Multi-dentist offices increase to 22%.
D000328:Adult; D000368:Aged; D006124:Group Practice, Dental / Q000639:trends*; D006801:Humans; D007182:Income; D008875:Middle Aged; D010317:Partnership Practice / Q000639:trends*; D010318:Partnership Practice, Dental / Q000639:trends*; D011215:Practice Management, Dental / Q000639:trends