• 대한예방의학회:학술대회논문집
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• 2001.10a
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• pp.445-445
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• 2001

• Journal of Korean Clinical Health Science
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• v.5 no.3
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• pp.907-914
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• 2017

Purpose : This study was conducted to provide basic data on the relationship between environmental factors causing stress in clinical practice institutions and stress levels of dental hygiene students. Methods : The research subjects totaled 207 and it was analyzed with structured questionnaires. The collected data were analyzed using an IBM SPSS ver. 20.0. Results : The environmental factors causing stress according to the status of clinical practice institutions was statistically and significantly different in the case of Busan practice areas (p<0.01), dental university hospitals (p<0.001), attendance times prior to 8am (p<0.001), quitting times that surpassed 8pm (p<0.01), and the number of dentists exceeding 4 (p<0.01). It was found to affect the stress level of students when individuals had to stand for a long period of time(p<0.001, ${\beta}=0.254$) and with the use of unfamiliar tools and equipment(p<0.05, ${\beta}=0.178$). Conclusions : As a result of the research conducted, it should be concluded that dental clinics should provide rest areas for individuals to focus on clinical practice. In addition, it is necessary to develop a systematic program that enables students to communicate with students at any time during the training period.

• Journal of the Korean Society of Physical Medicine
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• v.3 no.4
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• pp.247-254
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• 2008

Purpose : The purpose of this study was to analyze some factors that can cause incidence of the muscle and skeletal system trouble, by which Dental Hygiene Students examine the pain and the inconvenient feeling according to kinds in manual implements and the usability in the level of manipulating and maintaining the manual implement, in the actual training of the intra oral cavity along with mannequin given the scaling practice. Methods : Targeting 18 female juniors for the department of dental hygiene, who had directly practiced oral prophylaxis for 2 years, the questionnaire research was carried out right after the mutual practice in the intra oral cavity along with mannequin. Results : It was indicated that there is no big difficulty both in intra oral cavity and mannequin in terms of manipulating implement with a method of maintaining the rightly hand fixing or of grasping the trans formative pencil and of controlling force given manipulating the implement. How to grasp a trans formative pencil was indicated to be more difficult in the intra-oral manipulation(p<.05). Pain and inconvenient-feeling level, which occur in muscle and skeletal system during practicing the scaling in mannequin, were indicated to be in order of shoulder, wrist, neck, waist, elbow, and headache. Conclusion : There was no big difference in the pain and the inconvenient feeling in muscle and skeletal system according to mannequin and intra-oral environment given manipulating tile manual implement. However, there was difference in manipulating the implement with a method of grasping transformative pencil. The pain and inconvenient feeling in muscle and skeletal system were the highest both in shoulder and wrist.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.28 no.1
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• pp.24-30
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• 2002

The facial patterns were expressed by the interrelation of variable factors such as heredity, function and environment. Such variable factors have an effect on the growth and development of maxillofacial bones. The malocclusions with skeletal discrepancies are caused by abnormal forms, sizes and positions of cranial base, maxilla and mandible. For the proper diagnosis and treatment planning, the analysis of such structures is necessary. Lateral cephalograms of 54 adults with class III malocclusion patients (test group) and 61 adults with normal occlusion (control group) were analyzed. Anteroposterior relations and sizes of cranial base, maxilla, mandible were estimated to compare with those of normal ones. In test group, the anterior cranial base length was within normal range, but posterior cranial base, maxilla and mandibular body were longer than those in control group, significantly. Based on the cranial base, the location of maxilla in test group was normal, but the location of mandible was more anterior than that in control. Based on the maxilla, the location of mandible was more anterior in test group than that in control. Both mandibular body and ramus anteroposterior lengths in test group were larger than those in control. Both mandibular plane angle and upper gonial angle were within normal range, but lower gonial angle was significantly high in test group.

• The Journal of Korean Academy of Prosthodontics
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• v.35 no.4
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• pp.781-792
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• 1997

This study was peformed to evaluate the dynamic fatigue characteristics of the dental ceramics for all-ceramic crown. A feldspathic porcelain of VMK68. glass ceramic of IPS-Empress, and glass infiltrated alumina ceramic of In-Ceram were used. Disc specimens were prepared to the final dimensions of 12 mm in diameter and 1 mm in thickness. The biaxial flexure test was conducted using a ball-on-three-ball method. 240 specimens were tested in $37^{\circ}C$ water by testing 20 samples at each of four loading rates:0.05, 0.2, 1, and 5mm/min. 60 specimens were tested in a moisture-free environment by testing 20 samples at 5mm/min. The inert strength of VMK68 was 80.25MPa, and the fatigue parameters were n=29.1, ${\sigma}_{fo}=52.90MPa$. The inert strength of IPS-Empress was 104.76MPa, and the fatigue parameters were n=32.46, ${\sigma}_{fo}=67.52MPa$. The inert strength of In-Ceram was 429.33MPa, and the fatigue parameters were n=31.46, ${\sigma}_{fo}=258.36MPa$. 10-year failure stresses of VMK68, IPS-Empress, and In-Ceram were 20.3MPa, 24.8MPa, and 93.6MPa, respectively. Failure strength and fatigue life showed the highest value in In-Ceram, and then, IPS-Empress and VMK68.

• The Journal of the Korea Contents Association
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• v.12 no.9
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• pp.234-243
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• 2012

The purpose of this study was to estimate the prevalence of musculoskeletal symptoms and work-related factors of these symptoms in dental hygienists. The self-administered questionnaire was surveyed and collected from August 1-12 of 2011 targeting 210 dental hygienists Seoul, Gyeonggi, Daegu, Pohang. Except 5 people whose responses are not clear and who suffered accident, the analysis was made on 205 people. Data analysis was performed using the chi square test and multiple logistic regression analysis using the SPSS WIN(ver 18.0) program, RULA and, REBA. The overall Experience rate of musculoskeletal symptoms was 95.6% (196/205). The specific Experience rate of musculoskeletal symptoms for different regions of the body were as follows:The highest was shown 82.4% in Neck-shoulders(R), 78% in Neck, 69.8% in shoulders(R), 66.3%in Wrist(R). Therefore, Improvements of working environments in dental clinics are needed to prevent musculoskeletal disease development in dental hygienists.

• Korean Journal of Health Education and Promotion
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• v.15 no.1
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• pp.151-163
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• 1998

The purpose of this study is to find options which reduce the job stress and to enhance morale through a variable analysis, and also apply this data in the legal and administration fields. The data for the research was obtained from 217 dental hygienists working in the dental clinics, dental hospitals and university's dental hospitals' in Seoul. The tool used by this study was a Questionnaire measuring on-the-job stress of dental hygienists, was a modified and revised. The Questionnaire version used to measure bank's job stress and used to suggest options by Dae-ha Yoon(1991). Classification of items for measuring job stress was based on Theoretical Study on Job Stress by Dae-hyon Song(1986). The scale used in study was the two points (yes or no in the job stress) scale measuring for variables. The period of data collection was 30 days from December 4, 1995 to January 5, 1996. The methods of data collection were self-writing, direct visit, and postal Questionnaire answering, 224 copies of Questionnaire data were collected, but only 217 copies were used. 7 copies could not be analyzed, were not used for this study. The data analysis was conducted by SPSS after coding the collected raw data. The general characteristics was obtained from real digits and percentages. In order to analyze the difference of sub-variables against the job stress based on general characteristics. Mean, Standard Deviation, and F test (ANDVA) were conducted. The following were the results of job stress variables: 1. Meaningful variable affecting the working organization, is compensation system(p〈0.03). 2. Meaningful variable affecting the working period, is work overload(p〈0.02). 3. Meaningful variable affecting average patients per day, is the career management and payment(p〈0.04, p〈0.01). 4. Meaningful variable affecting number of staff, is the comrade relationship, role conflict among patients, work overload, and job overload(p〈0.000, p〈0.05, p〈0.04, p〈0.01). The comrade relationship is most affected to the number of staffs aides. 5. Meaningful variables affecting job diversion, are the desire and value, the non-role play, and the environment(p〈0.003, p〈0.02, p〈0.005).

• Journal of Convergence for Information Technology
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• v.9 no.1
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• pp.1-11
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• 2019

The study was to investigation the correlation between critical thinking and problem-solving abilities of 320 dental hygiene students enrolled in H university, J region from June 1 to August 30, 2018. The data was analyzed by ANOVA, pearson's correlation and multiple regression using SPSS 18.0 program. The correlation between critical score 3.36 while problem solving ability score 3.41. The correlation between critical thinking problem-solving abilities of the subjects was statistically significant. The significant variables included problem-solving(${\beta}=0.107$)(p<0.05), academic performance(${\beta}=-0.081$)(p<0.05) with an explanatory power of 52.2%. It is necessary to develop a curriculum and learning method in improvement for critical thinking and problem-solving abilities change in educational environment of dental hygiene students.

• Journal of the Korea Convergence Society
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• v.10 no.1
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• pp.299-305
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• 2019

The purpose of study was to investigate the effects of career decision efficacy, learning Flow, and academic achievement on department adaptation of dental hygiene students. The subjects of the study are self-administered surveys of 200 students who indicated their intention to participate. 181 questionnaires were analyzed using SPSS 18.0. The results of this study show that career decision efficacy, learning flow, academic achievement affect to major satisfaction, major confidences, major attachment. The results of this study show that career decision efficacy, academic achievement affect to major vision. Some dental hygienists students need support systems such as learning methods and educational environment that can improve academic achievement and learning commitment in order to help students adapt to their department. In addition, education and career support for career decision efficacy should be continuously maintained.

• The Journal of the Korea Contents Association
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• v.18 no.12
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• pp.218-228
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• 2018

The purpose of this study was to present a educational content developed for training of dental extraction skill in a virtual environment. The development of the content consists of five steps: learning content analysis, draw a design model, development, test of validity, rectification and complete of the content. We developed the virtual reality (VR) simulator with producing an animation of surgical stages on the 3D models of human face for simulating dental extraction procedure. The results of validity tests for the content were mean 4.81 (SD, 0.72) for interface validity and mean 4.66 (SD, 0.71) for content validity, which represents strong evidence for the validity of the content. The data of the study indicates that the educational content developed for training of dental extraction skill using VR technology can be suitable to improve surgical skill of dental extraction in clinical field. We expect that further development of the education contents based on the VR technology to improve various surgical skills in clinical field will be addressed in the future.