Implant vs. Conventional Solution in Replacing First molar?

Authors

A mandibular first molar was missing for years and resulted in bone deficiency. The deficiency had a typical dip like profile of about 5mm in the deepest area. The ridge in that area ends in a knife edge. Should one consider grafting the missing tooth area to provide a condition suitable for an implant placement or should one restore the missing tooth with a conventional bridge considering that such option exists?