Laser Conditioning: A Preferred Option Over Conventional Acid Etching for Orthodontic Bonding
| Autor: | Shahul Hameed Faizee, R Piradhiba, NR Krishnaswamy |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Bone decalcification Enamel paint Acid etching Orthodontic bonding chemistry.chemical_element 030206 dentistry Laser law.invention Erbium Demineralization 03 medical and health sciences Chromium 0302 clinical medicine chemistry law visual_art visual_art.visual_art_medium Composite material 030217 neurology & neurosurgery |
| Zdroj: | Journal of Indian Orthodontic Society. 55:33-38 |
| ISSN: | 0974-9098 0301-5742 |
| Popis: | Aim: To evaluate the demineralization resistance and the shear bond strength of enamel surfaces after erbium, chromium: yttrium–scandium–gallium-garnet (Er,Cr:YSGG) laser etching (2 W/15 Hz, 2 W/25 Hz) and to compare them with conventional acid etching for orthodontic bonding. Materials and Methods: A total of 60 extracted human premolars with intact enamel surface were used for this study. Demineralization Resistance was estimated using ion-coupled plasma atomic emission spectrometer (ICP-AES). Shear bond strength was evaluated using Universal Testing Machine—Instron. Results: Statistically significant difference ( P < .001) was found in the concentration of dissolved calcium (Ca) and phosphorus (P), with the highest mean Ca and P in the acid-etched group, followed by 2 W/15 Hz laser-etched group and least with 2 W/25 Hz laser-etched group. Maximum bond strength was found in the acid-etched group (12.06 MPa), followed by the 2 W/25 Hz laser-etched group (9.01 MPa) and 2 W/15 Hz laser-etched group (8.39 MPa). The differences were statistically significant. Conclusions: Laser conditioning of enamel surface revealed significant demineralization resistance with a minimal dissolution of Ca and P ions in the demineralizing solution. Moreover, optimum bond strength was obtained similar to that of acid etching; hence, Er,Cr:YSGG laser conditioning of enamel surface is preferred over the conventional phosphoric acid etching for orthodontic bonding. |
| Databáze: | OpenAIRE |
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