Tooth eruption sequence in a tribe of Central Australian aborigines

Barrett, M. J.; Brown, T.; Cellier, K. M.

doi:10.1002/ajpa.1330220119

Cited by 21 publications

(13 citation statements)

References 12 publications

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“…The latter sequence has received the most attention in the literature. European-derived populations tend to have lower frequencies of M2Pz than other human groups: compare 48% in Pima Indians and 63% in Australian aborigines (Barrett et al, 1964) with the value of approximately 24% in Ten State whites. This value may represent a good average estimate for M2P2 in Europeanderived populations, as other studies of these groups report its occurrence between 13 and 36% (see Knott and Meredith, 1966).'…”

Section: Comparative Odontologymentioning

confidence: 92%

“…All these studies pertain t o children of European ancestry. Data for a few sequences are available for a few other human populations: Koski and Garn (1957) on Pima Indians, Barrett et al (1964) on Australian aborigines, and Debrot (1968) on children of Curaqao. Unfortunately, it is not easy to compare these different sources.…”

mentioning

confidence: 99%

“…The methods of Adler and Godeny (19521, Clements et al (1953), Knott and Meredith (1966), Debrot (19681, and Savara and Steen (1978) are each unique. Further, cross-sectional studies vary in age of children studied, and failure to include the full age range of tooth eruption can skew eruption sequence frequencies (Adler 1963;Barrett et al, 1964). Differences in the treatment of ties in longitudinal eruption data make some studies incomparable (cf.…”

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confidence: 99%

“…Differences in the treatment of ties in longitudinal eruption data make some studies incomparable (cf. Savara and Steen, 1978;Barrett et al, 1964).…”

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confidence: 99%

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Polymorphisms in eruption sequence of permanent teeth in American children

Smith

Garn

1987

American J Phys Anthropol

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This study provides basic descriptive data on the frequency of pairwise eruption sequences ascertained in cross-sectional examination of 6,000 black and white American children in the Ten State Nutritional Survey of 1968-1970. All sex and race groups share a distinct pattern of sequence polymorphisms in terms of location, number, and level. Teeth in eruption phase I (M1, I1, I2) rarely reverse in sequence with those in phase II (C, P1, P2, and M2). Five sequences have variants that appear at greater than or equal to 20% in all groups, with M1I1 vs. I1M1 approaching maximum polymorphic values of 50%/50%. The traditional notation for eruption sequences can be modified to reflect these important variants, giving the sequence M1 I1 I2 [P1 C P2] M2 for the maxilla and [M1 I1] I2 [C P1] [P2 M2] for the mandible. The location of major polymorphisms is explicable by close timing of teeth within phase I and, separately, teeth within phase II eruption. However, strong integration of development of physically adjacent teeth apparently acts to reduce substantially the number of sequence reversals. The Ten State Survey data provide a sound descriptive basis for two populations, yet precise comparative data are available for few other human groups or primate species.

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Section: Comparative Odontologymentioning

confidence: 92%

mentioning

confidence: 99%

mentioning

confidence: 99%

“…Differences in the treatment of ties in longitudinal eruption data make some studies incomparable (cf. Savara and Steen, 1978;Barrett et al, 1964).…”

mentioning

confidence: 99%

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Polymorphisms in eruption sequence of permanent teeth in American children

Smith

Garn

1987

American J Phys Anthropol

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“…There is a tendency for relatively late premolar eruption (Barrett, 1957a,b;Barrett et al, 1964;Brown, 1978;Brown et al, 19791, little premature deciduous tooth loss, and quick succession of permanent teeth (Brown, 1985).…”

Section: Methodsmentioning

confidence: 98%

Occlusal variation in Australian Aboriginals

Corruccini

Townsend

Brown

1990

American J Phys Anthropol

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Variation of dental occlusion around established norms has frequently been related to industrialized or modernized life habits. This tendency has been tested among samples (n = 48) of older (originally nomadic) and younger (settled and rationed) Australian Aboriginals. Although significant differences are found in incisor relation traits, tooth malalignment, and relative arch breadth, these are slight compared to some other studies of peoples undergoing one-generation dietary westernization. Reasons for this might relate to concomitantly subtle differences in diet or masticatory habits, genetic buffering, attrition gradient, tooth size, biased sampling according to tooth retention, or fluoride in water supplies.

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Sequence of emergence of the permanent teeth in Macaca, Pan, Homo, and Australopithecus: Its evolutionary significance

Smith

1994

American J Hum Biol

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There are two main questions about the sequence of emergence of the permanent teeth in humans: 1) Why is there so much variation in sequence within human populations? (2) What is the adaptive or evolutionary significance of emergence sequence? Here, the human condition is considered by comparing us to other living primates and to our evolutionary past and considered in the light of Schultz's hypothesis that sequence of tooth emergence is adapted to rate of postnatal growth (Schultz AH. In JM Tanner (ed.) Human Growth, pp 1-20, 1960). Frequencies of individual pairwise sequences (e.g., M I vs. I M ) in the emergence of the permanent dentition are described for N = 110 Macaca nemestrina, and compared to N = 157 Pan troglodytes and ≥6,000 Homo sapiens. In addition, sequences of gingival emergence are reconstructed for Australopithecus and early Homo. Trends observed across these catarrhine primates suggest that sequence and variability in sequence can be understood by a simple model of adaptation of tooth emergence to growth rate. As rate of postnatal growth slows, molars drift to later positions in sequence, either by always emerging late in sequence, or by varying in the direction of late emergence. "Augmented sequences" (sequences written with notations about variability) are important in recognizing evolutionary trends; further, they often alter perception of similarities and differences among taxa. Although samples are small, Australopithecus africanus resembles the rapidly developing genera Macaca and Pan more than it resembles Homo sapiens. © 1994 Wiley-Liss, Inc.

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Tooth eruption sequence in a tribe of Central Australian aborigines

Cited by 21 publications

References 12 publications

Polymorphisms in eruption sequence of permanent teeth in American children

Polymorphisms in eruption sequence of permanent teeth in American children

Occlusal variation in Australian Aboriginals

Sequence of emergence of the permanent teeth in Macaca, Pan, Homo, and Australopithecus: Its evolutionary significance

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