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目的对个别正常者的牙弓与基骨弓匹配性进行研究,以期指导临床治疗。方法选取30例个别正常患者并拍摄锥形束CT,将牙弓与基骨弓标志点坐标进行数学处理,并通过统计学分析建立上下颌牙弓匹配的数学方程,以及牙弓与基骨弓的匹配数学方程。结果上下颌牙弓在尖牙区及第二磨牙区的宽度、深度有很强的相关性(r_(尖牙深度)=0.967,r_(尖牙宽度)=0.949,r_(磨牙深度)=0.948,r_(磨牙宽度)=0.942),上下颌基骨弓在尖牙区的深度与宽度匹配关系较弱(r_(上颌尖牙深度)=0.922,r_(上颌尖牙宽度)=0.701,r_(下颌尖牙深度)=0.971,r_(下颌尖牙宽度)=0.629),在第二磨牙区的宽度与深度有很强的相关性(r_(上颌磨牙深度)=0.973,r_(上颌磨牙深度)=0.988,r_(下颌磨牙深度)=0.971,r_(下颌磨牙宽度)=0.976)。结论上下颌牙弓、基骨弓在尖牙区及第二磨牙区的宽度、深度存在匹配关系。
Objective To study the matching of the dental arch and the basement arch of individual normal subjects in order to guide the clinical treatment. Methods Thirty patients with normal pterygium were selected and cone beam computed tomography (CT) was performed. The coordinates of dental arch and basement arch were calculated. The mathematical equations of maxillary and mandibular arch matching were established. The dental arch and base bone Bow Matching Mathematic Equation. Results The width and depth of the maxillary and mandibular arches in the canine area and the second molar area were strongly correlated (r_ (canine depth) = 0.967, r_ (canine width) = 0.949, r_ (depth of molars) = 0.948 , r_ (width of molars = 0.942). The depth and width of the maxillary and mandibular orthodontic arch were weakly matched (r_ (maxillary canine) = 0.922, r_ (maxillary canine width) = 0.701, r_ The maxillary molar depth was 0.971, the maximal molar width was 0.629, and the width and depth of the second molar area were very close (r_ (maxillary molar depth) = 0.973, r_ (maxillary molar depth) = 0.988, r_ (depth of mandibular molars) = 0.971, r_ (mandibular molars width) = 0.976). Conclusions The width and depth of the maxillary and mandibular dental arch and the basement arch in the canine area and the second molar area are matched.