On Tue, 16 Dec 2008 08:29:54 -0800, John Larkin
wrote:

On Tue, 16 Dec 2008 11:31:27 -0000, "Arfa Daily"
wrote:


"John Larkin" wrote in message
. ..
On Mon, 15 Dec 2008 16:44:39 -0800, Archimedes' Lever
wrote:

On Mon, 15 Dec 2008 19:34:17 -0000, "Peter Hucker" wrote:

A pack-a-day smoker will lose approximately 2 teeth every 10 years.


But the average person loses about 6.5 teeth every 10 years. I suppose
that means smoking is good for dental health.

John


I haven't lost 6.5 teeth in my entire (considerable) adult life, let alone
the last 10 years. I don't think that I could come up with anyone in my
extended family or friends, who has lost that many either. Where did this
little gem of a 'fact' come from - "Dentistry for Beginners", published
1802, maybe ?

Arfa


I just did the math. 20 baby teeth, 32 adult teeth, 80 year lifespan.

John

Been doing MTBF calculations recently?