• Journal of the korean academy of Pediatric Dentistry
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• v.32 no.2
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• pp.229-235
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• 2005

A problem that affects children's dentitions is the harmful habit which is difficult to treat. Harmful habits for children are such as abnormal swallowing patterns, low/forward tongue rest posture problem, habitual open-lips resting posture, habitual mouth-breathing, excessive digital sucking habit and tongue thrusting. Tongue thrusting habits cause a bit of cranio-facial skeletal changes and a great deal of dental malocclusion such as anterior open bite. Anterior open bite causes masticatory, speech, and esthetic problems in the growing children and difficulties in diagnosis, treatment, and the prediction of its prognosis. The treatments of such abnormal behaviors involve orofacial myofunctional therapy and using of habit breaking appliance. The prognosis is not determined by the presence of severity of oral habit but the skeletal tendency of the patient. Usage of tongue crib resulted in not only the discontinuance of the habit but also improvement in overbite and overbite. This study showed that relatively successful results could be generated by using removable tongue crib and myofunctional therapy in the case of openbite related to tongue thrusting habit.

• The korean journal of orthodontics
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• v.18 no.2
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• pp.475-488
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• 1988

Certain malocclusion are associated with specific "facial type," and it is important for the clinician to classify the common facial characteristic of each patient. Because the reaction to treatment mechanics and the stability of the denture is depended upon the analysis of the facial pattern. Basically, there are 3 district facial types or patterns under which almost all malocclusion can be classified. 1. mesofacial is the most average growth. 2. brachyfacial which is a horizontal growth pattern has a week muscle, with dental arch, deep bite. 3. dolichofacial which is a vertical growth pattern has a strong muscle, narrow dental arch, open bite. Brachyfacial pattern show a resistant to mandibular rotation during treatment can accept a more protrusive denture and are prominantly nonextraction, whereas dolichofacial patterns tend to open during treatment require a more retracted denture in order to assure post-treatment stability. Brachyfacial pattern would better treat to use extrusive force system, whereas dolichofacial pattern treat to use intrusive force system with head gear and intermaxillary elastics.

• The Journal of Korea Assosiation for Disability and Oral Health
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• v.5 no.2
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• pp.96-99
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• 2009

Macroglossia is a tongue pathology of multiple etiology as systemic disease like cerebral palsy and Down syndrome etc. It can cause abnormal oral conditions including anterior open bite or dyspnea by changing occlusion and oral habits. So many handicapped children who have macroglossia need to get surgery of large tongue to improve esthetics, function, and treatment stability. The purpose of this report is to evaluate 2 patients, one has cerebral palsy and the other lymphangioma, who have experience of glossectomy with review of literature.

• The Journal of the Korean dental association
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• v.10 no.6
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• pp.373-377
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• 1972

The patient, a 17-year old Korean male, had difficulty in mastication, and a protruding lower jaw combined with open bite. Cosmetic complaint was right displacement of mandible. He was corrected by reversed L-shaped bilateral Osteostomy in ascending ramus.

• The Journal of the Korean dental association
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• v.10 no.2
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• pp.91-96
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• 1972

The tests on the oral capacties which are divided into five groups on centric occlusion position, physiologic rest position, two mm open bite position, four mm open bite position, and maximum opening position of the mandible were conducted on the one hundread normal dental college students and staffs. The aims were to study the changeability of the fundamental oral structure, to get some helpful informations for the full denture wearers and related physiology, and also to find out further experimental standards. The results were as follows; 1. There was also some volumetric space in centric occlusion position. 2. The greater the voluntary opening degree of the mandible was, the greater the oral volumetric capacity was. 3. There were no correlations between the oral capacity and height, weight, and cheek thickness. 4. There were no correlations between the centric occlusion position and physiologic rest position, and voluntary positions of the mandible. 5. The inserted material into the oral cavity was much influential to the physiologic rest position.

• The korean journal of orthodontics
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• v.19 no.3
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• pp.147-160
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• 1989

Long face patients are characterized by excessive anterior facial height, lip incompetence at rest, anterior open bite, and gummy smile. A major problem is an inferior rotation of the posterior maxilla and upper molars. Long face patients have been the most difficult for orthodontist to treat successfully. In growing patients, the methods for impeding excessive vertical growth have been used high pull head gear, functional appliance, and combined type of two. One significant improvement comes from using a full arch splint to deliver force to the maxilla more vertically. In adult patients, orthodontic camouflage treatment is biomechanically difficult and doesn't work when the problem is primarilly vertical. Surgical maxillary impaction provides a means for successfully treating most of problems. Also, superior reposition of the chin via a mandibular inferior border osteotomy is effective in decrease of lower anterior facial height and correction of the poor chin-lip balance. Post-surgical stability and the physiologic response are good. The coordinated orthodontic and surgical treatment is necessary for solution the difficult skeletal deformity.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 1995.10a
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• pp.157-166
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• 1995

A large crank shaft for ship engine consists of several components, such as throw, jornal, pin and flange. These compoents are individually made by open-die forging followed by machining and they are thermally fitted to form the crankshaft. In the present investigation, it was attempted to design an optimum preform for the throw by use of the spread coefficient. The spread coefficient found in the literature was confirmed by comparison with experimental results using plasticine. However, the preform designed by the spread coefficient was unable to produce the final product. The reason was found that the spread coefficient differs distinctly for the magnitude of bite ratio. Therefore, another spread coefficient, especially for low bite ratios, was proposed and the preform was redesigned. It was found that the new preform was able to produce the final product.

• The Journal of the Korean dental association
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• v.16 no.9 s.112
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• pp.675-681
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• 1978

• 대한치과교정학회:학술대회논문집
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• 2005.11a
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• pp.69.1-69.1
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• 2005

• Journal of Dental Rehabilitation and Applied Science
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• v.39 no.2
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• pp.104-104
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• 2023