Hydroxyapatite Film Coating by Er:YAG Pulsed Laser Deposition Method for the Repair of Enamel Defects
There are treatments available for enamel demineralization or acid erosion, but they have limitations. We aimed to manufacture a device that could directly form a hydroxyapatite (HAp) film coating on the enamel with a chairside erbium-doped yttrium aluminum garnet (Er:YAG) laser using the pulsed las...
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MDPI AG
2021-12-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/23/7475 |
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| author | Liji Chen Shigeki Hontsu Satoshi Komasa Ei Yamamoto Yoshiya Hashimoto Naoyuki Matsumoto |
| author_facet | Liji Chen Shigeki Hontsu Satoshi Komasa Ei Yamamoto Yoshiya Hashimoto Naoyuki Matsumoto |
| author_sort | Liji Chen |
| collection | DOAJ |
| description | There are treatments available for enamel demineralization or acid erosion, but they have limitations. We aimed to manufacture a device that could directly form a hydroxyapatite (HAp) film coating on the enamel with a chairside erbium-doped yttrium aluminum garnet (Er:YAG) laser using the pulsed laser deposition (PLD) method for repairing enamel defects. We used decalcified bovine enamel specimens and compacted α-tricalcium phosphate (α-TCP) as targets of Er:YAG-PLD. With irradiation, an α-TCP coating layer was immediately deposited on the specimen surface. The morphological, mechanical, and chemical characteristics of the coatings were evaluated using scanning electron microscopy (SEM), scanning probe microscopy (SPM), X-ray diffractometry (XRD), and a micro-Vickers hardness tester. Wear resistance, cell attachment of the HAp coatings, and temperature changes during the Er:YAG-PLD procedure were also observed. SEM demonstrated that the α-TCP powder turned into microparticles by irradiation. XRD peaks revealed that the coatings were almost hydrolyzed into HAp within 2 days. Micro-Vickers hardness indicated that the hardness lost by decalcification was almost recovered by the coatings. The results suggest that the Er:YAG-PLD technique is useful for repairing enamel defects and has great potential for future clinical applications. |
| first_indexed | 2024-03-10T04:49:51Z |
| format | Article |
| id | doaj.art-eb5f2cbc624240419baafecf7db077c6 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T04:49:51Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-eb5f2cbc624240419baafecf7db077c62023-11-23T02:44:05ZengMDPI AGMaterials1996-19442021-12-011423747510.3390/ma14237475Hydroxyapatite Film Coating by Er:YAG Pulsed Laser Deposition Method for the Repair of Enamel DefectsLiji Chen0Shigeki Hontsu1Satoshi Komasa2Ei Yamamoto3Yoshiya Hashimoto4Naoyuki Matsumoto5Department of Orthodontics, Osaka Dental University, 1-5-17 Otemae, Chuo-ku, Osaka 540-0008, JapanDepartment of Biomedical Engineering, Faculty of Biology-Oriented Science and Technology, Kindai University, 930 Nishimitani, Kinokawa 649-6493, JapanDepartment of Removable Prosthodontics and Occlusion, Osaka Dental University, 1-5-17 Otemae, Chuo-ku, Osaka 540-0008, JapanDepartment of Biomedical Engineering, Faculty of Biology-Oriented Science and Technology, Kindai University, 930 Nishimitani, Kinokawa 649-6493, JapanDepartment of Biomaterials, Osaka Dental University, 8-1 Kuzuha Hanazono-cho, Hirakata 573-1121, JapanDepartment of Orthodontics, Osaka Dental University, 1-5-17 Otemae, Chuo-ku, Osaka 540-0008, JapanThere are treatments available for enamel demineralization or acid erosion, but they have limitations. We aimed to manufacture a device that could directly form a hydroxyapatite (HAp) film coating on the enamel with a chairside erbium-doped yttrium aluminum garnet (Er:YAG) laser using the pulsed laser deposition (PLD) method for repairing enamel defects. We used decalcified bovine enamel specimens and compacted α-tricalcium phosphate (α-TCP) as targets of Er:YAG-PLD. With irradiation, an α-TCP coating layer was immediately deposited on the specimen surface. The morphological, mechanical, and chemical characteristics of the coatings were evaluated using scanning electron microscopy (SEM), scanning probe microscopy (SPM), X-ray diffractometry (XRD), and a micro-Vickers hardness tester. Wear resistance, cell attachment of the HAp coatings, and temperature changes during the Er:YAG-PLD procedure were also observed. SEM demonstrated that the α-TCP powder turned into microparticles by irradiation. XRD peaks revealed that the coatings were almost hydrolyzed into HAp within 2 days. Micro-Vickers hardness indicated that the hardness lost by decalcification was almost recovered by the coatings. The results suggest that the Er:YAG-PLD technique is useful for repairing enamel defects and has great potential for future clinical applications.https://www.mdpi.com/1996-1944/14/23/7475hydroxyapatite coatingEr:YAG laserpulsed laser depositionenamel defects |
| spellingShingle | Liji Chen Shigeki Hontsu Satoshi Komasa Ei Yamamoto Yoshiya Hashimoto Naoyuki Matsumoto Hydroxyapatite Film Coating by Er:YAG Pulsed Laser Deposition Method for the Repair of Enamel Defects Materials hydroxyapatite coating Er:YAG laser pulsed laser deposition enamel defects |
| title | Hydroxyapatite Film Coating by Er:YAG Pulsed Laser Deposition Method for the Repair of Enamel Defects |
| title_full | Hydroxyapatite Film Coating by Er:YAG Pulsed Laser Deposition Method for the Repair of Enamel Defects |
| title_fullStr | Hydroxyapatite Film Coating by Er:YAG Pulsed Laser Deposition Method for the Repair of Enamel Defects |
| title_full_unstemmed | Hydroxyapatite Film Coating by Er:YAG Pulsed Laser Deposition Method for the Repair of Enamel Defects |
| title_short | Hydroxyapatite Film Coating by Er:YAG Pulsed Laser Deposition Method for the Repair of Enamel Defects |
| title_sort | hydroxyapatite film coating by er yag pulsed laser deposition method for the repair of enamel defects |
| topic | hydroxyapatite coating Er:YAG laser pulsed laser deposition enamel defects |
| url | https://www.mdpi.com/1996-1944/14/23/7475 |
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