Effects of Changes in the Frankfort Horizontal Plane Definition on the Three-Dimensional Cephalometric Evaluation of Symmetry

被引:6
作者
Mangal, Utkarsh [1 ]
Hwang, Jae Joon [2 ]
Jo, Heon [1 ]
Lee, Sung Min [3 ]
Jung, Yun-Hoa [2 ]
Cho, Bong-Hae [2 ]
Cha, Jung-Yul [1 ,4 ]
Choi, Sung-Hwan [1 ,4 ]
机构
[1] Yonsei Univ, Inst Craniofacial Deform, Dept Orthodont, Coll Dent, Seoul 03722, South Korea
[2] Pusan Natl Univ, Sch Dent, Inst Translat Dent Sci, Dept Oral & Maxillofacial Radiol, Yangsan 50612, South Korea
[3] HDXWILL, Seoul 03162, South Korea
[4] Yonsei Univ, Coll Dent, PLUS Project BK21, Seoul 03722, South Korea
来源
APPLIED SCIENCES-BASEL | 2020年 / 10卷 / 22期
关键词
FH plane; cone-beam computed tomography; CBCT; facial asymmetry; imaging; three-dimensional; ASYMMETRY; LANDMARKS; DEVIATION; ACCURACY; LINE;
D O I
10.3390/app10227956
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The plane formed by the intersection of bilateral porions (PoR and PoL) and left orbitale (OrL) is conventionally defined as the Frankfort horizontal (FH) plane. We aim to test the influence of the FH plane definition on a 3D cephalometric assessment. We selected 38 adult patients (20 males, 18 females; average age: 22.87 +/- 5.17 years) without any gross asymmetry from retrospective records and traced and analyzed their cone-beam computed tomographic images. The findings were categorized into the following four groups: FH1: conventional; FH2: PoR, PoL, right orbitale (OrR); FH3: OrR, OrL, PoL; FH4: OrR, OrL, PoR. The average menton (Me) deviation from the MSP was statistically significant for the FH1 group (0.56 +/- 0.27 mm; p < 0.001), compared to the FH3 (1.37 +/- 1.23 mm) and FH4 (1.33 +/- 1.16 mm) groups. The spatial orientation level (SOL) of the FH plane showed a marked difference (p < 0.05) between the FH2 (0.602 degrees +/- 0.503 degrees) and FH4 (0.944 degrees +/- 0.778 degrees) groups. The SOL of the MSP was comparatively small (p < 0.001) for FH2 (0.015 degrees +/- 0.023 degrees) in comparison to both FH 3 (0.644 degrees +/- 0.546 degrees) and FH 4 (0.627 degrees +/- 0.516 degrees). Therefore, the FH plane definition can significantly influence the interpretation of cephalometric findings. Future studies should focus on standardization to improve the reliability and reproducibility of 3D cephalometry.
引用
收藏
页码:1 / 12
页数:12
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