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上颌磨牙倾斜度与上颌第三磨牙阻生位置及生长方向的相关性分析 被引量:1

Correlation Analysis of Maxillary Molars Inclination with Impacted Position and Growth Direction of Maxillary Third Molar
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摘要 目的:测量安氏Ⅰ类均角型患者上颌磨牙近远中倾斜度,探讨其与上颌第三磨牙阻生深度、阻生方向及生长方向的相关性,以期对临床诊疗提供参考。方法:选取67例安氏Ⅰ类均角型患者治疗前锥形束计算机断层扫描(cone-beam computed tomograghy,CBCT)资料,根据第三磨牙阻生深度分为正常萌出型、中位阻生型和低位阻生型3组;根据第三磨牙阻生方向分为近中型和远中型两组,以腭平面为基准平面,测量上颌磨牙的倾斜度,将数据进行统计学分析。结果:(1)不同性别各项测量数值无显著差异(P>0.05);(2)上颌第三磨牙阻生深度不同及阻生方向不同时,上颌第一磨牙以及第二磨牙的倾斜度均存在显著差异(P<0.05);(3)上颌第一磨牙及第二磨牙倾斜度与第三磨牙阻生深度呈显著正相关(P<0.05),与第三磨牙生长方向相关性不显著(P>0.05),上颌第一磨牙倾斜度与第三磨牙阻生方向呈显著正相关(P<0.05);(4)上颌第三磨牙的阻生深度与其生长方向相关性不显著(P>0.05),与其阻生方向呈显著正相关(P<0.05)。结论:第三磨牙阻生越低位,上颌磨牙越向远中倾斜;第三磨牙阻生方向越向近中,上颌第一磨牙越向远中倾斜。 Objective:To measure the mesial and distal inclination of maxillary molars in patients with class I,and to explore its correlation with the impacted depth and impacted direction and growth direction of maxillary third molars.Methods:The CBCT data of 67 patients with Angle class I were selected before treatment.According to the impacted depth of the third molar,they were divided into three groups:normal eruption type,medium position type,and low position type.According to the impacted direction of the third molar,it was divided into two groups:mesial type and distal type.Taking the palatal plane as the reference plane,the inclination of the maxillary molars were measured,and the data were statistically analyzed.Results:(1)There was no significant difference in the measured values between different gender groups(P>0.05).(2)When the impacted depth and impacted direction of maxillary third molars were different,there were significant differences in the inclination of maxillary first molars and second molars(P<0.05).(3)The inclination of maxillary first and second molars were positively correlated with the impacted depth of third molars(P<0.05),but not significantly correlated with the growth direction of third molars(P>0.05).The inclination of first molars was positively correlated with the impacted direction of third molars(P<0.05).(4)The impacted depth of maxillary third molar was not correlated with its growth direction(P>0.05),but positively correlated with its impacted direction(P<0.05).Conclusion:The lower the impacted of the third molar,the more distal inclination of the maxillary molar.The more mesial the impacted direction of the third molar,the more distally inclined the maxillary first molar.
作者 徐依山 李真真 吴瑶 司超 许竞予 余岭 张惠超 杨陆一 XU Yishan;LI Zhenzhen;WU Yao;SI Chao;XU Jingyu;YU Ling;ZHANG Huichao;YANG Luyi(Department of Orthodontics, Hospital of Stomatology, Jilin University, Changchun 130021, China)
出处 《口腔医学研究》 CAS CSCD 北大核心 2022年第6期518-522,共5页 Journal of Oral Science Research
基金 吉林省卫生与健康技术创新项目(编号:2020J050)。
关键词 磨牙倾斜度 磨牙阻生 第三磨牙 锥形束计算机断层扫描 molar inclination molar interruption third molar CBCT
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