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正常的牙颌形態是什麽樣子?

Posted By vickong pun     July 5, 2021    

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正常的牙颌形態是什麽樣子?

  正常的牙颌形態是什麽樣子?不同的人因爲個體差異,使得牙颌形態(牙齒大小、形態等)也 存在很大的差異.但仍有一些共同的特征.正常的恒牙列應符合 下-列基本條件:

(])牙齒排列正常.既無牙齒擁擠也無散在間隙.沒有常說的 裏出外進現象

(2)上下牙弓形態、大小正常.相M關系正常。

(3)上下一牙齒呈良好牙尖對牙窩的接觸關系?無反轉、鎖轉等 咬合異常現象.

(4)上前牙在下前牙的植前方.距離不超過3臺米.旦L前牙 ?蓋下前牙的深度不超過下前牙高度的1/3。

(5)上下颌樣大小、形態及相互關系應正常協調,沒有颌骨前 突、後縮或偏斜,全面的講.正常牙颌形態還應包括口面部神經肌 肉功能正常.以及散颌關節形態和功能正常,也就是不影響患昔的 美觀和功能。

                    

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