There are at least three groups using this name:
1) A 90's worship shred fest band from Philadelphia, PA. 2012-current.
2) A band from Purchase College. 2008-2009
3) A grunge/alternative rock band from Northampton, UK. 2016-current.
4) Australian indiepop band

1) Loose Tooth rips. End of discussion. Go home. Check your mail. Call your mom.
http://loosetoothphilly.bandcamp.com/

4) Australian indiepop band
Swept together from the ashes of your finest night on the tiles, Loose Tooth are a Melbourne three-piece who craft sweet guitar pop with frayed edges.

"Everything Changes unspools like your standard low-slung churner in the manner of The Velvet Underground, but Loose Tooth make it interesting with both sweetened female vocals and a surreal, hot-boxed atmosphere." - Faster Louder
https://www.facebook.com/loosetoothmusic/
https://loosetoothband.bandcamp.com/
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