• Disease
  • Enamel
  • Enamel Hypoplasia
  • John R Lukacs

    Prominent publications by John R Lukacs

    KOL Index score: 18430

    This paper presents new data on enamel hypoplasia in the deciduous canine teeth of great apes. The enamel defect under consideration is known as localized hypoplasia of primary canines (LHPC), and is characterized by an area of thin or missing enamel on the labial surface of deciduous canine teeth (Skinner [1986a] Am. J. Phys. Anthropol. 69:59-69). Goals of this study are: 1) to determine if significant differences in the frequency of LHPC occur among three genera of great apes, and 2) ...

    Also Ranks for: Enamel Hypoplasia |  great apes |  deciduous teeth |  physiological stress |  lhpc prevalence
    KOL Index score: 14066

    The prevalence of enamel hypoplasia in the deciduous teeth of great apes has the potential to reveal episodes of physiological stress in early stages of ontogenetic development. However, little is known about enamel defects of deciduous teeth in great apes. Unresolved questions addressed in this study are: Do hypoplastic enamel defects occur with equal frequency in different groups of great apes? Are enamel hypoplasias more prevalent in the deciduous teeth of male or female apes? During ...

    Also Ranks for: Deciduous Teeth |  enamel hypoplasia |  great apes |  physiological stress |  dental crown
    KOL Index score: 10684

    Approaches to the origin, character, and decline of the Jorwe Culture of prehistoric western India rely heavily on the interpretation of substantial archaeological and paleoclimatological evidence. A prominent feature of the Jorwe Culture at Inamgaon is the Late Jorwe phase (period III; 1100–700BC) which experienced climatic deterioration (aridity), cultural degeneration and a subsistence shift toward nomadism. The archaeological perspective envisions culture change during the Late Jorwe ...

    Also Ranks for: Physiological Stress |  localized hypoplasia |  prehistoric india |  primary canines |  enamel defects
    KOL Index score: 8807

    When dental caries rates are reported by sex, females are typically found to exhibit higher prevalence rates than males. This finding is generally true for diverse cultures with different subsistence systems and for a wide range of chronological periods. Exceptions exist, but are not common. In this paper, we present new data for sex differences in dental caries rates among the Guanches (Tenerife, Canary Islands), summarize results of meta-analyses of dental caries prevalence, and ...

    Also Ranks for: Caries Prevalence |  hormonal fluctuations |  oral health women |  canary islands |  saliva sex
    KOL Index score: 8583

    Patterns of dental disease among Bronze Age people of the Indus Valley Civilization are currently based on early and incomplete reports by non-specialists. This deficiency precludes accurate diachronic analysis of dental disease and its relationship with increasing agriculturalism in the Indian subcontinent. The objective of this paper is to document prevalence of dental disease at Harappa (2500-2000 B.C.), Punjab Province, Pakistan, comparatively evaluate the Harappan dental pathology ...

    Also Ranks for: South Asia |  dental disease |  bronze age |  agricultural intensification |  caries prevalence
    KOL Index score: 8583

    This study is based on seven samples of school children (n = 516) from rural (five groups) and urban (two groups) settings in western Maharashtra, India. Height and weight were recorded for each subject. Intra-oral observation of the labial surface of maxillary and mandibular anterior teeth was conducted with a low power (3x) illuminated hand lens. Presence of enamel hypoplasia was recorded on a dental chart by drawing the size and location of the defect on the affected tooth. Data ...

    Also Ranks for: Enamel Hypoplasia |  deciduous teeth |  lhpc prevalence |  school children |  western india
    KOL Index score: 8349

    The purpose of this review is to provide a synoptic, critical evaluation of the evidence of, and potential etiological factors contributing to, sex differences in the expression of enamel hypoplasia (EH). Specifically, this review considers theoretical expectations and empirical evidence bearing on two central issues. The first of these is the impact of a theorized inherent male vulnerability to physiological stress on sex differences in EH. The second issue is the potential contribution ...

    Also Ranks for: Enamel Hypoplasia |  physiological stress |  great apes |  sex difference |  cultural characteristics
    KOL Index score: 8255

    Mean mesiodistal and buccolingual diameters are presented for deciduous teeth from the important. Chalcolithic site of Inamgaon (1400-700 B.C), a prehistoric farming community on the Deccan Plateau of western India. The deciduous teeth from Inamgaon are consistently larger than deciduous teeth of modern populations of European descent and smaller than the deciduous teeth of modern Australian aboriginals. Comparative data for prehistoric deciduous teeth are rare, especially for ...

    Also Ranks for: Deciduous Teeth |  prehistoric india |  crown dimensions |  ancient humans |  modern populations
    KOL Index score: 8097

    Deficient formation of enamel during the development of deciduous teeth results in defects known as enamel hypoplasia. Prior analysis of the prevalence of deciduous enamel hypoplasias (DEH) at the prehistoric site of Inamgaon (1400–700bc, western Maharashtra, India) revealed an association between increasing aridity, semi-nomadic subsistence, and a decrease in prevalence of deciduous enamel defects (Lukacs & Walimbe, 1998, 2000 a). Many questions regarding the prevalence of deciduous ...

    Also Ranks for: Enamel Hypoplasia |  lhpc prevalence |  deciduous teeth |  early jorwe |  sites india
    KOL Index score: 7361

    A sex difference in oral health has been widely documented through time and across cultures. Women's oral health declines more rapidly than men's with the onset of agriculture and the associated rise in fertility. The magnitude of this disparity in oral health by sex increases during ontogeny: from childhood, to adolescence, and through the reproductive years. Representative studies of sex differences in caries, tooth loss, and periodontal disease are critically reviewed. Surveys ...

    Also Ranks for: Sex Difference |  oral health |  dental caries |  tooth loss |  periodontal disease
    KOL Index score: 7283

    This investigation addresses two related questions about the origins and biological affinities of the Canary Islands' aboriginal inhabitants. First: With which North African populations do the pre-conquest inhabitants of the Canary Islands have their greatest affinities? Second: Does inter-island biological variability among the Canary Islanders, as has been suggested by other researchers (Hooton 1925, Schwidetzky 1963), imply that potentially different founding populations remained ...

    Also Ranks for: Canary Islands |  dental morphology |  population affinities |  north african |  preconquest inhabitants
    KOL Index score: 6502

    Enamel hypoplasia (EH) is a deficiency in enamel thickness due to physiological insults that compromise ameloblast function during the secretory phase of amelogenesis. The prevalence of EH in the deciduous teeth of nonhuman primates is largely unknown. One exception is the recent discovery of EH in the deciduous teeth of extant great apes which exhibit significant differences in prevalence between genera (Lukacs, 1999 a, 2000 a, Am. J. phys. Anthrop.110, 351-363). EH in deciduous teeth ...

    Also Ranks for: Enamel Hypoplasia |  deciduous teeth |  physiological stress |  eh prevalence |  primary canines
    KOL Index score: 6258

    Three hundred and sixty rhesus macaque specimens at the Caribbean Primate Research Center were examined for evidence of linear enamel hypoplasia (LEH). A previously unreported intertooth pattern in LEH was observed. Defects occur preferentially on the sectorial premolar of both males and females. Relative to other teeth, the sectorial premolar exhibits more prominent defects and is more likely to exhibit multiple defects. This pattern is unlike the human intertooth LEH pattern and unlike ...

    Also Ranks for: Enamel Hypoplasia |  macaca mulatta |  rhesus monkeys |  nonhuman primates |  intertooth distribution
    KOL Index score: 5911

    OBJECTS: This study was designed to examine the magnitude and etiology of gender differences in oral health. South Asia was selected for study because sex differences in caries rates exist in prehistory here, great cultural diversity provides context, and clinical reports document caries by gender.

    METHODS: A literature survey yielded extensive data on caries rates in India, Nepal, Bangladesh, and Sri Lanka. The percentage of individuals with caries (prevalence) and the mean number of ...

    Also Ranks for: Oral Health |  gender differences |  caries rates |  tooth loss |  sex factors


    John R Lukacs: Influence Statistics

    Sample of concepts for which John R Lukacs is among the top experts in the world.
    Concept World rank
    inamgaon #1

    Key People For Enamel Hypoplasia

    Top KOLs in the world
    Alan H Goodman
    enamel hypoplasia human biology laser ablation
    cedar grove dental crowding northern jordan
    George John Armelagos
    sudanese nubia infectious disease enamel hypoplasia
    Isaac Schour
    alveolar bone growth pattern tooth development
    Simon W Hillson
    enamel hypoplasia tooth wear dental caries
    Wan Kim Seow
    enamel hypoplasia primary dentition streptococcus mutans

    John R Lukacs:Expert Impact

    Concepts for whichJohn R Lukacshas direct influence:Enamel hypoplasia,  South asia,  Deciduous teeth,  Great apes,  Physiological stress,  North india,  Western india,  Tooth loss.

    John R Lukacs:KOL impact

    Concepts related to the work of other authors for whichfor which John R Lukacs has influence:Dental caries,  Oral health,  Tooth loss,  Enamel hypoplasia,  Deciduous teeth,  Periodontal disease,  Physiological stress.



    Is this your profile? manage_accounts Claim your profile content_copy Copy URL code Embed Link to your profile

    Department of Anthropology, University of Oregon, Eugene, OR 97403-1218, United States | Professor Emeritus, Department of Anthropology, University of Oregon, Eugene | Department of Anthropology, University of Oregon, Eugene, OR 97403-1218, USA | Uni