ee
Table 19
Subjects With Positive Bentonite Flocculation Test
Subject No.
841%
Age
+1
886 |
953
49
42
Sex
BFTtiter
F
1. 236
M
M
64+
1 6+
M-ray evidence
of arthritis
Clinical findings
None
Neg. in 1957, °58, and '59
Not tested
None
Mild osteoarthritis in 1959.
No joint findings; bronchial
asthma; 2+ prostatic hypertrophy.
Figure 12. Roentgenograph of hands showing congenital hypoplasia oftheeiddle phalanx, 5th finger.
ae
the Majuro group,although the general impres-,
sion was that their standards of oral hygiene Were
lower. In both the exposed and unexposed Ronge-'
_ lap children, areas of hypoplastic enametin deciduous teeth were not an unusualfinding.
Adults
Only about 10% of the Rongelap people prac-
ticed good oral hygiene. Peridontal disorders may
have been slightly‘higher in the exposed group,although there wasnosignificant difference in the
incidence ofcaries. In young adults, subgingival
calculus wasusually present in the form of cervical
ringlets accompanied by marginal gingivitis, and
very little 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
L855 71
a.