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Head posture and pharyngeal airway volume changes after bimaxillary surgery for mandibular prognathism.
J Craniomaxillofac Surg. 2014 Jul; 42(5):531-5.JC

Abstract

PURPOSE

The purpose of this study was to evaluate head posture and the pharyngeal airway volume changes using 3D imaging after bimaxillary surgery in mandibular prognathism patients by null hypothesis.

MATERIALS AND METHODS

Cone-beam computed tomography (CBCT) scans were obtained for 25 mandibular prognathism patients before bimaxillary surgery (T1) and 6 months after surgery (T2). The head posture of each patient was assessed by measuring cranio-cervical angle on a midsagittal plane passing through the anterior nasal spine at T1 and T2. Additionally, the volume of each subject's pharyngeal airway was measured using InVivoDental 3D imaging software.

RESULTS

The cranio-cervical angle increased significantly 6 months after bimaxillary surgery (p < 0.01). The total volume of the pharyngeal airway slightly decreased (p > 0.05) at the same timepoints, while naso- and oro-pharyngeal airway volume decreased significantly (p < 0.05, p < 0.05). There was significant relationship between the changes of head posture and those of total airway volume (p < 0.05).

CONCLUSION

The null hypothesis was rejected. Bimaxillary surgery resulted in significant head flexion and a slight decrease in total pharyngeal airway volume.

Authors+Show Affiliations

Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Gil-dong 445, Gangdong-gu, Seoul 134-701, Republic of Korea.Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Gil-dong 445, Gangdong-gu, Seoul 134-701, Republic of Korea.Graduate School of Hallym University, Seoul, Republic of Korea.Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Gil-dong 445, Gangdong-gu, Seoul 134-701, Republic of Korea.Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Gil-dong 445, Gangdong-gu, Seoul 134-701, Republic of Korea. Electronic address: dentpark64@hanmail.net.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24080139

Citation

Kim, Min-Ah, et al. "Head Posture and Pharyngeal Airway Volume Changes After Bimaxillary Surgery for Mandibular Prognathism." Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery, vol. 42, no. 5, 2014, pp. 531-5.
Kim MA, Kim BR, Youn JK, et al. Head posture and pharyngeal airway volume changes after bimaxillary surgery for mandibular prognathism. J Craniomaxillofac Surg. 2014;42(5):531-5.
Kim, M. A., Kim, B. R., Youn, J. K., Kim, Y. J., & Park, Y. H. (2014). Head posture and pharyngeal airway volume changes after bimaxillary surgery for mandibular prognathism. Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery, 42(5), 531-5. https://doi.org/10.1016/j.jcms.2013.07.022
Kim MA, et al. Head Posture and Pharyngeal Airway Volume Changes After Bimaxillary Surgery for Mandibular Prognathism. J Craniomaxillofac Surg. 2014;42(5):531-5. PubMed PMID: 24080139.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Head posture and pharyngeal airway volume changes after bimaxillary surgery for mandibular prognathism. AU - Kim,Min-Ah, AU - Kim,Bo-Ram, AU - Youn,Jong-Kuk, AU - Kim,Yoon-Ji R, AU - Park,Yang-Ho, Y1 - 2013/08/28/ PY - 2012/11/08/received PY - 2013/05/29/revised PY - 2013/07/31/accepted PY - 2013/10/2/entrez PY - 2013/10/2/pubmed PY - 2015/7/7/medline KW - CBCT KW - Head posture KW - Orthognathic surgery KW - Pharyngeal airway SP - 531 EP - 5 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 - 5 N2 - PURPOSE: The purpose of this study was to evaluate head posture and the pharyngeal airway volume changes using 3D imaging after bimaxillary surgery in mandibular prognathism patients by null hypothesis. MATERIALS AND METHODS: Cone-beam computed tomography (CBCT) scans were obtained for 25 mandibular prognathism patients before bimaxillary surgery (T1) and 6 months after surgery (T2). The head posture of each patient was assessed by measuring cranio-cervical angle on a midsagittal plane passing through the anterior nasal spine at T1 and T2. Additionally, the volume of each subject's pharyngeal airway was measured using InVivoDental 3D imaging software. RESULTS: The cranio-cervical angle increased significantly 6 months after bimaxillary surgery (p < 0.01). The total volume of the pharyngeal airway slightly decreased (p > 0.05) at the same timepoints, while naso- and oro-pharyngeal airway volume decreased significantly (p < 0.05, p < 0.05). There was significant relationship between the changes of head posture and those of total airway volume (p < 0.05). CONCLUSION: The null hypothesis was rejected. Bimaxillary surgery resulted in significant head flexion and a slight decrease in total pharyngeal airway volume. SN - 1878-4119 UR - https://www.unboundmedicine.com/medline/citation/24080139/Head_posture_and_pharyngeal_airway_volume_changes_after_bimaxillary_surgery_for_mandibular_prognathism_ DB - PRIME DP - Unbound Medicine ER -