Salivary calculus

Japanese: 唾石 - だせき（英語表記）salivary calculus

A calculus formed by calcium deposition in the efferent duct of the submandibular or parotid gland. Small foreign bodies or bacteria often become the nucleus, and it is not formed by saliva stasis or concentration alone. It occurs most frequently in the submandibular gland, and the main symptoms are colic-like pain when eating and swelling of the salivary gland. Although the calculus may pass naturally, it is often necessary to remove the calculus through an incision in the oral cavity or to completely remove the gland through an external incision.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

顎下腺や耳下腺の輸出管の中に石灰が沈着して生じた結石。小異物や細菌が核になることが多く，唾液のうっ滞や濃縮だけでは生成されない。顎下腺に最も多く生じ，食物摂取時の疝痛様の疼痛や唾液腺の腫脹が主症状である。結石は自然に排出されることもあるが，口腔内から切開して唾石を摘出したり，外切開により腺の全摘が必要となる場合が多い。

出典　ブリタニカ国際大百科事典小項目事典ブリタニカ国際大百科事典小項目事典について　情報

<<: Massimo d'Azeglio

>>: Chipped stone tools