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Does upper premolar extraction affect the changes of pharyngeal airway volume after bimaxillary surgery in skeletal class III patients?
J Oral Maxillofac Surg. 2014 Jan; 72(1):165.e1-10.JO

Abstract

PURPOSE

The purpose of this study was to assess the pharyngeal airway volume change after bimaxillary surgery in patients with skeletal Class III malocclusion and evaluate the difference in postoperative pharyngeal airway space between upper premolar extraction cases and nonextraction cases.

MATERIALS AND METHODS

Cone-beam computed tomographic scans were obtained for 23 patients (13 in extraction group and 10 in nonextraction group) who were diagnosed with mandibular prognathism before surgery (T0) and then 2 months (T2) and 6 months after surgery (T3). Using InVivoDental 3-dimensional imaging software, volumetric changes in the pharyngeal airway space were assessed at T0, T2, and T3. The Wilcoxon signed-rank test was used to determine whether there were significant changes in pharyngeal airway volume between time points. The Mann-Whitney U test was used to determine whether there were significant differences in volumetric changes between the extraction and nonextraction groups.

RESULTS

Volumes in all subsections of the pharyngeal airway were decreased (P < .05) except for changes in the oropharyngeal airway volume in the nonextraction group from T0 to T2. There were significant differences between the extraction and nonextraction groups in the changes of oro- and total pharyngeal airway volumes from T0 to T3.

CONCLUSION

The null hypothesis was rejected. The extraction of upper premolars rather than nonextraction decreased the pharyngeal airway space more in patients with mandibular prognathism who planned to have bimaxillary surgery.

Authors+Show Affiliations

Resident, Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea.Professor, Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea. Electronic address: dentpark64@hanmail.net.

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

24331568

Citation

Kim, Min-Ah, and Yang-Ho Park. "Does Upper Premolar Extraction Affect the Changes of Pharyngeal Airway Volume After Bimaxillary Surgery in Skeletal Class III Patients?" Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons, vol. 72, no. 1, 2014, pp. 165.e1-10.
Kim MA, Park YH. Does upper premolar extraction affect the changes of pharyngeal airway volume after bimaxillary surgery in skeletal class III patients? J Oral Maxillofac Surg. 2014;72(1):165.e1-10.
Kim, M. A., & Park, Y. H. (2014). Does upper premolar extraction affect the changes of pharyngeal airway volume after bimaxillary surgery in skeletal class III patients? Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons, 72(1), e1-10. https://doi.org/10.1016/j.joms.2013.09.020
Kim MA, Park YH. Does Upper Premolar Extraction Affect the Changes of Pharyngeal Airway Volume After Bimaxillary Surgery in Skeletal Class III Patients. J Oral Maxillofac Surg. 2014;72(1):165.e1-10. PubMed PMID: 24331568.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Does upper premolar extraction affect the changes of pharyngeal airway volume after bimaxillary surgery in skeletal class III patients? AU - Kim,Min-Ah, AU - Park,Yang-Ho, PY - 2013/06/13/received PY - 2013/09/11/revised PY - 2013/09/13/accepted PY - 2013/12/17/entrez PY - 2013/12/18/pubmed PY - 2014/2/13/medline SP - 165.e1 EP - 10 JF - Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons JO - J Oral Maxillofac Surg VL - 72 IS - 1 N2 - PURPOSE: The purpose of this study was to assess the pharyngeal airway volume change after bimaxillary surgery in patients with skeletal Class III malocclusion and evaluate the difference in postoperative pharyngeal airway space between upper premolar extraction cases and nonextraction cases. MATERIALS AND METHODS: Cone-beam computed tomographic scans were obtained for 23 patients (13 in extraction group and 10 in nonextraction group) who were diagnosed with mandibular prognathism before surgery (T0) and then 2 months (T2) and 6 months after surgery (T3). Using InVivoDental 3-dimensional imaging software, volumetric changes in the pharyngeal airway space were assessed at T0, T2, and T3. The Wilcoxon signed-rank test was used to determine whether there were significant changes in pharyngeal airway volume between time points. The Mann-Whitney U test was used to determine whether there were significant differences in volumetric changes between the extraction and nonextraction groups. RESULTS: Volumes in all subsections of the pharyngeal airway were decreased (P < .05) except for changes in the oropharyngeal airway volume in the nonextraction group from T0 to T2. There were significant differences between the extraction and nonextraction groups in the changes of oro- and total pharyngeal airway volumes from T0 to T3. CONCLUSION: The null hypothesis was rejected. The extraction of upper premolars rather than nonextraction decreased the pharyngeal airway space more in patients with mandibular prognathism who planned to have bimaxillary surgery. SN - 1531-5053 UR - https://www.unboundmedicine.com/medline/citation/24331568/Does_upper_premolar_extraction_affect_the_changes_of_pharyngeal_airway_volume_after_bimaxillary_surgery_in_skeletal_class_III_patients L2 - https://linkinghub.elsevier.com/retrieve/pii/S0278-2391(13)01209-3 DB - PRIME DP - Unbound Medicine ER -