Arch form, tooth size, and occlusomandibular kinesis in the Ceboidea

Bibliographic Data

ID8312461
AuthorsMaurice R Zingeser (Oregon National Primate Research Center, corresponding author)
Year1976
Volume45
Issue2
Pages317-330
Publication date1976-09-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueAmerican Journal of Physical Anthropology (JOURNAL)
Journal identifiersISSN: 0002-9483 • E-ISSN: 1096-8644
PublisherWiley (PUBLISHER • GB)
DOI10.1002/ajpa.1330450217
PMID822733
OpenAlexW2166714605
LanguageEN
Citations received3
References cited12

Correlations between dental morphology, arch configuration, and jaw movement patterns were quantitatively investigated in 23 ceboid species to elucidate integrative aspects of occlusal functional anatomy in an adaptive and evolutionary context. Differential maxillary‐mandibular arch widths are primary in guiding lateral jaw movements. These movements are characterized according to their associated condylar shifts as either predominantly translatory or rotational. Predominantly translatory movements result from peripheral contact relationships between maxillary arches which are considerably wider posteriorly than their opposing mandibular arches. The greatest degree of mandibular movement is in the molar region in functional association with wide “primitive” maxillary molars, narrow mandibular molars, constricted maxillary intercanine widths, and narrow maxillary incisors. In contrast, predominantly rotational masticatory jaw movements result from differential arch widths which are greatest in the maxillary canine and incisor regions. Here most jaw movement is in the anterior segment and this is reflected in small maxillary‐mandibular molar width differences, a high degree of premolarization, wide‐set maxillary canine teeth, and wide maxillary incisors. Possible selectional factors in the putative evolution of rotational predominance in mastication from the more primitive translatory pattern are discussed

Arch · Archaeology · Biology · Geography · Anatomy · Evolution and Paleontology Studies · Ichthyology and Marine Biology · Paleontology and Evolutionary Biology

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