The Rate of Demineralization in the Teeth Prepared by Bur and Er:YAG Laser
| Autor: | Fatemeh Namdar, Afrooz Nakhostin, Masomeh Hasani Tabatabaei, Nasim Chiniforush, Mahdi Abbasi |
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| Rok vydání: | 2018 |
| Předmět: |
Molar
Urology Dermatology Indentation hardness law.invention 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine law Dentin medicine Dentistry (miscellaneous) Orthopedics and Sports Medicine Irradiation Enamel paint business.industry 030206 dentistry Laser Demineralization surgical procedures operative medicine.anatomical_structure Nephrology visual_art visual_art.visual_art_medium Original Article Surgery business Er:YAG laser Biomedical engineering |
| Zdroj: | Journal of Lasers in Medical Sciences. 9:82-86 |
| ISSN: | 2228-6721 2008-9783 |
| DOI: | 10.15171/jlms.2018.17 |
| Popis: | Introduction: The present in vitro study evaluated the recurrence rate of caries following cavity preparations with bur (conventional technique) and irradiation by Erbium:Yttrium- Aluminum-Garnet (Er:YAG) laser through micro hardness test. Methods: A total of 72 human extracted molars were randomly divided into 3 groups and class 5 cavities were prepared on them with 3 different methods: G1) conventional bur, G2) Er:YAG laser irradiation alone and G3) laser irradiation + laser treatment. The specimens were immersed in the artificial caries solution with pH of 2.0 and 5.0 (12 days) and then immersed in re-mineralizing solution with pH of 7.0 (25 days). The specimens were longitudinally sectioned and their Vickers micro hardness was determined. Data were statistically analyzed by means of three-way analysis of variance (ANOVA) and Tukey multiple comparisons tests. Results: The micro hardness of the samples was affected by substrate type (enamel and dentin) and low values were achieved in dentin (P |
| Databáze: | OpenAIRE |
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