gnashing
Another word for grin teeth together would be grit.
Grating, sanding, wearing down, weathering. I'm assuming you're not referring to the slang.
recover
Contentment
Marvelous.
Another word for grin teeth together would be grit.
Bruxism is the medical term that refers to grinding or clenching the teeth. Most people don't even realize they have bruxism because it occurs while they sleep.
Milk teeth.
Another word for Tooth is Tand
Another word starting with g is gloominess
Odontophobia.
Floating
Tartar
Finish is another word for completion starting with the letter F.
Liberalness is another word for generosity starting with the letter L.
Another word beginning with the letter D for false teeth is Dentures. I.E, Dentures are popularly known as the go-to for false teeth however there are other types of false teeth such as bridges and caps; which don't replace all of the teeth.
Choppers is a nickname for teeth and helicopter's.