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cementum n.1.【解剖學】牙骨質。2.黏固粉,水泥。

cemetery

Results : all the five indexes ( dental attrition , contact area , the index of dentine marrow cavity , the thickness of cementum of root , the diaphaneity of dentine of root ) revealed a highly interrelated relationship with age . regression height was significant when the multiple regression equation , which was formulated with these five indexes and age and used to judge the age was statistically analyzed 結果:牙齒的磨耗、接觸區面積、牙本質髓室指數、根尖牙骨質的厚度、根尖牙本質透明均反映出與年齡高度相關關系,用這5個指標與年齡所建立的判別年齡的多元回歸方程經統計學分析,回歸高度顯著。

Methods : we have divided the 636 molars ( without dental caries or pathological changes of root ) collected in school of forensic medicine and stomatological hospital in shanxi medicine university into four groups : maxl , max2 , manl , man2 , and selected 5 indexes closely related to changes of dental age ( dental attrition , contact area , the index of dentine marrow cavity , the thickness of cementum of root , the diaphaneity of dentine of root ) , and proposed the grading standard and scoring standard date processing and statistical analysis after measuring the teeth of the four groups 方法:從山西醫科大學法醫學院及口腔醫院收集的636磨牙(無齲壞、無根尖病變)分為max1 、 max2 、 man1 、 man2四組,根據牙齒的增齡變化特點,篩選了5個與牙齡變化密切相關的指標(牙齒的磨耗、接觸區面積、牙本質髓室指數、根尖牙骨質的厚度、根尖牙本質透明) ,提出了指標的分級標準和評分標準,對各組的牙齒測量后進行數據處理和統計分析。