No abstract available.
Dentistry ; Endodontics ; Peer Review

No abstract available.
Dentistry ; Endodontics ; Peer Review

PURPOSE: The aim of this study was to examine the relationship between tooth loss and sub-clinical atherosclerosis in Korean adults. MATERIALS AND METHODS: The subjects were part of a cohort study conducted in Ansan city by the Korea University medical school as part of the Korean Genome project. 749 subjects over than 40 years old were evaluated. After taking panoramic radiography, the amount of tooth loss was calculated. The intima-media thickness (IMT) was assessed by using ultrasonography at the common carotid artery. Traditional cardiovascular risk factors for atherosclerosis were also evaluated. The relationship between tooth loss and the IMT was evaluated using ANOVA with Scheffe's multiple comparison method in univariate analysis. Multiple regression analysis was also performed to determine the significance between the IMT and tooth loss. RESULTS: With age, tooth loss increased, but there was no significant increase in other traditional cardiovascular risk factors. Univariate analysis revealed the IMT to be positively related with the amount of tooth loss. Regression analysis of the IMT in the anterior and posterior tooth loss revealed that only the posterior tooth loss was significantly related with the IMT at all sites of the common carotid artery (right far wall, P = .015; left far wall, P = .008; right near wall, P < .001; left near wall, P = .001). CONCLUSION: This study verified the positive relationship between the increased tooth loss at the posterior area and the accumulation of atheroma in arteries.
Adult ; Arteries ; Atherosclerosis ; Carotid Artery, Common ; Carotid Intima-Media Thickness ; Cohort Studies ; Genome ; Humans ; Korea ; Plaque, Atherosclerotic ; Radiography, Panoramic ; Risk Factors ; Schools, Medical ; Tooth ; Tooth Loss

OBJECTIVES: The aim of this study was to evaluate the various NiTi rotary instruments regarding their ability to provide a circular apical preparation. MATERIALS AND METHODS: 50 single canal roots were selected, cut at the cementodentinal junction and the coronal 1/3 of the canals was flared using Gates Glidden burs. Samples were randomly divided into 5 experimental groups of 10 each. In group I, GT files, Profile 04 and Quantec #9 and #10 files were used. In Group II Lightspeed was used instead of Quantec. In Group III, Orifice shaper, Profile .06 series and Lightspeed were used. In Group IV, Quantec #9 and #10 files were used instead of Lightspeed. In Group V, the GT file and the Profile .04 series were used to prepare the entire canal length. All tooth samples were cut at 1 mm, 3 mm and 5 mm from the apex and were examined under the microscope. RESULTS: Groups II and III (Lightspeed) showed a more circular preparation in the apical 1mm samples than the groups that used Quantec (Group I & IV) or GT files and Profile .04 series.(Group V)(p < 0.05) There was no significant difference statistically among the apical 3, 5 mm samples. In 5 mm samples, most of the samples showed complete circularity and none of them showed irregular shape. CONCLUSIONS: Lightspeed showed circular preparation at apical 1 mm more frequently than other instruments used in this study. However only 35% of samples showed circularity even in the Lightspeed Group which were enlarged 3 ISO size from the initial apical binding file (IAF) size. So it must be considered that enlarging 3 ISO size isn't enough to make round preparation.
Nickel ; Titanium ; Tooth

No abstract available.
Body Weight* ; Diet* ; Exercise Therapy* ; Humans

PURPOSE: This study was performed to explore the effect of senior simulation on nurses' attitudes toward the elderly. METHOD: Twenty-seven nurses working in various settings such as acute hospitals, community health centers, geriatric hospitals, and clinics were recruited. Among them, 25 subjects completed the whole experimental protocol. Aging Semantic Differential Scaling was utilized to evaluate attitudes toward the elderly and 'Suit for Experiencing Being Aged' from the Sakamoto Model was provided for the experiment. Before and after the experiment subjects filled out questionnaires. RESULT: Attitude score before experiment was 4.36, which indicates neutral attitude. Objective attitude scores were not different significantly after experiment. However subjective statements indicated attitude changes in a positive way. CONCLUSION: Senior simulation can affect nurses' attitude toward elderly in subjective way. That is, nurses became more empathetic and understanding to elderly's physical limitations and felt more initiative nursing approach were needed in caring elderly.
Adult ; *Aged ; *Attitude of Health Personnel ; Female ; Humans ; Nurse-Patient Relations ; Nurses/*psychology ; *Patient Simulation

BACKGROUND: Fluid overload prior to continuous renal replacement therapy (CRRT) is an important prognostic factor. Thus, precise evaluation of fluid status is necessary to treat such patients. In this study, we investigated whether fluid assessment using bioelectrical impedance analysis (BIA) can predict outcomes in critically ill patients requiring CRRT. METHODS: A prospective observational study was performed in patients who were admitted to the intensive care unit and who required CRRT. BIA was conducted before CRRT; then, the ratio of extracellular water to total body water (ECW/TBW) was derived to estimate volume status. RESULTS: A total of 31 patients treated with CRRT were included. There were 18 men (58.1%), and the median age was 67 years (interquartile range, 51 to 78 years). Fourteen patients (45.2%) died within 28 days after CRRT initiation. Patients were divided into 16 with ECW/TBW ≥0.41 and 15 with ECW/TBW <0.41. Survival rate within 28 days was different between the two groups (P = 0.044). Cox regression analysis revealed a relationship between ECW/TBW ≥0.41 and 28-day mortality, but it was not statistically significant (hazard ratio, 3.0; 95% confidence interval, 0.9 to 9.8; P = 0.061). Lastly, the area under the curve of ECW/TBW for 28-day mortality was analyzed. The area under the curve of ECW/TBW was 0.73 (95% confidence interval, 0.54 to 0.92), and this was significant (P = 0.037). CONCLUSIONS: Fluid status can be assessed using BIA in critically ill patients requiring CRRT, and BIA can predict mortality. Further large trials are needed to confirm the usefulness of BIA in critically ill patients.
Body Water ; Critical Illness* ; Electric Impedance* ; Humans ; Intensive Care Units ; Male ; Mortality ; Observational Study* ; Prospective Studies* ; Renal Replacement Therapy* ; Survival Rate ; Water

OBJECTIVES: This study was performed to investigate the biocompatibility of newly introduced Bioaggregate on human pulp and PDL cells. MATERIALS AND METHODS: Cells were collected from human pulp and PDL tissue of extracted premolars. Cell culture plate was coated either with Bioaggregate or white MTA, then the same number of cells were poured to cell culture dishes. Cell attachment and growth was examined under a phase microscope after 1,3 and 7 days of seeding. Cell viability was measured and the data was analyzed using Student t-test and one way ANOVA. RESULTS: Both types of cells used in this study were well attached and grew healthy on Bioaggregate and MTA coated culture dishes. No cell inhibition zone was observed in Bioaggregate group. There was no statistical difference of viable cells between bioaggreagte and MTA groups. CONCLUSIONS: Bioaggregate appeared to be biocompatible compared with white MTA on human pulp and PDL cells.
Bicuspid ; Calcium Hydroxide ; Cell Culture Techniques ; Cell Survival ; Glutamates ; Guanine ; Humans ; Hydroxyapatites ; Periodontal Ligament ; Seeds ; Silicates ; Pemetrexed

PURPOSE: The purpose of this study was to define and clarify the concept of 'resilience' in patients with cardiovascular diseases. METHODS: A hybrid model was used to develop the concept of resilience. The model included a field study carried out in Cheonan, Korea. The participants in this study were 9 patients with cardiovascular diseases who underwent a percutaneous coronary intervention. RESULTS: The concept of resilience was found to be a complex phenomenon having meanings in two dimensions: the personal-dispositional and interpersonal dimensions. Four attributes and seven indicators were defined. CONCLUSION: A resilient person was defined as one who has a positive attitude toward restoration, the power to reconstruct and control his/her disease (personal dimension), and support from a supportive system with supportive persons (interpersonal dimension). In the clinical setting, resilience plays an important role in managing the care plans of cardiovascular patients. Therefore, nurses who work closely with patients suffering from cardiovascular diseases should be aware of the attributes and indicators of resilience to enhance the resilience of their patients.
Adaptation, Psychological ; Adult ; Attitude to Health ; Cardiovascular Diseases/*psychology ; Female ; Humans ; Interviews as Topic ; Male ; Middle Aged ; *Resilience, Psychological

The migration of intra-uterine devices into the bladder with the formation of stone occurs rarely. We report a case of bladder stone developed on Lippes loop migrated from the uterus.
Foreign Bodies ; Intrauterine Devices* ; Urinary Bladder ; Urinary Bladder Calculi ; Uterus