上颌后牙牙根与毗邻解剖结构关系的锥形束CT分析  

Cone-beam CT analysis of the relationship between the roots of maxillary posterior teeth and their adjacent anatomical structures

作　　者：张云鹏[1,2] 文勇[1,2] 唐翠竹 张冰[1,2] 占发龙 徐欣[1,2] 

机构地区：[1]山东大学口腔医学院种植中心 [2]山东省口腔生物医学重点实验室,山东济南250012

出　　处：《山东大学学报（医学版）》2014年第10期66-71,共6页Journal of Shandong University:Health Sciences

基　　金：山东省财政专项基金(鲁财社指[2012]119号);国家自然科学基金(81300885);山东省自然科学基金(ZR2013HQ052;ZR2013HM086)

摘　　要：目的测量并分析上颌后牙牙根与毗邻解剖结构的位置关系,为临床治疗提供参考依据。方法从山东大学口腔医院CBCT数据库中选取符合纳入标准的患者资料120例,应用GALAXIS软件观察各牙根与上颌窦底的关系分型并统计各类型的发生率,测量根尖至上颌窦底的垂直距离和牙根中点至相邻牙槽骨外板的水平距离并进行统计学分析。结果根尖与上颌窦底有骨板相隔的类型发生率最高;上颌第二磨牙的近中颊根根尖至上颌窦底的垂直距离最短(P<0.05);第二前磨牙牙根和第二磨牙腭根根尖至上颌窦底的垂直距离最长(P<0.05);上颌第一磨牙的近中颊根距颊侧骨板的水平距离最近(P<0.05);上颌第一磨牙的腭根距腭侧骨板的水平距离最近(P<0.05)。结论上颌后牙牙根与上颌窦底及牙槽骨板关系密切,在治疗前应仔细观察;CBCT可以清晰显示上颌后牙区各解剖结构间的关系,适用于治疗前的精确诊断和设计。Objective To measure and analyze the positional relationship of maxillary posterior tooth roots and their adjacent anatomical structures in order to provide references for clinical treatment.Methods One hundred and twenty cases which met the inclusion criteria were chosen from CBCT database of Stomatology Hospital of Shandong Universi-ty.GALAXIS software was used to observe the classification of the relationship between the posterior maxillary tooth roots and the maxillary sinus floor,and to evaluate the incidence of various types.The vertical distance from the roots apical to the bottom of the maxillary sinus and the horizontal distance from root midpoint to the adjacent alveolar bone plate were measured and statistical analysis was carried out.Results The type that root apical and maxillary sinus was separated by bone plates had the highest incidence.The mesiobuccal root of maxillary second molar had the shortest ver-tical distance to the maxillary sinus （P〈0.05）;the palatal root of maxillary second premolar and second molar had the longest vertical distances to the sinus floor （P〈0.05）.The first molar mesiobuccal root was nearest to the buccal bone plate （P〈0.05）,and the first molar palatal root was nearest to the palatal bone plate （P〈0.05）.Conclusion Poste-rior maxillary tooth roots have a close relationship with the sinus floor and the alveolar bone plate,which should be noted in the clinical treatment.CBCT can show the relationship of posterior maxillary tooth roots and their adjacent anatomical structures clearly,and is suitable for accurate diagnosis and design before treatment.

关 键 词：锥形束CT 上颌窦 上颌后牙 解剖关系 

分 类 号：R782[医药卫生—口腔医学]