27
Table 19
Subjects With Positive Bentonite Flocculation Test
Subject No.
Age
Sex
BFT ter
B41
886
953
41
49
42
F
M
M
1/256
1/64
1/64
X-ray evidence
of arthnius
Clinical findings
None
Nottested
None
Neg in 1957, ‘58, and '59.
Mild osteoarthritis in 1959.
No joint findings; bronchial
asthma; 2+ prostatic hypertrophy.
ra
arg
a?
a
&
Figure 12. Roentgenograph of hands showing congemitet
ee
*
Dlasia
of the rill
=:
the Majuro group, although the general impreshavibeen slightly higher ia tie:‘exposed group,alsion was that their standards of oral hygiene were +s; though there was no signifiggiyit difference in the
lower. In both the exposed and unexposed Ronge= “incidenceofcaries. In young adults, subgingival
tap children, areas of hypoplastic enamel in decidcalculus was usually present in the form of cervical
uous teeth were not an unusualfinding.
ringlets accompanied by marginal gingivitis, and
very little supragingival deposition was observed.
Adults
Only about 10% of the Rongelap people practiced good oral hygiene. Peridontal disorders may
In subjects >35 years of age, loss of alveolar bone
was quite apparent, and supragingival calculus
was more prevalent than subgingival. Only 2% of
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