My mother's dentures split in two so I have to take her to the dentist.
I have to take my mother to the dentist because her dentures broke in half.
どちらも「母の入れ歯が２つに割れたので歯医者に行かなきゃ。」という意味です。
1) My mother's dentures split in two so I have to take her to the dentist.
2) I have to take my mother to the dentist because her dentures broke in half.
「総入れ歯」は dentures と言います。
「母の入れ歯が２つに割れた」は
My mother's dentures split in two.
My mother's dentures broke in half.
などと言えます。
ご参考になれば幸いです！
日本 
