Journal: Drug Invention Today

Article Id: JPRS-Pcol-00002536
Title: Correlation of developmental evolution between jaw and teeth - A comparative anatomy
Category: Pharmacology
Section: Research Article
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    Introduction: The skull is the most complex hard tissue component of the human body and performs key elements of the feeding process including the capture, initial processing (chewing), and ingurgitation (swallowing) of food. The skull’s complexity means that it is the most likely part of the skeleton to reflect measurable degrees of evolutionary and environmental influences. Learning evolutionary changes in jaw would help us in setting of the teeth. In this study, we aim to investigate and analyze the correlation of developmental evolution between jaw and teeth and to make a comparative study. Material and Methods: Adult dry human skulls of the Homo sapiens, i.e., humans, Rattus norvegicus (rat), Gallus gallus domesticus (domestic fowl), Rep, Rana tigrina (Indian bullfrog), and Barracuda (fish) were obtained, processed, and used for the study. This head part of the animals was decapitated and processed for cleaning and degreasing procedures for skeleton bone preparation. The processed head skeletons were analyzed and photographed for jaw and teeth arrangements between different species. According to the visual appearances, the evolution of tooth and jaws of the observed specimens was correlated. Results: A detailed description of the adult morphology and ontogeny of the jaw, dentary, and teeth of the species H. sapiens, R. norvegicus, G. gallus domesticus, Hemidactylus frenatus, R. tigrina, and Barracuda have structurally altered jaw and teeth. It is followed by the description of homologous structures in all the species. Mention is made of the distinctive features in the descriptions of lower jaws, dentaries, and teeth of individuals from H. sapiens. Conclusion: An understanding of the developmental basis for the evolved differences between jaw and teeth in different anatomical and phylogenetic contexts brings complementary information to our knowledge of odontogenic mechanisms.

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    Author(s) Name:

    K. Akshaya1 , K. Yuvaraj Babu2 , Karthik Ganesh Mohanraj 2 *

    Affiliation(s) Name:

    1 Department of Anatomy, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India,

    2 Department of Anatomy, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India

    *Corresponding Author: Karthik Ganesh Mohanraj, Department of Anatomy, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, 162, Poonamallee High Road, Chennai - 600 077, Tamil Nadu, India.

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    Author:

    K. Akshaya1 , K. Yuvaraj Babu2 , Karthik Ganesh Mohanraj 2 *

    Title:Correlation of developmental evolution between jaw and teeth - A comparative anatomy
    Journal:Drug Invention Today
    Vol(issue):10 (Oct)
    Year:2018
    Page No: (1965-1968)
  • Experimental Methods Keywords

    Methodology:Developmental evolution
    Research Materials:Jaw ,Teeth

Keywords

Evolution Jaw Odontogenic mechanisms Phylogeny Teeth

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