Comparative dental anatomy in newborn primates: Cusp mineralization

Paddock, Kelsey A; Zeigler, Larissa M; Harvey, Brianna M; Prufrock, Kristen A.; Liptak, Jordan M.; Ficorilli, Courtney M.; Hogg, Russell; Bonar, Christopher J.; Evans, Siân; Williams, Lawrence H.; Vinyard, Christopher J.; DeLeon, Valerie B.; Smith, Timothy D.

doi:10.1002/ar.24326

Cited by 3 publications

(1 citation statement)

References 45 publications

(125 reference statements)

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“…When it comes to the eruption and development of persistent and replaceable teeth, strepsirrhines differ most from anthropoids in terms of dental maturation and eruption [12]. In all primates, there is an ambiguous association between the relative dental volumes (RDVs) of temporary or persistent teeth and the relative neonatal mass.…”

Section: Discussionmentioning

confidence: 99%

Homology in the Rate and Pattern of Eruption of Primate Dentition: A Narrative Review

Duraisamy

2023

IJOFB

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Adult antemolar dentition of mammals may consist of both permanent and retained deciduous teeth. Certain animals, such as Homo sapiens and Tarsius, develop sequence homology of three sets of teeth. A technique for reconsidering dental homologies is presented, and a model of tooth loss is given, following a reassessment of dental homologies in most primates. An essential component of the theory of evolution is the study of homology and the discovery of related species, particularly phylogenetic reconstruction. Scopus, PubMed, Web of Science and Google Scholar were the electronic databases utilized to gather pertinent information that satisfied the eligibility requirements. The databases' key terms led to the discovery of 125 articles in total. Eighteen articles were discarded based solely on the article's title and abstract, and eighty-seven articles were eliminated because of duplication or irrelevant themes. There is a relationship between dental morphology and tooth function, however, physical similarities do not always imply homology. A conclusion was derived that, diet, life history, and phylogeny are the primary factors that influence the rate of tooth eruption.

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Section: Discussionmentioning

confidence: 99%

Homology in the Rate and Pattern of Eruption of Primate Dentition: A Narrative Review

Duraisamy

2023

IJOFB

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Developmental milestones in captive Galago moholi

McGovern‐Lind,

Proffitt,

King

et al. 2024

American J Primatol

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Systems of the body develop in a modular manner. For example, neural development in primates is generally rapid, whereas dental development varies much more. In the present study, we examined development of the skull, teeth, and postcrania in a highly specialized leaping primate, Galago moholi. Eighteen specimens ranging from birth to adult were studied. Bones, teeth, and the cranial cavity (i.e., endocast) were reconstructed with Amira software based on microCT cross‐referenced to histology. Amira was also used to compute endocast volume (as a proxy for brain size). Reconstructions of the wrist and ankle show that ossification is complete at 1 month postnatally, consistent with the onset of leaping locomotion in this species. Endocranial volume is less than 50% of adult volume at birth, ~80% by 1 month, and has reached adult volume by 2 months postnatal age. Full deciduous dentition eruption occurs by 2 weeks, and the young are known to begin capturing and consuming arthropods on their own by 4 weeks, contemporaneous with the timing of bone and ankle ossification that accompanies successful hunting. The modular pattern of development of body systems in Galago moholi provides an interesting view of a “race” to adult morphology for some joints that are critical for specialized leaping and clinging, rapid crown mineralization to begin a transitional diet, but perhaps more prolonged reliance on nursing to support brain growth.

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Mammalian Life History: Weaning and Tooth Emergence in a Seasonal World

Smith

2024

Biology

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The young of toothed mammals must have teeth to reach feeding independence. How tooth eruption integrates with gestation, birth and weaning is examined in a life-history perspective for 71 species of placental mammals. Questions developed from high-quality primate data are then addressed in the total sample. Rather than correlation, comparisons focus on equivalence, sequence, the relation to absolutes (six months, one year), the distribution of error and adaptive extremes. These mammals differ widely at birth, from no teeth to all deciduous teeth emerging, but commonalities appear when infants transit to independent feeding. Weaning follows completion of the deciduous dentition, closest in time to emergence of the first permanent molars and well before second molars emerge. Another layer of meaning appears when developmental age is counted from conception because the total time to produce young feeding independently comes up against seasonal boundaries that are costly to cross for reproductive fitness. Mammals of a vast range of sizes and taxa, from squirrel monkey to moose, hold conception-to-first molars in just under one year. Integrating tooth emergence into life history gives insight into living mammals and builds a framework for interpreting the fossil record.

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Comparative dental anatomy in newborn primates: Cusp mineralization

Abstract: This is the author manuscript accepted for publication and has undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as

Cited by 3 publications

References 45 publications

Homology in the Rate and Pattern of Eruption of Primate Dentition: A Narrative Review

Homology in the Rate and Pattern of Eruption of Primate Dentition: A Narrative Review

Developmental milestones in captive Galago moholi

Mammalian Life History: Weaning and Tooth Emergence in a Seasonal World

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