Devourer teeth are obtained from devourer carcasses. Devourers are only found in Chapter IV of The Witcher.

Source

• The Tome of Fear and Loathing, volume II

Notes

• Devourer remains will not contain these teeth without their Bestiary entry.
• The Dentist, Zahin Schmartz will require one set for the Won't Hurt a Bit quest.
• You will need ten sets for The Devourer Contract.