结果重庆市正常青少年的临床牙冠中心高度与国内外的相关资料测量结果不同。
Results The center height of clinical crowns were different according to different area and race.
用数显游标卡尺测量实验组模型牙冠高度，牙弓宽度和长度，计算出临床冠中心高度，并与对照组进行对比分析研究。
The height of crowns, the center height of clinical crowns, and the width and length of the dental arch were measured with a digital vernier calliper.
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