Sexual Dimorphism in the Buccolingual Tooth Diameter

Garn, Stanley M.; Lewis, Arthur B.; Kerewsky, Rose S.

doi:10.1177/00220345660450064301

Cited by 112 publications

(55 citation statements)

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“…However, some other studies have reported no sexual disparities for mesiodistal tooth width [38][39][40][41] . In relation to mesiodistal and buccolingual crown diameters, current study showed sexual disparities, which is consistent with published studies for various ethnic groups 9,11,[42][43][44][45]46) . Current study showed norms for diagonal crown diameters where male teeth were larger than female.…”

Section: Discussionsupporting

confidence: 92%

Geomorphometrics of Tooth Size and Arch Dimension Analysis by Conventional Digital Caliper and Digital Stereomicroscope to Establish Standard Norms for the Pakistani Population

Shahid

Alam

Khamis

et al. 2015

J. Hard Tissue Biology.

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In order to establish standard norms for the Pakistani population, we investigated the geomorphometrics of tooth size and arch dimension using a conventional digital caliper (DC) and a digital stereomicroscope (SM). The sample consisted of 128 subjects ranging in age from 18 to 24 years. A total of 44,155 variables were measured. Dental models of each subject for maxillary and mandibular arches were scanned via Hirox digital stereomicroscope for the fabrication of the digital models, and the geomorphometrics of tooth size and arch dimensions were measured via SM scanned digital models. All the measurements were also carried out via DC on plaster dental models. Sex differences and changes associated with methods were assessed, and interrelationships between different variables were explored within the study group. For the data obtained by DC and SM techniques, the men had significantly larger arch dimensions and geomorphometrics of tooth size than the women did. There were no significant disparities observed between the techniques. The developed norms for the mesiodistal, buccolingual, diagonal tooth sizes and arch dimension had significantly greater values for males in relation to females (*pd" 0.05 to ***pd" 0.001). This study has established a new reference database of tooth size and arch dimensions via both DC and digital SM for first time on Pakistani population. These norms will be helpful for clinical treatment planning in dentistry. Contemporaneously, the norms will be of great value to forensic dentists and dental anthropologists for making comparisons within and between different populations.

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Section: Discussionsupporting

confidence: 92%

Geomorphometrics of Tooth Size and Arch Dimension Analysis by Conventional Digital Caliper and Digital Stereomicroscope to Establish Standard Norms for the Pakistani Population

Shahid

Alam

Khamis

et al. 2015

J. Hard Tissue Biology.

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“…Regarding the difference in tooth size between men and women, MD and BL dimensions were smaller in females than males in almost all teeth, corroborating with previous studies [20,24].…”

Section: Discussionsupporting

confidence: 91%

Sexual dimorphism involved in the mesiodistal and buccolingual dimensions of permanent teeth

Sabóia¹,

Tannure

Luiz

et al. 2013

d3000

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Studies indicate that tooth crown diameters are clinical markers for sex differentiation. Therefore, the aim of this study was to assess the degree of sexual dimorphism in different teeth. Maximum mesiodistal (MD) and buccolingual (BL) dimensions of 2400 permanent teeth from 100 pretreatment orthodontic dental study casts and clinical records (50 males and 50 females) from the Department of Pediatric Dentistry and Orthodontics, Federal University of Rio de Janeiro, Brazil, were examined. Comparison of the MD and BL dimensions between males and females was performed using the Student's t test with alpha 0.05, effect size, and discriminant function analysis. Comparisons in MD and BL widths between sexes demonstrated that the combined mean in the female group presented reduction when compared with the male group, except for the BL dimension of tooth 26. In regard to the MD dimensions, statistically significant differences were observed in various dental groups. The greatest sexual dimorphism was observed in the left mandibular canine (p<0.001) with effect size over 0.8 (0.94), which characterizes large effect. In BL dimension, numerous teeth demonstrated statistical differences between the sexes. Our findings reinforced the magnitude of sexual dimorphism in tooth size, and, in addition, highlighted the differences in specific dental groups.

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“…Except for the Kadena sample, which is the most dimorphic of the five Ryukyu Island groups, the present findings of the pattern of sexual dimorphism are roughly consistent with those reported so far (e.g. Garn et al, 1966Garn et al, , 1967a. It is far from obvious why the Kadena sample shows highly dimorphic dental features; however, it is well known that the degree of dimorphism in permanent dentition is variable in different population groups (Hillson, 1996).…”

Section: Discussionsupporting

confidence: 91%

“…According to Garn et al (1964Garn et al ( , 1966, moreover, sexual dimorphism in mesiodistal crown diameters varied between 6% (canines) to 3% (incisors), with slightly higher figures for buccolingual dimorphism. Except for the Kadena sample, which is the most dimorphic of the five Ryukyu Island groups, the present findings of the pattern of sexual dimorphism are roughly consistent with those reported so far (e.g.…”

Section: Discussionmentioning

confidence: 99%

Metric dental diversity of Ryukyu Islanders: a comparative study among Ryukyu and other Asian populations

Toma

Hanihara

Sunakawa

et al. 2007

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Mesiodistal and buccolingual crown diameters were examined to describe and compare patterns of metric dental variation in five modern samples from the Ryukyu Island chain (Miyako, Ishigaki, Tokunoshima, and two samples from Okinawa Island). Principal component analysis applied to two separate datasets, raw measurement and standardized (C-score) data, for 32 Asian and Pacific samples, including the five Ryukyu Islander series, produced an overall size factor and three shape factors (relative size of mesiodistal diameters versus buccolingual diameters and two kinds of front-back polarity). Ryukyu Islanders have similar crown dimensions as those of the predominant eastern Asian groups, characterized by mesodont dentition. In terms of shape factors, Ryukyu Islanders are distinctive among eastern Asian population groups on the one hand, and show diversity among themselves on the other hand. The inter-regional variation of Ryukyu Island groups estimated by F st falls within the range of 4-6% of the total variance, which is greater than those of Arctic population samples (Aleuts and Eskimos). The average within-group variance of the Ryukyu Island series measured by the R-matrix method (intra-regional variation) is compatible with those of East and Northeast Asians, Micronesians, and Polynesians. These findings suggest that differential patterns of long-term gene flow from an outside source, geographical isolation, and genetic drift in each island of the Ryukyu Island chain has produced the morphological diversification of modern Ryukyu Islanders.

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Sexual Dimorphism in the Buccolingual Tooth Diameter

Cited by 112 publications

References 0 publications

Geomorphometrics of Tooth Size and Arch Dimension Analysis by Conventional Digital Caliper and Digital Stereomicroscope to Establish Standard Norms for the Pakistani Population

Geomorphometrics of Tooth Size and Arch Dimension Analysis by Conventional Digital Caliper and Digital Stereomicroscope to Establish Standard Norms for the Pakistani Population

Sexual dimorphism involved in the mesiodistal and buccolingual dimensions of permanent teeth

Metric dental diversity of Ryukyu Islanders: a comparative study among Ryukyu and other Asian populations

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