✔ 最佳答案
It's 'to chip one's tooth' - for if you are missing a part of the tooth.
eg. I tripped over a piece of rock, and chipped my front tooth.
If the tooth has completely fallen out, then you can use:
'has fallen out/ fell out'
I tripped over a piece of rock, hit the ground, and my front tooth fell out!
2010-03-28 21:20:42 補充:
'Knocked out' can also be used, or 'broke/ break' to indicate that part of the tooth is missing due to the incident.
Not 'ripping out' - that's something a dentist would do as his/her last resort to get your rotten tooth out!