Phonghanyudh A, Phantumvanit P, Songpaisan Y, Petersen P E
Faculty of Dentistry, Thammasat University, Pathum-thani, Thailand.
Community Dent Health. 2012 Jun;29(2):173-8.
To evaluate the clinical performance and radiographic outcome of glass ionomer cement (GIC) restoration in primary molars using three caries removal techniques.
Randomised clinical controlled trial.
Two standard dental clinics in 2 hospitals near Bangkok.
A total of 276 children, aged 6-11, having dentinal caries on the occlusal and/or proximal surface extending at least one-third of dentine without signs and/or symptoms of irreversible pulpitis.
Children were randomly allocated into 3 study groups with different caries removal techniques: Group 1, partial soft caries removal at enamel-dentine junction (EDJ) by spoon excavation; Group 2, complete soft caries removal by spoon excavation; and Group 3, conventional caries removal by steel burs. All cavity preparations were restored with GIC (Fuji IX, GC Corp., Japan).
Clinical and radiographic evaluations were carried out at 6 and 12 months after restoration.
After 12 months, 89, 89, and 88 restorations in Groups 1, 2 and 3 were evaluated. The cumulative survival rates of GIC restorations in Groups 1, 2 and 3 were 83%, 83%, and 89% while the cumulative survival rates of pulp were 99%, 100% and 98% respectively. There were no statistically significant differences in the survival of GIC restorations or pulp in the three groups (p > 0.05).
The clinical and radiographic evaluations after 12 months indicated that partial soft caries removal at EDJ followed by GIC restoration was comparable to that of ART and conventional approaches.
采用三种龋坏去除技术评估玻璃离子水门汀（GIC）修复乳磨牙的临床性能和影像学结果。
随机临床对照试验。
曼谷附近2家医院的2家标准牙科诊所。
总共276名6至11岁的儿童，其咬合面和/或邻面有牙本质龋，龋坏延伸至牙本质至少三分之一，且无不可逆牙髓炎的体征和/或症状。
将儿童随机分为3个研究组，采用不同的龋坏去除技术：第1组，用匙形挖器在釉质-牙本质交界处（EDJ）部分去除软龋；第2组，用匙形挖器完全去除软龋；第3组，用钢钻常规去除龋坏。所有窝洞预备均用GIC（日本GC公司的Fuji IX）进行修复。
修复后6个月和12个月进行临床和影像学评估。
12个月后，对第1、2和3组的89、89和88个修复体进行了评估。第1、2和3组GIC修复体的累积生存率分别为83%、83%和89%，而牙髓的累积生存率分别为99%、100%和98%。三组GIC修复体或牙髓的生存率无统计学显著差异（p>0.05）。
12个月后的临床和影像学评估表明，在EDJ处部分去除软龋后进行GIC修复与非创伤性修复治疗（ART）和传统方法相当。
