title: Unilateral posterior crossbite is not associated with TMJ clicking in young adolescents.
abstract: Unilateral posterior crossbite has been considered as a risk factor for temporomandibular joint clicking, with conflicting findings. The aim of this study was to investigate a possible association between unilateral posterior crossbite and temporomandibular disk displacement with reduction, by means of a survey carried out in young adolescents recruited from three schools. The sample included 1291 participants (708 males and 583 females) with a mean age of 12.3 yrs (range, 10.1-16.1 yrs), who underwent an orthodontic and functional examination performed by two independent examiners. Unilateral posterior crossbite was found in 157 participants (12.2%). Fifty-three participants (4.1%) were diagnosed as having disk displacement with reduction. Logistic regression analysis failed to reveal a significant association between unilateral posterior crossbite and disk displacement with reduction (odds ratio = 1.3; confidence limits = 0.6-2.9). Posterior unilateral crossbite does not appear to be a risk factor for temporomandibular joint clicking, at least in young adolescents.
authors.affiliation: School of Dentistry, Department of Oral, Dental and Maxillo-Facial Sciences, Section of Orthodontics and Clinical Gnathology, University of Naples "Federico II", Via Pansini, 5, I-80131, Naples, Italy. farella@unina.it
authors.forename: M
authors.initials: M
authors.lastname: Farella
authors.forename: A
authors.initials: A
authors.lastname: Michelotti
authors.forename: G
authors.initials: G
authors.lastname: Iodice
authors.forename: S
authors.initials: S
authors.lastname: Milani
authors.forename: R
authors.initials: R
authors.lastname: Martina
mesh_terms: D000293:Adolescent; D016009:Chi-Square Distribution; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000209:etiology; D016015:Logistic Models; D008297:Male; D008310:Malocclusion / Q000150:complications*; D016017:Odds Ratio; D013705:Temporomandibular Joint Disorders / Q000209:etiology*