Doctor Who season eight

[Aractus]

Yeah it was already established when Doc's companion Romana regenerates that a. a timelord can choose their appearance and b. they can take the likeness of another living person (be that other person timelord or human).

BUT, it was also established that every cell in the doctor's body dies and is replaced by new ones, and specifically I'm thinking of "Parting of the Ways" when Tennant's doctor says "hello I ca- (gulp) new teeth that's weird - so where was I..." and in the "Into the Dalek" there are a couple of shots where Capeldi's fillings are clearly visible - he should have no fillings, he hasn't been to a dentist yet for his brand new teeth!

I might add, that that shot of Tennant was terrible. It's OK looking back now, but at the time everyone thought that Eccleston's replacement looked juvenile and didn't know what to think. It was wrong to introduce him right at the end of the episode like that - either introduce him earlier in the episode or don't let him speak at all until his first episode just close with Rose looking horrified.

And also, the thing that bothered me about the "Into the Dalek" episode - the humans have ineffective weapons against the Daleks, right? But it's been well established that Dalek weapons can easily penetrate and destroy other Dalek's - so why are they not using Dalek weapons against the Daleks? They must have killed enough to accumulate some (all they have to is disconnect them from the dead daleks and connect a trigger), and yet no one is using them!!