It would be considered cruelty to remove a dog's teeth just to prevent bites. Can you explain further how this bite occurred? Minipins are quite small so in order to bite your daughter's face, the dog would have to be on furniture and/or your child would have had to have her face close enough for the dog to bite her there.
There are a few things you can do to help prevent further bites. One would be to have the minipin obedience trained and keep up on regular training sessions to keep him obedient. The following site is helpful in helping owners train their dog. Be sure and click on the link to the page on obedience at the bottom. and links on subsequent pages leading to detailed instructions.
Training works best if you train at least 30 minutes a day (two 15 minute sessions). I would start making your dog work via the Nothing in life is free program (NILF). It is outlined below.
Additionally, I would purchase a basket style muzzle for him and ensure he has it on when around your daughter or other children. You can see some here:
You should also teach any children that are around dogs how to safely interact with them and how to pay attention to dog body language. For instance, dogs do not like to be kissed or hugged but many people indeed do this regularly to their dogs. A lot of dogs will tolerate it especially from an adult but won't from a child. Here is a site that goes over things children should not do with dogs.
Here are some sites on body language. This will allow you to tell that your dog is becoming irritated or scared, etc.
I hope this information is helpful to you. If you would like any additional information or have more questions please don’t hesitate to press the reply to expert or continue conversation button so I can address any issues you still have . If you do find this helpful, please take this opportunity to rate my answer positively so I am compensated for my time.