Condylar and ramal vertical asymmetry in unilateral and bilateral posterior crossbite patients and a normal occlusion sample

Uysal, Tancan; Şişman, Yıldıray; Kurt, Gökmen; Ramoğlu, Sabri İlhan

doi:10.1016/j.ajodo.2007.06.019

Cited by 68 publications

(95 citation statements)

References 29 publications

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“…17 This has been demonstrated in different studies mostly based on anthropometric 21 and radiographic 22 assessments. Uysal et al 5 found similar condylar, ramal, and condylar-plusramal height measurements in posterior crossbite and normo-occlusion patients, but also reported condylar asymmetry in the side-comparison of the normal occlusion subjects according to the asymmetry index formula. 22 Also, in another study, facial asymmetry is reported to be a naturally occurring phenomenon, and there is no truly symmetrical face regardless of the age of the individual.…”

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confidence: 93%

“…The results revealed that bilateral crossbite patients had asymmetrical mandibles in general. Although there are a lot of studies concerning mandibular morphological and functional asymmetries in crossbite patients, 5,16,23 no published study including the volumetric assessment of the mandible and its components in bilateral crossbite patients was found in the literature. Thus, we could not compare the present findings with those of any other study.…”

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confidence: 99%

“…Also, the asymmetrical function and activity of the jaws and muscles in posterior crossbite patients were reported to cause different development of the right and left sides of the mandible. 5 The studies of adolescents and adults have revealed that patients with posterior crossbite have an increased risk to develop craniomandibular disorders, showing more signs and symptoms of these problems. 6 In most cases, the crossbite is accompanied by a mandibular shift, a so-called forced crossbite, which causes midline deviation.…”

Section: Introductionmentioning

confidence: 99%

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Mandibular asymmetry in unilateral and bilateral posterior crossbite patients using cone-beam computed tomography

Veli¹,

Uysal²,

Özer³

et al. 2011

The Angle Orthodontist

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Objective: To test the hypotheses that (1) there is no difference in mandibular asymmetry between the crossbite and normal side in a unilateral crossbite group (UCG) and between the right and left sides in a bilateral crossbite group (BCG) and a control group (CG); and (2) there is no significant difference in mandibular asymmetry among crossbite groups and control group. Materials and Methods: The cone-beam computed tomography scans of three groups were studied: (1) 15 patients (6 male, 9 female; mean age: 13.51 6 2.03 years) with unilateral posterior crossbite; (2) 15 patients (8 male, 7 female; mean age: 13.36 6 2.12 years) with bilateral posterior crossbite; and (3) 15 patients (8 male, 7 female; mean age: 13.46 6 1.53 years) as a control group. Fourteen parameters (eight linear, three surface, and three volumetric) were measured. Side comparisons were analyzed with paired samples t-test, and for the intergroup comparison, analysis of variance (ANOVA) and Tukey tests were used at the P , .05 level. Results: According to side comparisons, no statistically significant difference was found in the UCG. There were statistically significant differences in hemimandibular (P 5 .008) and ramal (P 5 .004) volumes for the BCG and in ramal height (P 5 .024) and body length (P 5 .021) for the CG. Intergroup comparisons revealed significant differences in hemimandibular (P 5 .002) and body volume (P , .001) for the normal side of the UCG and left sides of the other groups, and in angular unit length (P 5 .025) and condylar width (P 5 .007) for the crossbite side of the UCG and the right sides of the other groups. Conclusions: Contrary to UCG, CG and BCG were found to have side-specific asymmetry. Skeletal components of the mandible have significant asymmetry among the crossbite groups and the CG. (Angle Orthod. 2011;81:966-974.)

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confidence: 93%

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confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mandibular asymmetry in unilateral and bilateral posterior crossbite patients using cone-beam computed tomography

Veli¹,

Uysal²,

Özer³

et al. 2011

The Angle Orthodontist

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“…20,21 The cost-benefit relationship should be taken into consideration because corrective treatment can help in eliminating the functional deviations and possible asymmetries in both the condyle, the mandibular ramus, and of the face. 22 Despite the assessment of volume and stresses on the mandibular condyle in young adults, who did not show pain or dysfunction of TMJ, Tecco et al 23 reported no statistically significant differences between the crossed and non-crossed sides. They also indicate that there is a statistical difference between genders, males presenting a slightly higher volume compared to females.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of mandibular condyles in children with unilateral posterior crossbite

2015

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Abstract:The relationship of mandibular condyle dimensions and its association with unilateral posterior crossbite (UPXB) has been suggested in the literature. The purpose of this prospective study was to evaluate mandibular condyles on the left and right sides and between crossed and non-crossed sides in the sagittal and coronal planes, using cone-beam computed tomography (CBCT). Twenty CBCT images of 40 temporo mandibular joints (TMJs) in individuals in mixed dentition phase, which included 9 males (mean 7.9 years) and 11 females (mean 8.2 years), with unilateral posterior crossbite without premature contacts and functional mandibular shifts and with transverse maxillary deficiency. The criteria for sample exclusion included the presence of painful symptoms, facial trauma history, systemic diseases such as juvenile rheumatoid arthritis, mouth opening limitation (< 40 mm), congenital or genetic anomalies, and skeletal asymmetries that may result in TMJ disorders. Dimensional measurements of the condyles between the right and left sides and crossed and non-crossed sides in sagittal and coronal view were made. There was no significant difference between the measurements of the crossed and non-crossed sides in both sagittal and coronal view. These findings suggest that the presence of unilateral posterior crossbite in children with UPXB did not result in changes between the mandibular condyles in the right and left sides or between the crossed and non-crossed sides in the coronal or sagittal plane.

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“…Then, the panoramic radiograph can be used to evaluate condylar mandibular asymmetry with 6% difference by Habets' formula and 93% difference by Kjellberg's technique [2,7,18,19]. Several authors have used this method to assess mandibular asymmetry in patients with temporomandibular disorders (TMD), unilateral and bilateral posterior crossbites, various sagittal malocclusions, and cleft lip and palate [7,20,21]. The incidence of 13% in 605 primary school students in Genoa showed malocclusions, wrong posture, and ocular divergences disorders and required multidisciplinary medical approach [22].…”

Section: Introductionmentioning

confidence: 99%

Exclusion ofpituitary homeobox 2gene polymorphism in vertical mandibular asymmetry patients: a preliminary study

Sofyanti

Boel

Soegiharto

et al. 2018

IOP Conf. Ser.: Earth Environ. Sci.

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Condylar and ramal vertical asymmetry in unilateral and bilateral posterior crossbite patients and a normal occlusion sample

Cited by 68 publications

References 29 publications

Mandibular asymmetry in unilateral and bilateral posterior crossbite patients using cone-beam computed tomography

Mandibular asymmetry in unilateral and bilateral posterior crossbite patients using cone-beam computed tomography

Evaluation of mandibular condyles in children with unilateral posterior crossbite

Exclusion ofpituitary homeobox 2gene polymorphism in vertical mandibular asymmetry patients: a preliminary study

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