上颌窦底至牙槽嵴高度的增龄性变化

Analysis of the distance from maxillary sinus base wall to alveolar crest of first maxillary molar with age

目的 :测量不同年龄上颌第一磨牙处牙槽嵴高度,探讨其随年龄变化的规律。方法 :随机选取288例成年患者,按照年龄分为青年、中年、老年3组,拍摄锥形束CT(cone-beam computed tomography,CBCT),通过Kavo eXam Vision软件测量上颌第一磨牙处牙槽嵴高度,采用SPSS16.0软件包对数据进行t检验。结果 :青年组牙槽嵴高度为(9.08±3.70)mm,中年组为(10.66±3.99)mm,老年组为(12.40±4.54)mm;各组组内男女牙槽嵴高度相比无显著差异(P>0.05),各组组间牙槽嵴高度相比有显著差异(P<0.05),且随年龄增大,牙槽嵴高度逐渐增大。结论 :患者性别与牙槽嵴高度的关系不大,患者年龄和牙槽嵴高度有一定关系。上颌后牙区种植患者需拍摄CBCT,了解该处牙槽嵴高度以及上颌窦的解剖结构,尤其是对年轻患者。

PURPOSE： To measure the height of the maxillary first molar alveolar crest in different age groups.METHODS： A total of 288 patients were divided into 3 groups： young age group（18-34 years）,middle age group（35-59years） and old age group（above 60 years）.They were selected to be scanned by cone-beam computed tomography（CBCT）,and the height of the first maxillary molar alveolar crest was measured though Kavo e Xam Vision software.The data was analyzed with SPSS16.0 software package for Student＇s t test.RESULTS： In young age group,the height of the maxillary first molar alveolar crest was（9.08±3.70） mm;middle age group,the height was（10.66±3.99） mm;and in old age group,the height was（12.40±4.54） mm.There was no significant difference between males and females in each group,but there were significant differences between different age group in the height of the maxillary first molar alveolar crest.CONCLUSIONS： The height of the maxillary first molar alveolar crest is increasing with the increase of age,but there is no difference between males and females.For patients undergoing implantation in maxillary posterior region,CBCT should be performed to determine the height of alveolar crest and anatomy of the maxillary sinus,especially for young patients.