Korshunov Andrey, Vagner Vladimir, Konev Vladimir, Moskovskiy Sergey, Kuryatnikov Kirill, Skurikhina Anna, Yakovlev Vladislav, Nurakhmetova Adel
Department of Dentistry, Omsk State Medical University, Omsk, Russian Federation.
Department of the Organization of the Dental Service, Licensing and Accreditation, Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russian Federation.
Saudi Dent J. 2022 Jul;34(5):385-389. doi: 10.1016/j.sdentj.2022.05.002. Epub 2022 May 11.
This work aimed to study the rate and quality of maturation of the mineral component of retained teeth 3.8, 4.8 and lower jaw fragment of a human in connective tissue dysplasia in different periods of postpartum ontogenesis.
The study involved 102 men (76 with connective tissue dysplasia and 26 without connective tissue dysplasia) divided into groups by age: 31-40, 41-50, 51-60 years. One tooth 3.8, 4.8 and a fragment of the alveolar part of the lower jaw in the projection of teeth 3.8, 4.8 0.5*0.5 cm in size were extracted from each examinee for medical indications.
Low optical density values are observed at the age of 41-50 years, at the age of 51-60 years, indicating decreased mineral density and the presence of total areas of hypomineralization from the age 31-40 years in connective tissue dysplasia. At the age of 41-50, 51-60 years, at the boundary of connective tissue structures and periosteum, a pronounced sclerosis and deformation of delineation elements were observed; at the age of 31-40 years, the indicated changes were less pronounced. At the age of 31-40 years, the level of bone plate dissection has a local character, after 40 years, it has a generalized character.
Progressive osteoporosis of the mandible and incomplete amelogenesis are an obstacle to the correct and harmonious teething of the lower wisdom teeth after the age of 30.
本研究旨在探讨产后个体发育不同阶段结缔组织发育异常患者中，保留牙3.8、4.8及下颌骨片段矿物质成分的成熟速率和质量。
研究纳入102名男性（76名结缔组织发育异常患者和26名无结缔组织发育异常患者），按年龄分为31 - 40岁、41 - 50岁、51 - 60岁三组。因医学指征，从每位受试者口中拔除一颗3.8、4.8牙以及下颌骨在3.8、4.8牙投影处大小为0.5×0.5 cm的牙槽骨片段。
在41 - 50岁、51 - 60岁时观察到低光学密度值，表明矿物质密度降低，且在结缔组织发育异常患者中，从31 - 40岁起就存在矿化不足的总面积。在41 - 50岁、51 - 60岁时，在结缔组织结构与骨膜边界处，观察到轮廓元素明显硬化和变形；在31 - 40岁时，上述变化不太明显。在31 - 40岁时，骨板分离水平具有局部特征，40岁以后则具有全身性特征。
下颌骨进行性骨质疏松和釉质形成不完全是30岁以后下颌智齿正常萌出和协调萌出的障碍。
