涎石

xián shí xíng chéng jì yǔ xì jūn gǎn rǎn yǒu guān gèng yǔ tuò yè xìng zhì yǒu guān

涎石形成既与细菌感染有关，更与唾液性质有关。

The contributing factors of the sialolith were associated with the bacterial infection and the nature of the soliva.