Effect of a pulsed CO2 laser and fluoride on the prevention of enamel and dentine erosion

Steiner‐Oliveira, Carolina; Nobre‐dos‐Santos, Marinês; Zero, Domenick T.; Eckert, George J.; Hara, Anderson T.

doi:10.1016/j.archoralbio.2009.11.010

Cited by 81 publications

(89 citation statements)

References 28 publications

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“…25 Streptococcus mutans (Clarke, ATCC ® 35668TM Manassas, Virginia, USA) was chosen to grow biofilms on teeth and demineralize enamel. Culture medium was prepared by adding isolated S. mutans in 5 mL of tryptic soy agar (TSB) with 0.5 McFarland turbidity to 80 mL of sterile brain-heart solution containing 5% sucrose.…”

Section: Group 5 (Laser Through Fluoride Varnish)mentioning

confidence: 99%

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Effect of CO2 Laser and Fluoride Varnish Application on Microhardness of Enamel Surface Around Orthodontic Brackets

et al. 2017

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IntroductionOrthodontic treatment has many advantages such as esthetic improvement, function and self-estimation enhancement. 1Orthodontic appliances make oral hygiene more difficult and increase plaque accumulation. After installing fix orthodontic appliances in the mouth, Streptococcus mutans and Lactobacillus species increase. These bacteria release organic acid that causes dissolution of ions of calcium and phosphate from the enamel surface, which can lead to white spot lesions and this process can occur in 4 weeks.2 White spot lesions are defined as enamel decalcification due to subsurface mineral loss; while 10 to 30 µm of enamel surface remains intact. 3,4 The opaque appearance of the lesion is due to variations in light scattering of decalcified porous enamel. Years after orthodontic treatment, white spot lesions may develop into esthetic problems, because demineralized enamel may absorb colors from drinks and foods. 5,6 When the lesion progresses, remineralization gets tough and sometimes impossible 5,7 ; hence, it is important to prevent the formation of these lesions. Øgaard reported that 5 years after treatment, white spot lesions were more Orthodontic treatment has many advantages such as esthetic improvement and self-esteem enhancement; yet it has some disadvantages such as increasing the risk of formation of white spot lesions, because it makes oral hygiene more difficult. It is rational to implement procedures to prevent these lesions. The present study was aimed to assess the effect of CO 2 laser and fluoride varnish on the surface of the enamel surface microhardness around the orthodontic braces. Methods: Eighty extracted premolar teeth were selected, scaled, polished with nonfluoridated pumic and metal brackets were bonded to them. Then, they were randomly allocated to 5 groups: control (neither fluoride nor laser is used on enamel surfaces), fluoride (4 minutes fluoride varnish treatment of the enamel surfaces), CO 2 laser (10.6 µm CO 2 laser irradiation of the teeth), laserfluoride (fluoride application after laser irradiation) and fluoride-laser (fluoride was applied and then teeth were irradiated with laser). After surface treatment around brackets on enamel, the samples were stored in 0.1% thymol for less than 5 days and then they were exposed to a 10-day microbiological caries model. Microhardness values of enamel were evaluated with Vickers test. One sample of each group (5 teeth from 80 samples) was prepared for SEM (scanning electron microscopy) and the data from 75 remaining teeth were analyzed with analysis of variance (ANOVA) and chi-square tests (α = 0.05). Results:Microhardness mean values from high to low were as follow: fluoride-laser, laser-fluoride, laser, fluoride and control. Microhardness in fluoride-laser group was significantly higher compared with that of the control group. Distribution adhesive remnant index (ARI) scores were significantly different between groups and most of bond failures occurred at the enamel-adhesive interface in groups 2 to 5 and at the adhesive-b...

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Section: Group 5 (Laser Through Fluoride Varnish)mentioning

confidence: 99%

“…The continuation of the process was 10 days. 25 Surface microhardness of the aforementioned teeth were compared to 10 non-exposed control teeth by surface microhardness test. The root of the teeth was cut 1mm below CEJ and the crowns were placed in self-cured acrylic resin (Figure 2).…”

Section: Group 5 (Laser Through Fluoride Varnish)mentioning

confidence: 99%

Effect of CO2 Laser and Fluoride Varnish Application on Microhardness of Enamel Surface Around Orthodontic Brackets

et al. 2017

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“…6,7 However, the data are conflicting regarding effective protection against erosion and abrasion. The application of high-power lasers, such as Nd:YAG, CO 2 , erbium-doped yttrium aluminum garnet, [8][9][10] in an attempt to increase the enamel resistance against demineralization, has also been investigated. 11 Studies reported…”

Section: 5005/jp-journals-10024-2140mentioning

confidence: 99%

“…The proportion used was 10 mL per specimen of citric acid in a total volume of 1600 mL. 9 After each demineralization, the samples were simultaneously removed from the acid and then transferred to another plastic container containing 1600 mL of new artificial saliva under stirring for 1 hour, avoiding the precipitation of artificial saliva during the process. The artificial saliva formulation applied was proposed by Gohring et al 28 at pH 7.0.…”

Section: Erosive and Abrasive Challengesmentioning

confidence: 99%

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Protective Effect of Adhesive Systems associated with Neodymium-doped Yttrium Aluminum Garnet Laser on Enamel Erosive/Abrasive Wear

Crastechini¹,

Borges²,

Becker³

et al. 2017

The Journal of Contemporary Dental Practice

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Aim: This study evaluated the efficacy of self-etching adhesive systems associated or not associated with the neodymiumdoped yttrium aluminum garnet (Nd:YAG) laser on the protection against enamel erosive/abrasive wear. Materials and methods:Bovine enamel specimens were demineralized with 0.3% citric acid (5 minutes). The samples were randomly assigned to eight groups (n = 20): SB -Single Bond Universal (3M/ESPE); SB+L -Single Bond Universal + laser (80 mJ/10 Hz); FB -Futurabond U (Voco); FB+L -Futurabond U + laser; GEN -G-aenial bond (GC); GEN+L -G-aenial bond + laser; L -laser irradiation; and C -no treatment.The laser was applied before light curing. The samples were subjected to erosive/abrasive challenges (0.3% citric acid -2 minutes and tooth brushing four times daily for 5 days). Enamel surface loss was recovered profilometrically by comparison of baseline and final profiles. The adhesive layer thickness, retention percentage of the protective layer, and microhardness of cured adhesive were measured. Data were analyzed using one-way analysis of variance and Tukey's test (5%).Results: There were significant differences for all parameters Conclusion:The application of Futurabond U and G-aenial bond on enamel surface, as well as the Nd:YAG laser irradiation alone, was able to reduce the enamel wear. The use of laser after the adhesive systems did not improve their efficacy.Clinical significance: Erosive/abrasive wear is a prevalent condition in clinical practice affecting many patients. The association of adhesive systems and Nd:YAG laser is of considerable clinical interest because it assesses new treatments to reduce the erosive/abrasive wear that would help dentists in clinical treatment decisions to reduce enamel wear and achieve a successful treatment.

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Preventive and Management Strategies Against Toothwear

Khan¹,

Young²

2011

Toothwear: The ABC of the Worn Dentition

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Effect of a pulsed CO2 laser and fluoride on the prevention of enamel and dentine erosion

Cited by 81 publications

References 28 publications

Effect of CO2 Laser and Fluoride Varnish Application on Microhardness of Enamel Surface Around Orthodontic Brackets

Effect of CO2 Laser and Fluoride Varnish Application on Microhardness of Enamel Surface Around Orthodontic Brackets

Protective Effect of Adhesive Systems associated with Neodymium-doped Yttrium Aluminum Garnet Laser on Enamel Erosive/Abrasive Wear

Preventive and Management Strategies Against Toothwear

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