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Effects of Changes in the Frankfort Horizontal Plane Definition on the Three-Dimensional Cephalometric Evaluation of Symmetry
- Source :
- Applied Sciences, Volume 10, Issue 22, Applied Sciences, Vol 10, Iss 7956, p 7956 (2020)
- Publication Year :
- 2020
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2020.
-
Abstract
- 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<br />average age: 22.87 &plusmn<br />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<br />FH2: PoR, PoL, right orbitale (OrR)<br />FH3: OrR, OrL, PoL<br />FH4: OrR, OrL, PoR. The average menton (Me) deviation from the MSP was statistically significant for the FH1 group (0.56 &plusmn<br />0.27 mm<br />p &lt<br />0.001), compared to the FH3 (1.37 &plusmn<br />1.23 mm) and FH4 (1.33 &plusmn<br />1.16 mm) groups. The spatial orientation level (SOL) of the FH plane showed a marked difference (p &lt<br />0.05) between the FH2 (0.602&deg<br />&plusmn<br />0.503&deg<br />) and FH4 (0.944&deg<br />0.778&deg<br />) groups. The SOL of the MSP was comparatively small (p &lt<br />0.001) for FH2 (0.015&deg<br />0.023&deg<br />) in comparison to both FH 3 (0.644&deg<br />0.546&deg<br />) and FH 4 (0.627&deg<br />0.516&deg<br />). 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.
- Subjects :
- Future studies
cone-beam computed tomography
lcsh:Technology
Computed tomographic
lcsh:Chemistry
03 medical and health sciences
0302 clinical medicine
three-dimensional
General Materials Science
Frankfort-horizontal plane
Instrumentation
lcsh:QH301-705.5
Mathematics
Fluid Flow and Transfer Processes
Adult patients
business.industry
lcsh:T
Process Chemistry and Technology
General Engineering
CBCT
imaging
030206 dentistry
Craniometry
lcsh:QC1-999
Computer Science Applications
lcsh:Biology (General)
lcsh:QD1-999
lcsh:TA1-2040
facial asymmetry
Symmetry (geometry)
FH plane
Left orbitale
Nuclear medicine
business
lcsh:Engineering (General). Civil engineering (General)
030217 neurology & neurosurgery
lcsh:Physics
Facial symmetry
Subjects
Details
- Language :
- English
- ISSN :
- 20763417
- Database :
- OpenAIRE
- Journal :
- Applied Sciences
- Accession number :
- edsair.doi.dedup.....1c29dfd09c860063f14ca608178776e0
- Full Text :
- https://doi.org/10.3390/app10227956