Leith Rona, O'Connell Anne C
Department of Public and Child Dental Health, Dublin Dental School and Hospital, Dublin, Ireland.
Pediatr Dent. 2011 Jul-Aug;33(4):300-6.
To evaluate the success of posterior NuSmile(®) and Kinder™Krown and to determine the level of parental satisfaction with this treatment option.
Forty-eight crowns were placed in 18 children with a mean age of 5 years. A split mouth design was used. Each participant randomly received each crown type on 2 or 4 pair matched molars. Two trained operators completed all treatments. Two additional trained and calibrated clinicians blindly re-evaluated crowns according to specified variables. A visual analogue scale was used to determine parental satisfaction. Examiner reliability was determined by Cohen's kappa scores and results were analysed statistically using Fisher's exact test.
All crowns were retained after 12 months with no statistical difference in the clinical and radiographic success of posterior NuSmile(®) and Kinder™Krowns. Overall success was high with 81% of facings intact and 83% free of gingival inflammation after 12 months. Radiographically, 81% were successful. Veneer facing wear was significantly more likely to occur with opposing crowns (P=.02). Parental satisfaction was excellent with a mean score of 9.3 out of 10.
These crowns combine the durability of conventional stainless steel crowns with improved esthetics and are proposed as a suitable alternative where esthetic demand is increased.
评估后牙NuSmile(®)和Kinder™Krown牙冠的成功率，并确定家长对这种治疗方案的满意度。
为18名平均年龄5岁的儿童放置了48颗牙冠。采用双侧对照设计。每位参与者在2或4对匹配的磨牙上随机接受每种类型的牙冠。两名经过培训的操作人员完成了所有治疗。另外两名经过培训和校准的临床医生根据指定变量对牙冠进行盲法重新评估。使用视觉模拟量表来确定家长的满意度。通过科恩kappa评分确定检查者的可靠性，并使用费舍尔精确检验对结果进行统计学分析。
12个月后所有牙冠均得以保留，后牙NuSmile(®)和Kinder™Krown牙冠在临床和影像学成功率方面无统计学差异。总体成功率较高，12个月后81%的贴面完好，83%无牙龈炎症。影像学检查显示，81%成功。与对颌牙冠相比，贴面磨损的发生可能性显著更高（P = 0.02）。家长满意度极佳，平均评分为9.3分（满分10分）。
这些牙冠结合了传统不锈钢牙冠的耐用性和改善的美观性，被提议作为美观需求增加时的合适替代方案。
