Grinding and spacing the teeth for cosmetic or therapeutic purposes

Question:
The Shaykh (may Allah have mercy on him) asked: Is it permissible to grind the teeth, whether in pairs or not?

Answer:
Spacing the teeth is prohibited, and it is among the major sins. The Prophet (peace and blessings be upon him) cursed the women who space their teeth for the sake of beauty. Therefore, it is not permissible to grind the teeth for cosmetic purposes, unless the teeth are defective and uneven and require treatment and repair. This falls under the category of treatment, and there is no harm in it. However, if the teeth are sound and have no defect, but a woman wants to space them, creating gaps between them to beautify herself in their opinion, then this is the forbidden act, and this is the one who is cursed for doing it: the women who space their teeth for beauty. This indicates that if it is not for beauty, but rather falls under the category of treatment and necessity, then there is no harm in it.