Bhatt Sapan, Ayer Coralie D, Price Richard B, Perry Ronald
Tufts University School of Dental Medicine, Boston, Massachusetts.
Dalhousie University School of Dentistry, Halifax, Nova Scotia, Canada.
Compend Contin Educ Dent. 2015 Mar;36(3):208-10, 212, 214.
This study determined how long it would take skilled operators to deliver 16 J/cm2 to an anterior or a posterior restoration using different light-curing units (LCUs). Three skilled operators used the following LCUs at two locations in the MARC-patient simulator: Optilux 501 standard mode for 20 s; Sapphire Supreme for 5 s; Elipar™ S10 for 5 s and 20 s; Demi™ Plus standard mode for 5 s; SmartLite® Max boost mode for 5 s and continuous mode for 20 s; Radii Plus for 30 s; Valo (main version) in standard mode for 20 s and Xtra Power mode for 3 s; and Valo Cordless in standard mode for 20 s and Xtra Power mode for 3 s. The three MARCtrained operators made 30 readings with each light over 7 days. The energy (J/cm2) delivered to the anterior Class III and posterior Class I simulated restorations in MARC was recorded using a laboratory-grade spectroradiometer, and the time each light would take to deliver 16 J/cm2 calculated. ANOVA and Fisher's PLSD tests compared differences in the time to deliver 16 J/cm2 of energy, α = 0.05. Three-way ANOVA showed there was no significant difference between the operators, but there was a difference between the lights and locations. The Valo main and Valo Cordless in the Xtra Power mode delivered 16 J/cm2 in the shortest time at both locations. The Radii Plus took the longest to deliver 16 J/cm2, taking twice as long in the posterior location.
本研究确定了熟练操作人员使用不同的光固化单元（LCU）向前牙或后牙修复体输送16 J/cm²能量所需的时间。三名熟练操作人员在MARC患者模拟器的两个位置使用了以下LCU：Optilux 501标准模式照射20秒；Sapphire Supreme照射5秒；Elipar™ S10分别照射5秒和20秒；Demi™ Plus标准模式照射5秒；SmartLite® Max增强模式照射5秒以及连续模式照射20秒；Radii Plus照射30秒；Valo（主要版本）标准模式照射20秒以及超强模式照射3秒；Valo无线版标准模式照射20秒以及超强模式照射3秒。这三名经过MARC培训的操作人员在7天内对每种光进行了30次读数。使用实验室级光谱辐射计记录在MARC中输送到前牙III类和后牙I类模拟修复体的能量（J/cm²），并计算每种光输送16 J/cm²能量所需的时间。方差分析（ANOVA）和Fisher最小显著差异检验（PLSD）比较了输送16 J/cm²能量所需时间的差异，α = 0.05。三因素方差分析表明，操作人员之间没有显著差异，但不同的光和位置之间存在差异。Valo主要版本和Valo无线版在超强模式下在两个位置输送16 J/cm²能量所需时间最短。Radii Plus输送16 J/cm²能量所需时间最长，在后牙位置所需时间是前牙位置的两倍。
