Table 19 Subjects With Positive Bentonite Flocculation Test + “oe Subject No. 841 886 953 Age 41 49 42 Sex BFT titer F 1/256 M 1/64 M X-ray evidence of arthritis Clinical findings None 1/64 Neg. in 1957, 758, and ’59. Nottested Mild osteoarthritis in 1959, None Nojoint findings; bronchial asthma; 2+ prostatic hy- DOE ARCHIVES 7 Seat” c pertrophy. oes wo: * et ee *aq aySaas gh. Io a Seepeets ot a BB £ 3 _f. Figure 12. Roentgenograph of hands showing congenital hypoplasia of the middle phalanx, 5th finger. the Majuro group, although the general impres- sion was that their standardsof oral hygiene were lower. In both the exposed and unexposed Rongelap children, areas of hypoplastic enamelin deciduous teeth were not an unusual finding. Adults Onlyabout 10% of the Rongelap people practiced good oral hygiene. Peridontal disorders may have been slightly higher in the exposed group,although there was no significant difference in the incidence of caries. In young adults, subgingival calculus was usually present in the form of cervical ringlets accompanied by marginal gingivitis, and verylittle supragingival deposition was observed. In subjects >35 years of age, loss of alveolar bone was quite apparent, and supragingival calculus was more prevalent than subgingival. Only 2% of ee ee wr eee — Oe _——_