No abstract available.
Humans ; Infant* ; Infant, Very Low Birth Weight*

PURPOSE: The objective of this study was to investigate the relations among psycho-social factors regarding child neglect and abuse using the data from the 2013 Korea National Survey on Children and Youth. METHODS: Data from a sample of 1,062 primary caregivers with young children were analyzed with the SPSS and AMOS programs to examine the interrelationships among depression, parenting stress, marital satisfaction, parent-child attachment, and child neglect or maltreatment. RESULTS: Depression, stress, and attachment had a direct influence on child neglect and abuse. Satisfaction with marital relationship, parenting stress, and attachment were found to play mediating roles in accounting for child neglect and abuse, explaining 12% of the variance. The results of multi group path analysis showed that some coefficients were different according to the age group of the children. For caregivers with infants, parenting stress did not predict either attachment or child maltreatment, whereas for caregivers with toddlers, depression did not have a significant effect on attachment. CONCLUSION: In order to prevent child maltreatment, efforts should be made to develop community-based psycho-social support interventions focused on marital relationship as well as parent-child dyads and to provide practical child care support.
Adolescent ; Caregivers* ; Child ; Child Abuse* ; Child Care ; Child* ; Depression ; Humans ; Infant ; Korea ; Marriage ; Negotiating ; Parent-Child Relations ; Parenting ; Parents

PURPOSE: The aim of this study was to determine the predictive factors for maternal role development for mothers of premature infants. METHODS: A descriptive correlational study was conducted. A total sample of 121 mothers of premature infants following discharge from the neonatal intensive care unit were recruited using two strategies; an internet-based survey and an in-person data collection in a tertiary university hospital in Korea. A self-report questionnaire was used to collect data regarding personal, birth variables, marital intimacy, maternal attachment, maternal identity and maternal role development. RESULTS: A hierarchical multiple regression analysis indicated that parity, maternal attachment, marital intimacy and maternal identity were predictors for maternal role development for mothers of premature infants, accounting for 70% of the variance. Among these variables, maternal attachment is the most powerful predictor for maternal role development. CONCLUSION: Nursing interventions during hospitalization to post-discharge education that includes parents of premature babies with positive interaction between couples strengthening marital intimacy and promotes maternal attachment that leads to integrate maternal identity should be considered by priority. Community-based family services such as home visits should be focused on maximizing the predictive factors for maternal role development in transition to motherhood that can contribute to maternal health as well as optimal growth and development of premature infants.
Data Collection ; Education ; Family Characteristics ; Female ; Growth and Development ; Hospitalization ; House Calls ; Humans ; Infant, Newborn ; Infant, Premature* ; Intensive Care, Neonatal* ; Korea ; Maternal Health ; Mothers* ; Nursing ; Parents ; Parity ; Parturition

Objective: We aimed to assess the associations between problematic smartphone use, unhealthy behaviors, and mental health status among adolescents. Methods: The data for this cross-sectional study were obtained from the 13th Korea Youth Risk Behavior Survey (2017). From among the 62,276 adolescents who participated in this nationwide web-based survey, 54,603 (87.7%) who used smartphones were selected as the study population. Unhealthy behaviors included smoking, drinking, physical inactivity, skipping breakfast, and fast food consumption. For the examination of mental health status, we considered sleep disturbances, stress, depressive symptoms, suicidal ideation, and suicide attempts. The associations between problematic smartphone use, unhealthy behaviors, and mental health were analyzed using multiple logistic regression analyses. Results: More than four hours of use on weekdays (31.3%) and weekends (61.3%) and the use of smartphones for communication (46.9%) were associated with unhealthy behaviors and mental health problems. Furthermore, adolescents who experienced conflicts with family (22.3%) and friends (25.8%) and academic problems (3.4%) were likely to have health problems. Conclusion The results suggest that problematic smartphone use may disrupt adolescents’ health. Therefore, there is a need for prevention programs for problematic smartphone use at home and at school to improve adolescents’ health.

Objective: We aimed to assess the associations between problematic smartphone use, unhealthy behaviors, and mental health status among adolescents. Methods: The data for this cross-sectional study were obtained from the 13th Korea Youth Risk Behavior Survey (2017). From among the 62,276 adolescents who participated in this nationwide web-based survey, 54,603 (87.7%) who used smartphones were selected as the study population. Unhealthy behaviors included smoking, drinking, physical inactivity, skipping breakfast, and fast food consumption. For the examination of mental health status, we considered sleep disturbances, stress, depressive symptoms, suicidal ideation, and suicide attempts. The associations between problematic smartphone use, unhealthy behaviors, and mental health were analyzed using multiple logistic regression analyses. Results: More than four hours of use on weekdays (31.3%) and weekends (61.3%) and the use of smartphones for communication (46.9%) were associated with unhealthy behaviors and mental health problems. Furthermore, adolescents who experienced conflicts with family (22.3%) and friends (25.8%) and academic problems (3.4%) were likely to have health problems. Conclusion The results suggest that problematic smartphone use may disrupt adolescents’ health. Therefore, there is a need for prevention programs for problematic smartphone use at home and at school to improve adolescents’ health.

Lower extremity deep vein thrombosis (DVT) is a serious medical condition that can result in local pain and gait disturbance. DVT progression can also lead to death or major disability as a result of pulmonary embolism, postthrombotic syndrome, or limb amputation. However, early thrombus removal can rapidly relieve symptoms and prevent disease progression. Various endovascular procedures have been developed in the recent years to treat DVT, and endovascular treatment has been established as one of the major therapeutic methods to treat lower extremity DVT. However, the treatment of lower extremity DVT varies according to the disease duration, location of affected vessels, and the presence of symptoms. This article reviews and discusses effective endovascular treatment methods for lower extremity DVT.

Lower extremity deep vein thrombosis (DVT) is a serious medical condition that can result in local pain and gait disturbance. DVT progression can also lead to death or major disability as a result of pulmonary embolism, postthrombotic syndrome, or limb amputation. However, early thrombus removal can rapidly relieve symptoms and prevent disease progression. Various endovascular procedures have been developed in the recent years to treat DVT, and endovascular treatment has been established as one of the major therapeutic methods to treat lower extremity DVT. However, the treatment of lower extremity DVT varies according to the disease duration, location of affected vessels, and the presence of symptoms. This article reviews and discusses effective endovascular treatment methods for lower extremity DVT.

PURPOSE: The aim of this study was to determine the survival rates of implants placed in grafted maxillary sinuses and compare the results obtained with graft materials, implant surfaces and timing of implant placement. MATERIALS AND METHODS: Between January 1996 and December 2005, 391 implants were placed in 161 patients who underwent sinus grafting treatment simultaneously or separately at Ewha Womans University Hospital. According to inclusion criteria, 272 implants were placed in 102 patients with 112 sinus grafts (30 females, 72 males), aged 26 to 88 years (mean age 49.0+/-9.7). The follow-up period ranged from 12 to 134 months (mean F/U 47+/-32). Survival rates were evaluated according to graft material, implant surface and timing of implant placement. The Kaplan-Meier procedure and the log rank (Mantel-Cox) test were used to estimate survival rates and test for equality of survival rates between different groups of patients. RESULTS: Ten-year cumulative survival rate for implants placed in the grafted sinuses was 90.1%. The survival rates for autogenous bone, combination and bone substitutes were 94.6%, 85.9% and 100%, respectively (p > 0.05). According to implant surface, survival rates were 84.8% in machined group and 97.5% in rough group (p < 0.05). The survival rates were 92.9% in delayed group and 86.0% in simultaneous group (p > 0.05). CONCLUSION: Ten-year cumulative survival rate for implants placed in the grafted sinuses was 90.1%. Rough-surfaced implants have a higher survival rate than machined-surfaced implants when placed in grafted sinuses (p < 0.05).
Aged ; Bone Substitutes ; Female ; Follow-Up Studies ; Humans ; Maxillary Sinus ; Retrospective Studies ; Survival Rate ; Transplants

STATEMENT OF PROBLEM: Translucency and masking effect of provisional crown and fixed partial denture materials is an important esthetic consideration. But, provisional resin materials differ substantially in their ability to mask underlying colors. PURPOSE: The purpose of this study was to evaluate the translucency differences of provisional resin materials at various thicknesses and the correlation between the translucency and the masking efficiency. MATERIAL AND METHODS: Two polymethyl methacrylate resins (Jet Tooth Shade, Alike) and three resin composites (Protemp 3 Garant, Luxatemp and Revotek LC) were used. Specimens (n=6) were fabricated from each material in 0.3, 0.5, 0.8, 1.0, 1.5, 2.0 and 3.0 mm thickness. The CIELAB parameters of each specimens were measured using a spectrophotometer. The translucency parameter (TP) values and the masking effect (delta ME*(ab)) values were computed and all data were statistically analyzed by one-way ANOVA and the multiple comparisons Scheffe test. The correlation between the thickness and the TP values and the correlation between the thickness and the delta ME*(ab) values were also evaluated by correlation analysis and regression analysis. RESULTS: The TP values and the delta ME*(ab) values were significantly related to the thickness in all specimens. The TP values were more sensitive to the change of thickness than the delta ME*(ab) values. The order of the translucency by brand was different from the order of the masking effect by brand in all thickness groups. CONCLUSION: Within the limitations of this study, the translucency and masking effect of the provisional resin materials investigated were significantly related to their thickness. The masking effect of provisional resin was correlated with the translucency parameter, but the order of the masking effect by brand was different from the order of the translucency parameter.
Crowns* ; Denture, Partial, Fixed* ; Masks* ; Polymethyl Methacrylate ; Tooth

Statement of problem. Although many studies have been carried out to investigate the correlation between the degree of conversion and the flexural strength of composite resins, there is minimal information in the literature attempting to compare degree of conversion, flexural strength and their correlation between restorative composite resins and flowable composite resins. Purpose. The purposes of this study were to measure the degree of conversion and flexural strength of composite resins with different rheological behavior and to correlate the two properties. Materials and methods. Four restorative (Vit-l-escence, Z-250, Tetric ceram, Esthet-X) and four flowable (Aeliteflo, Admiraflow, Permaflo, Revolution) light-curing composite resins were investigated. The degree of conversion(DC) was analyzed with Fourier transfer infra-red spectroscopy(FTIR) spectrum by a potassium bromide(KBr) pellet transmission method. The spectrum of the unpolymerized specimen had been measured before the specimen was irradiated for 60s with a visible light curing unit. The polymerized specimen was scanned for its FTIR spectrum. The flexural strength(FS) was measured with 3-point bending test according to ISO 4049 after storage in water at 37 degree C for 24 hours. The data were statistically analyzed by an independent sample t-test and one-way ANOVA at the significance level of 0.05. The dependence of flexural strength on the degree of conversion was also analyzed by regression analysis. Results. Mean DC and FS values ranged from 43% to 61% and from 84.7MPa to 156.7MPa respectively. DC values of the flowable composite resins were significantly higher than those of restorative composite resins (P < 0.05). The FS values of restorative composite resins were greater than those of flowable composite resins. No statistically significant correlation was observed between the DC and the FS tested in any of the composites. The dependence of FS on DC in restorative or flowable composite resins was not significant. Conclusion. It can be concluded that radical polymerization of the organic matrix is not a major factor in determining flexural strength of the commercially available composite resins.
Composite Resins* ; Light ; Polymerization ; Polymers ; Potassium ; Spectroscopy, Fourier Transform Infrared ; Water