Methods X-ray dental film and panoramic pantomogram were used to determine the location of embedded supernumerary teeth on bases of the geometrical principle of X-xay photography.
方法通过拍摄X景
,结合临床检查,利用X射
照相中的几何学原理确定
的位置,以确定手术入路,然后拔除。
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The Seniors University of China (SUC) provides students with skills training, cultural inheritance education, social services, scientific research, and international exchanges, and offers both online and offline teaching activities for the elderly nationwide.
国家老年大学承培训、文化传承、社会服务、科学研究和国际交流等任务,面向全国老年人开展线上线下相结合的教学活动。