含牙囊肿

Features

  • 最常见的牙源性囊肿,仅次于根尖囊肿。
  • 起源于未萌恒牙的滤泡区。
  • 液体积聚于残余上皮与牙冠之间形成囊肿。
  • 常发生于成年人,20-40岁之间。
  • 最常见的部位:下颌第三磨牙,上颌尖牙,上颌第三磨牙。
  • 单房透明影像,边界清楚,包绕未萌牙或移位牙的牙冠。
  • 大的囊肿有扩张趋势(通常是颊舌向)。
  • 儿童时期的含牙囊肿又称萌出囊肿,常位于未萌牙上方的软组织中。
  • 成釉细胞的变异可起源于牙源性上皮囊肿的衬里。

Differential diagnosis

Cases

Dentigerous cyst associated with the left upper third molar

Dentigerous cysts associated with an upper canine.

Dentigerous cysts associated with lower third molar.

Dentigerous cysts associated with a lower canine

Dentigerous cyst associated with the right upper canine.

Dentigerous cyst associated with the upper third molar.

A dentigerous cyst associated with the left lower third molar.