YOU SAID:

My head is filled with gum

INTO JAPANESE

頭がガムで満たされている

BACK INTO ENGLISH

My head is filled with gum.

INTO JAPANESE

頭はガムでいっぱいだ。

BACK INTO ENGLISH

My head is full of gum.

INTO JAPANESE

頭がガムだらけだ。

BACK INTO ENGLISH

My head is full of gum.