上颌切牙区基牙牙冠高度和唇侧倒凹深度对弹性义齿固位影响研究
상합절아구기아아관고도화진측도요심도대탄성의치고위영향연구
Effect of the length of crown and the depth of undercut on the retention of flexible denture in maxillary incisor region
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