A diastema was present between anterior teeth in a patient requiring a removable partial denture (RPD). Why was the diastema closed before fabricating the RPD?

Closing a diastema in the anterior region before fabricating an RPD is primarily done for esthetic reasons. Anterior diastemas are visible and affect the smile. While support, retention, and stability are key components of RPD design, they are primarily determined by rests, clasps, and connector design, not by closing diastemas. The diastema closure improves the final appearance of the prosthesis.