傳統(tǒng)全景片和錐形束CT重建全景片測量牙軸近遠(yuǎn)中傾斜度的對比研究
[Abstract]:Objective to compare the accuracy of traditional panoramic film and cone-beam CT (CBCT) reconstruction panoramic film in measuring the proximal and distal inclination of tooth axis. Methods the plaster models of 15 normal volunteers were collected, and the marking points of the long axis and plane of the upper and lower teeth from the left first molar to the right first molar were determined, and the radiography device was made. The volunteers wore radiographic devices to take panoramic and CBCT films. The angle of tooth axis was measured on gypsum model, panoramic film and CBCT reconstruction panorama respectively. Multivariate analysis of variance and Dunnett-t test were used to compare the differences of three measurement methods. Results the differences among the three methods were statistically significant (P < 0. 00). Compared with the model measurement, there were significant differences in 12 teeth positions (upper and lower second premolars) in panoramic film group (P 0. 00), CBCT group). There was no significant difference in 12 teeth positions in P0. 00), CBCT group. Conclusion there are some errors in traditional panoramic images when evaluating the proximal and distal inclination of tooth axis, and CBCT reconstruction is a more effective method.
【作者單位】: 深圳華僑城醫(yī)院口腔科;口腔疾病研究國家重點(diǎn)實(shí)驗(yàn)室華西口腔醫(yī)院正畸科(四川大學(xué));
【基金】:四川省科技廳科技支撐計(jì)劃基金資助項(xiàng)目(2008SZ017-5) 四川省衛(wèi)生廳科研基金資助項(xiàng)目(090304)
【分類號】:R783.5
【共引文獻(xiàn)】
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1 陳曉迪;三種方法對牙齒軸傾角和轉(zhuǎn)矩角測量可靠性的比較[D];福建醫(yī)科大學(xué);2013年
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