Chain wear - effect on drivetrain
Something of a newbie question here - please be gentle! For the last nine months or so I've been riding to work (about 9 miles per day) most weekdays. I'd just got to the stage where I've realised the benefits of actual maintenance beyond the odd clean and re-lube every so often, and ordered a new chain (and chain breaker / wear indicator) yesterday.
Today when riding in I had a couple of big chain slips - enough to throw me off balance. It came as something of a surprise, so I didn't notice whether the chain slipped at the front or the rear. Obviously I'm going to go to my other bike until I can replace the chain, but I was concerned about the possibility of damage to the sprokets (which were new nine months ago) or chainwheels.
As far as the sprockets go, I'm inclined to follow the "0.75% 'stretch' means a new chain, 1% means a new cassette" rule of thumb. For the chainwheels, is there much cause for concern? Presumably the wear per tooth on the chainwheels would be less than on the sprockets because of the greater number of teeth. Am I likely to have incurred acute damage during the 'slips' though?