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Eruption of deciduous teeth among Bengalee children.

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BRIEF
COMMUNICATION
Eruption of Deciduous Teeth among
Bengalee Children ’
PAPIA BANERJEE AND SUNETRA MUKHERJEE
Department of Anthropology, University of Calcutta. India
ABSTRACT
The eruption time of deciduous teeth of the Bengalee children was
noted and compared with the published material from other countries. It has been
seen that the onset of eruption in the Bengalee children is appreciably late compared with the others (Japanese, Korean, American and Whites).
The time of eruption of deciduous and
permanent teeth is regarded as one of the
best criteria for the estimation of age during childhood and the adolescent period.
But few attempts have been made to find
out with precision the age of eruption of
teeth among the populations of any region
of India. Shourie (’46) made a study of
the age of eruption of the permanent
dentition, but until now, no one has examined the question of the age of eruption of the deciduous teeth.
With this end in view the deciduous
teeth of 588 Bengalee children (male320, female - 268) were examined. The
children were of normal health showing no
acute or chronic disease and no medical or
artificial help was used by their parents to
promote the early eruption of teeth. The
date of birth in each case was taken from
the parents with much care and the ages
given by them appeared to be quite reliable.
When the present sample is compared
with samples drawn from among children
of other countries such as Japan (Kitamura, cit. Yun, ’57), Korea (Yun: ’57),
America (Sander, cit. Meredith, ’58) and
“Whites” (Hrdlicka, ’57) it is seen that the
marked difference occurs in the first occurrence of eruption. Bengalee children show
the average eruption time for the first tooth
as late as 10-13 months compared with
6-8 months of the “Whites” and 7-9
months of the other three groups (table
1). Among 102 Bengalee babies observed
at the age group 6-9 months only 15%
show the eruption of the first tooth. Thus
the Bengalee children are late in the onset of eruption of lower mesial incisors
compared with other samples, but the
differences in the eruption times of other
1 The present investigation was supported financially
partly by University Grants Commission and partly by
Anthropological Survey of India. Government of India.
TABLE 1
Comparative table showing the time of eruption of deciduous teeth accroding to age in months
Bengale e
Med. incisor
Lat. incisor
Canine
First molar
Second molar
Med. incisor
Lat. incisor
Canine
First molar
Second molar
AM.
J. PHYs.
Japanese
Korean
American
Whites
10-13
12-15
19-24
16-19
29-32
Upper
7-9
8-1 1
17-20
15-20
23-36
9-1 1
11-14
1519
13-19
19-29
!+11
12-15
16-18
9-12
12-14
20-24
16-18
?
30-32
10-13
15-20
20-24
16-18
29-32
Lower
7-9
8-1 1
16-19
15-20
22-26
7-9
11-14
1s-I9
13-19
1%ZI
7-9
11-15
6 8
14-15
20-24
15-16
30-32
Male
Female
10-12
11-14
19-24
16-18
29-32
10-12
14-18
20-24
16-18
29-32
ANTEBOP., 26: 357-358.
?
1
16-18
?
357
358
PAPIA BANERJEE AND SUNETRA MUKHERJEE
teeth appear to be much less. The eruption time of upper lateral incisors in the
present sample is compatible with the
other samples excepting the Japanese,
while in lower lateral incisor, the present
sample shows more similarity with the
‘Whites.” The eruption times of canine
teeth among the Bengalee children (1924 months) and of the second molars (2932 months) also agree well with those of
the ‘Whites,” but among the Korean and
the Japanese children these teeth erupt a
good deal earlier. In the case of first
molar also the Bengalee children show
more similarity with the ‘Whites’’ and the
American than the two Mongoloid groups.
Further work on the basis of economic
and other variables is in progress.
ACKNOWLEDGMENTS
Authors take this opportunity to express
their sincere gratitude to Mr. Ganguli and
Amar Bhai of Kalanabagram Junior Basic
Training School and the authorities of
Ramkrishna Mission Seba Pratisthan Hospital, Calcutta for their kind help and
cooperation in the collection of data.
LITERATURE CITED
Hrdlicka, A. 1957 HrdliEka’s Practical Anthropometry (Edited by Stewart) Philadelphia.
Meredith, H. V. 1958 Eruption of deciduous
teeth in Korean and American infants. (Comments and Communication) Am. J. Phy. Anthrop., 16: 141-143.
Shourie, K. L. 1946 Eruption age of teeth in
India. Ind. J. Med. Res., 34: 105-118.
Yun, 0.J. 1957 Eruption of primary teeth in
Korean rural children. Am. J. Phy. Anthrop.,
15: 261-268.
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