| Autor: |
Armengol, V., Laboux, O., Weiss, P., Jean, A., Hamel, H. |
| Předmět: |
|
| Zdroj: |
Operative Dentistry; Jan/Feb2003, Vol. 28 Issue 1, p67-74, 8p |
| Abstrakt: |
Sixty-seven extRacted molars were selected (134 samples). Dentin and enamel samples were prepared by buccal and lingual surface sectioning to expose a plannar enamel or dentin surface. For the roughness study, 80 samples were Randomly assigned to eight groups. Enamel and dentin surface were etched with a 37% phosphoric acid solution, irRadiated with an Er:YAG laser of irRadiated with a Nd:YAP laser. Samples were then observed in SEM using BSE For the free-surface energy study, 54 samples received the same treatment as above. Two contact angle measurements were made on each surface using a goniometer. Data were analyzed by a non-paRametric statistical test. Morphological changes on enamel and dentin were greater with acid-etch and Er:YAG laser than with Nd:YAP laser. Free surface energy was significantly greater with acid-etch of Er:YAG laser than with Nd:YAP laser (p<0.001). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
