The Faculty of General Dental Practice, Royal College of Surgeons of England, Lincoln's Inn Fields, London WC2A 3PE.
Br Dent J. 2011 Sep 23;211(6):E13. doi: 10.1038/sj.bdj.2011.768.
Clinical successful use of resin-based composite restorations (RBCs) depends on knowledge of material and light curing unit (LCU) related factors. The purpose of this study was to evaluate general dental practitioners' knowledge of polymerisation of RBCs and LCU technology.
Members of the Active Research Group of the Faculty of General Dental Practice (UK) in England, Scotland and Wales engaged in primary dental care were sent a letter introducing the study and asking for their cooperation, followed by an email containing a link to the online survey questionnaire, hosted on Surveymonkey.com. The questionnaire enquired about current LCUs, and asked a series of questions on material science.
Sixty-six percent of the 274 members contacted responded. Fifty-seven percent used LED units, 25% quartz tungsten halogen (QTH), and 1% plasma arc (missing: 17%). Thirty percent reported having access to a radiometer. Appropriate responses regarding the degree of conversion of composite and adhesive materials were given by 32% and 23% respectively, and 22% agreed that LED and QTH LCUs had comparable efficiency in polymerising composites. Thirty-three percent were aware that RBCs eluted substances that may have adverse local or systemic consequences. Fifty-eight percent stated that if polymerisation of RBC is slowed down, polymerisation stress will be lower, and 43% said that polymerisation shrinkage will be reduced if the degree of conversion is reduced. Knowledge (measured by appropriate responses to these questions) was not related to years since qualification (r=-0.05, n=168, p=0.53).
The study suggests that dentists' knowledge of curing RBC restorations and LCUs is poor. This indicates that there is a need for training and guidance in this aspect of primary dental care.
临床成功使用树脂基复合材料（RBC）取决于对材料和光固化单元（LCU）相关因素的了解。本研究的目的是评估普通牙科医生对 RBC 聚合和 LCU 技术的了解。
英格兰、苏格兰和威尔士普通牙科实践学院（英国）的活跃研究小组成员接受了初级牙科护理方面的培训，他们收到了一封介绍研究并请求合作的信，随后收到一封电子邮件，其中包含一个指向在线调查问卷调查的链接，该问卷托管在 Surveymonkey.com 上。该问卷询问了当前的 LCU，并询问了一系列关于材料科学的问题。
274 名联系成员中，有 66%做出了回应。57%使用 LED 装置，25%使用石英钨卤素（QTH），1%使用等离子弧（缺失：17%）。30%的人报告说可以使用辐射计。分别有 32%和 23%的人对复合材料和胶粘剂材料的转化率做出了适当的回答，22%的人认为 LED 和 QTH LCU 在聚合复合材料方面具有相当的效率。33%的人意识到 RBC 会洗脱可能对局部或全身产生不利影响的物质。58%的人表示，如果 RBC 的聚合速度减慢，聚合应力将降低，如果转化率降低，聚合收缩将减少。知识（通过对这些问题的适当回答来衡量）与资格获得后的年限无关（r=-0.05，n=168，p=0.53）。
该研究表明，牙医对固化 RBC 修复体和 LCU 的了解很差。这表明在初级牙科护理方面需要培训和指导。
