Mandibular Characteristics in Dentofacial Dysmorphosis

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Applied Dentistry and Oral Sciences".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 4542

Special Issue Editors

Department of Oral and Maxillofacial Surgery, School of Dentistry, Wonkwang University, Iksan, Korea
Interests: deep learning based craniofacial research; three dimensional architectural and structural analysis of the face; functional reconstruction of the oro-mandibular defect caused by tumor, congenital deformity, and trauma
Department of Oral Maxllofacial Surgery, School of Dentistry, Wonkwang University, Iksan, Korea
Interests: craniofacial pathogenesis; photodynamic therapy; musculoskeletal disease of head and neck

Special Issue Information

Dear Colleagues,

Dentofacial dysmorphosis exhibits various aspects such as prognathism, retrognathism, maxillary hypoplasia, and asymmetry. For their treatment, several techniques of orthognathic surgery or orthodontics are applied. Meanwhile, the stomatognathic system is composed of static and dynamic structures, and its harmonious functioning is based on the balanced relationship between them. In addition, hard and soft cephalic structures arise, grow, and organize in a mutual balance. Cranio-facial skeletons constantly reflect these influences and their related functional conditions. Therefore, the genesis of a malocclusion is usually linked to an impairment of some kind to eugnathic growth that involves to various extents the mandible, the maxilla, and the functional matrix (tongue and facial muscles).

The aim of this Special Issue is to attract world-leading researchers in the area of dentofacial dysmorphosis in an effort to highlight the latest exciting developments, discuss the underlying etiology of various aspects in dentofacial dysmorphosis, and apply the appropriate treatment regimen. 

Dr. Bong Chul Kim
Dr. Eun Joo Choi
Guest Editors

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Keywords

  • dentofacial dysmorphosis
  • orthognathic surgery
  • prognathism
  • retrognathia
  • facial asymmetry

Published Papers (2 papers)

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Research

9 pages, 1131 KiB  
Article
Anatomical Characteristics of the Lateral Pterygoid Muscle in Mandibular Prognathism
by Hwikang Kim, Dongsun Shin, Jaehyun Kang, Seewoon Kim, Hunjun Lim, Jun Lee and Bongchul Kim
Appl. Sci. 2021, 11(17), 7970; https://0-doi-org.brum.beds.ac.uk/10.3390/app11177970 - 28 Aug 2021
Cited by 3 | Viewed by 1723
Abstract
Mandibular prognathism is one of the most concerning subjects in the oral and maxillofacial fields. In our previous studies, we attempted to clarify the etiology of mandibular prognathism. They revealed that one of the major characteristics of mandibular prognathism was the lower volume/length [...] Read more.
Mandibular prognathism is one of the most concerning subjects in the oral and maxillofacial fields. In our previous studies, we attempted to clarify the etiology of mandibular prognathism. They revealed that one of the major characteristics of mandibular prognathism was the lower volume/length ratio of the mandibular condyle and body compared to normal, and the masseter muscle showed parallelism with this. This study aimed to evaluate the relationship between mandibular prognathism and the lateral pterygoid muscle by measuring the orientation and volume/length ratio of the lateral pterygoid muscle. Computed tomography was used to calculate the volume/length ratio of the lateral pterygoid muscle in 60 Korean individuals. Mimics 10.0 and Maya version 2018 were used to reconstruct the surface area and surface planes. The results showed that the prognathic group showed smaller lateral pterygoid volume/length ratios compared to the normal group (p < 0.05). In addition, the normal group displayed a larger horizontal angle (p < 0.05) to the mandibular and palatal planes than the prognathic group. This demonstrated that the mechanical drawback of the lateral pterygoid in the prognathic group is associated with mandibular prognathism. Full article
(This article belongs to the Special Issue Mandibular Characteristics in Dentofacial Dysmorphosis)
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11 pages, 2164 KiB  
Article
Anatomical Characteristics of the Masseter Muscle in Mandibular Prognathism
by Ji Ho Yang, Dong Sun Shin, Jeong-Hun Yoo, Hun Jun Lim, Jun Lee and Bong Chul Kim
Appl. Sci. 2021, 11(10), 4444; https://0-doi-org.brum.beds.ac.uk/10.3390/app11104444 - 13 May 2021
Cited by 6 | Viewed by 2174
Abstract
Mandibular prognathism causes functional and esthetic problems. Therefore, many studies have been conducted to understand its etiology. Following our previous study, which revealed that the major characteristic of the mandible with prognathism is the volume/length ratio of the mandibular body and condyle, we [...] Read more.
Mandibular prognathism causes functional and esthetic problems. Therefore, many studies have been conducted to understand its etiology. Following our previous study, which revealed that the major characteristic of the mandible with prognathism is the volume/length ratio of the mandibular body and condyle, we analyzed the volume and orientation of the masseter muscle, which inserts into the mandibular body, expecting that the difference in the size of the masseter muscle causes the difference in the mandibular size. This study compared the masseter muscle of the participants in the prognathic group to those in the normal group on the volume/length ratio and orientation. The masseter muscle ratios (volume/length); the angle between the superficial and deep head of the masseter muscle; and the three planes (the palatal, occlusal, and mandibular) were analyzed. A total of 30 participants constituted the normal group (male: 15, female: 15) and 30 patients, the prognathic group (male: 15, female: 15). The results showed that the volume/length ratio of the masseter of the normal group was greater than that of the prognathic group (p < 0.05). In addition, the orientation of both the superficial and deep head of the masseter of the participants in the normal group was more vertical with respect to the mandibular plane than that of the prognathic group (p < 0.05). We concluded that the mechanical disadvantage of the masseter muscle of the prognathic group is attributed to mandibular prognathism. Full article
(This article belongs to the Special Issue Mandibular Characteristics in Dentofacial Dysmorphosis)
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