1.A comparison of soft tissue outcomes in skeletal Class II malocclusion: Anterior segmental osteotomy vs. non-surgical orthodontic treatment
Hyunhee CHOO ; Young Ho KIM ; Pureum HONG ; Young-Jin CHOI ; Reuben KIM ; Hwa Sung CHAE
The Korean Journal of Orthodontics 2025;55(3):224-233
Objective:
Temporary anchorage devices (TADs) have considerably reduced the need for anterior segmental osteotomy (ASO) in patients with Class I malocclusion. Most previous studies have been published before the widespread use of TADs, thus warranting new guidelines for determining the optimal approach for surgery and orthodontic treatment. This study aimed to establish guidelines on the choice between ASO and non-ASO (NASO) based on soft tissue considerations.
Methods:
Sixty-seven patients diagnosed with skeletal Class II malocclusion were divided into the ASO (n = 31) and NASO (n = 36) groups. Cephalometric analyses were used to compare the initial and final records to assess the effect of treatment on soft tissues. The interlabial gap, upper lip anterior to the E-line, lower lip anterior to the E-line, H-angle, upper lip to the nasion-perpendicular line, and nasolabial angle were evaluated. In particular, a proportional difference indicator between the upper and lower lips relative to the pogonion angle between the facial plane and CK line was presented, followed by statistics analyses. Statistical significance was set at P < 0.05.
Results:
Both groups demonstrated normal proportions of the upper and lower lips; however, significant differences favoring ASO over NASO in terms of soft tissue changes were observed for several variables.
Conclusions
ASO is advised if the required adjustment for the upper and lower lips is –4.0 mm and –5.0 mm, respectively. For modifications of –2.0 mm, NASO is preferred. This study provides clinical guidelines on the choice between ASO and NASO based on the required lip movement measurements.
2.A comparison of soft tissue outcomes in skeletal Class II malocclusion: Anterior segmental osteotomy vs. non-surgical orthodontic treatment
Hyunhee CHOO ; Young Ho KIM ; Pureum HONG ; Young-Jin CHOI ; Reuben KIM ; Hwa Sung CHAE
The Korean Journal of Orthodontics 2025;55(3):224-233
Objective:
Temporary anchorage devices (TADs) have considerably reduced the need for anterior segmental osteotomy (ASO) in patients with Class I malocclusion. Most previous studies have been published before the widespread use of TADs, thus warranting new guidelines for determining the optimal approach for surgery and orthodontic treatment. This study aimed to establish guidelines on the choice between ASO and non-ASO (NASO) based on soft tissue considerations.
Methods:
Sixty-seven patients diagnosed with skeletal Class II malocclusion were divided into the ASO (n = 31) and NASO (n = 36) groups. Cephalometric analyses were used to compare the initial and final records to assess the effect of treatment on soft tissues. The interlabial gap, upper lip anterior to the E-line, lower lip anterior to the E-line, H-angle, upper lip to the nasion-perpendicular line, and nasolabial angle were evaluated. In particular, a proportional difference indicator between the upper and lower lips relative to the pogonion angle between the facial plane and CK line was presented, followed by statistics analyses. Statistical significance was set at P < 0.05.
Results:
Both groups demonstrated normal proportions of the upper and lower lips; however, significant differences favoring ASO over NASO in terms of soft tissue changes were observed for several variables.
Conclusions
ASO is advised if the required adjustment for the upper and lower lips is –4.0 mm and –5.0 mm, respectively. For modifications of –2.0 mm, NASO is preferred. This study provides clinical guidelines on the choice between ASO and NASO based on the required lip movement measurements.
3.A comparison of soft tissue outcomes in skeletal Class II malocclusion: Anterior segmental osteotomy vs. non-surgical orthodontic treatment
Hyunhee CHOO ; Young Ho KIM ; Pureum HONG ; Young-Jin CHOI ; Reuben KIM ; Hwa Sung CHAE
The Korean Journal of Orthodontics 2025;55(3):224-233
Objective:
Temporary anchorage devices (TADs) have considerably reduced the need for anterior segmental osteotomy (ASO) in patients with Class I malocclusion. Most previous studies have been published before the widespread use of TADs, thus warranting new guidelines for determining the optimal approach for surgery and orthodontic treatment. This study aimed to establish guidelines on the choice between ASO and non-ASO (NASO) based on soft tissue considerations.
Methods:
Sixty-seven patients diagnosed with skeletal Class II malocclusion were divided into the ASO (n = 31) and NASO (n = 36) groups. Cephalometric analyses were used to compare the initial and final records to assess the effect of treatment on soft tissues. The interlabial gap, upper lip anterior to the E-line, lower lip anterior to the E-line, H-angle, upper lip to the nasion-perpendicular line, and nasolabial angle were evaluated. In particular, a proportional difference indicator between the upper and lower lips relative to the pogonion angle between the facial plane and CK line was presented, followed by statistics analyses. Statistical significance was set at P < 0.05.
Results:
Both groups demonstrated normal proportions of the upper and lower lips; however, significant differences favoring ASO over NASO in terms of soft tissue changes were observed for several variables.
Conclusions
ASO is advised if the required adjustment for the upper and lower lips is –4.0 mm and –5.0 mm, respectively. For modifications of –2.0 mm, NASO is preferred. This study provides clinical guidelines on the choice between ASO and NASO based on the required lip movement measurements.
4.A comparison of soft tissue outcomes in skeletal Class II malocclusion: Anterior segmental osteotomy vs. non-surgical orthodontic treatment
Hyunhee CHOO ; Young Ho KIM ; Pureum HONG ; Young-Jin CHOI ; Reuben KIM ; Hwa Sung CHAE
The Korean Journal of Orthodontics 2025;55(3):224-233
Objective:
Temporary anchorage devices (TADs) have considerably reduced the need for anterior segmental osteotomy (ASO) in patients with Class I malocclusion. Most previous studies have been published before the widespread use of TADs, thus warranting new guidelines for determining the optimal approach for surgery and orthodontic treatment. This study aimed to establish guidelines on the choice between ASO and non-ASO (NASO) based on soft tissue considerations.
Methods:
Sixty-seven patients diagnosed with skeletal Class II malocclusion were divided into the ASO (n = 31) and NASO (n = 36) groups. Cephalometric analyses were used to compare the initial and final records to assess the effect of treatment on soft tissues. The interlabial gap, upper lip anterior to the E-line, lower lip anterior to the E-line, H-angle, upper lip to the nasion-perpendicular line, and nasolabial angle were evaluated. In particular, a proportional difference indicator between the upper and lower lips relative to the pogonion angle between the facial plane and CK line was presented, followed by statistics analyses. Statistical significance was set at P < 0.05.
Results:
Both groups demonstrated normal proportions of the upper and lower lips; however, significant differences favoring ASO over NASO in terms of soft tissue changes were observed for several variables.
Conclusions
ASO is advised if the required adjustment for the upper and lower lips is –4.0 mm and –5.0 mm, respectively. For modifications of –2.0 mm, NASO is preferred. This study provides clinical guidelines on the choice between ASO and NASO based on the required lip movement measurements.
5.A comparison of soft tissue outcomes in skeletal Class II malocclusion: Anterior segmental osteotomy vs. non-surgical orthodontic treatment
Hyunhee CHOO ; Young Ho KIM ; Pureum HONG ; Young-Jin CHOI ; Reuben KIM ; Hwa Sung CHAE
The Korean Journal of Orthodontics 2025;55(3):224-233
Objective:
Temporary anchorage devices (TADs) have considerably reduced the need for anterior segmental osteotomy (ASO) in patients with Class I malocclusion. Most previous studies have been published before the widespread use of TADs, thus warranting new guidelines for determining the optimal approach for surgery and orthodontic treatment. This study aimed to establish guidelines on the choice between ASO and non-ASO (NASO) based on soft tissue considerations.
Methods:
Sixty-seven patients diagnosed with skeletal Class II malocclusion were divided into the ASO (n = 31) and NASO (n = 36) groups. Cephalometric analyses were used to compare the initial and final records to assess the effect of treatment on soft tissues. The interlabial gap, upper lip anterior to the E-line, lower lip anterior to the E-line, H-angle, upper lip to the nasion-perpendicular line, and nasolabial angle were evaluated. In particular, a proportional difference indicator between the upper and lower lips relative to the pogonion angle between the facial plane and CK line was presented, followed by statistics analyses. Statistical significance was set at P < 0.05.
Results:
Both groups demonstrated normal proportions of the upper and lower lips; however, significant differences favoring ASO over NASO in terms of soft tissue changes were observed for several variables.
Conclusions
ASO is advised if the required adjustment for the upper and lower lips is –4.0 mm and –5.0 mm, respectively. For modifications of –2.0 mm, NASO is preferred. This study provides clinical guidelines on the choice between ASO and NASO based on the required lip movement measurements.
6.2020 Korean Society of Myocardial Infarction Expert Consensus Document on Pharmacotherapy for Acute Myocardial Infarction
Hyun Kuk KIM ; Youngkeun AHN ; Kiyuk CHANG ; Young-Hoon JEONG ; Joo-Yong HAHN ; Eun Ho CHOO ; Min Chul KIM ; Hyo-Soo KIM ; Weon KIM ; Myeong-Chan CHO ; Yangsoo JANG ; Chong Jin KIM ; Myung Ho JEONG ; Shung Chull CHAE ;
Korean Circulation Journal 2020;50(10):845-866
Clinical practice guidelines published by the European Society of Cardiology and the American College of Cardiology/American Heart Association summarize the available evidence and provide recommendations for health professionals to enable appropriate clinical decisions and improve clinical outcomes for patients with acute myocardial infarction (AMI). However, most current guidelines are based on studies in non-Asian populations in the pre-percutaneous coronary intervention (PCI) era. The Korea Acute Myocardial Infarction Registry is the first nationwide registry to document many aspects of AMI from baseline characteristics to treatment strategies. There are well-organized ongoing and published randomized control trials especially for antiplatelet therapy among Korean patients with AMI. Here, members of the Task Force of the Korean Society of Myocardial Infarction review recent published studies during the current PCI era, and have summarized the expert consensus for the pharmacotherapy of AMI.
7.The Therapeutic Effect of Human Embryonic Stem Cell-Derived Multipotent Mesenchymal Stem Cells on Chemical-Induced Cystitis in Rats
Sang Wook LEE ; Chae Min RYU ; Jung Hyun SHIN ; Daeheon CHOI ; Aram KIM ; Hwan Yeul YU ; Ju Young HAN ; Hye Yeon LEE ; Jisun LIM ; Yong Hwan KIM ; Jinbeom HEO ; Seungun LEE ; Hyein JU ; Sujin KIM ; Ki Sung HONG ; Ji Yeon HAN ; Miho SONG ; Hyung Min CHUNG ; Jun Ki KIM ; Dong Myung SHIN ; Myung Soo CHOO
International Neurourology Journal 2018;22(Suppl 1):S34-S45
PURPOSE: To evaluate the therapeutic effect of human embryonic stem cell (hESC)-derived multipotent mesenchymal stem cells (M-MSCs) on ketamine-induced cystitis (KC) in rats. METHODS: To induce KC, 10-week-old female rats were injected with 25-mg/kg ketamine hydrochloride twice weekly for 12 weeks. In the sham group, phosphate buffered saline (PBS) was injected instead of ketamine. One week after the final injection of ketamine, the indicated doses (0.25, 0.5, and 1×106 cells) of M-MSCs (KC+M-MSC group) or PBS vehicle (KC group) were directly injected into the bladder wall. One week after M-MSC injection, the therapeutic outcomes were evaluated via cystometry, histological analyses, and measurement of gene expression. Next, we compared the efficacy of M-MSCs at a low dose (1×105 cells) to that of an identical dose of adult bone marrow (BM)-derived MSCs. RESULTS: Rats in the KC group exhibited increased voiding frequency and reduced bladder capacity compared to rats of the sham group. However, these parameters recovered after transplantation of M-MSCs at all doses tested. KC bladders exhibited markedly increased mast cell infiltration, apoptosis, and tissue fibrosis. Administration of M-MSCs significantly reversed these characteristic histological alterations. Gene expression analyses indicated that several genes associated with tissue fibrosis were markedly upregulated in KC bladders. However the expression of these genes was significantly suppressed by the administration of M-MSCs. Importantly, M-MSCs ameliorated bladder deterioration in KC rats after injection of a low dose (1×105) of cells, at which point BM-derived MSCs did not substantially improve bladder function. CONCLUSIONS: This study demonstrates for the first time the therapeutic efficacy of hESC-derived M-MSCs on KC in rats. M-MSCs restored bladder function more effectively than did BM-derived MSCs, protecting against abnormal changes including mast cell infiltration, apoptosis and fibrotic damage.
Adult
;
Animals
;
Apoptosis
;
Bone Marrow
;
Cystitis
;
Female
;
Fibrosis
;
Gene Expression
;
Human Embryonic Stem Cells
;
Humans
;
Ketamine
;
Mast Cells
;
Mesenchymal Stromal Cells
;
Multipotent Stem Cells
;
Pelvic Pain
;
Rats
;
Urinary Bladder
8.In vitro maturation: Clinical applications.
Kyung Sil LIM ; Soo Jin CHAE ; Chang Woo CHOO ; Yeon Hee KU ; Hye Jun LEE ; Chang Young HUR ; Jin Ho LIM ; Won Don LEE
Clinical and Experimental Reproductive Medicine 2013;40(4):143-147
Oocyte in vitro maturation (IVM) is an assisted reproductive technology in which oocytes are retrieved from the antral follicles of unstimulated or minimally stimulated ovaries. IVM of human oocytes has emerged as a promising procedure. This new technology has advantages over controlled ovarian stimulation such as reduction of costs, simplicity, and elimination of ovarian hyperstimulation syndrome. By elimination or reduction of gonadotropin stimulation, IVM offers eligible infertile couples a safe and convenient form of treatment, and IVM outcomes are currently comparable in safety and efficacy to those of conventional in vitro fertilization. IVM has been applied mainly in patients with polycystic ovary syndrome or ultrasound-only polycystic ovaries, but with time, the indications for IVM have expanded to other uncommon situations such as fertility preservation, as well as to normal responders. In this review, the current clinical experiences with IVM will be described.
Family Characteristics
;
Female
;
Fertility Preservation
;
Fertilization in Vitro
;
Gonadotropins
;
Humans
;
In Vitro Oocyte Maturation Techniques
;
Infertility
;
Oocytes
;
Ovarian Hyperstimulation Syndrome
;
Ovary
;
Ovulation Induction
;
Polycystic Ovary Syndrome
;
Reproductive Techniques, Assisted
9.Measurements and Comparative Considerations of Velocities of Primary Bloodstain Spatters using a High Speed Camera.
Young Il SEO ; Byung Sun MOON ; Young Jin CHO ; Woo Jeong JEON ; Seong Jin KIM ; Bu Nam SON ; Ki Jeong KIM ; Young Gyu KIM ; Chang Woo CHOO ; Seung Hoon LEE ; Woo Han HONG ; Chae Won LIM ; Jong Hoon LEE ; Kyung Jin RYU ; Je Seol YU ; Yong Seok CHOI ; Nam Kyu PARK
Korean Journal of Legal Medicine 2011;35(1):27-31
Bloodstain pattern analysis is a forensic discipline that reconstruct events of a crime scene by analyzing sizes, shapes, distributions, positions of bloodstains. Bloodstain pattern can be classified into the low velocity, medium velocity, and high velocity system. Velocities in this system represent the velocity of the wounding agent (the force applied) and not to the velocity of the blood in flight. Thus there is no reference system about the velocity of the blood in flight in the existing bloodstain classification system. Applying bloodstain pattern analysis to the real crime case, we needed to have the reference system of velocities of impact spatter, cast-off spatter, and expectorate spatter. Therefore we measured the velocities of these spatters using high speed camera and we analyzed the results. In this experiments the average velocity of impact spatter that generated by swinging a hammer with all experimenter's strength at the pool of blood is about 4.7 times faster than that of swing cast-off spatter that generated by swinging a red-wat hammer with all experimenter's strength, and about 3.9 times faster than that of expectorate spatter that generated by emitting blood from the mouth with all experimenter's strength. The velocities of cast-off spatter and expectorate spatter, however, showed similar distributions. Our experiments that measure the velocities of droplets of blood spatters in flight under the specific conditions that generated at fastest speed can give some reference to the classification system of velocities of bloodstains which is not distinct up to now, as well as some real bloodshed crime cases.
Crime
;
Enzyme Multiplied Immunoassay Technique
;
Mouth
10.Nonlinear Analysis of Electroencephalogram in Schizophrenia Patients with Persistent Auditory Hallucination.
Seung Hwan LEE ; Jung Suk CHOO ; Wu Young IM ; Jeong Ho CHAE
Psychiatry Investigation 2008;5(2):115-120
OBJECTIVE: The recent nonlinear analyses of electroencephalogram (EEG) data have shown that the correlation dimension (D2) reflects the degree of integration of information processing in the brain. There is now considerable evidence that auditory hallucination (AH) reflects dysfunctional gamma and beta frequency oscillations. Gamma oscillations are thought to reflect internally driven representations of objects, and the occurrence of subsequent beta oscillations can reflect the modification of the neuronal circuitry used to encode the sensory perception. The purpose of this study was to test whether AH in schizophrenia patients is reflected in abnormalities in D2 in their EEG, especially in the gamma and beta frequency bands. METHODS: Twenty-five schizophrenia patients with a history of treatment-refractory AH over at least the past 2 years, and 23 schizophrenia patients with no AH (N-AH) within the past 2 years were recruited for the study. Artifact-free 30-s EEG epochs during rest were examined for D2. RESULTS: The AH patients showed significantly increased gamma frequency D2 in Fp2 and decreased beta frequency D2 in the P3 region compared with the N-AH patients. These results imply that gamma frequency D2 in the right prefrontal cortex is more chaotic and that beta frequency D2 in the left parietal cortex is more coherent (less chaotic) in AH patients than in N-AH patients. CONCLUSION: Our study supports the previous evidence indicating that gamma and beta oscillations are pivotal to AH, and also shows the distinctive dimensional complexity between the right prefrontal and left parietal cortexes as the underlying biological correlates of AH in schizophrenia patients.
Automatic Data Processing
;
Brain
;
Electroencephalography*
;
Hallucinations*
;
Humans
;
Neurons
;
Prefrontal Cortex
;
Rabeprazole
;
Schizophrenia*

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