title: Comparison of occlusal discomfort in patients with temporomandibular disorders between myofascial pain and disc displacement.
abstract: We compared occlusal discomfort in patients with temporomandibular disorders (TMD) between myofascial pain (MFP) and disc displacement (DD) using a database created from Sep, 2003 to Aug, 2005. We selected 71 patients with MFP and 170 patients with DD to construct a null model of structural equation modeling (SEM) in which anxiety influenced depressive mood, depressive mood aggravated occlusal discomfort and sleep complaints, and sleep complaints or an onset event caused by another person aggravated occlusal discomfort. We performed a simultaneous analysis of patients with MFP and DD. The estimated parameter of the path from depressive mood to occlusal discomfort was significant for patients with MFP, but not for patients with DD. The path from an onset event caused by another person, such as dental treatment to occlusal discomfort was significant in patients with MFP and those with DD. The Goodness of Fit Index (=0.909), The Adjusted Goodness of Fit Index (=0.867), and The Root Mean Square Error of Approximation (=0.039) indicated good acceptability. These results suggested that an increase in depressive mood may aggravate occlusal discomfort in patients with MFP, and an onset event caused by another person, such as dental treatment, also may aggravate occlusal discomfort in patients with MFP and those with DD.
authors.affiliation: Temporomandibular Joint and Occlusion, Comprehensive Oral Health Care, Comprehensive Patient Care, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Toshihisa
authors.initials: T
authors.lastname: Shibuya
authors.forename: Koji
authors.initials: K
authors.lastname: Kino
authors.forename: Masashi
authors.initials: M
authors.lastname: Sugisaki
authors.forename: Fumiaki
authors.initials: F
authors.lastname: Sato
authors.forename: Tadasu
authors.initials: T
authors.lastname: Haketa
authors.forename: Akira
authors.initials: A
authors.lastname: Nishiyama
authors.forename: Michiko
authors.initials: M
authors.lastname: Takaoka
authors.forename: Takenobu
authors.initials: T
authors.lastname: Ota
authors.forename: Takayuki
authors.initials: T
authors.lastname: Ishikawa
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Narita
mesh_terms: D000328:Adult; D000339:Affect / Q000502:physiology; D001007:Anxiety / Q000523:psychology; D019992:Databases as Topic; D003729:Dental Care; D003863:Depression / Q000523:psychology; D005157:Facial Pain / Q000209:etiology* / Q000523:psychology; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000150:complications* / Q000523:psychology; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D010147:Pain Measurement; D012890:Sleep / Q000502:physiology; D012893:Sleep Wake Disorders / Q000523:psychology; D019224:Temporomandibular Joint Disc / Q000473:pathology*; D013705:Temporomandibular Joint Disorders / Q000150:complications* / Q000523:psychology; D013706:Temporomandibular Joint Dysfunction Syndrome / Q000150:complications* / Q000523:psychology; D055815:Young Adult