·加入收藏 ·设为首页 ·网站地图

龋病的临床特征

来源:[标签:来源] | 发布时间:2011-05-04 23:19:56 | www.chinesejk.com
  牙齿硬组织在色、形、质各方面均发生了变化。早期牙齿龋坏部位的硬组织内发生脱矿、微晶结构变化、透明度改变、牙釉质呈白垩色,继之病变部位有色素沉积,逐渐转为棕色或黑褐色,随着脱矿、有机质分解的不断进行,使牙釉质和牙本质舒松软化、缺损,牙齿腐烂成洞。若龋病发生于前牙,牙体会出现大小不一的龋洞,并常数个牙齿同时龋坏,变成一口残缺不全的、布满棕黑色龋洞的牙齿。如病变继续发展,随着牙髓进一步的坏死,整个牙齿可变成褐色或黑色,最终成为残冠、残根,极不美观。

(编辑:小鱼 )

  • {get sql="select contentid,catid,url,title from content_content where contentid > '$contentid' and catid='$catid' order by contentid asc" rows="1" return="s"} 上一篇: {/get}
看了本文的网友还看了:(搜索相关文章:Array )
    {tag_内容页相关信息}

[收藏] [打印] [关闭] [返回顶部]

频道精彩推荐

保健
健身
减肥
美容
整形
{get sql="SELECT contentid,title,url,description,thumb FROM `phpcms_content` WHERE contentid IN (SELECT contentid FROM phpcms_content_position WHERE posid=6) AND status=99 $cats120 ORDER BY contentid DESC" rows="1"}

……【查看详细

{/get}
    {get sql="SELECT contentid,title,url FROM `phpcms_content` WHERE contentid NOT IN (SELECT contentid FROM phpcms_content_position WHERE posid=6) AND status=99 $cats120 ORDER BY contentid DESC" rows="4"}
  • {/get}
    {get sql="SELECT contentid,title,url,thumb FROM `phpcms_content` WHERE thumb!='' AND status=99 $cats11 ORDER BY contentid DESC" rows="4"}
  • {/get}
糖尿病文章
    {get sql="SELECT contentid,title,url FROM `phpcms_content` WHERE status=99 $cats1006 ORDER BY contentid DESC" rows="8"}
  • {/get}
胃病文章推荐
    {get sql="SELECT contentid,title,url FROM `phpcms_content` WHERE status=99 $cats1067 ORDER BY contentid DESC" rows="8"}
  • {/get}
    {get sql="SELECT contentid,title,url,thumb FROM `phpcms_content` WHERE contentid IN (SELECT contentid FROM phpcms_content_position WHERE posid=6) AND status=99 $cats382 ORDER BY contentid DESC" rows="2"}
  • {/get}
    {get sql="SELECT contentid,title,url,thumb FROM `phpcms_content` WHERE contentid IN (SELECT contentid FROM phpcms_content_position WHERE posid=6) AND status=99 $cats1325 ORDER BY contentid DESC" rows="2"}
  • {/get}
妇科文章推荐
    {get sql="SELECT contentid,title,url FROM `phpcms_content` WHERE status=99 $cats653 ORDER BY contentid DESC" rows="8"}
  • {/get}
男科文章推荐
    {get sql="SELECT contentid,title,url FROM `phpcms_content` WHERE status=99 $cats654 ORDER BY contentid DESC" rows="8"}
  • {/get}
关于我们| 设为首页 | 加入收藏 | 网站地图 | 友情链接 | 业务联系 | 频道合作
Copyright © 2009 chinesejk.com All Rights Reserved 华人健康网 版权所有
本站如有转载或引用文章涉及版权问题,请速与我们联系 QQ:6875839
特别声明:本站内容仅供参考,不作为诊断及医疗依据。
闽ICP备09040914号