基于全景X线片长度预测前磨牙牙长。
Prediction of premolar tooth lengths based on their panoramic radiographic lengths.
作者信息
Yitschaky M, Haviv Y, Aframian D J, Abed Y, Redlich M
机构信息
Department of Orthodontics, Hebrew University--Hadassah School of Dental Medicine, P.O.B. 12272, Jerusalem, Israel 91120.
出版信息
Dentomaxillofac Radiol. 2004 Nov;33(6):370-2. doi: 10.1259/dmfr/31287277.
OBJECTIVE
Establishing a linear regression model for the determination of first premolar lengths based on panoramic radiographs.
MATERIALS AND METHODS
The real lengths of 112 first premolars extracted for orthodontic reasons were measured and compared with their panoramic lengths. The teeth were divided into four groups according to their intraoral quadrant locations (T14, T24, T34, T44) and regression analysis was conducted for each group.
RESULTS
A linear regression model for the prediction of tooth length (mm) based on the panoramic length was established (P < 0.0001): For group T14 the predicted length = (panoramic length x 0.698) + 2.61. For group T24 the predicted length = (panoramic length x 0.5056) + 7.844. For group T34 the predicted length = (panoramic length x 0.5075) + 9.282. For group T44 the predicted length = (panoramic length x 0.436) + 11.298.
CONCLUSION
Prediction of all first premolar lengths using their panoramic images is both feasible and reliable.
目的
基于全景X线片建立用于确定第一前磨牙长度的线性回归模型。
材料与方法
测量112颗因正畸原因拔除的第一前磨牙的实际长度，并与它们在全景X线片上的长度进行比较。根据牙齿在口腔内的象限位置将其分为四组（T14、T24、T34、T44），并对每组进行回归分析。
结果
建立了基于全景长度预测牙齿长度（mm）的线性回归模型（P < 0.0001）：对于T14组，预测长度 =（全景长度×0.698）+ 2.61。对于T24组，预测长度 =（全景长度×0.5056）+ 7.844。对于T34组，预测长度 =（全景长度×0.5075）+ 9.282。对于T44组，预测长度 =（全景长度×0.436）+ 11.298。
结论
利用全景图像预测所有第一前磨牙的长度是可行且可靠的。
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