PDF(Pubmed)
Abstract：
A significant extent of researches in veterinary study have been focused on dental structure; however, there are scanty ones on the orientation and identification of their cusps. Therefore, the present article aimed to spot a light on arrangement pattern of dental cusps in the camel as a folivorous and graminivorous animal. This study was conducted on eight heads of adult, healthy camel of both sexes, collected from slaughter houses. To perform exact orientation of cusps of molar teeth, additional radiological and CT scans were performed on the mandible as a landmark that should facilitate the reading of cusps map. It was evident that, the cusps are arranged in crescentic appearance, seledontal form, with two cusps on each side, paracone and hypocone on the lingual surface and protocone and metacone on the vestibular aspect. Thus, camels cannot wear bite like equines, which would interfere with their constant chewing method. The camels\' dental cusps provide some of the finest examples of convergent evolution, which offer insights both into correlates between form and function, and into how the ability of euthomorphic cusps in intrapability and stabilization of food items and its comminution between formidable cusps and occlusal spillway in between. Further studies should be done on the brachydontteeth and tropospheric cusps to fill the functional anatomy gap of teeth, in addition to diversity of cusps form. This study is considered a basic comparative anatomical study for normal healthy dentition and forensic practice, in addition to its importance in detection of local aspects of dental problems in camels.
摘要：
兽医研究中的大量研究集中在牙齿结构上；然而，他们的尖点的方向和识别很少。因此,本文旨在揭示骆驼作为一种有叶和有草食性动物的牙尖排列方式。这项研究是在八个成年人的头上进行的，两性健康的骆驼,从屠宰场收集。为了准确定位磨牙的尖齿，在下颌骨上进行了其他放射学和CT扫描，作为标志，应有助于阅读尖点图。很明显，尖点以新月形的外观排列，seledontal形式，两边各有两个尖点，舌面的副锥和下锥，前庭的原锥和下锥。因此，骆驼不能像马一样咬人，这会干扰他们不断的咀嚼方法。骆驼的牙尖提供了一些收敛进化的最好例子，它们提供了对形式和功能之间相关性的见解，以及共形尖点在食品的内在性和稳定性中的能力，以及它在强大的尖点和咬合溢洪道之间的粉碎。应进一步研究短齿和对流层尖齿，以填补牙齿的功能解剖间隙，除了尖点形式的多样性。这项研究被认为是正常健康牙列和法医实践的基础比较解剖学研究，除了它在检测骆驼牙齿问题的局部方面的重要性。
