Effect of maximum anchorage extraction on upper airway in adolescent patients with bimaxillary protrusion

doi:10.19439/j.sjos.2018.04.017

Abstract

Abstract: PURPOSE: To investigate the effect of maximum anchorage on upper airway in adolescent patients with bimaxillary protrusion and extraction from three-dimensional direction on cone-beam computed tomography(CBCT). METHODS: A retrospective evaluation was carried out on pre- and post-orthodontic treatment records of 50 adolescents with bimaxillary protrusion treated by maximum anchorage extraction. The changes on upper airway pre- and post-treatment were measured. The data were analyzed using SPSS 17.0 software package. RESULTS: It was found that the volume, mean cross-section area, minimum cross-section area of oropharyngeal and hypopharyngeal airway were significantly decreased after treatment (P<0.001). The cross-section morphology of oropharyngeal and hypopharyngeal airway showed more ellipsoid(P<0.001). Pearson's correlation analysis indicated that the lower incisor retraction and hyoid retraction was correlated with mean cross-section area of hypopharyngeal airway (P<0.05). There was significant correlation in the upper and lower incisor retraction and hyoid retraction(P<0.01). CONCLUSIONS: The upper airway dimension should be given serious consideration on the decision when closing the space with maximum anchorage in adolescent patients.

Key words: Upper airway, Cone-beam CT, Adolescent, Maximum anchorage, Extraction

CLC Number:

R783.5

CHEN Wei, LIU Yue-hua, XU Qi. Effect of maximum anchorage extraction on upper airway in adolescent patients with bimaxillary protrusion[J]. Shanghai Journal of Stomatology, 2018, 27(4): 419-423.

References

[1] Meoli AL, Casey KR, Clark RW, et al.Hypopnea in sleep-disordered breathing in adults[J]. Sleep, 2001, 24(4): 469-470.
[2] Aboudara C, Nielsen I, Huang JC, et al.Comparison of airway space with conventional lateral head films and 3-dimensional reconstruction from cone-beam computed tomography[J]. Am J Orthod Dentofacial Orthop, 2009, 135(4): 468-479.
[3] Yamashina A, Tanimoto K, Sutthiprapaporn P, et al.The reliability of computed tomography (CT) values and dimensional measurements of the oropharyngeal region using cone beam CT: comparison with multidetector CT[J]. Dentomaxillofac Radiol, 2008, 37(5): 245-251.
[4] Melsen B.The cranial base[J]. Acta Odontol Scand, 1974, 32(1): 86-101.
[5] Baumrind S, Ben-Bassat Y, Bravo LA, et al.Partitioning the components of maxillary tooth displacement by the comparison of data from three cephalometric superimpositions[J]. Angle Orthod, 1996, 66(2): 111-124.
[6] Björk A.Prediction of mandibular growth rotation[J]. Am J Orthod, 1969, 55(6): 585-599.
[7] Celenk M, Farrell ML, Eren H, et al.Upper airway detection and visualization from cone beam image slices[J]. J Xray Sci Technol, 2010, 18(2): 121-135.
[8] Houston WJ.The analysis of errors in orthodontic measurement[J]. Am J Orthod, 1983, 83(5): 382-390.
[9] Abramson Z, Susarla S, Troulis M, et al.Age-related changes of the upper airway assessed by 3-dimensional computed tomography[J]. J Craniofac Surg, 2009, 20(Suppl 1): 657-663.
[10] Germec-Cakan D, Taner T, Akan S.Uvulo-glossopharyngeal dimensions in non-extraction, extraction with minimum anchorage, and extraction with maximum anchorage[J]. Eur J Orthod, 2011, 33(5): 515-520.
[11] Kiliç N, Oktay H.Effects of rapid maxillary expansion on nasal breathing and some naso-respiratory and breathing problems in growing children: a literature review[J]. Int J Pediatr Otorhinolaryngol, 2008, 72(11): 1595-1601.
[12] Sayinsu K, Isik F, Arun T.Sagittal airway dimensions following maxillary protraction: a pilot study[J]. Eur J Orthod, 2006, 28(2): 184-189.
[13] Chen Y, Hong L, Wang CL, et al.Effect of large incisor retraction on upper airway morphology in adult bimaxillary protrusion patients[J]. Angle Orthod, 2012, 82(6): 964-970.
[14] Kim MA, Park YH. Does upper premolar extraction affect the changes of pharyngeal airway volume after bimaxillary surgery in skeletal Class Ⅲ patients?[J]. J Oral Maxillofac Surg, 2014, 72(1): 165.e1-10.
[15] Verma SL, Sharma VP, Singh GP, et al.Comparative assessment of soft-tissue changes in Class II division 1 patients following extraction and non-extraction treatment[J]. Dent Res J (Isfahan), 2013, 10(6): 764-771.
[16] Wang Q, Jia P, Anderson NK, et al.Changes of pharyngeal airway size and hyoid bone position following orthodontic treatment of Class I bimaxillary protrusion[J]. Angle Orthod, 2012, 82(1): 115-121.
[17] Tselnik M, Pogrel MA.Assessment of the pharyngeal airway space after mandibular setback surgery[J]. J Oral Maxillofac Surg, 2000, 58(3): 282-285.
[18] Al Maaitah E, El Said N, Abu Alhaija ES.First premolar extraction effects on upper airway dimension in bimaxillary proclination patients[J]. Angle Orthod, 2012, 82(5): 853-859.
[19] Stefanovic N, El H, Chenin DL, et al.Three-dimensional pharyngeal airway changes in orthodontic patients treated with and without extractions[J]. Orthod Craniofac Res, 2013, 16(2): 87-96.