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vickong pun
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鉆牙為什麽那麽痛

Posted By vickong pun     July 8, 2021    

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鉆牙為什麽那麽痛

  鉆牙為什麽那麽痛? 鑽牙爲什麽那麽痛就目前的醫療水平而言，補牙前必須鑽（磨）牙齒，目的是去除感染的齲壞組織，防止繼發齲病；另一方面將洞形制備成一定的形狀即固位形和抗力形。當齲病患者就診時其病變往往已侵入牙本質層（內含牙髓神經末梢），故在用牙鑽去除齲壞組織和制備洞形時，患者有輕度酸痛感，一般不需要特殊處理。當病變非常接近或已侵入牙髓，去齲和制洞時牙髓都有較劇烈的疼痛反應，洞越深，疼痛反應越明顯，鑽磨牙時爲防止摩擦産生的瞬間高熱，一般都有噴水降溫設備，而冷水又會加重疼痛反應，一般時磨時停，患者能慢慢適應，否則可采用局部注射麻醉、指壓麻醉、電子麻醉等方法止痛。據報道，國外還有用激光麻醉、催眠法、口服鎮靜止痛藥物等。對兒童還有用“笑氣”進行淺麻醉的。

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