Vagner V D, Konev V P, Korshunov A S, Kuryatnikov K N, Skurikhina A P
Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia.
Omsk State Medical University, Omsk, Russia.
Stomatologiia (Mosk). 2021;100(3):19-24. doi: 10.17116/stomat202110003119.
It is necessary to study the human enamel prisms size at different periods of postpartum ontogenesis by atomic force microscopy.
The study involved 94 males which were divided into groups by age: 15-20, 21-30, 31-40, 41-50, 51-60 years old, each examined male had one 3.8 or 4.8 tooth removed (from the fracture line in the region angle of the mandible, according to orthodontic indications) for medical reasons. The shape, roughness, length and width of the enamel prisms were studied in the Image Analysis NT-VDT program according to the method of Omsk State Medical University.
The enamel prisms structure at all ages has a regular, ordered shape with 6-sided and 7-sided figures. The most constant structure occurs at the age group of 41-50, 51-60 years. The fastest enamel prisms growth occurs in the direction that increases the prism length at all ages. Growth on a plane which increases the prism width is slow at 41-50 years. It is catching up with the growth rate of enamel prisms in length at 51-60 years old. Enamel prisms at 15-20, 21-30 years old stretch faster in the horizontal direction.
In maturation process, due to correct and harmonious growth, enamel prisms are timely modified from pyramidal form in the early postpartum period to a prismatic form in the late postpartum period of ontogenesis.
有必要通过原子力显微镜研究产后个体发育不同时期的人类牙釉质棱柱大小。
该研究涉及94名男性，按年龄分组：15 - 20岁、21 - 30岁、31 - 40岁、41 - 50岁、51 - 60岁，因医疗原因，每位接受检查的男性拔除一颗3.8或4.8的牙齿（从下颌角区域的骨折线处，根据正畸指征）。根据鄂木斯克国立医科大学的方法，在图像分析NT - VDT程序中研究牙釉质棱柱的形状、粗糙度、长度和宽度。
所有年龄段的牙釉质棱柱结构均具有规则、有序的形状，呈六边形和七边形。最稳定的结构出现在41 - 50岁、51 - 60岁年龄组。在所有年龄段，牙釉质棱柱最快的生长方向是增加棱柱长度的方向。在41 - 50岁时，增加棱柱宽度的平面上的生长较慢。在51 - 60岁时，其生长速度赶上了牙釉质棱柱长度的生长速度。15 - 20岁、21 - 30岁的牙釉质棱柱在水平方向伸展更快。
在成熟过程中，由于正确且协调的生长，牙釉质棱柱在产后早期从金字塔形及时转变为产后个体发育后期的棱柱形。
