临床口腔医学杂志
臨床口腔醫學雜誌
림상구강의학잡지
JOURNAL OF CLINICAL STOMATOLOGY
2014年
10期
634-635,636
,共3页
先天缺牙%多生牙%锥形牙%相关分析
先天缺牙%多生牙%錐形牙%相關分析
선천결아%다생아%추형아%상관분석
hypodontia%supernumerary teeth%peg-shaped teeth%correlation analysis
目的：观察正畸患者中伴有恒牙先天缺失、多生牙和锥形牙或过小牙的发生率及分布，并分析其相关性。方法：随机抽取正畸患者800例，男260例，女540例，年龄12～40岁。通过石膏模型和曲面断层片统计先天缺牙、多生牙、锥形牙或过小牙的发生率及分布。通过分类变量的关联性来分析多生牙和锥形牙或过小牙与先天缺牙的相关性，假设检验采用列联表的独立性x2检验，并采用Pearson列联系数r来描述两变量关联程度。结果：800例中发生恒牙先天缺失100例，发生率为12．5％。常见的缺失牙位从多到少依次为下颌侧切牙、下颌第二前磨牙、下颌中切牙、上颌侧切牙、上颌第二前磨牙。多生牙的发生率为3．1％，锥形牙或过小牙占8．3％。通过分类变量的关联性分析得出，锥形牙或过小牙的发生与先天缺牙有相关性，Pearson列联系数r为0．173。结论：正畸患者中恒牙先天缺失的发生率为12．5％，最常见的缺失牙位是下颌侧切牙和下颌第二前磨牙；正畸患者中恒牙先天缺失和锥形牙或过小牙的发生具有相关性。
目的：觀察正畸患者中伴有恆牙先天缺失、多生牙和錐形牙或過小牙的髮生率及分佈，併分析其相關性。方法：隨機抽取正畸患者800例，男260例，女540例，年齡12～40歲。通過石膏模型和麯麵斷層片統計先天缺牙、多生牙、錐形牙或過小牙的髮生率及分佈。通過分類變量的關聯性來分析多生牙和錐形牙或過小牙與先天缺牙的相關性，假設檢驗採用列聯錶的獨立性x2檢驗，併採用Pearson列聯繫數r來描述兩變量關聯程度。結果：800例中髮生恆牙先天缺失100例，髮生率為12．5％。常見的缺失牙位從多到少依次為下頜側切牙、下頜第二前磨牙、下頜中切牙、上頜側切牙、上頜第二前磨牙。多生牙的髮生率為3．1％，錐形牙或過小牙佔8．3％。通過分類變量的關聯性分析得齣，錐形牙或過小牙的髮生與先天缺牙有相關性，Pearson列聯繫數r為0．173。結論：正畸患者中恆牙先天缺失的髮生率為12．5％，最常見的缺失牙位是下頜側切牙和下頜第二前磨牙；正畸患者中恆牙先天缺失和錐形牙或過小牙的髮生具有相關性。
목적：관찰정기환자중반유항아선천결실、다생아화추형아혹과소아적발생솔급분포，병분석기상관성。방법：수궤추취정기환자800례，남260례，녀540례，년령12～40세。통과석고모형화곡면단층편통계선천결아、다생아、추형아혹과소아적발생솔급분포。통과분류변량적관련성래분석다생아화추형아혹과소아여선천결아적상관성，가설검험채용렬련표적독립성x2검험，병채용Pearson렬련계수r래묘술량변량관련정도。결과：800례중발생항아선천결실100례，발생솔위12．5％。상견적결실아위종다도소의차위하합측절아、하합제이전마아、하합중절아、상합측절아、상합제이전마아。다생아적발생솔위3．1％，추형아혹과소아점8．3％。통과분류변량적관련성분석득출，추형아혹과소아적발생여선천결아유상관성，Pearson렬련계수r위0．173。결론：정기환자중항아선천결실적발생솔위12．5％，최상견적결실아위시하합측절아화하합제이전마아；정기환자중항아선천결실화추형아혹과소아적발생구유상관성。
Objective:The purpose of this study was to evaluate the prevalence and distribution of hypodontia/super-numerary teeth/peg-shaped teeth and the correlation with them. Method:the random cases of 800 orthodontic patients(260 males,540 females)between 12 to 40 Yrs. By observing the plaster cast and panoramic x-ray ,the prevalence and distribu-tion of hypodontia/supernumerary teeth/peg-shaped teeth or too-small teeth were statisticalled.Investigate the correlation be-tween each dental anomaly and hypodontia by the relevance of classification variables ,using the independence chi-aquare test,and describe the degree of correlation with Pearson contingency coefficient. Result:There are 100 cases of hypodontia in the 800 cases,The prevalence of hypodontia was 12.5%. the frequently missing tooth were the mandibular lateral incisor , the mandibular second premolar,the mandibular middle incisor,the maxillary lateral incisor,the maxillary second premolar decrease progressively. the prevalence of supernumerary teeth was 3.1%,the prevalence of peg-shaped teeth was 8.3%.Sta-tistically significant correlations were found between peg-shaped teeth and hypodontia ,Pearson contingency coefficient are 0.173. Conclusion:The prevalence of hypodontia was 12.5 %. The most frequently mossing tooth is the mandibular lateral incisor and the mandibular second premolar.There were the correlations between the incidence of peg-shaped teeth and hy-podontia.
