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樟脑醌(CQ)是可见光固化齿科复合树脂所需要的光敏剂。用二氧化硒作为氧化剂,对樟脑酌氧化具有很强的选择性,因而樟脑醌的转化率很高,可达90％以上。虽然二氧化硒价贵,但反应中被还原为硒,硒粉回收后可再用。用上法制得的CQ作为光敏剂,对复合树脂(ME—2)进行固化条件试验,结果表明:不同来源的樟脑制成的CQ其熔点与文献值(m.p.198℃)基本一致;在促进剂配合下在可见光照射20秒后即可使复合树脂固化,且固化深度基本相同;CQ含量增加,固化深度稍有增加;使用DMT为促进剂,固化深度最大,促进剂含量控制在1.0～2.0％为宜;光照时间延长,固化深度有所增加。
Camphorquinone (CQ) is a photosensitizer required for visible light curable dental composite resins. With selenium dioxide as an oxidant, camphor selective oxidation has a strong selectivity, so camphor quinone conversion rate is high, up to 90%. Although expensive selenium dioxide, but the reaction was reduced to selenium, selenium powder can be reused after recycling. The results showed that the melting point of CQ made from camphor was basically the same as that of the literature (mp198 ℃). When the accelerant With the cooperation of visible light irradiation 20 seconds after the composite resin can be cured, and the curing depth is basically the same; CQ content increased slightly increased depth of cure; the use of DMT as accelerator, the maximum depth of cure, the accelerator content control in 1.0 to 2.0% Is appropriate; light time, curing depth has increased.