摘要
本文对新生至成年大鼠40只下颌髁突的生长发育进行了组织学和组织化学的动态观察,结果发现髁突结构应分为七层:滑膜样层、纤维组织层、生发层、过渡层、成熟层、移行层、骨小梁。髁突生长发育呈周期性变化,第一周期为新生～4周龄,第二周期为6～12周龄。每一周期首先是髁突软骨的生长阶段,然后是分化阶段。第一周期对矛颌畸形的预防有关;第二周期是矫治的最佳时期。髁颈在2～8周龄内发育完成。
The purpose of this study was to dynamically investigate the process of condylar gro-wth and development.40 rats were divided into 8 groups of 5 each.The age of each group was 0,2,4,6,8,10,12 and 24 weeks of age respectly.Histologic and histochemical observations on thecondyle were employed.The condyle could be divided into seven zones:(1)the synovialis.(2)the fibrous zone,(3)the germinal zone,(4)the transitional zone,(5)the maturalzone,(6)the transformation zone,(7)the trabeculae.The process of condylar growthand development showed two periods.The first was from 0 to 4-week-old;the second,from 6 to 12-week-old.Each of the periods consisted of proliferated and differentiatedstages.The proliferated stage of the first period was very important to prevent dentofacialdeformities and the second period was the optimal time for correcting dentofacial deform-ities.The condylar neck differentiated from 2 to 8-week-old.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
1990年第1期30-33,共4页
West China Journal of Stomatology
