Here’s an extremely rare tooth. If this were a first premolar, this type of lower premolar with three seperate canals and foramina exists 0.5% of the time¹.

Lower second premolars would occur like this less than that. As far as I know, there hasn’t been a large enough population of these teeth to determine a precise prevalence.

1. Vertucci FJ: Root Canal Morphology of Mandibular Premolars, J Am Dent Assoc 97:47, 1978. [↩]

I finally got around to opening up the computer at home that I haven’t been able to power-up since the electrical storm a year ago. This is the inside of the power supply. The fuse does not conduct current (is blown).

So I’m wondering how a power surge got through the surge protector that the computer is connected to, blew the fuse in the power supply, then fried the circuit board.

Oh well, I’ll just stick to root canals. The computer still won’t boot either. There’s a problem with either the hard drive controller or the master drive. I suspect the drive itself, but it will probably take me another year to investigate that.

Our weekends are usually jammed with things that keep us too busy. This weekend was even busier with the two shows that we saw.

Movin’ Out is a ballet set to Billy Joel’s music. It turned out to be a very nice production with great choreography, dancing, and of course, music.

We just got back from Toronto where we saw the Blue Man Group. It was a unique sensory experience that was gritty and industrial–a techno-opera with a great sense of humour. It was well worth an evening of getting lost in the parking garage and fighting with traffic in Toronto.

With our plants recovering from salt shock, they’re more susceptible to parasites. Mealy bugs have appeared on this one where previously they never were.