what is the root canal treatment percentage out of all dental
treatments at the average american general dental clinic?

Hello Danielfinkelman,

Incidence of Endodontic Treatment: A 48-Month Prospective Study. 
Journal of Endodontics. 29(12):806-809, December 2003.

Abstract: 

"The purpose of this study was to determine the incidence of
endodontic services provided to participants in a longitudinal cohort
study. The "Florida Dental Care Study" was a prospective cohort study
using a representative baseline sample of 873 dentate adults. An
in-person interview and clinical dental exam were conducted at
baseline, 24, and 48 months after baseline, with telephone interviews
every 6 months between those times. Dental record information was
abstracted afterward. Thirteen percent of participants received at
least one endodontic procedure after baseline. Endodontic services
constituted approximately 2% of all dental procedures performed."

http://www.jendodon.com/pt/re/jendodontics/abstract.00004770-200312000-00005.htm;jsessionid=De2RzHgnpbXQ109TaBLV6KLl9lSdTEENjYrQKXG0qigu6wZTpGCQ!1096311956!-949856145!9001!-1


Does this help?

Thanks, 
Bobbie7