Mandibular growth in the rhesus monkey (Macaca mulatta)
Mandibular growth in the rhesus monkey (Macaca mulatta)
复制标题
恒河猴（Macaca mulatta）的下颌生长
DOI：
10.1002/ajpa.1330420104
复制
发表时间：
2005
影响因子：
2.8
通讯作者：
L. Graber
中科院分区：
文献类型：
--
作者：
J. McNamara;L. Graber
对 42 只恒河猴 (Macaca mulatta) 的下颌生长进行了定量和定性分析。根据牙列年龄（即婴儿、少年、青少年、青年）定义四组动物。在每个年龄，观察24周的生长情况。由于观察到某些动物处于多个发育阶段，因此研究了 57 个生长阶段。通过在下颌种植体上叠加连续头颅照片来收集生长增量数据。
恒河猴下颌骨的骨骼和牙槽成分的生长和重塑在幼猴中最大，而在连续的年龄组中则较少。在所有年龄组中都注意到支管的后移，而下颌体前部和下缘的骨沉积在年轻动物中最多。最明显的牙齿变化也发生在年幼的动物身上，而青少年和成年动物的牙列通常更稳定。
这项研究表明，正常下颌生长的速度和方向随动物年龄的不同而变化。此外，下颌生长在四个定义的成熟水平上进行量化，以提供一组说明正常下颌生长的值。这些值也可以用作实验研究的控制数据。
Mandibular growth of 42 rhesus monkeys (Macaca mulatta) was analyzed quantitatively and qualitatively. Four groups of animals were defined according to dentitional age (i.e., infant, juvenile, adolescent, young adult). At each age growth was observed for a 24 week period. Since some animals were observed at more than one stage of development, 57 periods of growth were studied. The growth incremental data were collected by superimposing serial cephalograms on mandibular implants.
Growth and remodeling of both the skeletal and dento-alveolar components of the rhesus mandible were greatest in the infant monkeys and were less in successive age groups. Posterior relocation of the ramus was noted in all age groups while bone deposition on the anterior and inferior borders of the mandibular body was greatest in the younger animals. The most pronounced dental changes also occurred in the younger animals while the dentitions of the adolescent and adult animals were generally more stable.
This study demonstrates that the rate and direction of normal mandibular growth varies with the age of the animal. Furthermore, mandibular growth is quantified at four defined maturational levels to provide a set of values illustrating normal mandibular growth. These values can also be used as control data for experimental studies.