The problem that never was or: do not meet bridges half-way.
D000293:Adolescent; D000328:Adult; D000848:Anodontia / Q000534:rehabilitation; D003442:Crowns; D003830:Denture, Partial, Fixed; D006801:Humans; D007180:Incisor / Q000002:abnormalities; D008297:Male; D013997:Time Factors