Conclusion: We use L as arch length and H as chord length to bend syringe needle that is used to posterior superior alveolar nerve block anesthesia by intraoral injection. The success rate is 98%.
结论：以牙槽孔至颧下嵴起始部的弧长和弦长为标准弯制注射针头，采用口内注射法进行上牙槽后神经阻滞麻醉，成功率为98％。
Objective To investigate the clinical significance of endothelin-l (ET-1) and interleukin-8 change in rabbits after lens extracapsular extraction and posterior chamber intraocular lens implantation.
目的探讨血浆和房水内皮素-l（ET-1），白细胞介素-8（IL-8）在人工晶状体植入术后动态变化的临床意义。
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