylin Akbay Oba
- Department of Pediatric Dentistry, Kirikkale University, Kirikkale, Turkey
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Erkmen Almaz M, Ulusoy NB, Akbay Oba A, Erdem Ü, Doğan M. Thermal, morphological, and spectral changes after Er, Cr:YSGG laser irradiation at low fluences on primary teeth for caries prevention. Microsc Res Tech 2020; 84:150-159. [PMID: 33219723 DOI: 10.1002/jemt.23637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/06/2020] [Accepted: 10/22/2020] [Indexed: 11/10/2022]
Abstract
The aim of this study was to determine the temperature increase in the pulp chamber and possible thermal effects on molecular structure of primary teeth during the irradiation with Er,Cr:YSGG laser. Primary central incisors were divided into three groups (n = 20). Labial surfaces in each group were irradiated by Er,Cr:YSGG laser within different power and frequencies as following groups: I: 0.25 W, 20 Hz, II: 0.50 W, 20 Hz, III: 0.75 W, 20 Hz. A thermocouple was placed inside the pulp chamber so that the temperature increments were recorded during the enamel irradiation. Morphological changes of enamel surfaces were experimentally evaluated by SEM. Fourier-transform infrared spectroscopy and RAMAN analyses were carried out to determine the differentiations in the molecular structure. The experimental results obtained were analyzed statistically by means of one-way analysis of variance. Statistically significant differences were detected between groups (p < .05). Group III exhibited the highest values for the temperature parameters. Besides, the conical craters, cracks, and formation of ablation areas were observed for all the groups. Also, it was obtained that the hydroxyapatite lost the hydroxyl ions due to the thermal effect of the laser. Temperature rise throughout the Er,Cr:YSGG laser irradiation for prevention of primary enamel demineralization presented a positive correlation with the laser output power level. The formations of adverse morphological and spectral changes were detected on the surface of teeth after the laser application. On this basis, the Er,Cr:YSGG laser applications should be treated with much more caution considering enamel surface and pulpal tissues in primary teeth.
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Affiliation(s)
- Merve Erkmen Almaz
- Department of Pediatric Dentistry, Faculty of Dentistry, Kırıkkale University, Kırıkkale, Turkey
| | | | - Aylin Akbay Oba
- Department of Pediatric Dentistry, Faculty of Dentistry, Kırıkkale University, Kırıkkale, Turkey
| | - Ümit Erdem
- Scientific and Technological Research Application Center, Kırıkkale University, Kırıkkale, Turkey
| | - Mustafa Doğan
- Scientific and Technological Research Application Center, Kırıkkale University, Kırıkkale, Turkey
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Artificial Caries Resistance in Enamel after Topical Fluoride Treatment and 445 nm Laser Irradiation. BIOMED RESEARCH INTERNATIONAL 2019; 2019:9101642. [PMID: 31781651 PMCID: PMC6874945 DOI: 10.1155/2019/9101642] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/26/2019] [Accepted: 10/18/2019] [Indexed: 11/24/2022]
Abstract
Objective This in vitro study is aimed at investigating the caries preventive effectiveness of 445 nm diode laser in combination with topical fluoridation. Materials and methods A total of 30 caries-free bovine teeth were used in this study. Eighteen teeth were covered with nail varnish except four windows on the labial surface. The windows were assigned to no treatment/control (C), laser (L) (0.3 W, 60 s, and 90 J/cm2), fluoride (F), and fluoride followed by laser (FL) treatment groups. Artificial caries lesions were created, and the teeth were sectioned and investigated under polarized light microscopy for quantitative measurement of the resulted lesion depth. Ten teeth were used for surface temperature measurement and two teeth for scanning electron microscopy (SEM). Extra twelve human molars were used for the intrapulpal temperature measurement. The absorbance of fluoride at 445 nm was measured. Results The means of lesion depth for the C, L, F, and FL groups were 123.48 (±21.93), 112.33 (±20.42), 99.58 (±30.68), and 89.03 (±30.38) μm, respectively. The pairwise differences of the L, F, and FL groups compared with the C group were significant (p < 0.05). The differences between groups were tested: FL versus L p=0.02, F versus L p=0.16, and FL versus F p=0.91, and the difference of the F versus FL was not significant (p=0.91). Temperature increment at the enamel surface and pulp roof were ∆T = 16.67 (±4.11) and 2.12 (±0.66)°C, respectively. The topical fluoride absorbance at 445 nm is five orders higher than that at 810 nm. SEM shows that after laser irradiation the enamel surface was intact and without thermal damage. Conclusions The 445 nm laser irradiation may be useful for caries prevention, and its effectiveness is lower than those previously achieved using the argon ion laser.
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Al-Maliky MA, Frentzen M, Meister J. Laser-assisted prevention of enamel caries: a 10-year review of the literature. Lasers Med Sci 2019; 35:13-30. [PMID: 31399861 DOI: 10.1007/s10103-019-02859-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 08/01/2019] [Indexed: 01/13/2023]
Abstract
Since the invention of lasers in dentistry, investigations in caries prevention by the use of laser radiation have been proposed. There are several mechanisms stated for this purpose such as photothermal and/or photochemical interaction processes with the enamel. Alone or in conjugation with topical fluoride application, this treatment modality may improve enamel acid resistance in high-caries-risk populations. Data collection was done by searching the keywords caries, prevention, and laser in PubMed, Embase, Web of Science, Cochrane Library, and Google Scholar. Lasing protocols of the collected literature and their effectiveness as well as examination methods used to verify treatment outcomes have been evaluated. One hundred eighteen publications were found for the last 10 years. The wavelengths investigated for caries prevention are mainly located in the near and the mid-infrared spectral range. In the evaluated period of time, investigations using CO2; Er:YAG; Er,Cr:YSGG; Er:YLF; fundamental, second, and third harmonic generations of Nd:YAG; diodes; and argon ion lasers were found in the databases. Accounting for 39% of the literature, CO2 laser was the most examined system for this purpose. Reviewing the literature in this narrative review showed that all laser systems presented a positive effect in varying degrees. Laser irradiation could be an alternative or synergistic to topical fluoridation for enamel caries prevention with longer lasting effect. Further research should be focused on selecting proper laser settings to avoid damage to enamel and developing effective evidence-based clinical protocols.
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Affiliation(s)
- Mohammed Abbood Al-Maliky
- Department of Periodontology, Operative and Preventive Dentistry, Dental Faculty, University of Bonn, Welschnonnenstrasse 17, 53111, Bonn, Germany. .,Center of Applied Medical Laser Research and Biomedical Optics (AMLaReBO), University of Bonn, Bonn, Germany. .,Department of Biomedical Applications, Institute of Laser for Postgraduate Studies, University of Baghdad, Baghdad, Iraq.
| | - Matthias Frentzen
- Department of Periodontology, Operative and Preventive Dentistry, Dental Faculty, University of Bonn, Welschnonnenstrasse 17, 53111, Bonn, Germany
| | - Jörg Meister
- Department of Periodontology, Operative and Preventive Dentistry, Dental Faculty, University of Bonn, Welschnonnenstrasse 17, 53111, Bonn, Germany.,Center of Applied Medical Laser Research and Biomedical Optics (AMLaReBO), University of Bonn, Bonn, Germany
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Bezerra SJC, Trevisan LR, Viana IEL, Lopes RM, Pereira DL, Aranha ACC, Scaramucci T. Er,Cr:YSGG laser associated with acidulated phosphate fluoride gel (1.23% F) for prevention and control of dentin erosion progression. Lasers Med Sci 2018; 34:449-455. [PMID: 30215185 DOI: 10.1007/s10103-018-2609-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 08/03/2018] [Indexed: 10/28/2022]
Abstract
To evaluate the effect of Er,Cr:YSGG laser, associated with fluoride application, on the prevention/control of dentin erosion. Dentin slabs were embedded in acrylic resin, flattened, and polished. Half of the specimens were previously eroded (10 min immersion in 1% citric acid solution) and half were kept sound. The specimens (n = 10 each substrate) were randomly allocated into the experimental groups, according to the following treatments: control (no treatment); APF gel (1.23% F, 1 min); Er,Cr:YSGG laser irradiation (P1: 0.25 W, 20 Hz, 2.8 J/cm2, tip S75, beam diameter of 750 μm, 1 mm away from the surface); Er,Cr:YSGG laser irradiation (P2: 0.50 W, 20 Hz, 5.7 J/cm2, tip S75, beam diameter of 750 μm, 1 mm away from the surface); APF gel + Er,Cr:YSGG laser P1 and; APF gel + Er,Cr:YSGG laser P2. Afterwards, the specimens underwent an erosion-remineralization cycling, consisting of a 5-min immersion into 0.3% citric acid, followed by 60-min exposure to artificial saliva. This procedure was repeated 4×/day, for 5 days. Surface loss (SL, in μm) was determined by optical profilometry. Specimens from each group were analyzed by environmental scanning electron microscopy (n = 3). Data were statistically analyzed (α = 0.05). For the eroded specimens, APF gel presented the lowest SL, being different from the control. For the sound specimens, none of the groups differed from the control, except for Er,Cr:YSGG laser P2, which presented the highest SL. When substrates were compared, only the eroded specimens of the control and APF + Er,Cr:YSGG laser P1 Groups showed higher SL. Selective structure removal was observed for the laser-treated groups. None of the Er,Cr:YSGG laser parameters were effective in the prevention/control dentin erosion. The laser was also unable to enhance the protection of fluoride against dentin erosion.
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Affiliation(s)
- S J C Bezerra
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil
| | - L R Trevisan
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil
| | - I E L Viana
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil
| | - R M Lopes
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil
| | - D L Pereira
- Institute of Energetic and Nuclear Research, IPEN/CNEN/SP, Av. Prof. Lineu Prestes 2242, São Paulo, SP, 05508-000, Brazil
| | - A C C Aranha
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil.,Special Laboratory of Lasers in Dentistry (LELO), Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil
| | - Taís Scaramucci
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, Av. Prof. Lineu Prestes 2227, São Paulo, SP, 05508-000, Brazil.
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de Oliveira RM, de Souza VM, Esteves CM, de Oliveira Lima-Arsati YB, Cassoni A, Rodrigues JA, Brugnera Junior A. Er,Cr:YSGG Laser Energy Delivery: Pulse and Power Effects on Enamel Surface and Erosive Resistance. Photomed Laser Surg 2018; 35:639-646. [PMID: 29099682 DOI: 10.1089/pho.2017.4347] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND High power lasers have been suggested as a useful tool for dental caries and erosion prevention due to the increase of enamel acid resistance. OBJECTIVE to evaluate the effect of Er,Cr:YSGG (erbium,chromium:yttrium, scandium, gallium, garnet) laser irradiation pulse frequency and power on enamel surface and acid erosion resistance. METHODS By combining pulse frequency (5-75 Hz) and power settings (0.10-1.00 W), 20 irradiated groups and one nonirradiated control group were tested. A total of 63 bovine enamel blocks (n = 3/group) were prepared for surface hardness and roughness evaluation, performed in three phases: baseline, after irradiation, and after erosive challenge. Enamel blocks were irradiated with Er,Cr:YSGG laser with MZ8 tip (iPlus; Waterlase, Biolase, CA) for 30 sec according to experimental group and submitted. Erosive challenge consisted of four cycles alternating immersion in 0.01 M HCl (5 mL/mm2; 2 min; at 37°C) and immersion in artificial saliva for 3 h. Analysis of variance (three-way ANOVA), Tukey's test, and Pearson correlation were performed for the statistical analysis (p < 0.05). RESULTS After irradiation, groups irradiated with pulse frequency of 10 and 15 Hz showed a decrease in surface hardness. After erosive challenge, 5 and 75 W groups showed increase in surface hardness; 0.25, 0.5, 0.75, and 1 W groups showed minor alterations in surface roughness. CONCLUSIONS the irradiation of Er,Cr:YSGG laser with different parameters of power and pulse frequency settings may alter enamel surface and erosive resistance differently. Pulse frequency of 30 Hz and power of 0.50 W was considered the best parameter to prevent enamel acid erosion.
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Affiliation(s)
- Renan Mota de Oliveira
- 1 Division of Dental Research and Graduate Studies, Department of Restorative Dentistry, Guarulhos University , Guarulhos, Brazil
| | - Vinicius Matsuzaki de Souza
- 1 Division of Dental Research and Graduate Studies, Department of Restorative Dentistry, Guarulhos University , Guarulhos, Brazil
| | - Camila Machado Esteves
- 1 Division of Dental Research and Graduate Studies, Department of Restorative Dentistry, Guarulhos University , Guarulhos, Brazil
| | | | - Alessandra Cassoni
- 1 Division of Dental Research and Graduate Studies, Department of Restorative Dentistry, Guarulhos University , Guarulhos, Brazil
| | - José Augusto Rodrigues
- 1 Division of Dental Research and Graduate Studies, Department of Restorative Dentistry, Guarulhos University , Guarulhos, Brazil
| | - Aldo Brugnera Junior
- 3 Basic Optics and Applied to Life Sciences, The National Institute of Science and Technology-INCT , São Paulo, Brazil
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Scatolin RS, Colucci V, Lepri TP, Alexandria AKD, Maia LC, Galo R, Borsatto MC, Corona SAM. Non-contact profilometry of eroded and abraded enamel irradiated with an Er:YAG laser. J Appl Oral Sci 2018; 26:e20170029. [PMID: 29742259 PMCID: PMC5933827 DOI: 10.1590/1678-7757-2017-0029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 09/15/2017] [Indexed: 11/21/2022] Open
Abstract
Literature has reported positive results regarding the use of lasers in the control of erosive lesions; however, evaluating whether they are effective in the control of the progression of erosive/abrasive lesions is important.
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Affiliation(s)
- Renata Siqueira Scatolin
- Departamento de Odontologia Restauradora, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Vivian Colucci
- Departamento de Odontologia, Universidade de Ribeirão Preto, Ribeirão Preto, São Paulo, Brasil
| | - Taísa Penazzo Lepri
- Departamento de Odontologia Restauradora, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Adílis Kalina de Alexandria
- Departamento de Odontopediatria e Ortodontia, Faculdade de Odontologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Lucianne Cople Maia
- Departamento de Odontopediatria e Ortodontia, Faculdade de Odontologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Rodrigo Galo
- Departamento de Odontologia, Universidade do Vale do Jequitinhonha e Mucuri, Diamantina, Minas Gerais, Brasil
| | - Maria Cristina Borsatto
- Departamento de Clínica Infantil, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Silmara Aparecida Milori Corona
- Departamento de Odontologia Restauradora, Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
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Pereira DL, Freitas AZ, Bachmann L, Benetti C, Zezell DM, Ana PA. Variation on Molecular Structure, Crystallinity, and Optical Properties of Dentin Due to Nd:YAG Laser and Fluoride Aimed at Tooth Erosion Prevention. Int J Mol Sci 2018; 19:ijms19020433. [PMID: 29389868 PMCID: PMC5855655 DOI: 10.3390/ijms19020433] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 01/25/2018] [Accepted: 01/26/2018] [Indexed: 11/16/2022] Open
Abstract
This in vitro study evaluated the compositional, crystalline, and morphological effects promoted by Nd:YAG laser on root dentin, and verified the effects of laser and topical acidulated phosphate fluoride application (APF-gel) on dentin erosion. 180 bovine dentin slabs were randomized into 4 groups (n = 45): G1–untreated, G2–APF-gel (1.23% F−, 4 min), G3–Nd:YAG (1064 nm, 84.9 J/cm2, 10 Hz), and G4–APF-gel application followed by Nd:YAG laser irradiation. The compositional, crystalline, and morphological effects promoted by treatments were investigated on five samples of each experimental group. The other samples were submitted to a 5-day, 10-day, or 15-day erosive and abrasive demineralization and remineralization cycling in order to create erosion lesions. The area and depth of lesions, as well as the optical attenuation coefficient, were assessed, and all data were statistically analysed (p < 0.05). Nd:YAG laser promoted the reduction of carbonate, the formation of tetracalcium phosphate, as well as the melting and recrystallization of the dentin surface. Laser significantly decreased the area and depth of erosion lesions and altered the optical attenuation coefficient when compared to untreated and APF-gel groups, but the association of APF-gel and laser did not promote an additional effect. Nd:YAG laser irradiation can be a promissory treatment to prevent dentin erosion and the abrasion process.
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Affiliation(s)
- Daísa L Pereira
- Center for Engineering, Modeling and Applied Social Sciences, Universidade Federal do ABC, Sao Bernardo do Campo, SP 09606-045, Brazil.
- Center for Lasers and Applications, Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Sao Paulo, SP 05508-000, Brazil.
| | - Anderson Z Freitas
- Center for Lasers and Applications, Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Sao Paulo, SP 05508-000, Brazil.
| | - Luciano Bachmann
- Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de Sao Paulo, Ribeirao Preto, SP 14040-900, Brazil.
| | - Carolina Benetti
- Center for Engineering, Modeling and Applied Social Sciences, Universidade Federal do ABC, Sao Bernardo do Campo, SP 09606-045, Brazil.
| | - Denise M Zezell
- Center for Lasers and Applications, Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Sao Paulo, SP 05508-000, Brazil.
| | - Patricia A Ana
- Center for Engineering, Modeling and Applied Social Sciences, Universidade Federal do ABC, Sao Bernardo do Campo, SP 09606-045, Brazil.
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Ramalho KM, Hsu CYS, de Freitas PM, Aranha ACC, Esteves-Oliveira M, Rocha RG, de Paula Eduardo C. Erbium Lasers for the Prevention of Enamel and Dentin Demineralization: A Literature Review. Photomed Laser Surg 2015; 33:301-19. [DOI: 10.1089/pho.2014.3874] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Karen Müller Ramalho
- Department of Stomatology, School of Dentistry of the University of São Paulo (USP) Prof. São Paulo, SP, Brazil
| | - Chin-ying Stephen Hsu
- Department of Dentistry, Faculty of Dentistry, National University of Singapore (NUS), Singapore
| | - Patrícia Moreira de Freitas
- Department of Restorative Dentistry, School of Dentistry of the University of São Paulo (USP), São Paulo, SP, Brazil
| | - Ana Cecília Correa Aranha
- Department of Restorative Dentistry, School of Dentistry of the University of São Paulo (USP), São Paulo, SP, Brazil
| | - Marcella Esteves-Oliveira
- Department of Operative Dentistry, Periodontology and Preventive Dentistry, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Rodney Garcia Rocha
- Department of Stomatology, School of Dentistry of the University of São Paulo (USP) Prof. São Paulo, SP, Brazil
| | - Carlos de Paula Eduardo
- Department of Restorative Dentistry, School of Dentistry of the University of São Paulo (USP), São Paulo, SP, Brazil
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