Apsari, Retna and Bidin, Noriah and Aminatun, - and Suhariningsih, - and Hartati, Sri and Yuliati, Anita and Yasin, Moh and Harun, Sulaiman Wadi (2011) Effect of Q-switched pulses exposure on morphology, hydroxyapatite composition, and microhardness properties of human enamel. Journal of Laser Applications, 23 (3). 032006. ISSN 1042-346X, DOI https://doi.org/10.2351/1.3597832.
Full text not available from this repository.Abstract
Ablation of healthy human enamel is demonstrated using a 8 ns pulses at wavelength of 1064 nm and 10Hz repetition rate from a Q -switched Nd:YAG laser. The ablation result shows that an enhanced structuring quality in comparison with non- Q -switched pulse exposure. The material removal remains localized in the area of the laser spot with no signs of collateral damage and cracks observed. As a comparison, exposure to longer pulses of 120 μs from non- Q -switched Nd:YAG laser increases the composition of hydroxyapatite as well as microhardness property of enamel, which produces a side effect of surface dehydration and crack. This study suggests that the application of Q -switched Nd:YAG laser as contactless drills in dentistry should be regarded as an alternative to the classical mechanical technique to improve the quality of the tooth treatment.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Crystal structure; Human enamel; Hydroxyapatite; Laser ablation; Microhardness; Nd:YAG laser |
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 02 Jan 2019 02:48 |
| Last Modified: | 02 Jan 2019 02:48 |
| URI: | http://eprints.um.edu.my/id/eprint/19864 |
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