The method 1 further comprising {HEAD ~ the step} of elevating {TAIL ~ a periosteum} away from the anterior maxilla with the delivery tool to expose a zygomaticomaxillary buttress region prior to the advancing step 
of elevating
The method 1 further comprising { HEAD ~ the step } of elevating { TAIL ~ a periosteum } away from the anterior maxilla with the delivery tool to expose a zygomaticomaxillary buttress region prior to the advancing step
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH