Effect of Er,Cr:YSGG laser associated with fluoride on the control of enamel erosion progression
| Autor: | V. R. M Silva, Denise Maria Zezell, Taís Scaramucci, Ítallo Emídio Lira Viana, Ana Cecília Correa Aranha, Raquel Marianna Lopes |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Materials science Surface Properties Optical profilometry Lasers Solid-State Citric Acid law.invention Fluorides 03 medical and health sciences Acidulated Phosphate Fluoride chemistry.chemical_compound 0302 clinical medicine law Animals Tooth Erosion Irradiation Dental Enamel General Dentistry Environmental scanning electron microscope Enamel paint Saliva Artificial 030206 dentistry Cell Biology General Medicine Laser Incisor 030104 developmental biology Otorhinolaryngology chemistry Tooth Remineralization visual_art Disease Progression Microscopy Electron Scanning visual_art.visual_art_medium Cattle Citric acid Fluoride Nuclear chemistry |
| Zdroj: | Archives of Oral Biology. 99:156-160 |
| ISSN: | 0003-9969 |
| DOI: | 10.1016/j.archoralbio.2019.01.011 |
| Popis: | Objective To evaluate the effect of Er,Cr:YSGG laser associated or not with acidulated phosphate fluoride (APF) on the control of enamel erosion progression. Design: Enamel slabs (4 mm × 4 mm × 2 mm) from bovine incisors were flattened, polished, and received a tape on their test surfaces, leaving a 4 mm × 1 mm area exposed. Specimens were eroded (10 min in 1% citric acid solution) and randomly assigned into 8 experimental groups (n = 10): Control (no treatment); F (APF gel, 1.23% F, pH 3.6–3.9); Er,Cr:YSGG laser irradiation (P1: 0.25 W, 20 Hz, 2.8 J/cm2, 56 W/cm2); Er,Cr:YSGG laser irradiation (P2: 0.50 W, 20 Hz, 5.7 J/cm2, 1136 W/cm2); Er,Cr:YSGG laser irradiation (P3: 0.75 W, 20 Hz, 8.5 J/cm2, 1704 W/cm2); F + Laser P1; F + Laser P2; F + Laser P3. Specimens were then subjected to erosive cycling (5 min immersion in 0.3% citric acid solution, followed by immersion in artificial saliva for 60 min; 4×/day for 5 days). At the end of cycling, surface loss (SL, in μm) was determined with optical profilometry. Selected specimens were further evaluated by environmental scanning electron microscopy (n = 3). Data were analyzed using Kruskal-Wallis and Tukey tests (α = 0.05). Results: Group F + Laser P2 had the lowest SL value, differing significantly from the control; however, with no significant difference from the other groups. All groups, except F + Laser P2, showed no significant difference in SL when compared with the control. An irregular and rough surface, suggestive of a melting action of laser, was observed on enamel in Laser P2 and F + Laser P2 groups. Conclusions: Association of the Er,Cr:YSGG laser in parameter 2 with fluoride was the only treatment capable of controlling the progression of enamel erosion. |
| Databáze: | OpenAIRE |
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