\n\n
\n\n当两颗相邻牙之间出现缝隙时,就会有食物嵌入。最常见的情况就是蛀牙,当蛀牙发生在牙齿邻接面的时候,就会出现牙齿邻接不紧的问题,这种情况导致的食物嵌塞,只要充填邻面牙洞并恢复正常的邻接关系就可以。
\n\n某些牙齿的牙尖比较高或者是位置异常,或者边缘嵴比较锐利,咀嚼食物时会将食物压入对侧两颗牙之间的间隙,造成食物嵌塞。这种情况需要调磨异常的牙尖和边缘嵴。
\n\n\n\n水平性食物嵌塞是怎么出现的呢?这种通常是因为牙周炎。健康的牙齿之间有饱满的牙龈乳头,一般没有间隙。牙周炎患者常常会伴有牙槽骨的破坏,导致牙龈退缩,牙龈退缩之后相邻牙之间就会出现缝隙,形状像三角形,称为黑三角(如下图)。
\n\n咀嚼食物的时候,面部肌肉的力量和舌的力量会将食物压入牙缝,造成水平性食物嵌塞。如果不能够及时清理掉,食物残渣又会进一步刺激牙龈,使得牙周组织炎症加重,牙龈进一步退缩,牙间隙也就会越来越大。如此恶性循环,直到牙齿松动、脱落。
\n\n既然牙龈已经退缩了,就很难再回到正常位置的,我们能做的就是防止其进一步的退缩。好好刷牙,配合使用牙线,将嵌塞的食物及时清理掉,以免牙龈进一步退缩。
\n\n以上是食物嵌塞的两大类型,每一种类型的食物嵌塞都可以单独存在和同时存在。
\n\n\n\n因牙齿缺失而进行义齿修复(戴假牙),如果义齿的制作不够精细,或义齿佩戴时间过长,老化变形,导致邻接关系异常,就会出现相关牙齿邻面接触不良的情况。
\n\n这种情况应该去口腔修复科就诊,调整或更换假牙,使其恢复良好的邻接关系。
\n\n牙周炎可以简单理解为牙齿周围组织(如下图)发生的炎症,会导致牙龈退缩和牙齿松动。牙龈退缩会导致黑三角的出现,牙齿松动会导致两颗牙之间的接触不够紧密,从而出现食物嵌塞,而食物嵌塞又会进一步加重牙周炎的发展,最终形成恶性循环。
\n\n治疗方案是先治疗牙周炎,如果患牙周围的牙槽骨破坏不严重,治疗后牙齿有可能恢复稳固,并与邻牙恢复健康的邻接关系,食物嵌塞会好转;如果患牙周围的牙槽骨破坏较严重,即使经过彻底的牙周治疗,患牙仍会有松动,黑三角仍然存在,食物嵌塞就难以根治了。这时,可能需要其它的方法来缓解食物嵌塞。这种牙周炎导致的治疗后出现的牙齿之间的间隙,不建议使用使用树脂或其他材料充填,建议个人使用牙线或牙间隙刷清洁;也可能需要将松动的牙与周围稳固的牙一起固定上(如下图),那么邻接点重新恢复紧密。
\n\n由于各种原因导致个别牙齿缺失,但是没有及时行义齿修复,久而久之,邻牙会向缺失牙的间隙倾斜,缺失牙对侧的牙也会伸长。这样,缺失牙周边及对侧多颗牙齿的邻接关系就会发生改变,出现食物嵌塞。
\n\n这种食物嵌塞的治疗比较复杂,所需时间较长,费用也比较高,所以牙齿缺失后一定要及时去修复。
\n\n智齿和相邻牙的邻接一般都不紧密,而且有些智齿是倾斜的,和相邻牙之间有较大的缝隙,很容易出现食物嵌塞的情况。
\n\n这种情况一定要将智齿拔掉。否则,长期的食物嵌塞会导致相邻牙出现严重的龋坏及松动。
\n\n牙齿拥挤错乱不整齐,牙齿之间邻接关系差,存在多个位点,多种原因造成食物嵌塞。
\n\n这种情况下最好能通过正畸的方式,将牙齿排列整齐,恢复正常的邻接关系,就能明显改善患者的症状了。
\n\n\n\n综上所述,如果出现了食物嵌塞的情况,一定要及时去找口腔医生进行诊治,接受专业的建议,不要随便磨牙齿做联冠或使用材料充填间隙,以免耽误治疗。
\n\n\n\n本文由南开大学附属天津市口腔医院正畸科李文龙撰写
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