Fig. 5
From: Safe regions of miniscrew implantation for distalization of mandibular dentition with CBCT
Measurement of the narrowest inter-radicular space at the buccal side of the roots (right-hand side). a A space of 7 mm from the alveolar crest between the second premolar and the first molar (L5b–L6mb). b A space of 7 mm from the alveolar crest between the mesiodistal roots of the first molar (L6mb–L6db). c A space of 7 mm from the alveolar crest between the first and second molar (L6db–L7mb)