A

When vertical bone height adjacent to the mental foramen is <10 mm (an atrophic mandible), miniplates, lag screws, 3-D plates or MMF cannot obtain secure fixation; AO load-bearing reconstruction plates are recommended because they span the defect and provide rigid stability despite limited bone stock [Santos et al., 2013, PMID 23851887; de Oliveira et al., 2015, PMID 25994530].