With advancing age, the mandibular residual ridge undergoes resorption primarily in a pattern that reduces height anteriorly but tends to broaden posteriorly due to continued remodeling. This compensatory widening of the posterior ridge helps provide a larger surface area for denture support. Clinically, this is critical when planning for denture stability and retention, especially in the molar region. Surgeons must consider this widening during alveoloplasty or implant placement to avoid encroaching on vital anatomical structures. The anterior ridge, in contrast, often becomes narrower and shorter due to resorption, affecting denture fit anteriorly.

Reference: Contemporary Oral and Maxillofacial Surgery, James R. Hupp, 7th Edition.