Fluctuating dental asymmetry as a measure of odontogenic canalization in man

Kieser, Julius A.; Groeneveld, H. T.; Preston, C. B.

doi:10.1002/ajpa.1330710407

Cited by 47 publications

(26 citation statements)

References 40 publications

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“…However, we have no way to document this exogenous variable, and the high asymmetry of certain offspring in the unstressed group remains unexplained. Even in a relatively stress-free environment, there are undoubtedly some individuals who are less well canalized in their growth and development than others [64], That the effects of the psychological stres sor could be detected in the experimental sample, but were neither strikingly obvious nor consistent, is undoubtedly attributable to a number of confounding variables. For example, we did not actually measure the impact of the stressor on the pregnant fe male.…”

Section: Discussionmentioning

confidence: 94%

Prenatal Psychological Stress, Dermatoglyphic Asymmetry and Pregnancy Outcome in the Pigtailed Macaque (<i>Macaca nemestrina</i>)

Newell‐Morris

Fahrenbruch

Sackett³

1989

Neonatology

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The relationships between maternal psychosocial stress during pregnancy and asymmetry in dermal ridge count, gestation length, birth weight percentile and survival were examined in 68 pigtailed macaque offspring. Twenty-five pregnant females were stressed daily by capture from 30 through 130 days postconception; 43 control unstressed females were housed under conditions of minimal disturbance. The difference between total intercore dermal ridge counts between right and left hands of the offspring was used as a measure of the perturbed development that theoretically occurs in the presence of a prenatal stressor. Dermatoglyphic asymmetry was significantly higher in the stressed offspring than in the unstressed group (mean asymmetry = 7.3 ± 2.8 and 5.4 ± 2.5, respectively; t = 2.85, p < 0.01). Although maternal stress alone was not related to differential gestation length, birth weight, or survival, high asymmetry (8–13 residual dermal ridges) was significantly associated with increased perinatal mortality.

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Section: Discussionmentioning

confidence: 94%

Prenatal Psychological Stress, Dermatoglyphic Asymmetry and Pregnancy Outcome in the Pigtailed Macaque (<i>Macaca nemestrina</i>)

Newell‐Morris

Fahrenbruch

Sackett³

1989

Neonatology

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“…In this respect, it is interesting to note that when tooth size is corrected for arcadal length, the dentition may be divided into two negatively correlated segments: an anterior segment and a more distal postcanine segment (Kieser and Groeneveld, 1986b). Furthermore, available evidence suggests that the odontogenetic epithelium of the upper jaw is derived from four separate zones.…”

Section: Size and Shape Asymmetrymentioning

confidence: 97%

A new perspective on fluctuating odontometric asymmetry in South African Negroes

Groeneveld

Kieser

1991

American J Hum Biol

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The present communication introduces a novel statistical method by means of which fluctuating odontometric asymmetry may be broken up into two components: shape and size. This method is then applied to the odontometric data of 106 urban South African Negroes in order to test the postulate that there might be a difference between the levels of shape and size asymmetry. The data show that both components are present. Additionally, it is shown that there are no arcadal differences in the magnitudes of size or shape asymmetry. However, size asymmetry predominates in the anterior dental segment of the maxilla while shape asymmetry predominates in the posterior segment. In contrast, shape is the dominant component of asymmetry in the anterior mandibular teeth while size asymmetry predominates in the postcanine teeth. The present analysis does not show shape to be a superior measure of environmental stress compared to size asymmetry.

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“…Developmentally, anthropometric asymmetry could be viewed as variation in growth about the median plane. Most studies have focused on dental asymmetry (Bailit, Workman, Miswander et al 1970, Doyle and Johnston 1977, Noss, Scott, Potter et al 1983, Sofaer 1979, Townsend 1983, Kieser, Groeneveld and Preston 1986, Leamy 1986, which re¯ects patterns that are not necessarily characteristic of the post-cranial skeleton and soft tissues. Increased asymmetry of the post-cranial skeleton is associated with congenital anomalies, postnatal growth failure, mental retardation, and decreased biochemical genetic heterozygosit y (Moseley, Moloshok andFreiberger 1966, Woolf andGianas 1976, Variation in asymmetry associated with laterality of function in humans is similar to the trend reported for other mammals (S. Kimura, Kitagawa, Takeuchi et al 1975, K. Kimura, Singh 1972, Tanaka and Morita 1977.…”

Section: Introductionmentioning

confidence: 98%

Anthropometric asymmetry in chronically undernourished children from Southern Mexico

Little

Buschang

Malina

2002

Annals of Human Biology

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In previous studies, environmental stress has been associated with increased structural asymmetry, indicating differential rates of development on either side of the median plane. To analyse the effect of environmental stress upon anthropometric asymmetry, six bilateral measurements and one derived measurement were compared between chronically mild-to-moderately undernourished school children (7-13 years of age) and a well-nourished control sample (5-35 years of age). The undernourished sample was from a subsistence agricultural community in Southern Mexico. The well-nourished comparison (control) sample was middle class, White children and young adults in Texas. Anthropometric asymmetry of the skeleton was not consistently increased in the undernourished school children compared to the well-nourished controls. Arm and estimated mid-arm muscle circumferences had significantly increased asymmetry, but these differences are likely due more to laterality in function or physical work than to undernutrition. Genetic influences are hypothesized to underlie skeletal asymmetry (i.e. differences in development on either side of the median plane).

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Fluctuating dental asymmetry as a measure of odontogenic canalization in man

Cited by 47 publications

References 40 publications

Prenatal Psychological Stress, Dermatoglyphic Asymmetry and Pregnancy Outcome in the Pigtailed Macaque (<i>Macaca nemestrina</i>)

Prenatal Psychological Stress, Dermatoglyphic Asymmetry and Pregnancy Outcome in the Pigtailed Macaque (<i>Macaca nemestrina</i>)

A new perspective on fluctuating odontometric asymmetry in South African Negroes

Anthropometric asymmetry in chronically undernourished children from Southern Mexico

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