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哪些牙齒易患頻病?

Posted By vickong pun     July 13, 2021    

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哪些牙齒易患頻病?

  

  哪些牙齒易患頻病?恒牙有28?32簌.它們發生陰病的機會也不相同。
下颌第一 磨牙是最早萌出的恒牙.即??六齡牙”?它的患痢率最高。
其次是下 颌第二磨牙.然後依次是上颌第一磨牙、上颌第二磨牙、上颌切牙、上颌前磨牙?患齣率最低的則是尖牙和下颌切牙。
乳牙一共冇20顆.這20顆牙齒發生舗病的機會是不同的,患 請率最高的是下颌第二扌L磨牙.其次是蔔颌第二乳磨牙.然後依次 是第一乳磨牙、上颌乳切牙和乳尖牙。

下颌乳切牙患齢病的機會 最小。
此外,乳牙脫落過早或過晚會引起替換相應乳牙的恒牙位 賞發生錯位.這類牙齒容易患融.牙齒形態發育不正常.牙齒鈣化 不良,牙釉質發育不全而致牙齒表面殘缺不全.這類牙齒也容易 患虬

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