Factors Influencing Exercise Behavior of the Male Manual Worker and Office Worker based on Health Promotion Model / 한국직업건강간호학회지

PURPOSE: The purpose of this study was to identify factors influencing exercise behaviors of the male manual workers and office workers based on health promotion model by examining the relationships among them, and then to provide basic information for developing exercise program. METHODS: The 97 laborers and 99 officiers were collected from two worksites. Data were analyzed using descriptive statistics, t-test, ANOVA, Pearson's correlation coefficients and multiple regression. RESULTS: Male laborers' exercise behavior was significantly influenced by exercise self-efficacy, exercise social support and exercise experience over 3 months, and these factors explained 50.2% of the total variance. Male officiers' exercise behavior was significantly influenced by exercise self-efficacy, subjective health status, perceived exercise barriers and exercise social support, and they explained 47.3% of the total variance. CONCLUSIONS: Based on the findings that exercise self-efficacy and exercise social support commonly influence exercise behavior of male laborers and officiers, there is a need to develop an exercise program to improve exercise self-efficacy and exercise social support.

Factors associated with Problem Drinking in Korean Male Employees for Drinking Motivation, Job Stress, and Drinking Refusal Self-efficacy / 한국직업건강간호학회지

PURPOSE: The purpose of this study was to examine relationships between drinking motivation, drinking refusal self-efficacy, job stress and problem drinking, and identify contributing factors on employees' problem drinking. METHODS: A total of 191 employees recruited from two worksites. Data were analyzed using descriptive statistics, t-test, ANOVA, and Pearson's correlation coefficient, and multiple regression. RESULTS: A 65.5% of employees has shown as hazardous drinking. Employees' problem drinking was significantly influenced by coping motives as a sub-factors of drinking motives (beta=.25) and social pressure as a sub-factors of drinking refusal self-efficacy(beta =-.57), explained 51.2% of the total variance. CONCLUSION: Considering the results of this study, healthy workplace culture for preventing employees' problem drinking should be builded. In addition, alcohol education program and effective employee assistance program need to be developed.

The bonding durability of total etching adhesives on dentin / 대한치과보존학회지

The purpose of this study was to evaluate the effect of different etching times on microtensile bond strength (microTBS) to dentin both initial and after thermocycling with 3 different types of total-etching adhesives. Fifty four teeth were divided into 18 groups by etching times (5, 15, 25 sec), adhesives types (Scotchbond Multipurpose (SM), Single Bond (SB), One-Step (OS)), and number of thermocycling (0, 2,000 cycles). Flat dentin surfaces were prepared on mid-coronal dentin of extracted third molars. After exposed fresh dentin surfaces were polished with 600-grit SiC papers, each specimen was acid-etched with 35% phosphoric acid (5, 15, 25 sec) and bonded with 3 different types of total etching adhesives respectively. Then, hybrid composite Z-250 was built up. Half of them were not thermocycled (control group) and the others were subjected to 2,000 thermocycle (experimental group). They were sectioned occluso-gingivally into 1.0 x 1.0 mm2 composite-dentin beams and tested with universal testing machine at a crosshead speed of 1.0 mm/min. Within limited data of this study, the results were as follows 1. There was no statistically significant difference in microTBS between the thermocycled and non-thermocycled groups, except for both SM and SB etched for 25 sec. 2. In thermocycled SM and SB groups, bond strength decreased by extended etching time. In total etching systems, adhesive durability for dentin could be affected by type of solvents in adhesive and etching time. Especially, extended etching time may cause deteriorate effects on bond strength when ethanol-based adhesive was used.

A cephalometric and dental cast study of obstructive sleep apnea patients / 대한치과교정학회지

To evaluate the cephalometric and dental characteristics of obstructive sleep apnea (OSA) patients, 23 OSA patients and 15 control, non-OSA, patients who visited the Sleep Disorder Clinic Center, Keimyung University were investigated. Patients who suffered from apnea-hypopnea episodes over 10 times per hour were diagnosed as having OSA after polysomnograph testing. Impressions were taken with alginate. Cephalometric radiographs were taken at maximum intercuspation. The dental cast measurements, including transpalatal width, intercanine width, intermolar width and palatal depth did not differ between the control and OAS groups and did not have a positive correlation with the apnea-hypopnea index (AHI). Upper airway width was statistically narrower than the control group. Upper airway width had a low negative correlation with AHI, but, lower airway width had a low positive correlation, and, the higher the AHI score, the longer the mandibular border to hyoid distance.

Evaluation of craniofacial growth prediction method on Class III malocclusion patients / 대한치과교정학회지

This study was performed to evaluate whether growth prediction method can be used to diagnose and make treatment plan in skeletal Class III malocclusion patients or not. The sample was consisted of 25 patients(13 males, 12 females) who had been diagnosed with skeletal Class III malocclusion at first visit and after that had returned to take orthognathic surgery. Growth prediction performed with Ricketts' growth prediction method from first cephalogram was compared with actual growth of the second cephalogram. The findings of this study were as follows ; 1. There was significant difference between actual growth and growth prediction in Porion Location, Ramus Position, Facial Depth, Facial Axis, Mandibular Plane angle, Maxillary Convexity. So, for these items Ricketts' growth prediction method is not proper to predict growth. 2. Although the growth amount of mandibular body was similar to normal growth amount, mandible was positioned anteriorly because of Porion Location and Ramus Position. 3. In skeletal Class III malocclusion patients, the tendency of mandibular prognathism might be aggreviated because of anterior placement of ramus and anterosuperior rotation of pogonion.