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Cephalometric and three-dimensional assessment of the posterior airway space and imaging software reliability analysis before and after orthognathic surgery.
J Craniomaxillofac Surg. 2014 Oct; 42(7):1428-36.JC

Abstract

PURPOSE

This study aimed to compare the reliability of three different imaging software programs for measuring the PAS and concurrently to investigate the morphological changes in oropharyngeal structures in mandibular prognathic patients before and after orthognathic surgery by using 2D and 3D analyzing technique.

MATERIAL AND METHODS

The study consists of 11 randomly chosen patients (8 females and 3 males) who underwent maxillomandibular treatment for correction of Class III anteroposterior mandibular prognathism at the University Hospital in Zurich. A set of standardized LCR and CBCT-scans were obtained from each subject preoperatively (T0), 3 months after surgery (T1) and 3 months to 2 years postoperatively (T2). Morphological changes in the posterior airway space (PAS) were evaluated longitudinally by two different observers with three different imaging software programs (OsiriX(®) 64-bit, Switzerland; Mimics(®), Belgium; BrainLab(®), Germany) and manually by analyzing cephalometric X-rays.

RESULTS

A significant increase in the upper airway dimensions before and after surgery occurred in all measured cases. All other cephalometric distances showed no statistically significant alterations. Measuring the volume of the PAS showed no significant changes in all cases. All three software programs showed similar outputs in both cephalometric analysis and 3D measuring technique.

CONCLUSION

A 3D design of the posterior airway seems to be far more reliable and precise phrasing of a statement of postoperative gradients than conventional radiography and is additionally higher compared to the corresponding manual method. In case of Class III mandibular prognathism treatment with bilateral split osteotomy of the mandible and simultaneous maxillary advancement, the negative effects of PAS volume decrease may be reduced and might prevent a developing OSAS.

Authors+Show Affiliations

Department of Cranio-Maxillofacial and Oral Surgery, University Hospital Zurich, Switzerland. Electronic address: s0471919@me.com.Department of Cranio-Maxillofacial and Oral Surgery, University Hospital Zurich, Switzerland.Department of Cranio-Maxillofacial and Oral Surgery, University Hospital Zurich, Switzerland.Biostatistics Unit, Institute of Social and Preventive Medicine, University of Zurich, Switzerland.Department of Cranio-Maxillofacial and Oral Surgery, University Hospital Zurich, Switzerland.Department of Cranio-Maxillofacial and Oral Surgery, University Hospital Zurich, Switzerland.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

24864074

Citation

Burkhard, John Patrik Matthias, et al. "Cephalometric and Three-dimensional Assessment of the Posterior Airway Space and Imaging Software Reliability Analysis Before and After Orthognathic Surgery." Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery, vol. 42, no. 7, 2014, pp. 1428-36.
Burkhard JP, Dietrich AD, Jacobsen C, et al. Cephalometric and three-dimensional assessment of the posterior airway space and imaging software reliability analysis before and after orthognathic surgery. J Craniomaxillofac Surg. 2014;42(7):1428-36.
Burkhard, J. P., Dietrich, A. D., Jacobsen, C., Roos, M., Lübbers, H. T., & Obwegeser, J. A. (2014). Cephalometric and three-dimensional assessment of the posterior airway space and imaging software reliability analysis before and after orthognathic surgery. Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery, 42(7), 1428-36. https://doi.org/10.1016/j.jcms.2014.04.005
Burkhard JP, et al. Cephalometric and Three-dimensional Assessment of the Posterior Airway Space and Imaging Software Reliability Analysis Before and After Orthognathic Surgery. J Craniomaxillofac Surg. 2014;42(7):1428-36. PubMed PMID: 24864074.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cephalometric and three-dimensional assessment of the posterior airway space and imaging software reliability analysis before and after orthognathic surgery. AU - Burkhard,John Patrik Matthias, AU - Dietrich,Ariella Denise, AU - Jacobsen,Christine, AU - Roos,Malgorzota, AU - Lübbers,Heinz-Theo, AU - Obwegeser,Joachim Anton, Y1 - 2014/04/29/ PY - 2014/01/27/received PY - 2014/04/09/revised PY - 2014/04/10/accepted PY - 2014/5/28/entrez PY - 2014/5/28/pubmed PY - 2015/12/15/medline KW - CBCT KW - Cephalometry KW - Imaging software KW - Orthognathic surgery KW - Posterior airway SP - 1428 EP - 36 JF - Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery JO - J Craniomaxillofac Surg VL - 42 IS - 7 N2 - PURPOSE: This study aimed to compare the reliability of three different imaging software programs for measuring the PAS and concurrently to investigate the morphological changes in oropharyngeal structures in mandibular prognathic patients before and after orthognathic surgery by using 2D and 3D analyzing technique. MATERIAL AND METHODS: The study consists of 11 randomly chosen patients (8 females and 3 males) who underwent maxillomandibular treatment for correction of Class III anteroposterior mandibular prognathism at the University Hospital in Zurich. A set of standardized LCR and CBCT-scans were obtained from each subject preoperatively (T0), 3 months after surgery (T1) and 3 months to 2 years postoperatively (T2). Morphological changes in the posterior airway space (PAS) were evaluated longitudinally by two different observers with three different imaging software programs (OsiriX(®) 64-bit, Switzerland; Mimics(®), Belgium; BrainLab(®), Germany) and manually by analyzing cephalometric X-rays. RESULTS: A significant increase in the upper airway dimensions before and after surgery occurred in all measured cases. All other cephalometric distances showed no statistically significant alterations. Measuring the volume of the PAS showed no significant changes in all cases. All three software programs showed similar outputs in both cephalometric analysis and 3D measuring technique. CONCLUSION: A 3D design of the posterior airway seems to be far more reliable and precise phrasing of a statement of postoperative gradients than conventional radiography and is additionally higher compared to the corresponding manual method. In case of Class III mandibular prognathism treatment with bilateral split osteotomy of the mandible and simultaneous maxillary advancement, the negative effects of PAS volume decrease may be reduced and might prevent a developing OSAS. SN - 1878-4119 UR - https://www.unboundmedicine.com/medline/citation/24864074/Cephalometric_and_three_dimensional_assessment_of_the_posterior_airway_space_and_imaging_software_reliability_analysis_before_and_after_orthognathic_surgery_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1010-5182(14)00128-0 DB - PRIME DP - Unbound Medicine ER -