Kemoli Arthur Musakulu, van Amerongen Willem Evert
Department of Paediatric Dentistry/Orthodontics University of Nairobi, Kenya.
Int J Paediatr Dent. 2009 Nov;19(6):423-30. doi: 10.1111/j.1365-263X.2009.01013.x. Epub 2009 Sep 1.
To evaluate the influence of the size of proximal cavities on the survival rate of the atraumatic restorative treatment (ART) restorations.
A total of 804 children, aged 6-8 years, from a low socio-economic community, with an ART restorable proximal carious lesion in their primary molars, participated. Over a 3-week period, three 'experienced' and four 'inexperienced' operators randomly paired with four 'experienced' and four 'inexperienced' assistants, made the restorations at site using hand instruments. They randomly used Fuji IX, Ketac Molar Easymix and Ketac Molar Aplicap glass ionomer cements to restore the cavities, under randomly selected rubber dam and cotton roll isolation methods. The fillings were independently evaluated by nine trained and calibrated evaluators.
After 1 year, the survival rate of the fillings evaluated in the study was 44.8%. Irrespective of the other factors involved, restorations with the highest survival rate were of size between 2 and 3 mm (mesio-distal, bucco-lingual, and depth) or volumes 10.0-19.9 mm(3) (Chi-square, P = 0.002, KM mean survival of 345 days).
While the survival rates for class II ART restorations were still low, the choice of medium-sized proximal cavities gave better survival rates for this technique.
评估近中窝洞大小对非创伤性修复治疗（ART）修复体存留率的影响。
来自低社会经济社区的804名6至8岁儿童参与研究，他们的乳磨牙存在可采用ART修复的近中龋损。在3周时间内，3名“经验丰富”和4名“经验不足”的操作者与4名“经验丰富”和4名“经验不足”的助手随机配对，使用手持器械在现场进行修复。他们随机使用富士IX、Ketac Molar Easymix和Ketac Molar Aplicap玻璃离子水门汀，在随机选择的橡皮障和棉卷隔湿方法下修复窝洞。充填物由9名经过培训且校准的评估者独立评估。
1年后，本研究中评估的充填物存留率为44.8%。无论涉及的其他因素如何，存留率最高的修复体大小在2至3毫米之间（近远中、颊舌向和深度）或体积为10.0 - 19.9立方毫米（卡方检验，P = 0.002，KM平均存留时间为345天）。
虽然II类ART修复体的存留率仍然较低，但选择中等大小的近中窝洞可使该技术获得更好的存留率。
