• 대한치과의사협회지
• /
• 제54권8호
• /
• pp.630-638
• /
• 2016

The appropriate sample size calculation in dental research is important to achieve the study purpose at the first step in study design. However, it cannot be easy to calculate sample size using standard formulas, because the several factors must be considered for calculation. This study introduced the graphic method for sample size calculation, which is called nomogram. The purpose of this study is to show the effectiveness of the nomogram using examples, expecting the researchers can easily use nomogram for sample size determination.

• 한국수정란이식학회:학술대회논문집
• /
• 한국수정란이식학회 2006년도 The 6th Intermational Symposium on Developmental Biotechnology
• /
• pp.26-27
• /
• 2006

• Journal of Oral Medicine and Pain
• /
• 제44권4호
• /
• pp.183-188
• /
• 2019

Erythema multiforme (EM) is an inflammatory immune-mediated mucosal disease. EM is classified as EM minor or EM major, depending on the severity of symptoms. Most patients with minor or major forms of EM have oral lesions. EM can occur as a result of adverse drug reactions but this is difficult to establish. Several indicators have been developed that can be used as a criterion of evaluation to ensure objectivity in identifying the causality of adverse drug reactions. The Naranjo algorithm was used in the evaluation to ensure objectivity in identifying the causality of adverse drug reactions. There were two cases of patients suspected of having EM induced by drugs. They were both assessed using the Naranjo algorithm to confirm the causality of the disease.

• 대한치과기공학회지
• /
• 제34권1호
• /
• pp.45-56
• /
• 2012

Purpose: This study reviews the recent trend of Korean Academy of dental technology research. The data examined are the articles published in the Korean Journal of Korean Academy of dental technology from 1979 to 2011. Methods: The data are retrieved through the internet database Korean Academy of dental technology. The number of paper published is 540, published in 33 volumes of the journal. This study examines research methods, subjects, and author information. Results: Among the 540 articles collected, 422 are Original papers, 106 Clinical Technical Papers, 12case Other papers. 235 are experimental studies. Most experimental studies(235) have examined the ceramic(Porcelain) parts(117). The sole author of 315, co-author of 225 appeared. In turn of dental technicians, and students appeared. Conclusion: The study is to present basic data for research and to indicate the direction of their study in the future.

• 보건의료산업학회지
• /
• 제7권4호
• /
• pp.81-92
• /
• 2013

This research was conducted to analyze the perception of the dental hygienists who work in ordinary dental clinics regading patient safety culture and to analyze the related elements. As for the research subjects and methods, 233 dental hygienists who work at the dental clinics located in Daegu, Gyeongbuk and Jeonnam were targeted from February 6, 2012 to March 5, 2012 to administer survey by utilizing patient safety culture recognition tool. Collected data was subjected to the SPSS 18.0 program to calculate average and standard deviation, and to carry out t-test, ANOVA and multiple regression analysis. Dental hygienists' level of perception towards patient safety culture was mid level, and it was demonstrated that there is a correlation with age, work experience at department, title and type of department that affect level of perception towards patient safety culture. In conclusion, Since this research targeted only a limited number of dental hygienists, it is necessary to be cautious about over-interpreting the results. Above anything, it is necessary to carry out repetitive research by targeting medical professionals of diverse jobs.

• 대한치과보철학회지
• /
• 제40권2호
• /
• pp.184-192
• /
• 2002

The purpose of this study was to investigate the abrasion resistance and surface roughness of conventional dental stones and improved dental stones and newly developed dental stones. Materials included in this study were several dental stones and newly developed dental stone; 2 type III. 6 type IV (including newly developed dental stone). 1 type V Ten specimens for each material, total ninety specimens were made. Each specimen was subjected to 50 complete cycle abrasion under constant load 0.42N at speed or 6mm per sec. The depth after abrasion test was measured for each specimen. Surface roughness before and after abrasion test was compared. The results were as follows ; 1. The resin containing die materials such as Tuff Rock and Resin Rock had superior abrasion resistance. 2. Type IV, V dental stone exhibited greater abrasion resistance than Type III dental stone. 3. The results or the surface roughness showed similar pattern with the abrasion resistance.

• Journal of Oral Medicine and Pain
• /
• 제47권1호
• /
• pp.67-71
• /
• 2022

Subchondral cysts are frequently encountered in patients with temporomandibular joint osteoarthritis (TMJ OA), particularly in advanced stage. Subchondral cysts within osteoarthritis are typically lying adjacent to the joint surface where initial load bearing occurs during activity and have been associated with greater pain and disease progression. Although the etiology of these cysts remains uncertain, recently studies report that the induction of the subchondral bone mechanical stress caused subchondral cysts. Repeated overloading leads to further deterioration of subchondral bone which render subchondral bone structure more fragile, increase the risk of osteoarthritis progress. The purpose of this study was to assess the effect of conservative treatment and longitudinal osseous changes of a large subchondral cyst in a mandibular condyle in a symptomatic TMJ OA patient.

• 치위생과학회지
• /
• 제20권2호
• /
• pp.107-117
• /
• 2020

Background: In this study, we tried to comprehensively explore clinical dental hygienist's experience of a prevention-based incremental oral health care program, which was pilot-operated by dental clinics, define prevention-based incremental oral health care as experienced in the field, and identify factors to be considered. Methods: This study conducted a focus group interview with five dental hygienists who participated in an ongoing oral management pilot project in 2016. The interview was conducted by a researcher, and the co-research team attended as progress assistants and recorded characteristics of the participants, main dictations, and non-verbal characteristics. All interviews were recorded and underwent thematic analysis to examine the questions of the study as the main axis. Results: As a result of the study, 65 meaningful statements were extracted by code, integrated into 24 sub-categories, and structured into 11 categories. Finally, four keywords were drawn: characteristics, facilitating factors, conflicting factors, and improvement measures for prevention-based incremental oral health care. Regarding prevention-based incremental oral health care in dental clinics, dental hygienists were highly aware of the physical and mental burdens of personalized treatment and education for each individual. They were responsible for the patient and for facilitating changes in the behavior of the client, leading to professional satisfaction. The dental team's cooperation and supportive attitude were found essential to continue oral health care in the dental clinic. Conclusion: Through dental team-based treatment philosophy sharing and collaboration, it is possible to provide prevention-based incremental oral health care in dental clinics. In future, it is necessary to develop a system for establishing a sustainable preventative management system for public health promotion.

• 한국치위생학회지
• /
• 제17권1호
• /
• pp.123-132
• /
• 2017

Objectives: The purpose of this study was to investigate the current status and contents of communication courses in dental hygiene programs in South Korea. Methods: Survey on dental communication training courses was done, and 51 schools (62.2%) responded among a total of 82 dental hygiene schools in Korea. The questionnaire was sent via e-mail and additional telephone calls were used to facilitate response. Statistical analysis and frequency analysis were done through SPSS 23.0 for windows program (copyright(c) SPSS Inc., USA). Results: The current establishment rates of dental communication courses in 3-year or 4-year dental hygiene programs were 96.9% and 84.2%, respectively. Such courses were identified as graduation requirement courses in 38.7% of the 3-year hygiene programs and 62.5% of the 4-year dental hygiene programs. When practical training sessions are included within such courses, 70% of such courses included 'discussion and presentation' and 'audio-visual aids' as a part of their contents, while 48.3% of them were utilizing 'role-playing'. Conclusions: As dental communication is one of the most important core competencies of dental hygienists, it should be included as a required course for graduation, and practical training such as 'role-playing' should be implemented in order to enhance communication skills in students.

• Journal of Korean Dental Science
• /
• 제10권1호
• /
• pp.35-44
• /
• 2017

In case of loss of many teeth due to dental caries or periodontal disease, improvement of masticatory function and aesthetics can be obtained through implant treatment. However, if the patient does not have a normal intercondylar relationship, it is difficult to achieve an ideal occlusal relationship with only prosthetic treatment. In particular, oral reconstruction with orthodontic treatment or orthognathic surgery is necessary for patients with mandibular prognathism. However, if the posterior occlusion collapses due to severe caries or periodontal disease, orthognathic surgery may be difficult. The occlusal vertical stop is very important for the stability of the mandibular position during occlusal reconstruction through orthognathic surgery. The patient in this case had posterior occlusion collapsed due to the caries of a large number of posterior teeth, and showed mandibular prognathism and long face. We planned a full arch restoration with orthognathic surgery and extracted the hopeless teeth. To secure the vertical stop required for orthognathic surgery, the implant was placed before surgery. After the orthognathic surgery and the final prosthesis application, the results were satisfactory for the improvement of the aesthetics and the restoration of the masticatory function.