Retromolar foramen of the human mandible
Identifieur interne : 000372 ( Istex/Curation ); précédent : 000371; suivant : 000373Retromolar foramen of the human mandible
Auteurs : Nancy Suzanne Ossenberg [Canada]Source :
- American Journal of Physical Anthropology [ 0002-9483 ] ; 1987-05.
English descriptors
- KwdEn :
- Accessory, Accessory canals, Accessory mandibular foramen, Adolescent cohort, Adolescent peak, Aleut, Anterior opening, Better evidence, Buccal, Buccal nerve, Cadaveric dissections, Canal, Case report, Circumpolar populations, Coronoid process, Cranial variants, Descriptive statistics, Eskimo, Ethnohistorical studies, Facial skeleton, First molar, Foramen, Genetic differences, High frequency, Higher frequency, Higher incidence, Human mandible, Intertrait correlation, Large series, Mandible, Mandibular, Mandibular foramen, Masticatory strength, Molar, Molar roots, Molar teeth, Mylohyoid bridge, Neurovascular structures, Nonmetric cranial traits, Northeast asia, Northern indians, Oral surg, Ossenberg, Panoramic radiographs, Plains indians, Population differences, Population sample, Present study, Quantitative genetics, Retromolar, Retromolar canal, Retromolar foramen, Retromolar fossa, Retromolar triangle, Rhesus macaques, Skeletal specimens, Statistical significance, Supernumerary canals, Temporal crest, Temporal crest canal, Temporalis tendon, Theoretical model, Third molar, Total series, Trait, Trigeminal nerve, Unilateral occurrences, Variant, Wire probe.
- Teeft :
- Accessory, Accessory canals, Accessory mandibular foramen, Adolescent cohort, Adolescent peak, Aleut, Anterior opening, Better evidence, Buccal, Buccal nerve, Cadaveric dissections, Canal, Case report, Circumpolar populations, Coronoid process, Cranial variants, Descriptive statistics, Eskimo, Ethnohistorical studies, Facial skeleton, First molar, Foramen, Genetic differences, High frequency, Higher frequency, Higher incidence, Human mandible, Intertrait correlation, Large series, Mandible, Mandibular, Mandibular foramen, Masticatory strength, Molar, Molar roots, Molar teeth, Mylohyoid bridge, Neurovascular structures, Nonmetric cranial traits, Northeast asia, Northern indians, Oral surg, Ossenberg, Panoramic radiographs, Plains indians, Population differences, Population sample, Present study, Quantitative genetics, Retromolar, Retromolar canal, Retromolar foramen, Retromolar fossa, Retromolar triangle, Rhesus macaques, Skeletal specimens, Statistical significance, Supernumerary canals, Temporal crest, Temporal crest canal, Temporalis tendon, Theoretical model, Third molar, Total series, Trait, Trigeminal nerve, Unilateral occurrences, Variant, Wire probe.
Abstract
Analysis of retromolar foramen (RMF) in a large series of mandibles (N 2500) was undertaken to provide descriptive statistics for this variant. RMF of diameter 0.5 mm or greater were scored. Consistent with other data on accessory canals in the facial skeleton, RMF was found to occur more commonly in native populations of North America than in other populations (Africa, Europe, India, northeast Asia). The ratio of bilateral to unilateral occurrences was shown to increase with population incidence, a pattern consistent with the theoretical model of an epigenetic (threshold “quasicontinuous”) variant. Male‐female differences were not found. Age profiles were characterized by a marked peak in the adolescent cohort. In some populations RMF showed a positive intertrait correlation with accessory mandibular foramen and with accessory mental foramen, but correlations with presence/absence of third molar and three‐rooted first molar were not found. With refinements in scoring criteria and, ideally, better evidence of its heritability. RMF should be useful along with other minor cranial variants for ethnohistorical studies.
Url:
DOI: 10.1002/ajpa.1330730112
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type="eISSN">1096-8644</idno><imprint><biblScope unit="vol">73</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="119">119</biblScope><biblScope unit="page" to="128">128</biblScope><biblScope unit="page-count">10</biblScope><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>New York</pubPlace><date type="published" when="1987-05">1987-05</date></imprint><idno type="ISSN">0002-9483</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0002-9483</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Accessory</term><term>Accessory canals</term><term>Accessory mandibular foramen</term><term>Adolescent cohort</term><term>Adolescent peak</term><term>Aleut</term><term>Anterior opening</term><term>Better evidence</term><term>Buccal</term><term>Buccal nerve</term><term>Cadaveric dissections</term><term>Canal</term><term>Case report</term><term>Circumpolar populations</term><term>Coronoid process</term><term>Cranial variants</term><term>Descriptive statistics</term><term>Eskimo</term><term>Ethnohistorical studies</term><term>Facial skeleton</term><term>First molar</term><term>Foramen</term><term>Genetic differences</term><term>High frequency</term><term>Higher frequency</term><term>Higher incidence</term><term>Human mandible</term><term>Intertrait correlation</term><term>Large series</term><term>Mandible</term><term>Mandibular</term><term>Mandibular foramen</term><term>Masticatory strength</term><term>Molar</term><term>Molar roots</term><term>Molar teeth</term><term>Mylohyoid bridge</term><term>Neurovascular structures</term><term>Nonmetric cranial traits</term><term>Northeast asia</term><term>Northern indians</term><term>Oral surg</term><term>Ossenberg</term><term>Panoramic radiographs</term><term>Plains indians</term><term>Population differences</term><term>Population sample</term><term>Present study</term><term>Quantitative genetics</term><term>Retromolar</term><term>Retromolar canal</term><term>Retromolar foramen</term><term>Retromolar fossa</term><term>Retromolar triangle</term><term>Rhesus macaques</term><term>Skeletal specimens</term><term>Statistical significance</term><term>Supernumerary canals</term><term>Temporal crest</term><term>Temporal crest canal</term><term>Temporalis tendon</term><term>Theoretical model</term><term>Third molar</term><term>Total series</term><term>Trait</term><term>Trigeminal nerve</term><term>Unilateral occurrences</term><term>Variant</term><term>Wire probe</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Accessory</term><term>Accessory canals</term><term>Accessory mandibular foramen</term><term>Adolescent cohort</term><term>Adolescent peak</term><term>Aleut</term><term>Anterior opening</term><term>Better evidence</term><term>Buccal</term><term>Buccal nerve</term><term>Cadaveric dissections</term><term>Canal</term><term>Case report</term><term>Circumpolar populations</term><term>Coronoid process</term><term>Cranial variants</term><term>Descriptive statistics</term><term>Eskimo</term><term>Ethnohistorical studies</term><term>Facial skeleton</term><term>First molar</term><term>Foramen</term><term>Genetic differences</term><term>High frequency</term><term>Higher frequency</term><term>Higher incidence</term><term>Human mandible</term><term>Intertrait correlation</term><term>Large series</term><term>Mandible</term><term>Mandibular</term><term>Mandibular foramen</term><term>Masticatory strength</term><term>Molar</term><term>Molar roots</term><term>Molar teeth</term><term>Mylohyoid bridge</term><term>Neurovascular structures</term><term>Nonmetric cranial traits</term><term>Northeast asia</term><term>Northern indians</term><term>Oral surg</term><term>Ossenberg</term><term>Panoramic radiographs</term><term>Plains indians</term><term>Population differences</term><term>Population sample</term><term>Present study</term><term>Quantitative genetics</term><term>Retromolar</term><term>Retromolar canal</term><term>Retromolar foramen</term><term>Retromolar fossa</term><term>Retromolar triangle</term><term>Rhesus macaques</term><term>Skeletal specimens</term><term>Statistical significance</term><term>Supernumerary canals</term><term>Temporal crest</term><term>Temporal crest canal</term><term>Temporalis tendon</term><term>Theoretical model</term><term>Third molar</term><term>Total series</term><term>Trait</term><term>Trigeminal nerve</term><term>Unilateral occurrences</term><term>Variant</term><term>Wire probe</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Analysis of retromolar foramen (RMF) in a large series of mandibles (N 2500) was undertaken to provide descriptive statistics for this variant. RMF of diameter 0.5 mm or greater were scored. Consistent with other data on accessory canals in the facial skeleton, RMF was found to occur more commonly in native populations of North America than in other populations (Africa, Europe, India, northeast Asia). The ratio of bilateral to unilateral occurrences was shown to increase with population incidence, a pattern consistent with the theoretical model of an epigenetic (threshold “quasicontinuous”) variant. Male‐female differences were not found. Age profiles were characterized by a marked peak in the adolescent cohort. In some populations RMF showed a positive intertrait correlation with accessory mandibular foramen and with accessory mental foramen, but correlations with presence/absence of third molar and three‐rooted first molar were not found. With refinements in scoring criteria and, ideally, better evidence of its heritability. RMF should be useful along with other minor cranial variants for ethnohistorical studies.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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