• 대한치과의사협회지
• /
• 제55권5호
• /
• pp.328-338
• /
• 2017

Introduction: The aim of the current study was to describe the prevalence and treatment of mandibular first molar eruption disturbances. Methods: A total of 38 mandibular first molars(M1mn) from 36 patients(17 males and 19 females; aged 9 years 2 months?35 years 10 months) were identified from the 13,391 patients that received orthodontic treatment from 1983?2012. The subjects were classified into 3 categories based on panoramic radiographic examination: impaction due to ectopic position of the tooth germ relative to the contra-side same tooth(Group 1), impaction due to obstruction of the eruption path with cyst or calcium mass (Group 2), and primary and secondary retention due to defects in the follicle or periodontal ligament(PDL; Group 3). The treatment outcomes were evaluated into four categories: no treatment(A), orthodontic traction(B), autotransplantation(C), and extraction due to orthodontic traction failure(D). Results: The prevalence rate of M1mn eruption disturbances in this sample was 0.27%. In Groups 1 and 2, most of the impacted M1mn were erupted successfully by orthodontic traction. In Group 3, most of the retained M1mn were failed to erupt and recommended for extraction. Conclusions: Treatment prognosis was favorable on Group 1 & 2 than Group 3. After removing an element of the cause in case of Group 1 & 2, orthodontic traction or periodic observation will be recommended.

• Radiation Oncology Journal
• /
• 제3권1호
• /
• pp.19-28
• /
• 1985

Twenty-four cases of pituitary adenoma, 13 males and 11 females with the age ranging from 11 to 65 years, received radiation therapy(RT) on the pituitary area with 6MV linear accelerator during past 25 months at the Division of Radiation Therapy, Kangnam St. Mary's Hospital, Catholic Medical College. Of 24 cases of RT, 20 were postoperative and 4 primary. To evaluate the effect of RT, we analysed the alteration of the endocrinologic tests, neurologic abnormalities, major clinical symptoms, endocrinologic changes and improvement in visual problems after RT. The results were as follows ; 1. Major clinical symptoms were headache, visual defects, diabetes insipidus, hypogonadisms and general weakness in decreasing order of frequency. 2. All but the one with Nelson's syndrome showed abnormal neuroradiologic changes in the sella turcica with an invasive tumor mass around supra· and para-sellar area. 3. Endocrinological classifications of the patient were 11 prolactinoma, 4 growth hormone -secreting tumors, 3 ACTH-secreting tumors consisting of one Cushing's disease and two Nelson's syndrome, and 6 nonfunctioning tumors. 4. Eleven of 14 patients, visual problems were improved after treatment but remaining 3 were unchanged. 5. Seven of 11 prolactinomas returned to normal hormonal level after postoperative and primary RT and 3 patients are being treated with bromocriptine (BMCP) but one lost case. 6. Two of 4 growth hormone·secreting tumor returned to normal level after RT but the remaining 2 are being treated with BMCP, as well.

• Asian Pacific Journal of Cancer Prevention
• /
• 제17권6호
• /
• pp.2833-2839
• /
• 2016

Background: Tobacco use among youth is a major public health problem. Youth outside of formal school settings are often understudied but may be at increased risk. Materials and Methods: A descriptive cross-sectional study was carried out among 326 young people aged 15-24 years in four randomly selected motor parks in Lagos state. Interviewer-administered questionnaires were used to collect data. Results: The mean age of the respondents was $21.0{\pm}2.3yrs$. Many 252 (77.3%) dropped out before the end of the third year of secondary schooling. The majority were aware that active (78.2%), and passive smoking (77.3%) are harmful to health. Nearly two-thirds of the respondents disagreed with an outright ban of cigarettes (63.2%) and restriction of cigarette sales to persons below 18 years (67.9%) while 254 (66.8%) supported a ban on tobacco smoking in enclosed public places. One hundred and fifty (46.0%) respondents had experimented with smoking of which 106 (32.5%) had progressed to become current smokers. Half of the current smokers, 54 (50.9%), felt the need for a cigarette first thing in the morning. A multivariate analysis for smoking initiation, showed that for every increasing year of age, respondents were 1.08 times more likely to have initiated cigarette smoking; males and respondents who lived alone or with peers were 2.34 times and 1.77 times more likely to have initiated smoking respectively; those who consume alcohol and marijuana were 7.27 and 1.89 times respectively more likely to have initiated smoking while those who consumed alcohol were 6.17 times more likely to be current smokers.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제49권1호
• /
• pp.13-20
• /
• 2023

Objectives: Ultra-wide implants may be used as a replacement if existing implants fail. This study was conducted to evaluate the factors influencing the prognosis and failure of ultra-wide implants. Patients and Methods: This study evaluated whether sex, age, site, diameter, length, additional surgery, implant stability (primary and secondary), and reason for ultra-wide implant placement affect the 5-year survival and success rates and marginal bone loss (MBL) of ultra-wide implants. Seventy-eight ultra-wide implants that were placed in 71 patients (39 males and 32 females) from 2008 to 2010 were studied. One-way ANOVA analysis was conducted to evaluate the statistical significance of MBL according to the patient's sex, implant site, and diameter. Independent sample t-tests were used to determine the statistical significance of MBL analysis which was used to determine the significance of the 5-year success and survival rates related to the variables. One-way ANOVA was conducted to evaluate the statistical significance of sex, implantation site, diameter, and MBL. Independent sample t-tests were used to evaluate the correlation between implantability and MBL for implantation reasons, while additional surgery, length, and Kaplan-Meier analysis were used to evaluate 5-year survival and success rates. Results: The mean age of patients was 54.2 years with a survival rate of 92.3% and a success rate of 83.3% over a mean 97.8-month period of observation. MBL averaged 0.2 mm after one year of prosthetic function loading and 0.54 mm at the time of final observation. Success rates correlated with primary stability (P=0.045), survival rates correlated with secondary stability (P=0.036), and MBL did not correlate with any variables. Conclusion: Ultra-wide implants can be used to achieve secure initial fixation in the maxillary and mandibular molar regions with poor bone quality or for alternative purposes in cases of previous implant failure.

• 한국식생활문화학회지
• /
• 제24권6호
• /
• pp.762-769
• /
• 2009

In this investigation, 480 high school students attending school in Seoul, Incheon were surveyed for their knowledge of seaweed and their preference of seaweed products provided during school meal service. Female students answered that they preferred seaweed more than male students. When asked to explain their preference for seaweed, most students who preferred seaweed responded 'it is tasty' (82.9%), while those that did not like seaweed responded 'I don't like the texture when chewing it and it is not tasty' (47.8%). Most students reported that they usually eat 'laver', and the number of times that they at seaweed was '3-4 times a week'. The primary place in which they ate seaweed and the place where they feel it had the best taste was a 'house'. The primary source of information regarding seaweed was mass media including TV, newspapers, magazines and the internet (48.8%). With regard to seaweed in school meals, which is offered twice a week, most students reported, 'I eat seaweed and leave it to some extent.' They perceived 'laver' to be most often provided in school meals, and 57.7% reported that their favorite seaweed meal was 'laver'. When asked why they dislike seaweed in school meals, the most common responses were 'I didn't like seaweed the first time I tried it' (27%) and 'Its taste is different from what I eat at home' (24.6%). The most common request regarding seaweed provided in school lunches was for the taste to be improved (48.2%). Evaluation of the preference for seaweed menus in school meals revealed that both males and females had higher preferences of more than 4 points for 'fried laver' and 'broiled laver'.

• Korean Journal of Radiology
• /
• 제21권11호
• /
• pp.1239-1247
• /
• 2020

Objective: To report the mid-term results of a single-center randomized controlled trial comparing drug-coated balloon angioplasty (DBA) and plain balloon angioplasty (PBA) for the treatment of dysfunctional radiocephalic arteriovenous fistulas (RCAVFs). Materials and Methods: In this prospective study, 39 patients (mean age, 62.2 years; 21 males, 18 females) with RCAVFs failing due to juxta-anastomotic stenosis were randomly assigned to undergo either both DBA and PBA (n = 20, DBA group) or PBA alone (n = 19, PBA group) between June 2016 and June 2018. Primary endpoints were technical and clinical success and target lesion primary patency (TLPP); secondary outcomes were target lesion secondary patency (TLSP) and complication rates. Statistical analysis was performed using the Kaplan-Meier product limit estimator. Results: Demographic data and baseline clinical characteristics were comparable between the groups. Technical and clinical success rates were 100% in both groups. There was no significant difference between the groups in the mean duration of TLPP (DBA group: 26.7 ± 3.6 months; PBA group: 27.0 ± 3.8 months; p = 0.902) and TLSP (DBA group: 37.3 ± 2.6 months; PBA group: 40.4 ± 1.5 months; p = 0.585). No procedural or post-procedural complications were identified. Conclusion: Paclitaxel-coated balloon use did not significantly improve TLPP or TLSP in the treatment of juxta-anastomotic stenosis of dysfunctional RCAVFs.

• Advances in pediatric surgery
• /
• 제4권2호
• /
• pp.117-124
• /
• 1998

The embryological and anatomical features of urachal anomalies have been well defined. Because of the variable clinical presentation, uniform guideline for evaluation and treatment are lacking. Although urachal remnants are rarely observed clinically, they often give rise to a number of problems such as infection and late malignant changes. Therefore, a total assessment of the disease with a particular focus on embryology, anatomy, clinical symptoms, as well as the most advisable management, is necessary. Twenty six patients with urachal remnants were treated at the Department of Pediatric Surgery from August 1980 to June 1998. Of these 26, 9 were classified as patent urachus 11 as urachal sinus, 4 as urachal cyst, 1 as urachal diverticulum and 1 as an alternating sinus. The group consisted of 11 males and 15 females. The age distribution was 20 neonates, 3 infants, 2 preschoolers and 1 adult. Infection was the most frequent complication and Staph. aureus was the predominant causative microorganism. Fistulogram was performed in 4 cases and ultrasound examination disclosed cysts or sinus in 7 cases. Excision was performed in 24 patients and incision and draniage in 2 cases as a primary treatment. There was no postopreative complication or recurrence.

• 노동경제논집
• /
• 제38권1호
• /
• pp.31-65
• /
• 2015

이 논문은 장년임금근로자들이 기존 일자리를 그만두는 이유와 퇴직위험의 결정요인을 분석하였다. 주된 결과는 다음과 같다. 첫째, 공식적인 정년으로 일자리를 떠나는 장년근로자는 비교적 소수이며 대부분이 대기업 남성근로자들이다. 둘째, 일정수준을 넘는 고임금은 장년근로자의 퇴직위험을 높이며, 이 효과는 주로 대기업 남성근로자에게서 발견된다. 셋째, 관행적인 강제 퇴직은 장년여성근로자의 퇴직을 초래하는 중요한 요인이다. 넷째, 건강의 악화는 장년근로자 퇴직의 가장 중요한 이유로 조사되었으며 이러한 경향은 특히 여성근로자와 소규모사업체 근로자에게 강하게 나타난다. 끝으로, 적정한 근로시간과 높은 근로유연성은 장년근로자의 퇴직위험을 낮추는 요인이다. 논문은 분석결과가 장년고용정책에 대해 갖는 함의를 논의하였다.

• 가정과삶의질연구
• /
• 제27권4호
• /
• pp.161-175
• /
• 2009

This study examines how parenting behavior and abuse experience in childhood and temperaments affect problem behavior by sex as it relates to undergraduates. The subject of this research is 220 undergraduates (males, 94; females, 126) attending universities located in Gyeonggi-do. Data were collected through the use of questionnaires during class. According to the results, when parenting behavior experienced in childhood is negative, abuse experience is more frequent, the emotional characteristics of the subject's temperaments are negative, activity is higher, sociability is lower, and problem behaviors such as social withdrawal, hyperactivity, aggressiveness, and obsession are more prevalent. Moreover, for male students, the chief factors explaining their problem behavior are their father's lack of supervision, physical violence, their mother's excessive interference and irrational parenting behavior, and the temperaments of excessive worrying, high activity, and low sociability. In the cases of female students, the primary variables affecting their problem behavior are negative emotional temperaments, low sociability temperaments, their father's low affection, excessive interference, too rational explanation, and their mother's inconsistent parenting behavior.

• Journal of Ecology and Environment
• /
• 제32권3호
• /
• pp.145-148
• /
• 2009

To understand whether experience of cold season in reproductive behaviors in the adults of Amaurobius ferox, the paired adults of a female and a male were exposed under 'cold-treated environment' and 'not cold-treated environment', respectively. I investigated effects of the cold treatment on the brood production of A. ferox. In not cold treatment in which male-female pairs were formed in October at a temperature of $20^{\circ}C$ (${\pm}2^{\circ}C$) and continuously kept under not cold-treated environment, only 3 of 50 pairs successfully reproduced (reproduction was defined as the emergence of spiderlings). In cold treatment where individuals were kept in cold conditions for 3 months prior to pair formation, 57 out of 60 couples succeeded in reproducing. Females which did not experience the low temperature displayed strong aggressiveness toward males. This behavioral inhibition might the primary barrier to copulation of A. ferox that decrease following a period of low temperature. The reproductive inhibition might help the females to allocate the maximum amount of energy in a given environment to reaching the adult stage and to delay reproduction in unfavorable wintering conditions.