Phonghanyudh Araya, Ruangdit Chayathorn, Pornprasertsuk-D Amrongsri Suchaya, Phanthumvanit Prathip
Oral Health Prev Dent. 2017;15(6):575-579. doi: 10.3290/j.ohpd.a38996.
To assess the one-year outcome of glass-ionomer cement (GIC) restorations with partial carious dentin removal in primary molars using digital subtraction radiographs.
Children ages 6-8 years were recruited. Forty-nine primary molars with deep carious lesions were studied. The carious dentin was removed at the dentoenamel junction (DEJ) and restored with GIC. Digital radiographs were taken immediately after restoration, and at 6 and 12 months after restoration. The sets of digital radiographs were subtracted and analysed using Image-Pro Plus software.
At the 12-month follow-up, 38 of the original 49 primary molars were analysed. No postoperative pain or signs of pulp pathology were reported. 76% and 87% of molars showed an increase in density of the studied areas compared to control areas at 6- and 12- month follow-ups, respectively. The density of digital subtraction radiographs increased to 5.3 and 8.2 at 6 and 12 months from baseline, respectively. The mean density of the areas under restoration at 6 months and 12 months was statistically significantly higher than at baseline (paired t-test; p < 0.05).
Using digital subtraction radiographs, GIC restorations with partial carious dentin removal in primary molars showed a high potential for dentin remineralisation after 1 year.
使用数字减影射线照相术评估在乳牙中部分去除龋坏牙本质后玻璃离子水门汀（GIC）修复体的一年期疗效。
招募6 - 8岁儿童。对49颗患有深龋病变的乳牙进行研究。在牙釉质牙本质界（DEJ）去除龋坏牙本质，并用GIC进行修复。修复后立即、修复后6个月和12个月拍摄数字射线照片。使用Image-Pro Plus软件对数字射线照片组进行相减和分析。
在12个月的随访中，对最初49颗乳牙中的38颗进行了分析。未报告术后疼痛或牙髓病变迹象。在6个月和12个月的随访中，分别有76%和87%的磨牙与对照区域相比，研究区域的密度增加。数字减影射线照片的密度在6个月和12个月时分别从基线增加到5.3和8.2。修复区域在6个月和12个月时的平均密度在统计学上显著高于基线（配对t检验；p < 0.05）。
使用数字减影射线照相术，在乳牙中部分去除龋坏牙本质的GIC修复体在1年后显示出牙本质再矿化的高潜力。
