Korean | English

pISSN : 2287-1705 / eISSN : 2288-2294

2020 KCI Impact Factor : 1.08
Home > Explore Content > All Issues > Article List

2014, Vol.14, No.4

  • 1.

    Understanding and trends of esthetic treatment in prosthodontics : IPS e.max

    강정인 | Heo, Yuri | 이명선 and 1other persons | 2014, 14(4) | pp.447~452 | number of Cited : 1
    Abstract PDF
    With the increase of esthetic demands, most patients want to have restorations which are not only functional but also esthetic. For the esthetic restoration, many ceramic systems have been introduced and applied in dentistry. Among those ceramic restorations, IPS e.max system composed of lithium disilicate glass ceramic is one of the most commonly used systems because it has strength and esthetic characteristics. IPS e.max system is divided into IPS e.max Press and IPS e.max CAD according to the manufacturing methods. IPS e.max Press is fabricated through heat-pressed technique with ceramic ingot, which is very simple. The restorations which are made using IPS e.max system can apply to 3 units restoration for the anterior teeth and premolar, and single posterior tooth restoration. Cementation is one of the most important clinic procedure for the longevity of the restorations. All ceramics are bonded by resin cements, it is classified into three groups including adhesive, self-adhesive, and conventional. Variolink N, which is an adhesive resin cement and manufactured by same company with IPS e.max, is recommended for the bonding of IPS e.max restoration. Conventional and self-adhesive resin cement is also available. The aim of this review article is to provide the understanding of material properties, production procedure and clinical application of IPS e.max system.
  • 2.

    Education, certification system and extent of duty in dental hygienists of developed countries

    Nam.y.o | Yoo Jahea | 2014, 14(4) | pp.453~462 | number of Cited : 4
    Abstract PDF
    Objectives : The purpose of the study is to investigate the education, certification system, and extent of duty of dental hygienist between Korea and five developed countries including United States, Canada, England, Australia, and Japan. Methods : Internet based access to five developed countries was made and the analysis was done for the definition of occupation, main duties, similar occupations, education policy, job descriptions, license certification system, standards of duty, Q & A management, current status of obtaining certification, and scope of work. Results : United States has a two-year associate degree(AS) and a four-year bachelor degree(BS). Canada has two to three years degree and a two-year course is accepted in england and Australia. In the meanwhile, Korea and Japan have two-year and four-year educational courses. The duty of dental hygienists includes the prevention education for dental health and continuing dental health care. Most of the dental hygienists in Korea and Japan play the assistant roles for the dental surgeons. United States has national board examinations including written examinations, practical examinations, and computer assisted examination. Written and practical examinations are also conducted in Korea. England and Australia have the recognized educational organizations for qualification. Conclusions : Problem based and problem solving skills are the most important in dental hygienist education in Korea. The training of highly competent dental hygienists must be done for the improvement of dental hygiene in Korea in the near future.
  • 3.

    The association factors of infection control practice based on health belief model in the dental hygienists

    hong sun hwa | Han Mi Ah | Park, Jong and 3other persons | 2014, 14(4) | pp.463~470 | number of Cited : 5
    Abstract PDF
    Objectives : The purpose of this study was to investigate the association factors of infection control practice based on health belief model in the dental hygienists in dental clinics. Methods : A self-reported questionnaire was filled out by 278 dental hygienists in 160 dental clinics in Gwangju by a proportional stratified sampling method from September 13 to October 7, 2013. Data were analyzed by t-test, ANOVA, correlation analysis, and multiple regression analysis using SPSS version 12.0. Results : In multiple regression analysis, practice scores were significantly higher in aged dental hygienists and those who took infectious disease history from the patients before treatment. With regard to health belief model, perceived barrier was negatively associated with the practice(β=-.16, p<.001), importance of infection control in hand hygiene(β=.14, p=.026), and use of personal protective equipment(β=.17, p=.043). The intention of action was positively associated with the practice(β=.13, p=.002). Conclusions : This study will provide the basic evidence for the quality improvement of infection control and prevention. So the dental hygienists will be able to put into practice in infection control management.
  • 4.

    Correlation between self-esteem and stress after orthodontic treatment in the adolescents

    kyung Hee Lee | Lee, Hea Shoon | 2014, 14(4) | pp.471~478 | number of Cited : 2
    Abstract PDF
    Objectives : The purpose of the study was to investigate the correlation between self-esteem and stress after orthodontic treatment in the adolescents. Methods : A self-reported questionnaires was filled out by 347 high school students from September 23 to October 11, 2013. Data were analyzed using descriptive statistics, χ2-test, Fisher's exact test, t-test and Pearson correlation coefficient by SPSS 20.0 program. Results : Among 347 students, 25.4% of the students experienced orthodontic treatment. Significant differences existed in gender, satisfaction with dental appearance, uncomfortable level of biting and chewing, recognition of orthodontic treatment in orthodontic treatment group and non-treatment group. Self esteem was lower in orthodontic treatment group and stress was higher in orthodontic group. Self esteem had a negative correlation with stress. Conclusions : There existed the close relationship between self-esteem, stress, and dental malocclusion in the adolescents.
  • 5.

    Association between oral health knowledge, attitude and dental caries experience in Korean 12-year-old adolescents

    Jong-Hwa Jang | Kim Jee Hee | KyeongHee Lee | 2014, 14(4) | pp.479~484 | number of Cited : 3
    Abstract PDF
    Objectives : The aim of the study is to investigate the oral health knowledge, attitude and dental caries experience in Korean 12-year-old adolescents. Methods : The subjects were 2,196 adolescents living in Seosan, with an average age of 12.2 years. Data were collected using a self-administered questionnaire from April 10 through June 10, 2011. A trained investigator made an oral examination of them in natural light, using a mirror and an explorer to determine their DMFT index. Results : The prevalence rate of dental caries of adolescents was 59.1%. The DMFT index of the subjects was 1.98, which was lower than the national mean of 2.2 for the same age. The DMFT index was significantly higher in the female(2.25) than the male group(1.72). The attitude of oral health was positively related to DMFT index in this study(OR=1.25; CI=1.01-1.54). It appears that knowledge and attitude concerning oral health, among young Korean 12-year-old adolescents living in Seosan, are in need of improvement. Conclusions : Based on the findings, dental caries experience is associated with attitude of oral health. This result suggests that the implementation of oral health promotion should be considered for various factors related to attitude of oral health in adolescents.
  • 6.

    Health-related lifestyle and self-reported symptoms in dental hygiene students

    Kwon soon suk | Han Su Jin | 2014, 14(4) | pp.485~493 | number of Cited : 1
    Abstract PDF
    Objectives : The study investigated and analyzed the relationship between health-related lifestyle and psychosomatic self-reported symptom in dental hygiene students. Methods : A self-reported questionnaire was filled out by 478 dental hygiene students in Gyeonggi-do and Gangwon-do from March 7 to June 21, 2012 by random sampling method after informed consent. Results : The health-related lifestyle showed the results as follows. Nonsmokers accounted for 89.1%. Those who never exercise accounted for 67.9% and 37.9% of the students sleep for 5-6 hours. Those who take alcohols twice per month accounted for 58.2%. The correlation between the symptoms and lifestyle included multiple subjective symptoms(I), respiratory(A), eyes and skin(B) and digestive organs(C) symptoms and smoking status(p<.01), mouth and anal(D), depression(K), nervousness(E). There existed the correlation in average sleeping time(p<.01) and impulsivess(H) and smoking status(p<.05) and lie scale(L) and regular exercise(p<.05) and aggressiveness(F) and drinking habits and irregular and life(G) and breakfast habits. The smoking habit, sleeping time, and snack intake had an influence on psychosomatic self-reported oral health-related symptoms. Conclusions : Cessation of smoking, adequate sleeping time, and reduction of snack intake can improve the oral health-related lifestyle and reduce the self-reported symptoms in the dental hygiene students.
  • 7.

    The relationship between physical·mental health and life stress in dental hygiene freshman

    Kang Hyun Joo | Byeng Chul Yu | 2014, 14(4) | pp.495~502 | number of Cited : 4
    Abstract PDF
    Objectives : The purpose of this study was to investigate the relationship between psychosocial stress and depression symptoms in dental hygiene freshman. Methods : A self-reported questionnaire of 45 questions was filled out by 207 dental hygiene students in Gyeongnam from December 9 to 11, 2013. Data were analyzed using SPSS WIN 18.0 program for descriptive statistics, t-test, ANOVA. Results : Religion tended to influence on positive effects on academic stress because those having religion had less academic stress. Economic condition also influenced on physical and mental stress in the students(8.52±5.63)(p=0.000). Low economic status influenced on academic problems(p=0.022), family problems(p=0.014), rational relationship problems(p=0.002), and interpersonal problems(p=0.007). There was no significant difference between future problems(p=0.125) and self-efficacy(p=0.076). The physical symptoms included digestive disorders(16.73±5.37), cardiac symptoms(14.61±5.51), headache(9.46±3.59), insomnia(8.32±3.67) (p=0.000). The mental symptoms included negative emotions(15.07±3.94)(p=0.000). Conclusions : In order to reduce the psychosocial stress symptoms in dental hygiene freshman, it is important to develop the stress debriefing program in the future.
  • 8.

    The mediation effect of depression between self-esteem and academic motivation in dental hygiene students

    Kim, Ji-young | 2014, 14(4) | pp.503~509 | number of Cited : 5
    Abstract PDF
    Objectives : The purpose of this study was to investigate the influence of self-esteem on academic motivation, and the mediating effect of depression in dental hygiene students. Methods : A self-reported questionnaire was filled out by 401 dental hygiene students for 2 weeks in June, 2014 in Ulsan and Daegu. The data were analyzed by a descriptive analyses, Pearson correlation, multiple regression analysis and Sobel test. Results : Self-esteem had a significant influence on academic motivation and self-esteem had a significant influence on depression in the dental hygiene students. Conclusions : Depression had a partial mediation effect on the self-esteem and academic motivation.
  • 9.

    Correlation factors to oral health-related quality of life in Chinese students studying in Korea

    PARKJUNGHYUN | Byeng Chul Yu | Park Min Kyung and 1other persons | 2014, 14(4) | pp.511~518 | number of Cited : 4
    Abstract PDF
    Objectives : The purpose of this study is to investigate the correlation factors to oral health-related quality of life in Chinese students studyng in Korea. Methods : A self-reported questionnaire was filled out by 231 students from November, 2012 to January, 2013. Data were analyzed by t-test, one way ANOVA, and Duncan post-hoc test using SPSS version 19.0. Results : Male students and short period staying students tended to have a higher quality of life. Smokers and large city dwellers tended to have a low oral health-related quality of life(p<0.05). The oral health-related quality of life in Chinese students in Korea was closely related to necessity of dental treatment and past experience of dental treatment services(p<0.05). Conclusions : To improve the oral health-related quality of life in foreign students, it is necessary to provide the early prevention of dental caries and periodontal diseases through the systematic and professional dental health care delivery program for the foreign students studying in Korea.
  • 10.

    Relationship between employment stress and oral symptoms in health college students

    SHIN - SEONHAENG | 2014, 14(4) | pp.519~526 | number of Cited : 9
    Abstract PDF
    Objectives : The purpose of the study is to investigate the relationship between employment stress and oral symptoms in health college students. Methods : A self-reported questionnaire was filled out by 275 health college students in Seoul from October 7 to November 29, 2013. The data were analyzed using SPSS WIN 14.0 program. Results : Female students tended to have higher employment stress oral symptoms than male. The higher the employment stress was, the more oral symptoms were. There was a close relationship between personal trait, environmental stress and oral symptoms. Regression analysis showed that tongue, teeth, gum, temporomandibular joint(TMJ) were influenced by the employment stress. Conclusions : It is important to reduce the environmental stress in the students. The students themselves must try to overcome the agonal condition by diverting stress into positive way of living.
  • 11.

    Impact of dental radiography awareness on radiation exposure and concern among adults

    KyeongHee Lee | 변아름 | Soo-Kyung Kim | 2014, 14(4) | pp.527~537 | number of Cited : 4
    Abstract PDF
    Objectives : The purpose of this study was to investigate the influence of the awareness towards dental radiation exposure and concern in the adults. Methods : A self-reported questionnaires was filled out by 470 adults over 19 years old in Seoul from May 16 to July 10, 2013. Results : Fear for dental radiography showed that those who positively thought of radiography had 2.86 folds necessity of radiography than those who did not. Positive responders worried about the hazards of dental radiation 4.64 folds than the negative responders. More worried responders had felt the radiation hazards 1.83 folds than those who worried less. The worried responders also had higher awareness of dental radiation hazards. Conclusions : Frequent use of dental radiography is able to be prevented by protective devices. So it is important to prevent the possible hazards of the dental radiography by personal protective education.
  • 12.

    Knowledge and self care behaviors of orthodontic patients using clear aligner

    Da-Hye Hwang | Yun-Hyun-Kyung | Hwang Tae Yoon | 2014, 14(4) | pp.539~545 | number of Cited : 0
    Abstract PDF
    Objectives : The purpose of the study is to investigate the knowledge and self care behaviors of orthodontic patients using clear aligner. Methods : A total of 181 orthodontic patients using clear aligner in Daegu filled out the self-reported questionnaire from September 6 to October 18, 2010. and 162 subjects completed orthodontic treatment. Results : There existed a significant difference in knowledge and self care behaviors between gender and wearing duration of clear aligner(p<0.01). Treatment duration influenced significantly on the score of self care behaviors(p<0.01) and the high score of self care behavior showed in short duration of treatment. Conclusions : Self care behaviors were closely correlated with treatment duration. An information for the clear aligner will be helpful to improve the knowledge and self care behaviors.
  • 13.

    The relationship between mental illness state and oral health management of mental patients in mental health care institutions

    Yoon Sung Uk | Nam In-Suk | Mae-Sook Jeon | 2014, 14(4) | pp.547~553 | number of Cited : 2
    Abstract PDF
    Objectives : This research aims to analyze the relationship between the state of mental illness and oral health management of mental patients in mental health care institutions. Methods : The data were randomly selected from 474 patients in mental health care institutions. and analyzed by SPSS WIN 12.0 program. Results : Schizophrenia accounted for 79.5%(337 patients) ; alcohol dependency, 5.3%(25 patients) ; mental retardation, 2.7%(13 patients) ; mental development disorder, 3.0%(14 patients) ; mental delusion and dementia, 7.6%(36 patients). Those who were in 40s had the highest dental caries of 3.95 and the highest remaining teeth of 26.76 were shown in the 20s. The correlation between remaining teeth and mental retardation was the highest, measuring 22.38(p<.05). Those who were in 70s had the serious periodontal condition that accounted for 41.3%(12 patients)(p<.05). The correlation coefficient for all factors–dental caries, remaining teeth, need for scaling, and periodontal condition–between mental illness condition and oral health were all positive(p <.05). The regression analysis resulted in the formula Y(mental health condition)=2.999+0.166(dental aries)–0.028(remaining teeth). Conclusions : Those who had mental illness had very poor and serious dental caries and periodontal diseases, so it is necessary to manage the dental health care for the mentally ill patients.
  • 14.

    The relationship between stress perception and oral health status

    최준선 | 2014, 14(4) | pp.555~561 | number of Cited : 11
    Abstract PDF
    Objectives : The aim of this study was to investigate the factors related to stress perception. Methods : A self-reported questionnaire was filled out by 109 people living in Gimpo city from January 16 to April 15, 2013. The data were analyzed using SPSS window ver. 19.0(IBM CO., Armonk, NY, USA) for t-test, one-way ANOVA, and multiple linear regression analysis. Results : Men and group of 59 years old tended to have higher stress perception than women and those who over 60 years old, but the results were not statistically significant. Stress perception was higher among the group with systemic dryness and oral dryness(each≥1) and the group reporting high difficulty in daily living due to oral problem(≥2)(p<0.05). Especially, the factor that was most correlated to stress perception was systemic dryness(β=0.347) followed by problem of daily living for oral problem(β=0.278, p<0.01). Conclusions : Systemic dryness and oral problem can increase the level of stress perception, mouth dryness and oral problems are a part of stress responses. Therefore, the regular health checkup must be done and early treatment to reduce stress perception as well as negative aspects caused by stress. It will contribute to the enhancement of public health and life of quality.
  • 15.

    Relationship between subjective recognition for oral health with oral health status in HBsAg positive carriers

    강은주 | 2014, 14(4) | pp.563~570 | number of Cited : 0
    Abstract PDF
    Objectives : The purpose of this study was to investigate the relationship of subjective recognition for oral health in HBsAg positive carriers based on the data of the 5th National Health and Nutrition Examination Survey. Methods : A statistical package SPSS 21.0 was used to analyze the relationship between oral health status and subjective oral health awareness based on data of the 5th National Health and Nutrition Examination Survey. Results : The subjective poor oral health was found in those who had mastication and speaking discomfort and those having dental prosthesis. Conclusions : The respondents considered themselves to be in poor oral health when the subjective systemic health status and objective oral health status were worse.
  • 16.

    The relationship between breastfeeding and early childhood caries

    박지혜 | 2014, 14(4) | pp.571~576 | number of Cited : 1
    Abstract PDF
    Objectives : The purpose of this study was to investigate the relationship between early childhood caries(ECC) and breastfeeding. Methods : Data of 670 children were derived from the Forth Korean National Health and Nutrition Examination Survey from 2007 to 2009. Demographic and socioeconomic data, oral health related behavior, and breastfeeding practice data were collected as independent variables. The ECC was used as a dependent variable. The chi-square test and logistic regression analysis were performed to identify the relationship between ECC and the other variables. Results : Multiple logistic regression analysis revealed that ECC was related with age, tooth brushing frequency, and breastfeeding practice. Conclusions : This study confirmed various risk indicators of ECC in Korean children, using Korean national survey data. Parents should begin an early and consistent mouth care regime to decrease the risk of ECC.
  • 17.

    Dental fear and oral health-related quality of life by mediating variable model(self-esteem & self-regulation)

    lee hye kyung | Kim,Nam-Song | 2014, 14(4) | pp.577~584 | number of Cited : 7
    Abstract PDF
    Objectives : The purpose of the study is to investigate the relationship between the dental fear, self-esteem, and self-regulation in oral health quality of life in the adolescents. Methods : A self-reported questionnaire was filled out by the 826 adolescents from March 5 to 16, 2012 in J city. Results : Higher self-esteem(=0.186) was closely related to higher oral health-related quality of life(p<0.001). Dental fear had indirectly influenced on self-esteem and self-regulation, and had significant differences(p<0.05). The model showed that dental fear and oral health-related quality of life were a suitable structural model due to higher fit indices. Conclusions : Self-esteem and self-regulation were the important variables to oral health-related quality of life. There was a close relationship between the dental fear and oral health-related quality of life.
  • 18.

    Tooth bleaching effect by light activation on the tooth surface and intra-pulpal temperature: an in vitro study

    SHIM YOUN-SOO | Woo Hee Sun | 2014, 14(4) | pp.585~591 | number of Cited : 1
    Abstract PDF
    Objectives : The purpose of this study was to investigate of the color change, tooth surface and intra-pulpal temperature of tooth bleaching by light activationMethods : Forty-eight extracted bovine teeth were immersed into a tea solution for 24 hours. The specimens were randomly divided into four groups(n=15):(G1) 15% HP + without light activation, (G2) 15% HP + light activation, (G3) 25% HP + without light activation, (G4) 25% HP + light activation. All specimens were bleached for 15 minutes three times. The spectrophotometer (CM-2600d, Konica Minolta, Osaka, Japan) was used including before bleaching, immediately after bleaching, 1 week, 1 and 3 months after the end of bleaching. The temperature rise were measured in the pulpal chamber and tooth surface with a digital thermocouple thermometer(Termopar Digital Multimeter, Tektronix DMM916, USA). Between the tested time points, the specimens were stored in distilled water. The data were analyzed by ANOVA, t-test and Tukey’s post hoc test set at 0.05. Results : There was no significant color change by the use of light after the bleaching treatment(p>0.05). The dental bleaching treatments of teeth with 15% HP and 25% HP did not seem to be more effective when light source was used. There was no difference in color stability between groups within three month(p>0.05). There was an increase in tooth surface and pulp temperature, but it was not sufficient to cause damage to the pulp. Conclusions :The use of light activation has no obvious effective impact on the tooth bleaching effect.
  • 19.

    Bacteria reduction ratio by cleansing methods of latex gloves

    Song-Yi Yang | 오정민 | 송다혜 and 5other persons | 2014, 14(4) | pp.593~599 | number of Cited : 1
    Abstract PDF
    Objectives : Latex gloves hygiene is the most effective method to prevent infection of microorganisms and to reduce the incidence of cross infections. The aim of this study was to compare the bacteria reduction ratio of cleansing with water, liquid soap and alcohol gauze. Methods : The left side glove was the control group and the right side was the experimental group. The experimental group washed hand with water, soap, and alcohol gauze. The hand plate was inoculated by the hand and inoculated for 24 hours in 35℃. Results : Washing with water showed that CFU of control group was 1116.9 and that of experimental group was 302.8. Hand washing by water reduced 74.3% of bacteria. Liquid soap revealed that CFU of control group was 619.9 and that of experimental group was 8.3. Hand washing by liquid soap reduced 97.5% of bacteria. Alcohol gauze included 875.2 CFU in control group and 5.8 CFU in experimental group. Washing by alcohol gauze reduced 99.5% of bacteria. Conclusions : Based on the results, the most effective latex gloves cleansing method was recommended as the standardized hand washing with the liquid hand soap and alcohol gauze. The results can be used to improve training strategies for enhancing glove hygiene practice in dental clinic.
  • 20.

    Apoptotic effect of Pseudomonas aeruginosa exotoxin A in human tongue squamous cell carcinoma(SCC) 25 cells

    최별보라 | KIM,GYOO-CHEON | 2014, 14(4) | pp.601~608 | number of Cited : 1
    Abstract PDF
    Objectives : The purpose of the study is to examine the apoptotic effects of Pseudomonas aeruginosa exotoxin A(PEA) in squamous cell carcinoma(SCC) 25 cells. Methods : Cell growth reduction and apoptosis induced by PEA were confirmed by WST-1 assay, Hoechst 33258 staining, flow cytometry analysis, and Western blot assay. Results : The PEA treatment decreased the cell viability in a dose and time dependent manner: control; 100±0e(p<0.01), 0.1875 nM; 87±4.36d(p<0.01), 0.375 nM; 82±0.58d(p<0.01), 0.75 nM; 72±1.67c(p<0.01), 1.5 nM; 51±1.53bc(p<0.01), 7.5 nM; 31±1.20ab(p<0.01), 15 nM; 26±0.67a(p<0.01), control; 100±0a(p<0.05), 24 h; 51±1.53b(p<0.05), 48 h; 16±0.5c(p<0.05), 72 h; 12±1.67d%(p<0.05). The PEA was observed on SCC 25 cells with the half maximal inhibitory concentration(IC50) value of 1.5 nM at 24 hours. The PEA treated SCC 25 cells demonstrated several types of apoptotic indications, such as nuclear condensation, the increase of sub G1, and the cleavage of PARP-1 and DFF 45. Conclusions : PEA showed anti-cancer activity against SCC 25 cells via apoptosis. PEA may potentially contribute to human oral cancer treatment.