title: The effects of mouth opening on changes in the thickness of deep cervical flexors in normal adults.
abstract: [Purpose] The purpose of this study was to identify changes in the thickness of the deep cervical flexors (DCFs) according to the degree of mouth opening (MO) in normal adults. [Subjects] The study's subjects were 50 normal adults (30 men, 20 women). [Methods] Ultrasound was used to obtain images of muscles, and the NIH ImageJ software was used to measure the thickness of each muscle. [Results] An increase in MO resulted in a corresponding increase in the thickness of the DCFs, and in isometric exercises (IEs), the thickness of the DCFs further increased during MO. [Conclusion] During MO, the thickness of the DCFs increased. This may be due to correlations between mandibular movements and DCFs. Therefore, the results are likely to be utilized as new clinical research data.
authors: Center of Physical Therapy, Kimjun's Orthopaedic Clinic, Republic of Korea.
authors: Ilsub
authors: I
authors: Jun
authors: Department of Physical Therapy, Daegu Health College, Republic of Korea.
authors: Jaehong
authors: J
authors: Lee
authors: Department of Occupational Therapy, Daegu Health College, Republic of Korea.
authors: Hansoo
authors: H
authors: Kim
authors: Department of CAM & Naturopathy, DaeJeon Institute of Science and Technology, Republic of Korea.
authors: KyungHan
authors: K
authors: Yang
keywords: Deep cervical flexors; Mouth opening; Temporomandibular joint
references: J Appl Oral Sci. 2009 Sep-Oct;17(5):539-43
references: 19936539
references: Eur J Orthod. 1985 Aug;7(3):177-84
references: 3862591
references: J Biomech. 2004 Sep;37(9):1387-92
references: 15275846
references: J Man Manip Ther. 2008;16(2):89-92
references: 19119393
references: Arch Oral Biol. 2000 Aug;45(8):675-82
references: 10869479
references: BMC Musculoskelet Disord. 2009 Mar 02;10:28
references: 19254384
references: Cranio. 1996 Jan;14(1):71-80
references: 9086879
references: J Oral Maxillofac Res. 2013 Jan 01;3(4):e4
references: 24422022
references: Clin J Pain. 2011 Jan;27(1):48-55
references: 20733480
references: J Oral Rehabil. 1998 Nov;25(11):859-70
references: 9846906
references: J Phys Ther Sci. 2013 Nov;25(11):1373-5
references: 24396191
references: J Bodyw Mov Ther. 2011 Apr;15(2):242-50
references: 21419367