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Analysis of interaction between nutritional and developmental instability in mediaeval population in Wrocław

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Gawlikowska-Sroka A. , Dąbrowski P. , Szczurowski J. , Staniowski T.

Anthropological Review

2013

tom 76

nr 1

51-62

In this paper, we test the hypothesis that indices of nutritional stress from enamel hypoplasia increase the incidence of indicators of developmental instability in fluctuating asymmetry, even in high social status individuals. The studied material consisted of a medieval sample of 58 skulls from the Wrocław area. Radiographs were taken in postero-anterior (P-A) and base projections. Images were scanned and calibrated by means of MicroStation 95 Academic Edition software, and measurements of the skull images were used to estimate fluctuating asymmetry. The presence of hypoplasia and caries was assessed using standard anthropological methods and all data was statistically analysed. The highest levels of fluctuating asymmetry were observed in the skull base region. Hypoplasia was observed in 40% and caries in 55.5%. Differences were noted in the level of fluctuating asymmetry in relationship to the presence or absence of hypoplasia, where a higher level predisposes individuals to enamel hypoplasia and a decline in buffering capacity, regardless of their socio-economic status.

Bilateral dentoalveolar asymmetries in female patients with adolescent idiopathic scoliosis

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Lewandowska J. , Opydo-Szymaczek J. , Mehr K. , Głowacki J.

2019

tom Vol. 21, no. 4

53--62

The aim of this cross-sectional research was to quantify left–right dentoalveolar fluctuating (FA) and directional asymmetries (DA) in patients with adolescent idiopathic scoliosis and to assess the relationship between these asymmetries and the side, location, and severity of scoliosis. Materials and methods: The study group comprised of 60 females aged 12–16 years, with idiopathic scoliosis, and 54 healthy controls. Measurements were made with the use of digital caliper on full-mouth dental casts. The following variables were measured from each subject: a shift of the incisor midline, left and right incisor overjet, deviation of canine and buccal segment relation as well as maxillary and mandibular arch chords. The data were statistically analyzed with significance taken as p < 0.05. Results: Statistically significant differences in the mean shift of the incisor midline, buccal segment relation on the left and canine deviation on the left between the control group and the study group were detected ( p = 0.0419, p = 0.0.458 and p = 0.0204, respectively). FA of the midline deviation and canine deviation were statistically significantly higher for subjects with IS, compared to healthy controls ( p = 0.0315 and p = 0.0415, respectively). Neither direction of the curve nor apical vertebra’s location or apical translation significantly affected the magnitude of dentoalveolar asymmetries. Conclusions: Our results confirmed that bilateral asymmetries are a common feature of the young females’ occlusion. Individuals with IS show higher tendency to Angle Class II malocclusion, as well as higher FA of incisor midline discrepancy and canine deviation, compared to the controls.