• Journal of the korean academy of Pediatric Dentistry
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• v.30 no.3
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• pp.477-482
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• 2003

The pediatric condylar fracture occurs very frequently in the mandible, but this injury is occasionally ignored due to difficulty of diagnosis and no cooperation of patient. The adequate initial diagnosis and active treatment must be performed because delayed and improper treatment lead to possible severe complication such as TMJ ankylosis and reta rdation of mandibular development. Most pediatric condylar fracture is mainly performed by the conservative or functional treatment, but it may be required open reduction according to cases. In this study, activator is applied for functional treatment of pediatric condylar fracture and fair recovery of jaw function is acquired.

• The korean journal of orthodontics
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• v.34 no.3 s.104
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• pp.269-277
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• 2004

A modified removable appliance for molar distalization called C-activator was used in a 10-year old male patient with a Class II anterior deep bite malocclusion with upper arch discrepancy. The treatment plan involved correcting the Class ll relationship, distalizing both upper first molars, and regaining space for the erupting canines. The C-activator, which was used for 6 months, consisted of a labial framework formed from .036-in stainless steel wire and an acrylic monobloc. Both the closed helices of the labial framework were compressed for reactivation during the C-activator treatment period. C-activator mechanics simultaneously achieved distalization of the upper first molars into their proper positions and repositioning of the mandible. After 21 months of treatment, the correct oberbite and overjet was obtained and contributed to an Improvement in facial balance. The treatment results were stable 6 months after debonding. Fabrication and placement of the new appliance and clinical procedures are detailed, and the treatment sequence and results of this case are presented as follows.

• The Journal of the Petrological Society of Korea
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• v.21 no.2
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• pp.217-233
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• 2012

Major elements abundances of Cretaceous to Tertiary volcanic rocks in Kyongsang basin are similar with Southern Volcanic Zone (SVZ) in Andes. Sr, K, Rb, $Ba{\pm}Th$ abundances, which have low ionic charge, are selectively fertile, on the other hand Ta, Nb, Ce, P, Zr, Hf, Sm, Ti, Y, Yb, Sc, Cr abundances are low. K, Sr, Th show characteristic spikes and Nb show remarkable trough on trace elements spider diagram. Trace elements abundances are higher than that of Andes which is supposed to mantle sources of Kyongsang basin volcanic rocks are produced lower degree of partial melting than SVZ in Andes.

• The Journal of the Korean dental association
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• v.39 no.10 s.389
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• pp.854-865
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• 2001

• Journal of Dental Rehabilitation and Applied Science
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• v.17 no.2
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• pp.125-135
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• 2001

교합조정이나 대부분의 보철치료는 비가역적이어서 명확한 치료 계획이 없이는 섣불리 치료를 시작하지 말아야 한다. 명확한 치료 계획을 위해서는 증상의 원인 인자를 파악해야 하나, 때때로 그 원인이 불분명하여 환자에게 무어라 설명해야 할지 난감한 경우가 많은 것이 바로 이 분야이다. 교합 재구성을 함에 있어서 생체 역학과 근육의 활동량을 고려해야 하는 것은 이미 주지하고 있는 바이다. 즉, 악관절이나 치아에 대한 하중을 조절함으로써 근조직의 안정을 도모하여 적정한 하악위와 원활한 하악운동을 획득하는 것이 교합 재구성의 큰 목적 중 하나이다.

• Journal of The Korean Society of Integrative Medicine
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• v.3 no.3
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• pp.43-47
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• 2015

Purpose : The aim of this study was to report a follow-up study on the prognosis following the arthrocentsis for the painful temporomandibular dysfunction not responsible to the conservative splint therapies. Arthrocentsis of TMJ is a simple precedure that can be performed in the out-patient clinic under the local anesthesia without any reported complications. Method : Seventy patients had been followed after the arthrocentsis for over 6 months. Maximum mouth opening, TMJ pain, TMJ noise, and their changes by time were examined and compared statistically. The effectiveness of the treatment was evaluated in terms of the postoperative range of maximal mouth opening (MMO) and the degree of postoperative pain score. Predictors which was analyzed were age, duration of painful locking, MMO, the degree of pain, preoperative clicking and the amounts of irrigation fluid. Result : The result of this study were as follow; 1) Mouth opening was improved from 32.6 mm to 42.4 mm in the maximum inter-incisal distance. 2) TMJ pain was decreased in 45.7%. 3) TMJ clicking and noise disappeared in 60.0%, but recurred in 40.0%. Conclusion : Amounts of irrigated solution recovered to normal MMO and the appeareance of perioperative clkicking may be predictors of the successful results of arthrocenetesis of ADD without reduction of TMJ.

• Journal of the korean academy of Pediatric Dentistry
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• v.32 no.4
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• pp.675-681
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• 2005

The Horseshoe appliance was introduced by Dr. Schwarz, and it is used to correct sagittal relationships by elastic force in class III malocclusion. It minimizes the increment of lower anterior facial height and allows the mandible to be repositioned harmoniously with the soft tissue and muscle matrix of the jaw It has the advantages of better patient cooperation, easier construction, and more effective modification. In the patients who were treated with Horseshoe appliance, forward growth of maxilla and counterclockwise rotation of occlusal plane with labioversion of maxillary incisors and linguoversion of mandibular incisors were obtained. Minimum downward and backward rotation of mandible was accepted, so increasing of lower anterior facial height was minimized.

• The Korean Journal of Health Service Management
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• v.8 no.1
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• pp.87-102
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• 2014

This study is a descriptive research one and its purpose is to understand subjective xerostomia, JFL and quality of life of the elderly and to apprehend its variable correlation and variables which influence on the OHRQOL. Subjects in this study were over 65-year-old the elderly in city B and the data of 116 ones were collected using the questionnaires from May 6, 2013 to June 7 from them. Collected data were analyzed as descriptive statistics, t-test, one-way ANOVA, Sheffe, Pearson's correlation coefficient and Multiple Regression using program SPSS 18.0. The most influenced factors of OHRQOL were JFL(${\beta}$=-.366), xerostomia(${\beta}$=-.248) and diseases of oral cavity (gingivitis)(${\beta}$=-.172) in order. These factors occupied 73% of OHRQOL. Therefore, development of nursing intervention to develop a program for the improvement in behavior and education to reduce xerostomia, JFL, gingivitis and to improve the OHRQOL elderly development of nursing interventions are required.

• Journal of Oral Medicine and Pain
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• v.17 no.1
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• pp.51-60
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• 1992

44 Temporomandibular Disorders(TMDs) patients with non-trauma and non-iatrogenic origin pressented at Wonkwang University Dental Hospital. They were grouped into experimental subjects and 85 persons without TMSDs were classified into control groups. The objectives of this study was to investigate the effects of recent life changes on the symptom severity and treatment course of TMDs. For that purpose, the author used several scales and indices, namely, Social Readjustment Rating Scale(SRRS) devised by Holmes and Rahe, SRRS-Korean revision by Hong and Jeong, Helkimos Anamnestic index, Clinical Dysfunction index, and Visual Analogue Scale treatment index(VAS Ti) transformed from VAS by the author. Data resulted from the investigation were collected by scale or index and processed with SPSS. The obtained results were as follows : 1. Life change units(LCU) and values of indices of experimental group were higher than those of control group. 2. Life change units recorded with SRRS-Korean revision were higher than those with original SRRS in all cases and significant positive correlations existed, between he two Therefore, clinical use of original SRRS in Korea is reliable and valid. 3. In experimental group, LCU were positively correlated with Helkimos Clinical Dysfunction index and VAS treatment index, but in control group LCU were not correlated with any items. From this, increase of life changes in patient with TMDs is likely to aggravate TMJ dysfunction and more likely to complicate treatment course.

• The Journal of Engineering Geology
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• v.6 no.2
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• pp.103-110
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• 1996

This study shows the variation of poisson's ratio according to stress for the Cretaceous sandstones and shale in the Euiseoung Subbasin. To make a mechanical experiment, samples prepared with 3.0 cm in diameter and 6.2 cm in length were used in testing stress and strain. Generally poisson's ratio has been considered as one of properties, but contrary to steel, the test result makes sure that poisson's ratio has functional relation to stress. I had used four methods to calculate poisson's ratio, Poisson's ratio shows considerable different results according to the calculating, method but it has similar tendency in an elastic limit. Poisson' s ratio increases rapidly and is distinguished clearly in internal fracture region according to the calculating method. Poisson's ratio of sandstone and shale is different from one another in low and high stress regimes,but it is linearly proportional to the stress in an elastic regimes, that is, ${\nu}_t={\;}{\nu}_0+P_{\sigma}({\nu}_0$:first stage Poisson's ratio, ${\nu}_t$:poisson's ratio, P: poisson's coefficient, $\sigma$:stress). Poisson's ratios of two kinds of rock samples show continuous variation from 0.1 to 0.21 in an elastic regime. The variation of poisson's ratio is much wider in an internal fracture regine. It varies from 0.22 to 0.45 in sandstone, which is out of elastic regime.