Effects of orthodontic experience on the reliability of the GOSLON Yardstick

Objective: The aim of this study was to investigate the importance of the clinical experience on the reliability of the GOSLON Yardstick. Design: Comparative-measures study. Material: 3D images of the study models of children with complete unilateral cleft lip and palate (n: 119) at an average age of 9 years were included to the study. All subjects had their cleft lip and palate repaired in many hospitals by different surgeons, but no alveolar graft or any orthodontic treatment was performed. Method: Digital views of the models were used by Orthomodel software program. 3D images of the study models were scored by two groups of raters (Group I: 10 experienced orthodontists, Group II: 10 post-graduate orthodontic stu-dents) after careful perusal of published literature concerning GOSLON scoring and examining dental models samples. Main outcome measures: Statistics of intra- and inter-rater agreement. Results: Intra-rater agreement measurements of the two groups were high and high inter-rater agreement was also found between the two groups. Conclusion: Based on the results of this study clinical orthodontic experience does not affect significantly the reliability of the GOSLON Yardstick when all the raters trained before scoring.

腭裂修复术对不同年龄患者上下颌牙弓关系影响的研究

目的通过回顾性研究探讨接受腭裂修复术的年龄对患者上颌牙弓相对于下颌牙弓位置关系的影响。方法年龄〉10岁、腭裂术后2年以上的单侧完全性唇腭裂患者103例，根据接受腭裂修复手术时的年龄分为3组，A组：≤3．0岁手术组（n=38）、B组：≤6．0岁手术组（n=36）和C组：〉6．0岁手术组（n=29）。用上下颌牙弓石膏模型，对其牙弓关系行Goslon Yardstick等级评价，并对不同手术年龄组间的Yardstick等级进行统计学检验。结果统计学检验显示Yardstick等级在A组与B组间差异无统计学意义（P〉0．05），A组与C组间差异有统计学意义（P〈0．05），B组与C组间差异无统计学意义（P〉0．05）。结论6．0岁以下行腭裂手术的两组患者的上颌牙弓相对于下颌牙弓的后缩程度无差异，6．0岁以上行腭裂手术患者的上颌牙弓相对后缩程度要明显小于3．0岁以下手术者，稍小于6．0岁以下手术者，上颌牙弓相对后缩程度随手术年龄的增大有减小的趋势。

单侧完全性唇腭裂上下牙弓关系评价研究

目的评价单侧完全性唇腭裂(UCLP)患者上、下颌牙弓关系的协调性,并与亚洲和欧洲几大著名唇腭裂治疗中心的研究结果进行比较,为唇腭裂继发牙畸形的诊断、矫治设计和序列治疗提供依据。方法回顾性分析2013年3月至2014年3月于青岛大学附属医院口腔正畸科就诊的52例UCLP患者治疗前的记存模型,按照Goslon Yardstick评价系统和Eurocleft三分类法进行牙弓协调性评价。与中国台湾长庚医院、日本东京大学医院及欧洲6所唇腭裂治疗中心(A^F)的同类研究结果相比较,并进行统计学分析。结果本中心UCLP患者Goslon Yardstick平均等级为3.75±0.93,Goslon Yardstick等级为4的患者最多,占36.5%,59.6%患者属于差及较差的等级。与台湾长庚医院、东京大学医院及欧洲唇腭裂D治疗中心的结果相接近(P>0.05),比其他5所欧洲唇腭裂治疗中心患者的牙弓协调性差(P<0.05)。结论 UCLP患者上、下牙弓协调性差。青岛大学附属医院接受正畸治疗的UCLP患者,上下牙弓协调性与台湾长庚医院、东京大学医院、欧洲唇腭裂D治疗中心接近,比其他5所欧洲唇腭裂治疗中心牙弓协调性差。