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2015, Vol.15, No.2

  • 1.

    Preparation for old age of dental hygienists

    SHIM YOUN-SOO | Woo Hee Sun | 2015, 15(2) | pp.179~188 | number of Cited : 3
    Abstract PDF
    The purpose of the study is to investigate the need for the preparation of old age of dental hygienists and happy life. Methods: This study is a descriptive study. A self-reported questionnaire in Likert 5 scale was completed by the dental hygienists in Korea through online report or written report from December, 2012 to June, 2013. Except incomplete answers, 200 data were analyzed. The questionnaire consisted of 10 questions of preparation for old age and awareness for old ages, 9 questions of physical preparation, and 9 questions of emotional preparation. Cronbach’s alpha of old age preparation and awareness of old age was 0.634 in the study. Cronbach’s alpha was 0.709 and 0.757 in physical preparation and emotional preparation, respectively. The final analyses of 200 copies were conducted using SPSS 11.5 software for Windows(SPSS Inc., Chicago, lllinois, USA). Results: Awareness toward preparation for old age of dental hygienists was 3.72 points, physical preparation was 2.94 points, and emotional preparation was 2.91 points. Awareness toward preparation for old age of dental hygienists showed the relationship between birth date, marital status, education level, and subjective health condition. Physical preparation was closely related to birth date, marital status, education level, and the workplace. Emotional preparation was closely related to birth date, marital status, education level, and the workplace. Conclusions: This study suggested that preparation for old age of dental hygienists was very important and the preparation must be connected with the social welfare policy.
  • 2.

    Relationship between saliva factors and oral hygiene factors in adults

    MINHEE HONG | 2015, 15(2) | pp.189~196 | number of Cited : 1
    Abstract PDF
    Objectives: The purpose of the study is to investigate the relationship between saliva factors and oral hygiene factors in adults. Methods: The subjects were 112 adults from April 1 to June 15, 2014. The selected salivary factors included stimulated/unstimulated salivary flow rates, salivary buffering capacity and pH, and the selected oral hygiene factors included halitosis, wet weight of tongue plaque and oral humidity in dorsum and inferior surface of tongue. Results: There were significant differences in stimulated/unstimulated salivary flow rates, oral malodor and wet weight of tongue plaque. There were significant differences according to age in stimulated/ unstimulated salivary flow rates, salivary buffering capacity and wet weight of tongue plaque. Age had a negative correlation with salivary buffering capacity and had a positive correlation with wet weight of tongue plaque. Unstimulated salivary flow rate had a positive correlation with stimulated salivary flow rate, and stimulated salivary flow rate was positively correlated with oral humidity of inferior surface of tongue, salivary buffering capacity and halitosis. Oral humidity of inferior surface of tongue had a positive correlation with salivary buffering rate, pH and halitosis. Salivary buffering capacity was positively correlated with pH, and pH was negatively correlated with halitosis. Conclusions: The salivary factors were linked to the oral hygiene. As there may be great changes in salivary flow rate and oral hygiene due to various factors, the salivary factors seem to be one of the major factors to ensure oral hygiene and to promote oral health.
  • 3.

    Health-related quality of life by oral health behavior and oral health status for the Middle-aged people

    문보애 | 정선락 | Jang Jung Yoo and 1other persons | 2015, 15(2) | pp.197~204 | number of Cited : 14
    Abstract PDF
    Objectives: The purpose of this study was to investigate the relation between health-related quality of life and oral health behavior and oral health status, and to provide the basic data for national oral health policy. Methods: The primary data of the 5th National Health Examination and Nutritional Survey(NHANES) in 2012 were used in this study. The subjects were 2,243 middle-aged people(40-59 years old), 827 persons were excluded for missing value or having diseases affecting quality of life(depression, stroke, cardiac infarction, angina, liver cancer, stomach cancer, colon cancer, breast cancer, cervical cancer, lung cancer, thyroid cancer, other cancers, arthritis), and 1,416 data were finally analyzed. Results: In health-related quality of life by subjects' characteristics, there was significant difference in gender, age, education, family income, and employment status(p<0.01) except for current smoking. Oral health behavior didn't have significant relation to health-related quality of life, but better oral health status showed better health-related quality of life(p<0.01). Conclusions: In conclusion, this study suggested that there was close relationship between the oral health status and health-related quality of life in moddle aged people. Therefore, national oral health policy is needed for the oral health promotion with commitment of oral prophylaxis and care programs to the individual and community.
  • 4.

    Psychological state of the patients according to skeletal class Ⅲ malocclusion symptoms

    김선옥 | Jin MI Young | Byeng Chul Yu | 2015, 15(2) | pp.205~216 | number of Cited : 0
    Abstract PDF
    Objectives: The purpose of the study is to investigate the psychological state of the patients according to skeletal class Ⅲ malocclusion symptoms. Methods: The subjects were 200 skeletal class Ⅲ malocclusion patients. The questionnaire consisted of general characteristics, clinical manifestation, and T score of Korean version of self-rated Symptom Checklist-90-Revision modified by Jae-hwan Kim. The data were analyzed using SAS version 9.2 and t-test, ANOVA, and ANCOVA were used. Clinical manifestation included subjective recognition and radiological analysis. The subjective recognition of the patients consisted of self-satisfaction of the appearance, phonation, mastication, and temporomandibular joint pain. T score consisted of somatization, obsessive-compulsive, interpersonal sensitivity, depression, anxiety, hostility, phobic anxiety, paranoid ideation, and psychoticism. Results: The most serious factor in 9 scales was the severe TMJ pain by ANCOVA. Male patients had a higher T score in phobic anxiety, psyochoticism, somatization and depression than female patients. Those having low appearance satisfaction had the problem in interpersonal sensitivity. Obsessive-compulsive symptoms were conspicuous in phonation difficulty and temporomandibular pain. Conclusions: The patients with skeletal class Ⅲ malocclusion have more satisfaction with appearance, pronunciation, and phonation than those with skeletal class Ⅲ malocclusion and overjet. Proper dental treatment will improve the communication and quality of life.
  • 5.

    Perceived oral health awareness in dementia and dementiasuspected depending on KMME

    김은숙 | MINHEE HONG | 2015, 15(2) | pp.217~223 | number of Cited : 7
    Abstract PDF
    Objectives: The purpose of this study is to investigate cognitive function, performance of activities of daily living, and recognition on oral health with the cognitive function testto dementia or dementia-suspected patients in the outpatients. Methods: The subjects were 94 dementia or dementia-suspected patients visiting C University hospital for the dementia test. Study instruments included Korea Mini–Mental State Examination KMMS, The Bayer-Activities of Daily Living Scale; B-ADL, Seoul-Instrumental Activities of Daily Living; S-IADL, Global Deterioration Scale; GDS, Korean Dementia Screening Questionnaire; KDSQ, and underlying diseases. Results: Dementia or dementia-suspected patients were 42 by KMMSE test, 25 patients had impaired functioning of daily living by B-ADL test, 27 patients showed the presence of depression by GDS test, and 45 patients showed impaired functioning of daily living. There was a statistically significant difference in the subjective recognition on oral health conditions. There was a statistically significant difference in the subjective recognition on oral health conditions by ADL. There was a positive correlation between the cognitive function and ADL performance. Higher cognitive function is proportional to ADL performance. Conclusions: The cognitive function was closely associated with ADL and subjective oral health conditions.
  • 6.

    Influencing factors on functional, psychological, and aesthetic satisfaction in dental prosthetic treatment

    최다혜 | KyeongHee Lee | 2015, 15(2) | pp.225~233 | number of Cited : 2
    Abstract PDF
    Objectives: The purpose of this study was to investigate the quality improvement of dental prosthetic treatment and better dental service for the patients. Methods: A self-reported questionnaire was completed by 320 users of dental prosthesis in Seoul and metropolitan area from April to June, The questionnaire consisted of 4 questions of general characteristics, 5 questions of dental prosthesis treatment, 5 questions of functional satisfaction, and 6 questions of psychological and aesthetic satisfaction by Likert 5 scale. Cronbach’s alpha was o.691 in functional satisfaction and 0.716 in psychological and aesthetic satisfaction. Except 18 incomplete answers, 302 data were analyzed. Results: The functional satisfaction mean was 3.70±0.51 and that of psychological⋅aesthetic satisfaction was 3.60±0.48. Monthly income was the most important influencing factor on full and partial prosthesis use. Conclusions: In order to improve the satisfaction level in dental prosthetic treatment, the insurance coverage for the dental prosthetic treatment is necessary. The palliative supportive measure for the prosthesis is also required.
  • 7.

    Influencing factors on oral health behavior and dental clinic use in industrial workers by Andersen model

    임애정 | 허윤민 | 김형주 and 1other persons | 2015, 15(2) | pp.235~243 | number of Cited : 3
    Abstract PDF
    Objectives: The purpose of the study is to investigate the oral health and oral health beliefs in industrial workers and to analyze the influencing factors on dental health care utilization. Methods: The subjects were 280 adults from 16 to 64 years old in Seoul and Gyeonggi from June 20 to July 31, 2014, A self-reported questionnaire was completed after receiving informed consent. The independent variables consisted of predisposing, enabling, and need factors. The predisposing factors included gender, age, residence area, number of family. The enabling variables included monthly income, education, occupation, type of employment. The need factors included subjective oral health recognition and oral health belief model. These three variables had a direct and indirect influence on dental clinic use. The types of occupation were classified into desk duties, merchandizing and service duties technology and others by KSCO-6. Results: The relating factors to dental health care utilization were sex, oral health beliefs perceived benefits, perceived barriers, and self-efficacy. Female tended to have the higher oral health beliefs perceived benefits, perceived barriers(p<0.01), self-efficacy(p<0.05). Conclusions: Those who received frequent oral examination and health instruction tended to have a favorable impact on maintenance of oral health status and improvement in quality of life.
  • 8.

    The oral health awareness and oral health care provided by workers in long-term elderly care facilities

    Park Jeong Ran | MINHEE HONG | Yu-Ri Choi | 2015, 15(2) | pp.245~251 | number of Cited : 5
    Abstract PDF
    Objectives: The purpose of this study is to evaluate the oral health awareness and oral health care provided by workers in the long-term elderly care facilities. Methods: A self-reported questionnaire was completed by 213 workers in long-term elderly care facilities. The questionnaire consisted of general characteristics, oral health awareness, oral health behavior, oral health knowledge, oral health care professionals, oral health care, oral health care improvement, and denture care. Except the incomplete answers, 200 data were analyzed by the statistical software of SPSS WIN 18.0. Results: Highly educated people tended to have higher oral health awareness. The workers in the facility maintained the oral health care but they suggested that dental professionals are needed. Conclusions: It is necessary to suggest the oral health care management by dental professionals.
  • 9.

    Oral health behavior according to oral health education experience in the elementary school teachers

    Lee Jung Hwa | Ryu, Hae Gyum | 2015, 15(2) | pp.253~259 | number of Cited : 0
    Abstract PDF
    Objectives: The purpose of this study was to investigate the oral health behavior according to oral health education experience in the elementary school teachers and to provide the basic data for the development of oral health education program. Methods: A self-reported questionnaire was filled out by 239 elementary school teachers in Busan and Ulsan from May 7 to 31, 2013. The questionnaire consisted of general characteristics of the subjects, use of oral health devices, dental clinic visit within a year, purpose of dental clinic visit, subjective oral health condition, place and contents of oral health education, future contents of oral health education, purpose of tooth brushing, recognition of sealant, recognition of dental caries prevention effect of fluoride, and method and frequency of tooth brushing. Data were analyzed by Predictive Analysis Software(PASW) Statistics 19.0Ⓡ(SPSS Inc., Chicago IL, USA). Results: Of the 239 teachers, 187 teachers had oral health education experience and 52 did not. Those who had oral health education experience reported higher scores in tooth brushing than those who did not. 59.4% of the respondents answered the experience of oral health education in dental clinics. Conclusions: Oral health behavior was different from the experience of oral health education in the elementary school teachers. The teachers are the most important persons influencing on the right tooth brushing habit in the students. So the teachers must take the continuing and systematic oral health education.
  • 10.

    Correlation and influencing factors on oral health awareness, oral health behavior, self-esteem and OHIP-14 in childcare teachers

    Lee, Sunglim | kwag jung suk | Choi, Jeonghee | 2015, 15(2) | pp.261~269 | number of Cited : 6
    Abstract PDF
    Objectives: The purpose of the study is to investigate the correlation and influencing factors of oral health awareness, oral health behaviors, self-esteem and OHIP-14. Methods: A self-reported questionnaire was filled out by 313 childcare teachers in Jeonnam from June 4 to 14, 2013. The questionnaire consisted of 3 questions of general characteristics, 4 questions of occupation, 1 question of oral health education experience, and 1 question of oral health education participation. The instrument for awareness and behavior of oral health were modified and consisted of 10 questions of awareness and 10 questions of behavior by Likert 5 scale. Cronbach's alpha was 0.718 in awareness and 0.812 in behavior. Instrument for self-esteem was modified from Rosenberg. Self-esteem questionnaire consisted fo 5 questions of positive answers and 5 questions of negative answers by Likert 5 scale. Cronbach's alpha in self esteem was 0.846 in the study. Oral Health Impact Profile-14(OHIP-14) was adapted from Slade by Likert 5 scale and consisted fo 14 questions. Cronbach’s alpha was 0.934 in the study. Data were analyzed by chi square test, t-test, one way ANOVA, Scheffe multiple range test, Pearason's correlation test, and stepwise multiple regression test. Results: There were positive correlations between oral health awareness, oral health behavior(r=0.502), and self-esteem(r=0.332), but negative correlations with OHIP-14. Oral health behavior showed positive correlations with self-esteem(r=0.230). The factors on oral health awareness were high oral health behavior and self esteem, low OHIP-14, and active participation in education. Self-esteem was closely related to high with high oral health awareness. low OHIP-14, low job satisfaction. Conclusions: Childcare teachers play the very important roles in the development of oral health education program for children and continuous education.
  • 11.

    Evaluation of community water fluoridation program on dental caries prevention in Ulsan

    Min-Ji Kim | 안세호 | 한동헌 and 4other persons | 2015, 15(2) | pp.271~278 | number of Cited : 0
    Abstract PDF
    Objectives: The aim of this study was to investigate the effect of water fluoridation program(WFP) on dental caries prevention in Ulsan, Korea. Methods: The data of control group were extracted from 2012 Korean National Oral Health Survey(KNOHS). Since 1998, WFP was implemented in Ulsan. The subjects were 670 subjects including 10 to 12-years old children in 2009. The control subjects were 4,871 people in non-fluoridated metropolitan cities comparable to Ulsan. The control subjects were selected from 2012 KNOHS. A self-reported questionnaire was completed by the variables including oral health behaviors on daily frequency of toothbrushing, eating snacks and beverages. Oral health examination was carried out by two dentists who received a training in KNOHS with an inter-examiner-agreement. Caries preventive fraction was calculated by the difference of DMFT and DMFS index. The preventive effects of the WFP program were focused on gender, number of fissure sealed teeth, daily frequency of toothbrushing, eating snacks and beverages. Data were analyzed using SPSS 19.0®(SPSS Inc., Chicago, IL, USA) statistical package. Results: DMFT indices of 12-year-old subjects(n=670) in WFP and control population(n=4,871) were 2.11 and 1.23, respectively with an estimated prevention effect of 41.7%. Conclusions: WFP in Ulsan reduced the prevalence of dental caries. WFP should be recommended for the public oral health program in other metropolitan cities.
  • 12.

    Correlations of self-esteem, major satisfaction and career identity in dental hygiene students

    박경화 | 최혜정 | 2015, 15(2) | pp.279~286 | number of Cited : 19
    Abstract PDF
    Objectives: The purpose of the study is to investigate the factors influencing on self-esteem, major satisfaction, and career identity. Methods: A self-reported questionnaire was filled out by 389 dental hygiene students in three colleges located in Metropolitan area. The questionnaire consisted of 5 questions of general characteristics, 10 questions of self-efficacy, 18 questions of major satisfaction, and 13 questions of career identity by Likert 5 scale. Cronbach’s alpha was 0.92 in self-efficacy, 0.90 in major satisfaction, and 0.88 in career identity in the previous studies. Cronbach’s alpha in this study was 0.911 in major satisfaction, 0.840 in self-efficacy, and 0.8090 in career identity. The data were analyzed using descriptive statistics, independent t-test, one-way ANOVA, and stepwise multiple regressions. Results: The score was 3.47 in self-esteem, 3.79 in major satisfaction, and 3.03 in career identity. There were significant differences in self-esteem and major satisfaction based on grade, motivation for entering college, and clinical practice satisfaction. In case of career identity, there were significant differences based on characteristics, motivation for college choice, and clinical practice satisfaction. There was a positive correlation between negative self-esteem, positive self-esteem, general satisfaction, awareness satisfaction, curricula satisfaction, interpersonal relation satisfaction, and career identity. The influencing factors on career identity were aptitude, interest, self-esteem, and major satisfaction in order(p<0.001). Conclusions: The career identity is closely related to self-esteem and major satisfaction. It is desirable to open a variety of education courses and to develop systematic and practical programs to the students in order to improve the career identity.
  • 13.

    Influence of achievement motivation and self concept on clinical practice satisfaction in the dental hygiene students

    Choi, Jeonghee | 고은경 | Lee, Sunglim | 2015, 15(2) | pp.287~293 | number of Cited : 4
    Abstract PDF
    Objectives: The purpose of this study was to investigate the influence of achievement motivation and self concept on clinical practice satisfaction in the dental hygiene students. Methods: A self-reported questionnaire was filled out by 206 dental hygiene students in Jeonnam from December to October, 2013. The questionnaire consisted of 6questions of general characteristics, 6 questions of achievement motivation, 18 questions of self concept, and 23 questions of clinical practice satisfaction. Cronbach’s alpha was 0.881, 0.889, and 0.935 in achievement motivation, self concept, and clinical practice satisfaction, respectively. The data were analyzed by t-test, one way ANOVA, Pearson correlation coefficient and multiple regression analysis. Results: Clinical practice satisfaction showed a significant difference by grade(p<0.05), personality(p<0.05) and satisfaction of major(p<0.01). Clinical practice satisfaction had a positive correlation with achievement motivation(r=0.508, p<0.01) and self concept(r=0.324, p<0.01). Multiple logistic regression analysis revealed that clinical practice satisfaction was related with achievement motivation(p<0.05) and self concept(p<0.01). Conclusions: The clinical practice satisfaction depends on achievement motivation and self concept. It is necessary to develop the program to improve satisfaction level of clinical practice by achievement motivation and self concept.
  • 14.

    Effect of gender role identity on choice of dental hygiene and professionalism

    김선영 | Kim Yun Jeong | moonsangeun | 2015, 15(2) | pp.295~301 | number of Cited : 3
    Abstract PDF
    Objectives: The objective of this study was to investigate the effect of gender role identity on major choice, and preference and choice of job for applicants of dental hygiene department. Methods: The subjects were 202 high school girl students visiting K university in October, 2014 and in January, 2015 for the interview of early and regular admission to the university. The questionnaire consisted of 3 questions of general characteristics of the subjects, 40 questions of gender role identity, and 6 questions of career choice factors. Gender role identity included 15 questions of masculinity, 15 questions of feminity, and 10 questions of neutral gender using instrument of Kim by Likert scale. Cronbach’s alpha of masculinity, feminity, and neutral gender was 0.810, 0.762, and 0.801 respectively. The data were analyzed using χ2-test with SPSS Win 12.0. Results: The effects of gender role identity on major choice and professionalism were as follows. In major choice motivation, psychological type, feminity type and masculinity types selected aptitude, professional sustainability and recommendation by acquaintance in order, but undifferentiated type selected aptitude, recommendation by acquaintance and professional sustainability in order. There was a statistically significant difference(p<0.05). In major choice information, psychological, feminity and undifferentiated types prefer indirect experience but masculinity type prefers direct experience. There was a statistically significant difference(p<0.05) In job selection, psychological, feminity and undifferentiated types want to do assistant works rather than oral health prevention and education. Masculinity type want to do oral health prevention and education rather than assistant work. There was a statistically significant difference(p<0.001). Conclusions: The gender role identity affected the factors related to choice of major and job in dental hygiene major applicants. It is necessary to provide the career choice program for the high school students by personality types and gender role identity types.
  • 15.

    Effects of cooperative learning on learning attitude and self-directed learning capability of learners

    박인숙 | Jung Eun Ju | 2015, 15(2) | pp.303~310 | number of Cited : 0
    Abstract PDF
    Objectives: The purpose of this study was to examine the influence of cooperative learning on the learning attitude and self-directed learning capability of learners. Methods: The subjects were 50 sophomores enrolled in cooperative learning for 12-week period from March to June, 2014. A self-reported questionnaire was completed by the subjects. The instruments were 16 questions of learning attitude, 32 questions of self-directed learning, academic achievement, and 12 questions of satisfaction with instruction by Likert 5 scale. Cronbach’s alpha was 0.84 in the previous study and 0.78 in this study. Self-directed learning was modified by Yoo and Cheong. Cronbach’s alpha of self-directed learning was 0.86 in this study. Academic achievement was assessed by before and after the cooperative learning class. Cronbach’s alpha was 0.95 in this study. Their learning attitude and self-directed learning capability were evaluated before and after the cooperative learning, and their satisfaction with the instruction and academic achievement were assessed by the written examination. Results: The score of learning attitude increased from 2.89 in the pretest to 3.38 in the posttest. The self-directed learning of the students increased from 2.98 in the pretest to 3.48 in the posttest. The academic achievement of students also increased from 82.0 in the pretest to 85.2 in the posttest. The satisfaction with instruction was 4.24 of Likert 5 scale. There were significant differences in satisfaction with instruction, cooperative learning and academic achievement. Conclusions: It is important to develop the cooperative learning program linked to self-directed learning for the dental hygiene students continuously. This study will provide the basic data and information for the development of new teaching methods for the dental hygiene.
  • 16.

    The effects of xylitol and sorbitol mouth rinse on caries activity

    Lee Seunghun | Sakong Joon | 2015, 15(2) | pp.311~317 | number of Cited : 0
    Abstract PDF
    Objectives: The purpose of this study was to identify the effects of xylitol and sorbitol mouth rinse on the salivary caries activity levels. Methods: The study subjects were 38 female college students in Gyeongju, Korea. The subjects visited the institution once a week for 4 weeks and the saliva samples were measured for the amount of salivary caries activity levels. The saliva was collected 5 times and incubated in Mitis Salivarius Agar for 48 hours(VS-1203P3L, Vision, Korea) and measured. Results: The Streptococcus mutans CFU decreased by statistically significant amounts as compared to before the experiment within the xylitol group and the sorbitol group(p<0.01). After three weeks of mouth rinse application, Streptococcus mutans CFU of the xylitol group and the sorbitol group showed statistically significant differences(p<0.05). The salivary flow rates within the xylitol group and sorbitol group increased by statistically significant amounts(p<0.01) than before the test. The change in the salivary buffering capacity decreased by a statistically significant amount as compared to before experiment within the xylitol group(p<0.01). Conclusions: The salivary caries activity levels decreased after using xylitol and sorbitol mouth rinse in CFU and the flow rate. The buffering activity levels increased within the xylitol group. Further follow-up studies would be necessary to identify the various effects of xylitol.
  • 17.

    Oral environmental change in the natural oral cleaner containing propolis

    최우양 | 이지연 | Hwa-Young Jung and 2other persons | 2015, 15(2) | pp.319~324 | number of Cited : 2
    Abstract PDF
    Objectives: The purpose of this study was to verify the oral environmental change in using the natural oral cleaner containing propolis and prevention effect of oral disease. Methods: The subjects were 60 university students in Gangwon province. The groups consisted of 30 students of experimental group and 30 students of control group. The subjects were those who did not take the antipsychotic, diuretic, antihistamine, and anesthetic. The students rinsed their mouth with propolis mixture of oral cleanser for 4 weeks after receiving informed consent from October 1 to November 2, 2012. Collected saliva was measured for amount, salivary consistency, pH, plague index, gingival index, and halitosis. Results: The amount of salivary in propolis mixture of oral cleansing group remarkably increased (t=2.16, p<0.05). pH was alkaline in the group with oral cleaner containing the propolis (t=2.80, p<0.01). The bad breath remarkably decreased in the group with oral cleaner containing the propolis (t=-5.77, p<0.001). Conclusions: The use of the oral cleaner containing the propolis increased the amount of salivary and pH. The use of oral cleaner containing the propolis reduces halitosis and maintains good quality of oral hygiene.
  • 18.

    Tooth whitening maintenance efficacy of dentifrices containing several active ingredients in vitro and in vivo

    안재현 | 김지혜 | 김종훈 | 2015, 15(2) | pp.325~332 | number of Cited : 6
    Abstract PDF
    Objectives: The purpose of this study was to investigate tooth whitening maintenance efficacy of several dentifrices containing effective ingredients for tooth whitening. Methods: Hydroxyapatite specimens(HAPs) staining was done by using modified Stookey’s methods. HAPs were treated with 2.9% hydrogen peroxide containing strip for whitening, and were shaken with several dentifrice slurry(dentifrice 1 : artificial saliva 2) for 30 minutes. The HAPs were finally dipped in staining solution for an hour. Shaking and dipping were repeated 4 times and lightness values were measured by colorimeter at each step. In clinical test, test 4 dentifrice and control dentifrice were evaluated by 21 subjects for 2 months after receiving institutional review board(IRB) approval. Organoleptic(vita shade guide) and instrumental(SHADEEYENCC) evaluation were performed for whiteness change of teeth. Statistical analysis was performed using repeated measures ANOVA, Tukey's post hoc test and χ2-test(p<0.05). Results: All dentifrices showed statistical significance in comparison with control dentifrice containing sodium fluoride and test 4 dentifrice containing sodium pyrophosphate, sodium metaphosphate, candelilla wax, and sodium fluoride showed statistical significance in comparison with other dentifrices by inhibiting staining in vitro(p<0.05). In clinical test, test 4 dentifrice showed better effects than control dentifrice in organoleptic and instrumental evaluation in tooth whitening maintenance efficacy(p<0.05). The awareness toward tooth whitening maintenance efficacy for 2 months use showed that test 4 dentifrice was much better than control dentifrice, but did not show statistically significant(p>0.05). Conclusions: Dentifrice containing sodium pyrophosphate, sodium metaphosphate, candelilla wax and sodium fluoride was more effective in keeping teeth white.
  • 19.

    Oral health related quality of life according to firefighters' job characteristics

    황세현 | 김성애 | Ji-Young Lee and 4other persons | 2015, 15(2) | pp.333~342 | number of Cited : 4
    Abstract PDF
    Objectives: The purpose of the study was to investigate the oral health related quality of life according to work factors of firefighters in Korea. Methods: A self-reported questionnaire was completed by 270 firefighters in Changwon, Gimhae, and Ulsan from June 27 to July 24, 2011 after receiving informed consent. The questionnaire consisted of 5 questions of general characteristics of the subjects, 6 questions of job-related characteristics, and 14 questions of oral health related quality of life(OHIP-14). Data analysis was performed with reliability test, descriptive analysis, t-test, analysis of variance(ANOVA) and multiple regression analysis using SAS(version 9.2) program. Results: The score of oral health related quality of life in firefighters was 10.1±8.0. The scores of subscale of the oral health quality of life were 2.4±1.5 in physical pain, 1.8±1.5 in psychological discomfort, 1.5±1.5 in physical disability, 1.4±1.5 in functional limitation, 1.3±1.4 psychological disability, 0.9±1.3 in handicap, and 0.7±1.3 in social disability. The related factors of oral health quality of life in firefighters were rank(p=0.016) and the frequency of daily mobilization(p=0.029). Conclusions: Oral health related quality of life in firefighters was relatively in good condition. For the better oral health related quality of life in firefighters, it is important to establish the continuing oral health promotion program for those who have irregular job characteristics and job intensity.
  • 20.

    Comparison of liberal arts curricula between three year and four year dental hygiene departments in Korea

    Won Bok-Yun | Jang Gye Won | Mi-Yeong Hwang and 1other persons | 2015, 15(2) | pp.343~352 | number of Cited : 3
    Abstract PDF
    Objectives: The purpose of this study was to compare the liberal arts curricula of domestic 3 year and 4 year dental hygiene departments and to obtain the basic data for the development of a standardized dental hygiene curriculum. Methods: The liberal arts curricula of fifteen 3 year and 4 year dental hygiene departments in Korea and other countries were analyzed. A survey was conducted on 801 selected dental hygiene majors from December 8 to 12, 2014. A self-reported questionnaire was completed by 750 dental hygiene students and 150 dental hygiene professors. The questionnaire consisted of 5 questions of general characteristics and 13 questions including curricula change, usability of curricula, awareness of the suitability of dental hygiene curricula, and validity of curricula. Cronbach’a alpha was 0.71 in this study. Results: The grade point average in the liberal arts courses in Korean 4 year dental hygiene departments were 29, which was higher than that in 3 year dental hygiene departments of 13.2. There were large disparities among the colleges in the credits of these courses. The most common liberal arts courses in 4 year dental hygiene departments were foreign languages, man, society and communication, and natural science. In 3 year dental hygiene departments, English and foreign languages were the most common courses, followed by computer, man and society, philosophy and ethics. Foreign languages were considered to be the liberal arts course that should be most strengthened according to the job environment change of dental hygienist in globalizing society, followed by social psychology and pedagogy. Conclusions: Liberal arts courses were offered in the 4 year dental hygiene departments than in the 3 year dental hygiene departments in Korea, but there were a great deal of differences between colleges. The preparation of standardized guidelines on liberal arts courses are necessary. Liberal arts courses should support the performance skill and knowledge of the dental hygienists.