Accuracy comparison of three-dimensional reconstruction of zygomatic-maxillary complex by CBCT and MSCT

CUI Mei-ling; WANG Wei; JIANG Lin; SHAO Yi-sen

doi:10.11659/jjssx.05E024028

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Accuracy comparison of three-dimensional reconstruction of zygomatic-maxillary complex by CBCT and MSCT

Basic Research | 更新时间：2025-05-26

- Accuracy comparison of three-dimensional reconstruction of zygomatic-maxillary complex by CBCT and MSCT
- JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY Vol. 34, Issue 5, Pages: 390-394(2025)
- 作者机构：
  
  1.浙江省台州医院口腔科，浙江台州 317000
  2.江西中医药大学附属医院口腔创伤整形科，江西南昌 330000
- 作者简介：
- 基金信息：
- DOI：10.11659/jjssx.05E024028
  CLC： R782.13
- Received：08 May 2024，
  
  Published：25 May 2025
- 稿件说明：
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崔美玲,王伟,蒋琳等.CBCT和MSCT三维重建颧上颌骨复合体的精度对比[J].局解手术学杂志,2025,34(05):390-394.

CUI Mei-ling,WANG Wei,JIANG Lin,et al.Accuracy comparison of three-dimensional reconstruction of zygomatic-maxillary complex by CBCT and MSCT[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2025,34(05):390-394.
崔美玲,王伟,蒋琳等.CBCT和MSCT三维重建颧上颌骨复合体的精度对比[J].局解手术学杂志,2025,34(05):390-394. DOI： 10.11659/jjssx.05E024028.

CUI Mei-ling,WANG Wei,JIANG Lin,et al.Accuracy comparison of three-dimensional reconstruction of zygomatic-maxillary complex by CBCT and MSCT[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2025,34(05):390-394. DOI： 10.11659/jjssx.05E024028.

摘要

目的

比较锥形束计算机断层扫描（CBCT）和多层螺旋计算机断层扫描（MSCT）三维重建的颧上颌骨复合体在穿颧种植相关参数上的精度差异。

方法

选取成人头骨标本5例（共10侧颧上颌骨复合体），根据穿颧种植临床应用特点，对每个头骨标本进行参数定位，再使用CBCT和MSCT进行扫描及三维重建。分别测量每个头骨标本及其CBCT、MSCT三维重建模型的穿颧路径与颧上颌缝交点处上颌骨颧突的厚度（L

B-B1

）、穿颧路径与颧骨表面中点交点处颧骨的厚度（L

C-C1

）、第二前磨牙与第一磨牙中间的牙槽突宽度（L

）、第一磨牙的颊舌径宽度（L

）4个参数，实体标本组采用电子游标卡尺测量，CBCT组和MSCT组基于CBCT、MSCT测量。计算各个参数的绝对和相对误差，对CBCT和MSCT三维重建模型的精度进行对比分析。

结果

各参数测量数据具有较高的可信度和可重复性，组内相关系数（

ICC

）值≥0.90；CBCT组、MSCT组各参数测量结果与实体标本组比较，差异均有统计学意义（

0.05）；CBCT组的L

测量结果小于MSCT组，差异有统计学意义（

0.05）；CBCT组的L

B-B1

、L

C-C1

、L

测量结果与MSCT组比较，差异均无统计学意义（

0.05）；CBCT组的L

测量结果与实体标本组的平均绝对误差和相对误差均小于MSCT组，差异有统计学意义（

0.05）；CBCT组和MSCT组的L

B-B1

、L

C-C1

、L

测量结果与实体标本组的平均绝对误差和相对误差比较，差异均无统计学意义（

0.05）。

结论

CBCT与MSCT对颧上颌骨复合体的三维重建具有等效精度，但CBCT在牙体组织等精细结构的三维重建精度方面更具优势，建议将其作为穿颧种植影像数据采集的首要选择。

Abstract

Objective

To compare the accuracy differences of three-dimensional reconstruction of zygomatic-maxillary complex using cone beam computed tomography（CBCT） and multi-slice spiral computed tomography（MSCT）in the parameters related to zygomatic implantation.

Methods

Five adult skull specimens （10 zygomatic-maxillary complexes in total） were selected.According to the clinical application characteristics of zygomatic implantation，the parameter location for each skull specimen was conducted，and then CBCT and MSCT were used for scanning and three-dimensional reconstruction.Four parameters were measured on both skull specimens and reconstructed models：the thickness of the maxillary zygomatic process at the intersection of the zygomatic implant path and zygomaticomaxillary suture （L

B-B1

），the thickness of the zygomatic bone at the intersection of the zygomatic implant path and the midpoint of the zygomatic bone surface（L

C-C1

），the width of the alveolar ridge between the second premolar and the first molar （L

），and the buccolingual width of the first molar （L

）.The specimen group was measured by electronic vernier caliper， and the CBCT group and MSCT group were measured based on CBCT and MSCT. The absolute and relative errors of these four parameters were calculated，and the accuracy of the CBCT and MSCT three-dimensional reconstruction models were analyzed.

Results

All parameters demonstrated excellent measurement reliability and repeatability，with

intra

class correlation coefficient

（

ICC

）≥0.90.The measurement results of each parameter in the CBCT group and the MSCT group showed statistically significant differences compared with those in the specimen group （

0.05）.The measurement result of L

in the CBCT group was smaller than that in the MSCT group，and the difference was statistically significant （

0.05）. However，th

e measurement results of L

B-B1

，L

C-C1

and L

in the CBCT group showed no statistically significant difference compared with those in the MSCT group （

0.05）.The mean absolute error and relative error of the L

measurement results to the specimen group in the CBCT group were both smaller than those in the MSCT group，and the differences were statistically significant （

0.05）. There was no statistically significant difference in the mean absolute error or relative error of the L

B-B1

，L

C-C1

and L

measurement results to the specimen group between the CBCT group and the MSCT group （

0.05）.

Conclusion

CBCT and MSCT demonstrat comparable accuracy in three-dimensional reconstruction of the zygomatic-maxillary complex.However，CBCT exhibits superior accuracy for fine structures such as dental tissues， which is recommended as the primary choice for imaging data acquisition in zygomatic implantation.

关键词

Keywords

references

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