{HEAD ~ The vertical alveolar osteogenesis microdistractor device} 8 wherein {TAIL ~ the chamber} of the fixed bracket is a bottomed chamber 
{ HEAD ~ The vertical alveolar osteogenesis microdistractor device } 8 wherein { TAIL ~ the chamber } of the fixed bracket is a bottomed chamber
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH