1.Correction of unilateral posterior crossbite through the use of RME and multibracket appliances.
Ryoon Ki HONG ; Masahiko TSURUTA
Korean Journal of Orthodontics 1997;27(6):1005-1010
Problems in the transverse plane of space are seen primarily as posterior crossbites, which may be due to displacement of teeth relative to their supprting bone (dental crossbite), or to a narrow maxilla or wide mandible (skeletal crossbite). It is important to specify, in the sense of the location of the anatomic abnormality, why the crossbite exists. Where a maxillary expansion may be considered as part of a treatment aiming to coordinate the mazillary and mandibular arches. For thr correction of maxillary skeletal constriction, rapid maxillary expansion procedure (RME) is indicated. In this case report, the evaluation of P-A cephalo-grams before, after RME, and after active treatment will serve as a focus.
Constriction
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Malocclusion*
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Mandible
;
Maxilla
;
Palatal Expansion Technique
;
Tooth
2.Incisor inclination indicator for anterior torque control during retraction in lingual orthodontic treatment.
Ryoon Ki HONG ; Tae Gun KIM ; Tae Woo KIM
Korean Journal of Orthodontics 2004;34(6):544-554
A device called incisor inclination indicator to control the axial inclinations of the incisors in the diagnostic setup is introduced. It is used to control the retraction of the maxillary and mandibular incisors. In this article, we describe the use of the incisor inclination indicator to prescribe adequate torque into the anterior lingual brackets and evaluate the results of treatment in a bimaxillary dentoalveolar protrusion case that underwent orthodontic treatment with the pretorqued anterior lingual brackets. Retraction of the maxillary and mandibular incisors was achieved with careful control of the axial inclination. It is indicated that the use of the incisor inclination indicator is an effective adjunctive laboratory procedure for anterior torque control during retraction in lingual orthodontic treatment.
Incisor*
;
Torque*
3.Pseudoaneurysm of the Anterior Tibial Artery: A Case Report.
Jong Ryoon BAEK ; Hong Ki PARK ; Sang Hoon YANG
Journal of Korean Foot and Ankle Society 2007;11(1):104-106
Pseudoaneurysm of the anterior tibial artery is a rare cause of pain and swelling of the lower leg and the foot following minor sports injuries. When there is no definite musculoskeletal cause of pain, it is important to consider pseudoaneurysm. Early diagnosis and management are essential for the successful outcome. MRI and angiogram are useful for early diagnosis. We report a case of pseudoaneurysm of the anterior tibial artery following minor sports injury. The patient experienced complete relief of the symptoms after resection of the pseudoaneurysm.
Aneurysm, False*
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Athletic Injuries
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Early Diagnosis
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Foot
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Humans
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Leg
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Magnetic Resonance Imaging
;
Tibial Arteries*
4.The Significance of Calcaneal Posterior Tuberosity Fragment Reduction When Treated with Open Reduction in Displaced Intra-Articular Calcaneal Fractures.
Hong Ki PARK ; Jong Ryoon BAEK ; Jang Seok CHOI ; Sang Jin LEE ; Je Won PAIK
Journal of the Korean Fracture Society 2016;29(4):233-241
PURPOSE: We attempt to evaluate the significance of calcaneal posterior tuberosity fragment reduction when treated with surgical open reduction in displaced intra-articular calcaneal fractures. MATERIALS AND METHODS: A total of 90 patients with displaced intra-articular calcaneal fracture, between January 2010 and December 2015, treated with open reduction and internal fixation were enrolled in this study. At postoperative 3 months, we evaluated the reduction state of calcaneal posterior tuberosity fragment by measuring the degree of lateral displacement of the posterior tuberosity fragment on the calcaneal axial view. Moreover, we also evaluated the difference in the calcaneal length and height with the uninjured side on the lateral view of both sides. In addition, we estimated the reduction state of the posterior facet by measuring the degree of gap and step-off on the semi-coronal view of postoperative computed tomography and estimated the restoration of calcaneal angle by measuring the difference in Böhler's and Gissane angle with the uninjured side on the lateral view of both sides. RESULTS: The correlation coefficient with 3 components for evaluating the reduction state of posterior tuberosity fragment and gap and step-off of posterior facet was r=0.538, 0.467, r=0.505, 0.456, r=0.518, and 0.493, respectively, and restoration of Böhler's and Gissane angle was r=0.647, 0.579, r=0.684, 0.630, r=0.670, and 0.628, respectively. The relationship of each component shows a significant correlation as all p-values were <0.01. CONCLUSION: The precise reduction of calcaneal posterior tuberosity fragment developed by the primary fracture line was considered as an important process of anatomical reduction of calcaneal body, including the posterior facet and calcaneal angle restoration.
Calcaneus
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Humans
;
Intra-Articular Fractures
5.Orthodontic treatment of gummy smile by maxillary total intrusion with a midpalatal absolute anchorage system.
Ryoon Ki HONG ; Seung Min LIM ; Jung Min HEO ; Seung Hak BAEK
The Korean Journal of Orthodontics 2013;43(3):147-158
This article describes the orthodontic treatment of a 31-year-old Korean female patient with gummy smile and crowding. The patient showed excessive gingival display in both the anterior and posterior areas and a large difference in gingival heights between the anterior and posterior teeth in the maxilla. To correct the gummy smile, we elected to intrude the entire maxillary dentition instead of focusing only on the maxillary anterior teeth. Alignment and leveling were performed, and a midpalatal absolute anchorage system as well as a modified lingual arch was designed to achieve posterosuperior movement of the entire upper dentition. The active treatment period was 18 months. The gummy smile and crowding were corrected, and the results were stable at 21 months post-treatment.
Crowding
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Dentition
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Female
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Humans
;
Maxilla
;
Tooth
6.Assessment of antero-posterior skeletal relationships in adult Korean patients in the natural head position and centric relation.
Jang Hoon AHN ; Kwang Hak BAE ; Young Ju PARK ; Ryoon Ki HONG ; Joeng Hun NAM ; Mi Ja KIM
Korean Journal of Orthodontics 2010;40(6):421-431
OBJECTIVE: This study aimed to verify the intra-individual reproducibility of the natural head position (NHP) in adult Korean patients in the centric relation (CR) position and to prove the inter-individual variability of the Frankfurt horizontal (FH) plane and sella-nasion (SN) line compared to the true horizontal line (THL). In addition, the study aimed to investigate the correlations between linear measurements from A-point and B-point to the nasion true vertical line (NTVL) and angular measurements from A-point and B-point to the SN line. METHODS: Two lateral cephalograms were taken of 116 subjects (23 males, 93 females) with CR wax bites in a NHP at a one-week interval. RESULTS: Method errors of three variables and intraclass correlation coefficients of six parameters proved the intra-individual reproducibility of NHP (p < 0.001). The angle of the FH to the THL was not significantly different from 0degrees (p > 0.05), but it was clinically variable (SD 3.89degrees) on the inter-individual level. Conversely, the angle of the SN line to the THL was significantly different from 7degrees (p < 0.05). Very low correlation was found between the linear measurements and angular measurements of A-point and B-point (p < 0.01). CONCLUSIONS: The NTVL could be a useful reference line for assessing the antero-posterior position of the maxilla and mandibleof Korean adult patients in NHP and CR.
Adult
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Bites and Stings
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Centric Relation
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Head
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Humans
;
Male
;
Maxilla
7.The Value of Local Flaps in Lower Extrimity Reconstruction.
Jong Ryoon BAEK ; Jong Woong PARK ; Beom Koo LEE ; Do Hyun MOON ; Young Kyu KIM ; Hong Ki PARK ; Deuk Soo JUN ; Jae Ang SIM ; Won Ju SHIN ; Boo Kyung KWON
Journal of the Korean Microsurgical Society 2008;17(2):75-81
PURPOSE: The aim of this study was to evaluate the outcome and the effectiveness of local flaps in lower extremity reconstruction. MATERIALS AND METHODS: We have performed lower extremity reconstruction with local flap in 14 cases (10 males and 4 females) from May 2006 to February 2008. The mean age was 40.1 years (range, 16~67). The defect site was the tibia in 5 cases, the ankle in 1 case and the foot in 8 cases. The local flaps were reverse flow sural artery flap in 7 cases, gastrocnemius flap in 3 cases, lateral supramalleolar flap in 2 cases, dorsalis pedis flap in 1 case and medial hemisoleus flap in 1 case. RESULTS: All flaps were survived. Venous congestion was developed in 1 case of the rerverse flow sural artery flap but healed with secondary rotational flap. Other flaps were good without any complications. CONCLUSION: If we choose precisely indicated local flap in lower extremity reconstruction, the resultant coverage of defect would be excellent.
Animals
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Ankle
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Arteries
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Foot
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Humans
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Hyperemia
;
Lower Extremity
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Male
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Organic Chemicals
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Tibia