Not all of dental arch width and length will relapse after retention.
经治疗和保持后，上下牙弓宽度和长度并非一定会复发。
Objective: To investigate the effects of tooth extraction on dental arch width and alveolar bone width.
目的：研究拔牙矫治对牙弓宽度和基骨宽度的影响。
CONCLUSION: the dis-coordination of the dental arch width in maxilla and mandible has an affinity with periodontal disease.
结论：上、下牙弓宽度不调与牙周病有密切关系。
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.
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。
Result The increase of width of dental arch and basal bone has statistically significant difference.
结果治疗后牙弓、基骨的宽度比治疗前增加，统计学分析有显著性差异。
Result The increase of width of dental arch and basal bone has statistically significant difference.
结果治疗后牙弓、基骨的宽度比治疗前增加，统计学分析有显著性差异。
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