BACKGROUND: The filling compactness can not be guaranteed due to apparatus retention in traditional lateral condensation.

背景：传统的侧方加压充填，在充填时因器械滞留易形成死角，充填致密性难以得到保证。

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BACKGROUND: The filling compactness can not be guaranteed due to apparatus retention in traditional lateral condensation.

背景：传统的侧方加压充填，在充填时因器械滞留易形成死角，充填致密性难以得到保证。

youdao