Park Jeong-Kil, Yun Dong-In, Hur Bock, Kim Hyung-Il, Kwon Yong Hoon
Department of Conservative Dentistry, School of Dentistry, Pusan National University, Yangsan, Korea.
Photomed Laser Surg. 2010 Dec;28(6):779-84. doi: 10.1089/pho.2009.2714.
The aim of this study was to investigate the water sorption and solubility of flowable resins light cured using a blue diode-pumped solid-state (DPSS) laser.
DPSS lasers have many advantages over conventional lasers due to their compactness, efficiency, and price.
The water sorption and solubility of seven different flowable resins were measured by following ISO 4049 procedures. The specimens were light cured using two different light sources: 473-nm DPSS laser (LAS) and quartz tungsten halogen (QTH) light (OP). The light-cured specimens were immersed in distilled water for 7 days. The output light intensity of LAS and OP were 500 and 800 mW/cm(2) respectively. ANOVA was performed for the statistical analysis of the obtained data (p < 0.05).
The specimens light cured using LAS and OP showed no statistical difference between them regarding water sorption and solubility (almost the same values with the same product). The maximum water sorption from the specimens was not more than 40 μg/mm(3). Also, the maximum solubility was close to 7.5 μg/mm(3). These two values were the maximum limits allowed by ISO 4049. The relationship between both water sorption and solubility and filler content was negligibly low regardless of the difference of the light-curing sources.
Within the limits of this study, the water sorption and solubility of flowable resins, which were light cured using a DPSS laser and QTH light, were within acceptable ISO levels. The 473-nm DPSS laser showed potential as a light source for light curing flowable resins.
本研究旨在调查使用蓝光二极管泵浦固态（DPSS）激光光固化的可流动树脂的吸水性和溶解性。
由于其紧凑性、效率和价格，DPSS激光比传统激光具有许多优势。
按照ISO 4049程序测量七种不同可流动树脂的吸水性和溶解性。使用两种不同的光源对标本进行光固化：473纳米DPSS激光（LAS）和石英钨卤素（QTH）光（OP）。将光固化后的标本浸入蒸馏水中7天。LAS和OP的输出光强度分别为500和800 mW/cm²。对获得的数据进行方差分析以进行统计分析（p < 0.05）。
使用LAS和OP光固化的标本在吸水性和溶解性方面没有统计学差异（同一产品的值几乎相同）。标本的最大吸水量不超过40 μg/mm³。此外，最大溶解度接近7.5 μg/mm³。这两个值是ISO 4049允许的最大限值。无论光固化光源的差异如何，吸水性和溶解性与填料含量之间的关系都很低，可以忽略不计。
在本研究的范围内，使用DPSS激光和QTH光进行光固化的可流动树脂的吸水性和溶解性在ISO可接受水平内。473纳米DPSS激光显示出作为光固化可流动树脂光源的潜力。
