title: A correlational study of scoliosis and trunk balance in adult patients with mandibular deviation.
abstract: Previous studies have confirmed that patients with mandibular deviation often have abnormal morphology of their cervical vertebrae. However, the relationship between mandibular deviation, scoliosis, and trunk balance has not been studied. Currently, mandibular deviation is usually treated as a single pathology, which leads to poor clinical efficiency. We investigated the relationship of spine coronal morphology and trunk balance in adult patients with mandibular deviation, and compared the finding to those in healthy volunteers. 35 adult patients with skeletal mandibular deviation and 10 healthy volunteers underwent anterior X-ray films of the head and posteroanterior X-ray films of the spine. Landmarks and lines were drawn and measured on these films. The axis distance method was used to measure the degree of scoliosis and the balance angle method was used to measure trunk balance. The relationship of mandibular deviation, spine coronal morphology and trunk balance was evaluated with the Pearson correlation method. The spine coronal morphology of patients with mandibular deviation demonstrated an "S" type curve, while a straight line parallel with the gravity line was found in the control group (significant difference, p<0.01). The trunk balance of patients with mandibular deviation was disturbed (imbalance angle >1°), while the control group had a normal trunk balance (imbalance angle <1°). There was a significant difference between the two groups (p<0.01). The degree of scoliosis and shoulder imbalance correlated with the degree of mandibular deviation, and presented a linear trend. The direction of mandibular deviation was the same as that of the lateral bending of thoracolumbar vertebrae, which was opposite to the direction of lateral bending of cervical vertebrae. Our study shows the degree of mandibular deviation has a high correlation with the degree of scoliosis and trunk imbalance, all the three deformities should be clinically evaluated in the management of mandibular deviation.
authors.affiliation: Department of Orthodontics, The 161th Hospital of PLA, Wuhan, China.
authors.forename: Shuncheng
authors.initials: S
authors.lastname: Zhou
authors.forename: Juanjuan
authors.initials: J
authors.lastname: Yan
authors.forename: Hu
authors.initials: H
authors.lastname: Da
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
authors.forename: Na
authors.initials: N
authors.lastname: Wang
authors.forename: Wenyong
authors.initials: W
authors.lastname: Wang
authors.forename: Yin
authors.initials: Y
authors.lastname: Ding
authors.forename: Shiyao
authors.initials: S
authors.lastname: Sun
mesh_terms: D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000002:abnormalities* / Q000000981:diagnostic imaging; D011187:Posture; D011859:Radiography; D012600:Scoliosis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D013131:Spine / Q000002:abnormalities / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D014965:X-Rays; D055815:Young Adult
references.citation: Am J Orthod Dentofacial Orthop. 2009 Apr;135(4 Suppl):S103-12
references.pmid: 19362261
references.citation: Am J Orthod Dentofacial Orthop. 1993 Dec;104(6):584-91
references.pmid: 8249934
references.citation: Am J Orthod Dentofacial Orthop. 2009 Oct;136(4):564-9
references.pmid: 19815160
references.citation: Am J Orthod Dentofacial Orthop. 2007 Apr;131(4 Suppl):S59-67
references.pmid: 17448387
references.citation: Cranio. 1991 Oct;9(4):316-21
references.pmid: 1820831
references.citation: J Prosthodont Res. 2011 Oct;55(4):228-33
references.pmid: 21550328
references.citation: Am J Orthod Dentofacial Orthop. 2011 Apr;139(4):e285-90
references.pmid: 21457833
references.citation: Am J Orthod Dentofacial Orthop. 2011 Dec;140(6):828-38
references.pmid: 22133948
references.citation: J Orofac Orthop. 2003 Sep;64(5):330-40
references.pmid: 14692047
references.citation: J Bone Joint Surg Am. 1982 Apr;64(4):481-8
references.pmid: 6802853
references.citation: Spine (Phila Pa 1976). 2009 Apr 20;34(9):E323-9
references.pmid: 19531987
references.citation: Eur J Orthod. 1990 Nov;12(4):408-13
references.pmid: 2086261
references.citation: Am J Orthod Dentofacial Orthop. 2010 Nov;138(5):540.e1-8; discussion 540-1
references.pmid: 21055584
references.citation: World J Orthod. 2004 Spring;5(1):9-24
references.pmid: 15615138
references.citation: Am J Orthod Dentofacial Orthop. 1990 Jun;97(6):489-94
references.pmid: 2353678
references.citation: Eur Spine J. 2010 Mar;19(3):427-34
references.pmid: 19946733
references.citation: Chang Gung Med J. 2011 Jul-Aug;34(4):341-51
references.pmid: 21880188
references.citation: Am J Orthod Dentofacial Orthop. 2005 Nov;128(5):583-91
references.pmid: 16286205
references.citation: Clinics (Sao Paulo). 2010 Jul;65(7):689-95
references.pmid: 20668626
references.citation: Am J Orthod Dentofacial Orthop. 2009 Dec;136(6):868-77
references.pmid: 19962611
references.citation: Eur J Orthod. 1991 Dec;13(6):435-40
references.pmid: 1817068
references.citation: Am J Orthod Dentofacial Orthop. 2007 Sep;132(3):279.e1-6
references.pmid: 17826592
references.citation: J Oral Rehabil. 2003 Apr;30(4):392-400
references.pmid: 12631163
references.citation: Am J Orthod Dentofacial Orthop. 2010 Jan;137(1):135-46
references.pmid: 20122441
references.citation: Am J Orthod Dentofacial Orthop. 2006 Nov;130(5):629-33
references.pmid: 17110260
references.citation: Clin Biomech (Bristol, Avon). 2008 May;23(4):381-6
references.pmid: 18093708
references.citation: Am J Orthod Dentofacial Orthop. 2006 Oct;130(4):437-44
references.pmid: 17045142
references.citation: Eur J Orthod. 2007 Apr;29(2):204-9
references.pmid: 17218718
references.citation: Am J Orthod Dentofacial Orthop. 2010 Feb;137(2):158.e1-; discussion 158-9
references.pmid: 20152659