No doubt megalodon shark tooth were biggest tooth that any shark could have. There tooth could be 180mm long and could weight about 1/2 kg. The name ‘megalodon’ also means big tooth, these sharks are known by their enormous size of teeth. There collective teeth in jaws produced the most powerful bite force then any other marine life form could produce.
They can produce a bite force of 41000 lbf, so this makes sense as these sharks usually hunted big whales which were quite large in size then megalodon.