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齲齒易發部位

Posted By vickong pun     July 9, 2021    

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齲病系最常見嘅一種口腔疾病,終身未得過齲病嘅人少之又少。但系,唔同嘅人對齲病嘅易感程度仲系唔一樣嘅,有人容易患齲,有人相對就唔容易患齲。不僅唔同嘅個體對齲齒嘅易感程度唔一樣,同一個體嘅唔同牙齒,甚至同一牙齒嘅唔同部位對齲病嘅易感程度都唔一樣。下面介紹牙齒容易患齲齒嘅部位。  1.咬合面窩溝點隙 後牙嘅咬合面有一些深嘅窩溝、點隙,其開口比較小,因而非常唔容易清潔干凈。此外,窩溝點隙底部牙釉質相對較薄,抗齲能力相對較低。因此,呢個系齲齒高發嘅部位。  2.磨牙頰側點隙 有些人嘅磨牙頰側點隙很深,開口小,和咬合面窩溝點隙一樣容易患齲。咬合面窩溝點隙齲喺張口時很容易睇到牙齒咬合面發黑,而頰側點隙齲則需要牽拉頰部才能睇見,因而容易被遺漏,需要喺日常牙齒保健時更加細心才能發現。  3.牙齒頸部 牙冠部嘅牙釉質從牙尖到牙頸部系逐漸變薄嘅。牙齒頸部由於牙釉質相對薄弱而容易患齲。
齲齒易發部位  4.牙根部 牙根部發生嘅齲齒叫根面齲。與牙冠部唔一樣,牙根最表面覆蓋嘅系牙骨質而唔系牙釉質。與牙釉質相比,牙骨質嘅礦化程度和硬度較低,對齲齒嘅抵抗力也較弱,而且覆蓋喺牙根表而嘅牙骨質嘅厚度也比覆蓋喺牙冠表面嘅牙釉質嘅厚度薄很多,因而,牙根比牙冠對齲病嘅抵抗力要差很多。後生嘅牙根深深埋藏喺牙槽骨中,唔存在患齲嘅問題;中老年人牙根萎縮、牙根暴露後就很容易患根面齲。  5.鄰面 牙齒嘅鄰面系我哋擦牙漱口唔容易清潔嘅地方,更唔使講脷、頰肌嘅生理自潔作用,佢哋對牙齒鄰面嘅清潔更系無能為力。牙齒嘅鄰面系非常容易患齲嘅,而且患了齲也唔容易發現,只有症狀非常明顯抑或到醫院經專科醫生檢查才能發現鄰面齲。  簡而言之,齲齒好發嘅部位:一系唔容易清潔嘅部位,比如牙齒嘅鄰面、窩溝點隙;二系相對薄弱嘅部位,比如牙頸部、牙根部、窩溝點隙嘅底部等。

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