2.Effect of Er:YAG lasing on the dentin bonding strength of two-step adhesives.
Byeong Choon SONG ; Young Gon CHO ; Myung Seon LEE
Journal of Korean Academy of Conservative Dentistry 2011;36(5):409-418
OBJECTIVES: The purpose of this study was to compare the microshear bond strength (microSBS) and bonding interfaces of two-step total-etching and self-etching adhesive systems to three etch types of dentin either the acid etched, laser etched or laser and acid etched. MATERIALS AND METHODS: The occlusal dentinal surfaces of thirty human molars were used. They were divided into six groups: group 1, 37% H3PO4 + Single Bond 2 (3M ESPE); group 2, Er:YAG laser (KEY Laser 3, KaVo) + Single Bond 2; group 3, Er:YAG laser + 37% H3PO4 + Single Bond 2; group 4, Clearfil SE Primer + Bond (Kuraray); group 5, Er:YAG laser + Clearfil SE Bond; group 6, Er:YAG laser + Clearfil SE Primer + Bond. The samples were subjected to microSBS testing 24 hr after bonding. Also scanning microscopic evaluations were made on the resin-dentin interfaces of six specimens. RESULTS: The microSBS of group 2 was significantly lower than that of groups 1 and 3 in Single Bond 2 (p < 0.05). There were significant differences among the uSBS of groups 4, 5, and 6 in Clearfil SE Bond (p < 0.05). Very short and slender resin tags were observed in groups 2 and 5. Long and slender resin tags and lateral branches of tags were observed in groups 3 and 6. CONCLUSIONS: Treatment of dentin surface using phosphoric acid or self-etching primer improved the adhesion of Er:YAG lased dentin.
Adhesives
;
Bisphenol A-Glycidyl Methacrylate
;
Dentin
;
Humans
;
Molar
;
Phosphoric Acids
;
Resin Cements
3.How to Revitalize the Abdominal Ultrasonography Education Program
Beom Kyung KIM ; Jae Myung CHA ; Do Seon SONG
The Korean Journal of Gastroenterology 2019;73(2):66-69
Abdominal ultrasound examinations are performed by many gastroenterologists in clinical practice, but abdominal ultrasound education has not been included in internal medicine resident or gastroenterology fellowship training courses. Abdominal ultrasound education was established as an essential part of the resident training program in 2017, and since then interest in ultrasound has increased. An educational accreditation system for trainers of ultrasonography in the internal medicine field was developed in 2018, but accredited ultrasound trainers and equipment and space for ultrasound education are lacking. This article describes how to revitalize ultrasound education program for resident and fellowship training.
Accreditation
;
Education
;
Fellowships and Scholarships
;
Gastroenterology
;
Internal Medicine
;
Ultrasonography
4.Understanding Selfobject and Narcissistic Personality Disorder Through the ‘007 Series’:Based on Self Psychology
Chan Hee LEE ; Nak-Young KIM ; Soo Hyun PAIK ; Myung Seon SONG
Psychoanalysis 2024;35(4):60-66
In this paper, we analyzed a fictional character from the movie series (James Bond from the 007 series) based on Kohut’s self psychology to understand the formation and evolution of narcissistic personality traits. James Bond experienced sudden parental loss due to a tragic accident. He endured childhood bullying, leading to a deficiency in mirroring selfobject experiences, idealized selfobject experiences, and twinship selfobject experiences. These deficits culminated in his developing narcissistic personality disorder. However, James Bond was able to undergo a process of transmuting internalization through new selfobjects such as M and Madeleine. This enabled him to reactivate disrupted developmental processes and ultimately reach a state of healthy self.
5.Study on Physician's Perceptions and Attitudes on Organ Donation in Brain Dead Donors.
Hea Seon HA ; Jeong Ja HONG ; Song Cheol KIM ; Sung Gyu LEE ; Myung Geun SONG ; Duck Jong HAN
The Journal of the Korean Society for Transplantation 2001;15(1):51-57
PURPOSE: The demand for suitable organs in the world greatly outweighs the supply of transplantable organs. Perceptions and attitudes of the attending physician to brain death are pivotal for the organ donation process in brain dead donors. The purpose of this study is to evaluate the perceptions and attitudes of the attending physician on brain death and organ donation in order to promote the organ donation from brain dead donors in Korea. METHODS: Questionnaires were collected from 194 (17.9%) among 1,018 physicians and were analyzed by descriptive statistics. RESULTS: 97.5% (189/194) of respondents have positive attitudes toward organ donation. Although 97.9% (190/194) have experienced donor management, the referral rate was no more than half (96/194, 49.5%). The main barriers against organ donation were lack of knowledge on organ donation and transplantation (60/129, 46.5%), cultural background (27/120, 20.9%) and complexity in the organ donation process (12/129, 9.3%). CONCLUSION: Promotion of organ procurement organization and well trained-education programs are crucial to help attending physicians to understand the organ donation process, and eventually to increase the rate of organ donations in brain dead donors.
Brain Death*
;
Brain*
;
Humans
;
Korea
;
Surveys and Questionnaires
;
Referral and Consultation
;
Surveys and Questionnaires
;
Tissue and Organ Procurement*
;
Tissue Donors*
;
Transplantation
6.Clinical application of Edwards' antepartum risk scoring system on primary care service.
Yoon Mi WON ; Heon Joo BOO ; Sang Uk SONG ; Seon Myung OK ; Whan Seok CHOI ; Ho Cheol SHIN ; Eun Sook PARK
Journal of the Korean Academy of Family Medicine 1992;13(6):509-515
No abstract available.
Primary Health Care*
7.Obesity and Psychopathology of Inpatients with Schizophrenia.
Myung Seon SONG ; Woong HAHM ; Seong Yong PARK ; Kye Hyen HONG ; In Ho PAIK
Journal of Korean Neuropsychiatric Association 2015;54(2):172-180
OBJECTIVES: The aims of this study were to examine the relationship between obesity and psychopathology of inpatients with schizophrenia. METHODS: Eighty four inpatients with schizophrenia and 81 control subjects were recruited. Height and weight were measured for calculation of body mass index (BMI). Symptom severity scales [Positive and Negative Syndrome Scale (PANSS), Brief Psychiatric Rating Scale] and Global Assessment of Functioning Scale (GAF) were conducted in all patients. Comorbid medical conditions, years of education, smoking status, age of onset, duration of illness, and medication history were collected. RESULTS: Patients with schizophrenia had significantly higher BMI and ratio of obesity than control subjects. Among patients, obese patients scored lower on symptom severity scales and better on functional assessment than not obese patients. Multiple regression analysis revealed an association of late onset and being obese with lower PANSS total score and better GAF score in patients. Late onset and being female were inversely related with negative symptom score. The type and dose of antipsychotics showed no association with obesity. CONCLUSION: The results of this study indicate that patients with schizophrenia are likely to be more obese. Some characteristics of patients with less severe psychopathology, such as late onset, being obese, were coincident with the result of previous studies. In addition, the result showing that the heavier the weight of patients, the lower severity of symptoms was repeatedly reported in previous studies. The type and dose of antipsychotics were not associated with obesity. These results prompt further investigation of the relationship among schizophrenia, antipsychotics, and weight gain.
Age of Onset
;
Antipsychotic Agents
;
Body Mass Index
;
Education
;
Female
;
Humans
;
Inpatients*
;
Obesity*
;
Psychopathology*
;
Schizophrenia*
;
Smoke
;
Smoking
;
Weight Gain
;
Weights and Measures
8.Balloon Dilation Angioplasty of Aortic Coarctation in Adult.
Yun Kyung CHO ; Yong Gyu LEE ; Kwang Seon SONG ; Kyong Gu YOH ; Jun Myung KIM ; Jung Han YOON ; Keum Soo PARK ; Kyung Hoon CHOE
Korean Circulation Journal 1994;24(4):681-686
A 21-year-old woman found to be hypertensive was referred for hypertension. On examination, blood pressure was 170/110mmHg in the right arm, 160/100mmHg in left arm,and 120/70mmHg in legs. A grade 2/6 systolic ejection murmur was present at the left upper sternal border, and a chest x-ray revealed a rib notching on the inferior margin of 4th rib. Two-dimensional echocardiogram showed the coarctation of aorta beyound the origin of the left subclavian artery. Biplane TEE demonstrated a discrete narrowing of the descending aorta at the site of coarctation. The blood pressure was 169/86mmHg in ascending aorta and 118/84mmHg in descending aorta. Aortogram showed a localized coarcted aortic segment of 7mm in diameter and 5mm long just distal to the left subclavian artery. Balloon coarctation angioplasty was performed with 7F 30x15mm pediatric balloon dilatation catheter. Balloon position was confirmed on fluoroscopy by the hourglass appearance of the balloon inflation and thereafter, the balloon was inflated until the waist of the balloon disappeared. After procedure, a pull back pressure tracing across the coarctation of aorta revealed no pressure gradient between ascending and descending aorta with 141/90mmHg. Aortogram showed an increase in diameter of the coarctation of aorta to 18mm with aneurysmal formation. 3 months later, follow up aortogram showed no significant change in diameter of coarctation of aorts or aneurysmal formation. Nonsurgical balloon coarctation angioplasty appears to be an alternative therapy for the coarctation of aorta in adults.
Adult*
;
Aneurysm
;
Angioplasty*
;
Angioplasty, Balloon
;
Aorta
;
Aorta, Thoracic
;
Aortic Coarctation*
;
Arm
;
Blood Pressure
;
Catheters
;
Dilatation
;
Female
;
Fluoroscopy
;
Follow-Up Studies
;
Humans
;
Hypertension
;
Inflation, Economic
;
Leg
;
Ribs
;
Subclavian Artery
;
Systolic Murmurs
;
Thorax
;
Young Adult
9.A Case of Collagenous Colitis.
Jae Seon KIM ; Chul Weon CHOI ; Gwan Gyu SONG ; Jae Myung YU ; Young Tae BAK ; Jin Ho KIM ; Jong Guk KIM ; Chang Hong LEE ; Nam Hee WON
Korean Journal of Gastrointestinal Endoscopy 1993;13(2):405-409
Collagenous colitis is an uncommon condition charaeterized clinically by diarrhea and weight loss and histologically by thickening of the subepithelial collagen band with chromic inflammation. Laboratory tests of blood, urine and stool, and colonscopic findings are usually normal. The etiology of collagenous colitis is unknown. We report a case of collagenous colitis improved after treatment with sulfasalazine with review of literatures.
Colitis, Collagenous*
;
Collagen*
;
Diarrhea
;
Inflammation
;
Sulfasalazine
;
Weight Loss
10.Antinociceptive effect of intrathecal sec-O-glucosylhamaudol on the formalin-induced pain in rats.
Sang Hun KIM ; Hwa Song JONG ; Myung Ha YOON ; Seon Hee OH ; Ki Tae JUNG
The Korean Journal of Pain 2017;30(2):98-103
BACKGROUND: The root of Peucedanum japonicum Thunb., a perennial herb found in Japan, the Philippines, China, and Korea, is used as an analgesic. In a previous study, sec-O-glucosylhamaudol (SOG) showed an analgesic effect. This study was performed to examine the antinociceptive effect of intrathecal SOG in the formalin test. METHODS: Male Sprague-Dawley rats were implanted with an intrathecal catheter. Rats were randomly treated with a vehicle and SOG (10 µg, 30 µg, 60 µg, and 100 µg) before formalin injection. Five percent formalin was injected into the hind-paw, and a biphasic reaction followed, consisting of flinching and licking behaviors (phase 1, 0–10 min; phase 2, 10–60 min). Naloxone was injected 10 min before administration of SOG 100 µg to evaluate the involvement of SOG with an opioid receptor. Dose-responsiveness and ED50 values were calculated. RESULTS: Intrathecal SOG showed a significant reduction of the flinching responses at both phases in a dose-dependent manner. Significant effects were showed from the dose of 30 µg and maximum effects were achieved at a dose of 100 µg in both phases. The ED50 value (95% confidence intervals) of intrathecal SOG was 30.3 (25.8–35.5) µg during phase 1, and 48.0 (41.4–55.7) during phase 2. The antinociceptive effects of SOG (100 µg) were significantly reverted at both phases of the formalin test by naloxone. CONCLUSIONS: These results demonstrate that intrathecal SOG has a very strong antinociceptive effect in the formalin test and it seems the effect is related to an opioid receptor.
Analgesia
;
Animals
;
Catheters
;
China
;
Formaldehyde
;
Humans
;
Japan
;
Korea
;
Male
;
Naloxone
;
Nociception
;
Pain Measurement
;
Philippines
;
Rats*
;
Rats, Sprague-Dawley
;
Receptors, Opioid