• 대한치과기공학회지
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• 제13권1호
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• pp.79-97
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• 1991

To improve the management of dental laboratory through the research on the actual condition, this study posed questions on 36 dental laboratories. The results are as follows : 1. The establishment of dental laboratory in Chunbuk was increased between in 1980 and 1986. Especially it has been more increased since 1989. According to the proportion of population the number of the dental laboratories in Chunbuk was much more than that of other provinces and took the first place in september 1990. 2. The ratio between the unlicensed dental technician and the licensed was 24.83% and 67.11% each . The former must be replaced by the licensed. And the latter ought to try to improve their culture and technique. 3. Overtime payment must be paid for those who work above eight hours. 4. It takes 5 days at a minimum for the production of dental prosthesis with both stability and esthetics. 5. Every Saturday afternoon, Sunday and national holiday must be free. 6. Bonus must be paid 600% a year at a minimum. The system of retirement allowance should be active. All dental technicians ought to be affliated with their labor union and medica insurance. 7. Such dental restoration as porcelain and crown and bridge prosthesis must by increased to a degree between 30% and 50% at a minimum and the reduction system of charge for a dental technique has to be abolished. 8. The general working conditions of dental laboratory, especially pay and working hour must be improved. 9. To advance the service improvement of dental treatment and the banishment of illegal one, the medical insurance of crown and bridge prosthesis must be generally practised. 10. Ill case of the staff cull:lloyulent of dental laboratory, minimem wage system must be observed. 11. Directing dentist system on the ertablisment of dental laboratory must be abelished or wholly improved.

• 대한치과보철학회지
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• 제55권1호
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• pp.38-45
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• 2017

엇갈린 교합을 가진 가철성 국소의치에서는 하중시 의치의 다양한 움직임과 불리한 안정으로 인해 환자의 만족감을 얻는 것이 어렵다. 편측 소수 잔존치 증례에서는 안정적인 양측성 지지를 확보하기 위해 임플란트 식립 또는 잔존치근을 이용한 추가적인 치료가 필요하다. 그러나, 본 증례에서는 고혈압, 협심증, 고령 등의 전신질환을 고려하여 가철성 국소의치를 치료방법으로 선택하였다. 엇갈린 교합으로 인해 수직고경이 상실된 환자에게 수직고경을 회복해 주기 위해서 정확한 진단과 분석이 필수적이며, 근신경계에 대한 적응을 파악해야만 수직고경을 회복해 줄 수 있다.

• Journal of Periodontal and Implant Science
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• 제52권5호
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• pp.411-421
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• 2022

Purpose: In this study, we aimed to evaluate the degree of heat generation when a novel drill design with an irrigation slot was used with metal sleeve-free (MF) and metal sleeve-incorporated (MI) surgical guides in an environment similar to that of the actual oral cavity. Methods: A typodont with a missing mandibular right first molar and 21 bovine rib blocks were used. Three-dimensional-printed MF and MI surgical guides, designed for the placement of internal tapered implant fixtures, were used with slot and non-slot drills. The following groups were compared: group 1, MI surgical guide with slot drill; group 2, MI surgical guide with a non-slot drill; and group 3, MF surgical guide with a slot drill. A constant-temperature water bath at 36℃ was used. The drilling was performed in 6 stages, and the initial, highest, and lowest temperatures of the cortical bone were measured at each stage using a non-contact infrared thermometer. Results: There were no temperature increases above the initial temperature in any drilling procedure. The only significant difference between the non-slot and slot groups was observed with the use of the first drill in the MI group, with a higher temperature in the non-slot group (P=0.012). When the heat generation during the first and the second drilling was compared in the non-slot group, the heat generation during the first drilling was significantly higher (P<0.001), and there was no significant difference in heat generation between the drills in the slot group. Conclusions: Within the limitations of this study, implant-site preparation with the surgical guide showed no critical increase in the temperature of the cortical bone, regardless of whether there was a slot in the drill. In particular, the slotted drill had a cooling effect during the initial drilling.

• 치위생과학회지
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• 제11권4호
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• pp.293-297
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• 2011

치과위생사 직업명칭에 대한 인지도를 파악하기 위해 경기도 평택시에 소재하는 한 고등학교의 재학생 중 각 학년별로 70명씩 할당추출을 하여 총 210명을 대상으로 자기기입식 설문조사를 실시하였다. 일반적 특성 및 치과진료경험에 따른 인지도와 다른 보건의료직종 직업명칭 인지도 등을 빈도분석, 교차분석, 로지스틱 회귀분석 등에 의해 분석한 결과 다음과 같은 결론을 얻었다. 1. 일반적 특성 중 여학생은 19.3%가 치과위생사 직업명칭을 인지하고 있으나, 남학생의 인지율은 5.7%에 불과하였다(p=0.006). 학년에 따른 차이는 나타나지 않았다. 자연계 학생들의 인지율은 24.2%로서 인문계 학생들의 인지율(14.3%)보다 높았다(p=0.037). 치과진료경험, 치과정기검진, 구강보건교육 경험 등에 따른 차이는 나타나지 않았다. 2. 보건의료직종 중 직업명칭에 대한 인지도는 간호사가 가장 높고(93.8%), 치과의사(78.1%), 물리치료사(52.4%), 간호조무사(15.7%), 치과위생사(14.8%), 치과기공사(12.9%), 방사선사(10.0%), 임상병리사(3.3%), 작업치료사(1.0%) 순으로 나타났다. 조사대상자 중 '치과위생사'라고 정확하게 기재한 학생은 8명(3.8%)에 불과하였고, 23명(11.0%)이 '치위생사'라고 응답하였다. 3. 치과위생사 직업명칭 인지에 영향을 미치는 요인을 알기 위해 이분형 로지스틱 회귀분석을 실시한 결과 성별(Wald=4.287, p=0.038)과 임상병리사(Wald=7.016, p=0.008) 및 물리치료사(Wald=12.630, p<0.001) 직업명칭 인지 여부가 통계적으로 유의한 관련이 나타났다. 결론적으로, 치과위생사라는 직업명칭에 대한 인지도는 간호사, 치과의사, 물리치료사 등 다른 보건의료직종에 비해 매우 낮은 수준이며, 치과위생사에 대한 직업인지도를 높이기 위한 다각적인 노력이 필요하다는 점을 시사하고 있다.

• 한국치위생학회지
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• 제9권3호
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• pp.282-293
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• 2009

The purpose of this study was to examine the degree of infection control implemented at dental offices and factors affecting it in an attempt to help promote the health of dental health care workers. The subjects in this study were 180 medical personnels who worked at dental offices in the region of South Jeolla Province. A self-administered survey was conducted from April 1 to May 30, 2008, and the collected data were analyzed. The findings of the study were as follows: 1. As for the implementation of infection control at the dental offices, what the health care workers investigated did the most was post-treatment hand washing(95.0), a constant separation of infectious wastes(94.4), wearing rubber gloves all the time during medical instrument cleansing(92.8) and pre-treatment hand washing(91.7). 2. In regard to the implementation of infection control at the dental offices, what the dental personnels did the least was drying their hands with air(5.0), wearing goggles in times of treatment(23.3), receiving regular education on infection control(26.7) and putting sterilizers to a performance test on a regular basis(43.9). 3. The dental health care workers were significantly different according to age in the management of contagious diseases(p=0.005). Their career made a significant difference to the management of contagious diseases(p=0.000) and instrument cleansing/sterilization(p=0.043). The service area made a significant difference to wearing and managing personal protective clothes (p=0.040) and waste management(p=0.040). 4. Concerning the relationship between the acquisition of dental hygienist certificate and the practice of infection control, whether the dental health care workers were certified or not made no significant difference to that. 5. As to the correlation among the factors affecting the prevention and management of contagious diseases, there was a positive correlation among hand washing(r=0.379), wearing and managing personal protective clothes(r=0.349), instrument cleansing/sterilization(r=0.323) and waste management(r=0.388). All the factors made a statistically significant difference to the prevention and management of contagious diseases(p<0.01).

• The Journal of Advanced Prosthodontics
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• 제5권4호
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• pp.471-478
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• 2013

PURPOSE. The aim of the study was to evaluate the effect of annealing on the nanostructure and hardness of Co-Cr metal ceramic samples that were fabricated with a direct metal laser sintering (DMLS) technique. MATERIALS AND METHODS. Five groups of Co-Cr dental alloy samples were manufactured in a rectangular form measuring $4{\times}2{\times}2$ mm. Samples fabricated by a conventional casting technique (Group I) and prefabricated milling blanks (Group II) were examined as conventional technique groups. The DMLS samples were randomly divided into three groups as not annealed (Group III), annealed in argon atmosphere (Group IV), or annealed in oxygen atmosphere (Group V). The nanostructure was examined with the small-angle X-ray scattering method. The Rockwell hardness test was used to measure the hardness changes in each group, and the means and standard deviations were statistically analyzed by one-way ANOVA for comparison of continuous variables and Tukey's HSD test was used for post hoc analysis. P values of <.05 were accepted as statistically significant. RESULTS. The general nanostructures of the samples were composed of small spherical entities stacked atop one another in dendritic form. All groups also displayed different hardness values depending on the manufacturing technique. The annealing procedure and environment directly affected both the nanostructure and hardness of the Co-Cr alloy. Group III exhibited a non-homogeneous structure and increased hardness ($48.16{\pm}3.02$ HRC) because the annealing process was incomplete and the inner stress was not relieved. Annealing in argon atmosphere of Group IV not only relieved the inner stresses but also decreased the hardness ($27.40{\pm}3.98$ HRC). The results of fitting function presented that Group IV was the most homogeneous product as the minimum bilayer thickness was measured (7.11 ${\AA}$). CONCLUSION. After the manufacturing with DMLS technique, annealing in argon atmosphere is an essential process for Co-Cr metal ceramic substructures. The dentists should be familiar with the materials that are used in clinic for prosthodontics treatments.

• Asian Pacific Journal of Cancer Prevention
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• 제16권16호
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• pp.6987-6990
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• 2015

Background: Oral cancer is one of the most prevalent cancers and one of the top ten causes of death in the whole world. Most oral cancers are diagnosed at late stages. Since dentists play a critical role in early detection of oral cancer, they should be knowledgeable and skillful in oral cancer diagnosis. The aim of this study was to survey dentist knowledge about oral cancer in Southern Khorasan Province. Materials and Methods: This descriptive, cross-sectional study was conducted with dentists who participated in an in-service educational program at the Faculty of Dentistry of Birjand University of Medical Sciences in spring 2014. A questionnaire including demographic information with 11 questions regarding oral cancer was prepared. The participants were required to be complete the questionnaires within a specific time span. The data were analyzed using SPSS 15 software by t-test and one-way ANOVA at 0.05 confidence level. Results: A total of 73 dentists out of 80 answered the questionnaires - 36 (49.3%) were females and 37 (50.7%) were males. Total mean score of knowledge was $7.91{\pm}1$ of 11. Mean scores of knowledge of male and female participants were $7.70{\pm}1.83$ and $8.13{\pm}1.94$ respectively. Mean knowledge score of general dentists was $7.41{\pm}1.79$ and of dental specialists was $9.44{\pm}1.0$ In spite of higher knowledge score of women compared to men and general dentists compared to dental specialists, these differences were not statistically significant (p=0.09). Tukey testing showed a significant difference between groups with 1-4 years of experience (8.74) and over twenty years of experience (6.50) ( p=0.001). Conclusions: Considering the good knowledge level of young dentists and the specialists and the importance of early diagnosis of oral cancer, it seems necessary to pay more attention to academic education for dentistry students, as well as holding retraining courses for experienced dentists, so that their knowledge not be reduced over time.

• 한국치위생학회지
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• 제12권1호
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• pp.103-111
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• 2012

Objectives : The purpose of this study was to survey the recognition of college-preparatory students who interested and prevented themselves in oral health diseases for dental hygienist in Yeungnam South Korea. Methods : The subjects in this study were 328 students who was seriously worried for career and entrance into a school. The survey period was from August 16th 2011 to November 26th 2011, and the data was collected from the high school students in Yeungnam and the preparatory students who visited S college in Gyeongju. This study was conducted by using the self-reported questionnaire. Results : The result of this study are as follows. 87.2% of the subjects have recognized about the name of dental hygienist, 51.5% have distinguished dental hygienist in the clinic, and 67.4% have recognized about education of dental hygienist that was more than a college graduate. The received services from dental hygienist was scalling(15.6%), assistant of treatment(14.7%), tooth brushing instrument(11.5%), Reception & receipt(11.0%), and etc. The majority of the subjects have recognized that dental hygienist was the professional(4.82 points), the important role in oral health(4.88 points), and the intermediary between patients and dentists(4.60 points). And they were friendly(4.64 points), responsible(4.81 points), and worthwhile job(5.01 points). However their appellation has not been established yet(4.00 points), they was difficult to distinguish from nursing assistants(4.37 points), and their task did not differs from AN(4.53 points). Also they compared to other job was not stressful job(3.58 points). Conclusions : Refer to these results, those will be the basis for professional development and status establish of clinical dental hygienists and for the upright role as a professional medical personnel of dental hygiene students. In addition, those will help to patients in the future, and become an effective instrument to learn knowledge, skill, and service that needed to conduct business.

• 한국치위생학회지
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• 제13권5호
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• pp.819-826
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• 2013

Objectives : The purpose of this study was to analyze the types of dental emergencies. This study was carried out for dental trauma patients visiting the emergency room in H hospital from 2005 to 2006. Methods : Subjects were 252 patients. Demographic characteristics consisted of age, gender, dentition, and dental related injury. Results : Male patients had 1.65 times higher tooth injury than female. Teenagers had higher prevalence of tooth injury. Main cause of dental injury was falling down. Young children accounted for 41.7% of the injuries. Late evening was the highest outbreak time of injury. The most commonly affected teeth were central incisor and lateral incisor. The damage of oral soft tissue was more common than the that of alveolar bone. Main area of primary tooth loss was gingiva(10.7%), tongue or soft palate(7.5%), and frenulum(6.0%). Subluxation(28.6%) and luxation(28.6%) were main cause for the primary teeth. Tooth fracture(50.0%) were the most common injury. Conclusions : Thus, to understand the incidence, causes and patterns of dental trauma is to help preserving natural teeth. The results of this study could provide the clinical guidelines on the treatment of dental emergency patients.

• 대한통합의학회지
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• 제10권3호
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• pp.173-184
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• 2022

Purpose : The purpose of this study was two-fold: to identify the effect of dental hygienist's self-determination motivation on their job engagement and to analyze the moderating effect of compensation satisfaction that affect the relevance. Methods : Data were collected using a structured self-report questionnaire administered to 260 dental hygienists working in dental hospitals and clinics in Busan, South Korea. These were analyzed using IBM SPSS Statistics version 26.0 and SPSS Process Macro 3.5. A frequency analysis, including the respondents' general characteristics, frequency, percentages, and standard deviations, was performed. A regression analysis was also performed using SPSS Process Macro to verify the moderating effect of compensation satisfaction in the effect of self-determination motivation on job engagement. Results : The self-determination motivation of the dental hygienists had a statistically significant positive effect on their job engagement, which was the dependent variable. Higher intangible compensation satisfaction levels led to a stronger effect of intrinsic motivation but a weaker effect of extrinsic motivation on job engagement. Moreover, higher tangible compensation satisfaction levels strengthened the effect of intrinsic motivation on job engagement. Conclusion : Recently, the demand for oral health care has been increasing, Competition in the dental medical service market warrants, high-quality dental services based on accurate diagnosis and treatment. In this context, dental hygienists' job engagement must be improved. For this purpose, increasing the satisfaction of dental hygienists with self-determination motivation and appropriate compensation is effective. In addition, attention must be paid to the moderating effect of compensation satisfaction on the relationship between intrinsic motivation and job engagement. On the basis of the implications of this study, the results can be used as basic data for improving dental hygienists' welfare system and manpower management.