Three-dimensional Analysis of Cranial Vault and Position of Mandibular Fossa

Yamaguchi, Koji; Sasaki, Au; Kawajiri, Akemi; Fujimoto, Kouta; Uesato, Tadashige; Toyota, Akiko; Suda, Naoto

doi:10.5927/jjjd.30.267

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…The results of this study indicated that in the left and right sides of the cranium, there were significant differences in the positions of the articular process, pterygoid hamulus, styloid process and mastoid between patients with facial asymmetry and those with facial symmetry. These are attachment sites for masticatory and perioral muscles and are therefore closely related to functional aspects such as mandibular movement [ 15 , 23 ]. Differences in the anatomical position of the structures may result in asymmetrical functional movements and contribute to the growth of facial asymmetry [ 24 , 25 , 26 ].…”

Section: Discussionmentioning

confidence: 99%

Three-Dimensional Analysis of the Cranial Base Structure in Patients with Facial Asymmetry

Hayashi,

Tachiki,

Morikawa

et al. 2023

Diagnostics

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Facial asymmetry is often seen in patients with skeletal mandibular prognathism and is associated with deformities in the maxillofacial and head regions. The maxillofacial deviation is three-dimensional and affects not only the lateral deviation of the mandible and midface, but also the cranium. This study conducted a three-dimensional morphological evaluation of the cranial base morphology of patients with skeletal mandibular prognathism (ANB < 0°, Wits < 0 mm) with the aim of examining the relationship between deformities of the head region and facial asymmetry. Data obtained from computed tomography conducted during the initial examination of patients with and without skeletal mandibular prognathism with facial asymmetry were used. Differences in the position of structures present in the cranial base were measured, and the association between cranial deformities and mandibular deviation was assessed. The middle cranial base area and the lateral deviation of the mandibular fossa were significantly larger in patients with facial asymmetry compared to those without facial asymmetry. In addition, a correlation between the amount of mandibular deviation and the area of the anterior cranial base was identified in patients with significant cranial deformity (p = 0.012). Given the identified association between the structure of the head region and facial asymmetry, further studies are needed to determine the factors implicated in the growth process.

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Section: Discussionmentioning

confidence: 99%

Three-Dimensional Analysis of the Cranial Base Structure in Patients with Facial Asymmetry

Hayashi,

Tachiki,

Morikawa

et al. 2023

Diagnostics

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“…The length of a~e and the area of blocks 1~6 in all cases were measured. The following similar studies were used as references for the comparative method of measuring left-right differences in the cranium [22].…”

Section: Establishment Of Reference Points Reference Lines and Measur...mentioning

confidence: 99%

Morphological Evaluation of Cranium Facial Asymmetry in Class III Malocclusion Patients

et al. 2023

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The maxillofacial region of patients with facial asymmetry is deformed not only in the mandible but also in the maxilla, suggesting that the head region may also be deformed. Therefore, in this study, skeletally originated mandibular prognathism with facial asymmetry was evaluated in relation to cranial morphology. The cranial morphology of patients who visited the Chiba Dental Center of Tokyo Dental College and were diagnosed with skeletal mandibular prognathism with facial asymmetry (asymmetry group: ANB 0° or less; Menton deviation 4 mm or more; 30 subjects) and without facial asymmetry (symmetry group: ANB less than 0°; Menton deviation less than 3 mm) was measured and evaluated. As a method, the length and area of the cranium were measured using axial cephalometric radiographs. In the asymmetry group, there was a significant difference in the left–right difference in the long diameter of the posterior part of the cranium compared to the symmetry group (p = 0.009). The asymmetry group also had significant differences in the central and occipital areas of the cranium on the left and right sides compared to the symmetry group (p < 0.001). In the asymmetry group, the direction of Menton deviation and the direction of head region deviation coincided in about 70% of the cases. There was also a positive correlation between head deviation and the amount of Menton deviation. The results of this study suggested that patients with facial asymmetry had greater head deformity than patients without facial asymmetry.

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Relation between masseter muscle volumes and mandibular body lengths in skeletal Class III adult female cases without severe mandibular asymmetry

Fujimoto

Sasaki

Kawajiri

et al. 2022

Clinical and Investigative Orthodontics

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Three-dimensional Analysis of Cranial Vault and Position of Mandibular Fossa

Cited by 3 publications

References 10 publications

Three-Dimensional Analysis of the Cranial Base Structure in Patients with Facial Asymmetry

Three-Dimensional Analysis of the Cranial Base Structure in Patients with Facial Asymmetry

Morphological Evaluation of Cranium Facial Asymmetry in Class III Malocclusion Patients

Relation between masseter muscle volumes and mandibular body lengths in skeletal Class III adult female cases without severe mandibular asymmetry

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