All banded orthodontic appliances accomplish their purposes by delivering forces to the periodontium through the banded teeth. The exact pattern of biological responses which follows the delivery of a force to a tooth became a prime theoretical concern of the practicing clinical orthodontist. Indeed, the investigation of the manner in which mechanical forces delivered to teeth are translated into biological instructions to alter the anatomy of the dental unit continues to be one of the most intriguing and compelling tasks in orthodontics. The present study is intended as a contribution to the process of this investigation.