1. dental orthopedics-the branch of dentistry dealing with the prevention or correction of irregularities of the teeth. dental orthopaedics, orthodontia, orthodontics, orthodonture. dental medicine, dentistry, odontology-the branch of medicine dealing with the anatomy and development and diseases of the teeth.
1 Regular or Short-acting insulin usually reaches the bloodstream within 30 minutes after injection, peaks anywhere from 2 to 3 hours after injection, and is effective for approximately 3 to 6 hours.
Insulins are categorized by differences in: 1  Onset (how quickly they act) 2  Peak (how long it takes to achieve maximum impact) 3  Duration (how long they last before they wear off) 4  Concentration (Insulins sold in the U.S. have a concentration of 100 units per ml or U100. In other countries, additional concentrations are available.