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骨性Ⅱ类不同垂直骨面型的颅面骨三维形态特征研究

发布时间:2019-01-10 07:44  文章来源:笔耕文化传播
【摘要】:目的本研究采用CBCT为研究手段,对不同垂直骨面型的成年骨性II类错鄈畸形患者的颅面骨组织进行三维测量分析,将高角组、均角组及低角组各项测量指标进行对比,总结出不同垂直骨面型错鄈畸形患者的颅面骨三维结构特点,为正畸患者的诊断、治疗及预后提供科学的解剖学基础和理论支持。材料与方法按一定纳入标准选取2012年6月至2014年9月到天津市口腔医院正畸科就诊的骨性II类高角、均角、低角患者治疗前锥形束CT图像各30组。选取下颌骨测量项目10项,颅颧上颌复合体测量项目15项对比三组间各测量指标,分析出不同垂直骨面型患者的颅面骨结构特点。结果研究一显示:高角组患者Co-Go,Co-Co',Go-Go',∠Go-Me-Go',∠Go-N-Go',∠Go-S-Go',∠Co-Me-Co'较均角组患者小,∠Co-Go-Me较均角组患者大;低角组患者Co-Go,Go-Go',Go-Me,下颌联合深度,∠Go-Me-Go',∠Go-N-Go',∠Go-S-Go'较均角组患者大,∠Co-Go-Me较均角组患者小。高角组患者各项测量指标均较低角组小。研究二显示:高角组患者N-Ba,∠N-S-Ba,ANS-N,腭高较均角组大,Sm-Sm’,Tzl-Tzl’,Tz2-Tz2’,Ore-Ore’,Maz-Maz′,腭宽较均角组小;低角组Sm-Sm’,Tzl-Tzl’,Tz2-Tz2’,Ore-Ore’,Ori-Ori’,ANS-Ptm,Maz-Maz′,ANS-PNS,腭宽较均角组大,N-Ba,∠N-S-Ba,ANS-N,腭高较均角组小;高角组N-Ba,∠N-S-Ba,ANS-N,腭高较低角组大,Sm-Sm’,Tzl-Tzl’,Tz2-Tz2’,Ore-Ore’,Ori-Ori’,ANS-Ptm,Maz-Maz′,ANS-PNS,腭宽较低角组小。结论1.骨性II类高角患者具有较短的下颌升支高度,下颌骨后部较窄,开张较小;骨性II类低角患者具有较长的下颌升支高度和下颌体长度,下颌骨后部较宽,开张较大,下颌联合深度亦较大。随着下颌平面角的增大,下颌骨高度、长度和宽度基本呈增大的趋势,低角患者的下颌骨发育较高角患者相对不足。2.高角型患者的颅底角较低角型者大,不同垂直骨面型患者的前颅底长度和后颅底长度差异性不大,由于颅底角的增大导致高角型患者的颅底总体长度上略大。3.低角型患者的眶距及面中部宽度、上颌的宽度和长度、腭部的宽度和长度较高角型明显增大,在上颌的高度和腭高上,则高角型患者较低角型数值上更大些。4.总体来说,高角型患者的垂直向发育较低角型者明显,而低角型患者的水平向及矢状向的发育较高角型者更为明显。5.不同垂直骨面型患者的颅面结构具有不同的结构特征,在进行正畸治疗设计时,应充分加以考虑。
[Abstract]:Objective to measure and analyze the craniofacial bone tissue of adult patients with different vertical bone types of II malocclusion by means of CBCT, and to compare the measurement indexes among the high angle group, the average angle group and the low angle group. The three-dimensional structure of craniofacial bone in patients with malocclusion of different vertical bone types was summarized, which provided scientific anatomical basis and theoretical support for the diagnosis, treatment and prognosis of orthodontic patients. Materials and methods from June 2012 to September 2014, 30 CT images of conical bundle were selected from orthodontic department of Tianjin Stomatology Hospital. Ten items of mandibular measurement items and 15 items of craniozygomatic-maxillary complex measurement items were selected to compare each index of three groups, and the characteristics of craniofacial bone structure of patients with different vertical bone types were analyzed. Results the results showed that the Co-Go,Co-Co',Go-Go', Go-Me-Go', Go-N-Go', Go-S-Go', Co-Me-Co' in the high angle group was smaller than that in the average angle group. The Co-Go-Me was larger than that in the average angle group. In the low angle group, the depth of the mandibular joint of the patients with Co-Go,Go-Go',Go-Me, was larger than that of the patients of the average angle group, and that of the patients with the average angle group was smaller than that of the patients with the average angle group. All the indexes in high angle group were smaller than those in low angle group. The second study showed that the palate height of the patients with high angle group was larger than that of the average angle group, and the palatal width of Sm-Sm',Tzl-Tzl',Tz2-Tz2',Ore-Ore',Maz-Maz', group was smaller than that of the average angle group. The palatal width of Sm-Sm',Tzl-Tzl',Tz2-Tz2',Ore-Ore',Ori-Ori',ANS-Ptm,Maz-Maz',ANS-PNS, in the low angle group was larger than that in the average angle group, and the palate height was smaller than that in the average angle group. In the high angle group, N-Baand N-S-BaanS-Ns, the palatal height was larger than that in the low angle group, and the Sm-Sm',Tzl-Tzl',Tz2-Tz2',Ore-Ore',Ori-Ori',ANS-Ptm,Maz-Maz',ANS-PNS, palatal width was smaller than that in the low angle group. Conclusion 1. The height of mandibular ramus was shorter, the posterior part of mandible was narrower and the opening of mandible was smaller in patients with high angle of bone II. Patients with low angle of bone II have longer height of mandibular ramus and length of mandibular body, wider posterior part of mandible, larger opening of mandibular joint and greater depth of mandibular joint. With the increase of the mandibular plane angle, the height, length and width of the mandible showed an increasing trend, and the mandibular development of the patients with low angle was less than that of the patients with the higher angle. 2. The cranial base angle of the patients with high angle is larger than that of the patients with low angle. The length of the anterior skull base and the posterior skull base of the patients with different vertical bone face types are not different. The total length of the skull base of the patients with high angle type is slightly larger than that of the patients with high angle type because of the increase of the angle of the skull base. The orbital distance and midfacial width, the width and length of maxilla, the width and length of palate were significantly increased in patients with low angle type, and the values of height of maxillary and palatine were larger in patients with high angle type than those in low angle type. In general, the vertical development of high angle type is more obvious than that of low angle type, while the horizontal and sagittal development of low angle type is more obvious than that of high angle type. The craniofacial structures of patients with different vertical bone face types have different structural characteristics, which should be fully considered in the design of orthodontic treatment.
【学位授予单位】:天津医科大学
【学位级别】:硕士
【学位授予年份】:2015
【分类号】:R783.5

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