• 한국치위생학회지
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• 제9권4호
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• pp.808-823
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• 2009

Objectives : This study was to suggest the basic data to develop the national exam contents for dental hygiene by comparing with those of other country. Methods : Several dental hygiene education course results were reviewed, and analyzed the culture subjects, basic major subjects, educational subjects, national exam contents in 3 or 4 years dental hygiene curriculum. Results : In Korea, grades of culture subjects in dental hygiene curriculum were different between 3 and 4 years education course, mean grades were 10.4, and 34.5 respectively. While there were few different between 3 and 4 years education course, mean grades were 36, and 36.5 respectively in foreign country. In Korea, grades of major subjects in dental hygiene curriculum were similar between 3 and 4 years education course as mean grades of 110, while there were different between 3 and 4 years education course, mean grades were 60 and 80 respectively in foreign country. In Korea, number of major subject was higher in 4 years(n=61) than 3 years(n=54). However, it was lower in 4 years(n=27) than in 3 years(n=33) in foreign country. Total grade number was 129 in 3 years, and 145 in 4 years in Korea, while it was 97 in 3 years, and 116 in 4 years in foreign country. By analyzing 3 years education course, culture subject was 9.5%, basic health was 11.2%, oral biology was 11.2%, clinical dentistry was 20.7%, public oral health was 10.4%, oral hygiene care was 35.9%, management of dental clinic was 9.4%, education was 2.8% in Korea. In USA, dental hygiene examination contains practice work as major part, while theory was thought of as most important things in korea. Conclusions : It is necessary to improve learning course of dental hygiene curriculum on the basis of other country's system, and then it could be possible to development of good quality's national examination contents, thus good quality of dental hygiene personnel would be turned out in Korea.

• 대한심미치과학회지
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• 제9권1호
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• pp.20-36
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• 2000

The movements of oral surrounding muscles, lips, and tongue play a very important role while masticating, swallowing, and speaking. In case of the edentulous patient wearing dentures as well, every movement of the tongue can be seen almost the same as that of the dentulous jaw. The crushed food during mastication is swallowed and sent to pharynx. At this course, the contact of the posterior portion of tongue with dentures affects the stabilization of denture. The retention and stability of the complete dentures are related with buccinator muscles of buccal parts, lips in front, and tongue of the lingual sides. Strack(1946) insisted that the arrangement of artificial teeth in the same place as that of the natural dentition is the best way to maintain the stability of denture. In this report, I would like to introduce the several advantages of a new impression method taken simultaneously, and its procedures and clinical cases.

• Journal of Dental Anesthesia and Pain Medicine
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• 제21권2호
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• pp.155-165
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• 2021

Background: This study aimed to assess the course of anxiety and pain during lower third molar (LTMo) surgery and explore the role of mobile and single-channel electroencephalography under clinical and surgical conditions. Methods: The State-Trait Anxiety Inventory (STAI), Corah's Dental Anxiety Scale (DAS), and Interval Scale of Anxiety Response (ISAR) were used. The patient self-rated anxiety (PSA), the pain felt during and after surgery, EEG, heart rate (HR), and blood pressure (BP) were assessed. Results: The Attention (ATT) and Meditation (MED) algorithms and indicators evaluated in this study showed several associations. ATT showed interactions and an association with STAI-S, pain during surgery, PSA level, HR, and surgical duration. MED showed an interaction and association with DAS, STAI-S, and pain due to anesthesia. Preclinical anxiety parameters may influence clinical perceptions and biological parameters during LTMo surgeries. High STAI-Trait and PSA scores were associated with postoperative pain, whereas high STAI-State scores were associated with more pain during anesthesia and surgery, as well as DAS, which was also associated with patient interference during surgery due to anxiety. Conclusions: The findings suggest that single-channel EEG is promising for evaluating brain responses associated with systemic reactions related to anxiety, surgical stress, and pain during oral surgery.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제31권2호
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• pp.105-115
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• 2005

Purpose: The lymph node status assessed by conventional histological examination is the most important prognostic factor in patients undergoing surgery for oral squamous cell carcinoma. The presence of lymph node metastasis has a strong adverse impact on patient survival even after extended radical resection. Despite these findings, tumour recurrence is not rare after surgery, even when histological examination shows no lymph node metastasis. Recently, molecular-genetically and immunohistochemically demonstrated micrometastasis to the lymph nodes has been shown to have a significant adverse influence on survival in patients with squamous cell carcinoma and histologically negative nodes. The present study sought to determine the incidence and clarify the clinical significance of molecular-genetically and immunohistochemically demonstrated nodal micrometastases and to correlate these data with the stage of oral cancer. Methods: Lymph nodes systematically removed from 71 patients who underwent curative resection between 1998 and 2003 with head and neck squamous cell carcinoma were examined molecular-genetically to detect cytokeratin 5 mRNA with RT-PCR and immunohistochemically to detect cells that stained positively for cytokeratins with the monoclonal antibody cocktail AE1/AE3. The postoperative course and survival rates were compared among patients with and without micrometastases, after numerical classification of overt metastatic nodes. Results: micrometastases were detected in 43(60%) of 71 patients by RT-PCR and 26(36%) of 71 patients by immunohistochemistry. By RT-PCR analysis, patients exhibiting a positive band for CK 5 mRNA had a significantly worse prognosis than those were RT-PCR negative. By immunohistochemistry, the presence of micrometastasis did not predict patient outcome. Conclusion: Micrometastases detected by RT-PCR may be of clinical value in identifying patients who may be at high risk for recurrence and who are therefore likely to benefit from systemic adjuvant therapy.

• 대한치위생과학회지
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• 제4권2호
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• pp.77-88
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• 2021

Background: In this study, the Capstone Design was applied to the clinical dental hygiene course of the Department of Dental Hygiene, and its effect was confirmed by qualitatively evaluating the students' reflection on the capstone design class experience. Methods: This study was conducted for the "Clinical Dental Hygiene and Practice III" course, in which third year students develop the ability to judge and plan dental hygiene based on problem-solving ability and critical thinking. By applying the Capstone Design within the core curriculum of the class, the students analyzed problems based on their major knowledge of dental hygiene in order to improve their ability to manipulate periodontal instruments, and focusedon the process of developing the contents of periodontal instruments by using them. Results: The application of Capstone Design on clinical dental hygiene and practice III classes increased students' active class participation, and through the problem-solving process, students' learning and confidence improved. Conclusion: The Capstone Design can be viewed as a teaching method that promotes the participation of students in the dental hygiene department and can effectively help their learning and confidence through a problem-solving process.

• 한국치위생학회지
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• 제22권2호
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• pp.81-92
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• 2022

연구목적: 본 연구의 목적은 문제중심학습(Problem-Based Learning) 수업 모듈을 개발하여 임상치위생학 수업에 적용함으로써 문제중심학습을 운영하는 것에 대한 학습자의 만족도와 치위생학의 역량 수준, 성찰일지를 통한 학습자 의견을 평가하는 것이다. 연구방법: 본 연구는 2020년 2학기에 수행되었고, 연구대상은 4학년 2학기 과정의 임상치위생학(특수환자구강건강관리) 교과목 수강생 31명이었다. 개발된 PBL 학습모듈을 15주간 수업에 적용하였고, 모든 PBL 수업이 종료된 후 수업에 대한 전반적인 만족도, 학생 역량 수준의 변화를 평가하였다. 연구결과: PBL 수업에 대한 학습자의 만족도는 전반적으로 높았고, 자가역량 수준도 수업 전에 비하여 증가하였다. 더불어, PBL 학습활동 후 성찰일지를 통해 상위주제 3개는 PBL 학습을 통해 얻은 역량, PBL 학습을 통해 배운 인문사회학적 요소, PBL 학습에서의 장애 요인이 도출되었다. 결론: 본 연구에서 개발된 PBL 학습모듈은 학생들이 문제를 파악하여 통합적으로 해결할 수 있는 역량뿐만 아니라 인문사회학적 역량 제고를 견인할 수 있는 수업이라는 것을 확인하였다.

• Journal of Dental Anesthesia and Pain Medicine
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• 제22권3호
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• pp.161-174
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• 2022

Foreign body aspiration can produce a medical emergency. Obstruction of the airways can be life-threatening, and complications may develop in less-severe cases if it is left untreated. Although it is more prevalent in children by approximately three times, adults can still experience it, and it is more frequently related to healthcare in adults. Objects used in dental treatment are usually placed in the oral cavity and can be ingested or inhaled by accident. Dental treatment has been identified as an important cause of the misplacement of foreign bodies in the airway. However, few reports have been published on dentistry-related foreign body aspiration. This paper discusses the disease course, management, and clinical outcomes of foreign body aspiration, especially those associated with dentistry. The patient must be examined for respiratory distress. If the patient is unstable, urgent airway management and the maneuvers for removal should be performed. Radiographs and computed tomography can help identify and locate the object. The treatment of choice is often bronchoscopy, and both flexible and rigid endoscopes can be used depending on the situation. Preventive measures need to be implemented to avoid inhalation accidents given the potential consequences. Though the incidence is rare, healthcare levels need to be enhanced to avert morbidity and mortality. Radiological evaluation and bronchoscopy are vital for management.

• 한국치위생학회지
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• 제9권2호
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• pp.111-124
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• 2009

This study analyzes through the review of literature and laws the exposure time, clinical frequency, and radiation exposure of intraoral and extraoral radiography as well as of panoramic radiography performed by dental hygienists in dental clinics, compares the dental radiology curriculums of radiological science and dental hygiene departments, and proposes the expansion of dental hygienists' radiography operations. The radiology curriculums were compared between the radiological science and dental hygiene departments of colleges. For new analysis by radiography for dental diagnosis, the exposure time, radiation absorbed dose, effective dose, and number of days of natural radiation were compared by the type of oral radiation films and radiographical techniques proposed by domestic and international studies. The exposure time of panoramic radiography is 15 seconds and it takes about two minutes for completion, whereas the exposure time of the standard radiography is 0.2~0.8 seconds and it takes 10 times longer for completion of the radiography of full mouth than the panoramic radiography. The standard radiography can cause distortions of radiation at severely curved parts of dental arch and palatopharyngeal reflex. However, panoramic radiography can be performed even for lock jaw patients, causes less inconvenience to patients and is much simpler than the standard radiography. The percentage of dental clinics where radiography is performed by dental hygienists was 92.0%, and the percentage of standard film radiography by dental hygienists was 98% whereas the percentage of panoramic radiography by dental hygienists was 92%. For the absorbed dose which is an indicator of radiation exposure, the When the effective dose which is an indicator of the danger of radiation exposure was converted to the number of days of natural radiation, it was 3.3 days for panoramic radiography, but 13.9 days for the full mouth standard radiography by bisecting angle technique which was 4.2 times longer than the panoramic radiography. There were two colleges that had a dental radiology course with two credits in the departments of radiological science. The credits for dental radiology courses in the department of dental hygiene ranged varied by college, ranging from 3 to 8; on average, the theory course was 2.2 credits and the practice course was 2.02 credits. To summarize the above results, the percentage of dental clinics where panoramic radiography is performed by dental hygienists under the guidance of dentists is high. Panoramic radiography has become an essential facility for dental clinics. It is faster than standard film radiography and less dangerous due to low radiation exposure. Panoramic radiography is a simple mechanical job that does not require training of oral radiography by radiotechnologist. Because panoramic radiography is one of major operations which must be performed at all times in dental clinics, it must be designated as intraoral technique rather than extraoral technique, or legalized for inclusion in the scope of operations of dental hygienists.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제16권1호
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• pp.104-111
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• 1994

Necrotizing fascitis is a severe soft tissue infection characterized by extensive necrosis of superficial fascia, suppurative fascitis, vascular thrombosis, widespread undermining of surrounding tissues. Associated systemic problems are widespread undermining of surrounding tissues, Associated systemic problems are common, with chronic alcoholism and diabetes being most prominent. Most commonly this disease presents in the extremities, trunk, and perineum. Necrotizing fascitis of dental origing is rare and its fulminating clinical course is not well documented in the dental literature. The present report is a case of necrotizing fascitis following vital extirpation of the pulp in a patient with uncontrolled diabetes mellitus and liver cirrhosis. Originally throught to be caused by hemolytic streptococcus organism or stphylococcus aureus, advances in anaerobic culturing have shown it to be a synergistic bacterial infection involving aerobic and ovligate anaerobes. it is relatively rare in relatively rare in haea and neck regions. If it was not diagnosed and treated in early stages, necrotizing fascitis can be potentially fetal, with a mortality rate approaching 40%. It's treatment requires early recognition, prompt and aggressive surgical debriment and proper supportive cares, such as, antibiotic therapy, fluid resuscitation and correction of metabolic and electrolyte disorder, resolving of the underlying systemic disease. Recently, we experienced two cases of necrotizing fascitis in cervicofacial region, One patient was 60 years old male with uncontrolled Diabetes Mellitus and other patient was 48 years old with steroid therapy during 30 years. Local surgical wound healing was successful but, patients were died after admission, because of lung abscess, gastrointestinal bleeding, septic shock and respiration hold.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제26권5호
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• pp.497-506
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• 2000

This study is comprised of data obtained from the files of 346 patients with temporomandibular disorders. All patients were diagnosed, treated and followed in the Department of Dentistry at the Inha university hospital, Incheon, Korea. The patients had treated with medications, physical therapy, occlusal splint and arthrocentesis. The study data were obtained from the medical records and telephone interviews that were conducted by research assistants. The results were as follows 1. The patient's main complaint was pain(77%), and mouth opening limitation was 17%. 2. An analysis of the medical records of the 346 patients disclosed that 82% were improved and 17% had no improvement when they were dismissed. 1% of the patients had become worse during therapy. 3. A success rate of 82% was achieved when medication assisted physical therapy was included. In the current status at the telephone interview, 270 patients(89%) reported that they were doing well with 56% describing themselves as asymtomatic and 32% experiencing only minor residual or recurrent symptoms. 11% regarded themselves as unimproved and worse. 4. In the current status of the unsuccessfully treated patients by medications and physical therapy, 64% of patients were doing well(3% as asymptomatic and 56% as only minor residual or recurrent symptom). But 36% of patients was reported as unimproved and worse. 5. TMJ has a remarkable adaptive potential and TMJ disorder has a natural history of spontaneous fluctuations and favorable prognosis during the subsequent natural course. 6. In the treatment of the temporomandibular disorders, there is a treatment ladder, starting with the simplest and least expensive treatment, that is ascended until resolution of the patient's symptoms occur. These findings suggest that conservative reversible therapies are both sufficient and appropriate for management of temporomandibular disorder in most patients. Major alterations of mandibular position or dentoalveolar relationships do not appear to be necessary for obtaining either short term or long term success and therefore they can be generally regards as inappropriate treatment for this disorder. The fact that physical therapy is non-invasive and does not appear to be fraught with irreversible changes, makes it a very applicable vehicle in the area of clinical TMJ disorder management.