Tooth replacements in young adults with severe hypodontia: Orthodontic space closure, dental implants, and tooth-supported fixed dental prostheses. A follow-up study.

•Fifty children missing 6 or more teeth were surveyed after age 18.•Implants, space closure, and retaining deciduous teeth were the treatments of choice.•Implants in the anterior region were inadequate in patients with severe hypodontia.•Mucosal discoloration or visible metal were most pronounced in the anterior mandible.•Persisting deciduous teeth showed a good survival rate.