Potts T V, Petrou A
Department of Operative Dentistry, School of Dental Medicine, SUNY at Buffalo, NY.
J Endod. 1990 Jun;16(6):265-8. doi: 10.1016/S0099-2399(06)81627-4.
Photopolymerizing resins were exposed to three different wavelengths of light emanating from the argon laser. It was determined that the most efficient wavelengths for photopolymerization of camphorquinone-activated resins were at 477 and 488 nm. The 514.5-nm wavelength was relatively ineffective in activating polymerization. Four camphorquinone-activated resins were placed in the root canals of teeth and tested for polymerization depth using a 488-nm wavelength laser beam coupled to an optical fiber 200 microns in diameter. In regard to polymerization depth, these materials ranked as follows: Genesis greater than Prisma-Fil greater than Prisma Microfine greater than Prisma VLC Dycal. Alterations in the positions of the optical fiber and the surface of the resin in the canal made only minor differences in polymerization depth of the samples. The results indicate that an argon laser coupled to an optical fiber could become a useful modality in endodontic therapy.
将光聚合树脂暴露于氩激光发出的三种不同波长的光下。已确定，对于樟脑醌活化树脂的光聚合而言，最有效的波长为477和488纳米。514.5纳米波长在激活聚合反应方面相对无效。将四种樟脑醌活化树脂置于牙齿根管中，并使用耦合到直径为200微米的光纤的488纳米波长激光束测试聚合深度。就聚合深度而言，这些材料的排名如下：Genesis大于Prisma-Fil大于Prisma Microfine大于Prisma VLC Dycal。光纤位置和根管内树脂表面的改变对样品的聚合深度影响甚微。结果表明，耦合到光纤的氩激光可能成为牙髓治疗中的一种有用方式。
