Abstract
An ideal material has yet to be discovered that can completely treat dentin hypersensitivity. However, if a highly biocompatible material such as bioglass, could be melted by laser irradiation to achieve better sealing depth for dentinal tubules, it may subsequently bond to dentin structures under a physiological environment and offer a prolonged therapeutic effect. The authors used four types of energy parameters to melt the composition-modified bioglass. These four types were 30 Hz, 330 mJ/pulse (G+ mode), 30 Hz, 160 mJ/pulse (G- mode), 10 Hz, 400 mJ/pulse (D+ mode), and 10 Hz, 200 mJ/pulse (D- mode). The temperature elevation, occlusive depth of bioglass, and phase changes in the bioglass after laser irradiation were evaluated by means of scanning electron microscope (SEM), thermometer, and X-ray diffractometer (XRD). The occlusive depths of 2 and 10 μm in the dentinal tubules were achieved when the bioglass underwent 30 Hz, 160 mJ/pulse (G- mode) and 30 Hz, 330 mJ/pulse (G+ mode) of laser treatments, respectively. The bioglass experienced a temperature increase of less than 600 °C, and no phase transformation was observed after Nd:YAP laser irradiation. The melting point of a composition-modified bioglass could be reduced and its use plus Nd:YAP laser have the potential in clinical use to treat dentin hypersensitivity.
Original language | English |
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Pages (from-to) | 511-519 |
Number of pages | 9 |
Journal | Dental Materials |
Volume | 21 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2005 |
Keywords
- Bioglass
- Dentin hypersensitivity
- Nd:YAP laser
ASJC Scopus subject areas
- General Materials Science
- General Dentistry
- Mechanics of Materials