Apparently, John Lennon's molar was sold for about $31000 at the Omega Auction House on November 4th. It went for double its listed price and was originally given by him to his former housekeeper. It is also reported to be now in the possession of a Canadian dentist (not confirmed and not me :)
Source: Rolling Stone Magazine (Online), November 6th, Read November 7th, http://www.rollingstone.com/music/news/john-lennons-tooth-sells-for-more-than-31-000-at-auction-20111106
Hans Skariah, B.Sc., DMD
Promenade Court Dental Health Group in Mississauga
2233 Hurontario St., Mississauga, ON, Canada
(1/2 km north of the QEW in the Dome Building)
(905) 273-7100