【摘要】：目的探索錐形束CT(CBCT)對(duì)牙體長(zhǎng)度各參數(shù)測(cè)量的可行性及準(zhǔn)確性。方法通過InVivoDental軟件對(duì)40例患者109顆活體牙的CBCT掃描數(shù)據(jù)進(jìn)行組織分割以及重建,得到目標(biāo)牙長(zhǎng)軸的頰舌向斷層圖像,測(cè)量根長(zhǎng)、冠長(zhǎng)和牙體全長(zhǎng)。相同活體牙經(jīng)外科拔除后,進(jìn)行相應(yīng)參數(shù)測(cè)量。比較實(shí)體測(cè)量值和CBCT測(cè)量值的差異,檢驗(yàn)CBCT測(cè)量牙體長(zhǎng)度的精確性。結(jié)果實(shí)驗(yàn)牙根長(zhǎng)、冠長(zhǎng)及牙體全長(zhǎng)的CBCT測(cè)量值與實(shí)體測(cè)量值的差異無統(tǒng)計(jì)學(xué)意義(P值分別為0.790、0.621、0.657),兩種測(cè)量方法差值的95%可信區(qū)間分別為(-1.10~1.13)、(-1.00~0.96)、(-1.00~1.05)mm。結(jié)論 CBCT對(duì)活體牙的根長(zhǎng)、冠長(zhǎng)及牙體全長(zhǎng)的無創(chuàng)測(cè)量與實(shí)體測(cè)量的一致性較好,可在臨床推廣應(yīng)用。
[Abstract]:Objective to explore the feasibility and accuracy of conical beam CT (CBCT) in measuring the parameters of tooth length. Methods InVivoDental software was used to segment and reconstruct the CBCT scanning data of 109 living teeth of 40 patients. The buccal and lingual tomograms of the long axis of the target teeth were obtained, and the root length, crown length and the total length of the tooth were measured. The parameters of the same living teeth were measured after surgical extraction. To compare the difference between the measured values of solid and CBCT, and to test the accuracy of the measurement of tooth length by CBCT. Results there was no significant difference between the measured CBCT values of root length, crown length and total length of teeth (P = 0.790), and the 95% confidence interval of the difference between the two methods was (-1.101.13). (-1.00), (-1.00), (1.05) mm. Conclusion the noninvasive measurement of root length, crown length and total length of tooth by CBCT is in good agreement with solid measurement, and can be widely used in clinic.
【作者單位】： 重慶醫(yī)科大學(xué)附屬口腔醫(yī)院口腔頜面外科;口腔疾病與生物醫(yī)學(xué)重慶市重點(diǎn)實(shí)驗(yàn)室;重慶醫(yī)科大學(xué)附屬口腔醫(yī)院大學(xué)城門診部;口腔疾病研究國(guó)家重點(diǎn)實(shí)驗(yàn)室華西口腔醫(yī)院唇腭裂外科(四川大學(xué));
【基金】：重慶市科學(xué)技術(shù)委員會(huì)基金資助項(xiàng)目(cstc2013jcyjA10010)
【分類號(hào)】：R816.98

【共引文獻(xiàn)】

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1 沈月騰;胡露露;宋錦t，

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