• Maxillofacial Plastic and Reconstructive Surgery
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• 제40권
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• pp.16.1-16.5
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• 2018

Background: Proliferative verrucous leukoplakia (PVL) is an oral potentially malignant disorder, characterized by multifocal expression, progressive clinical evolution, and a high rate of malignant transformation. Evidence-based information regarding optimal PVL management is lacking, due to the paucity of data. The present report describes a case of PVL associated with HPV-16 infection and epithelial dysplasia treated by diode laser surgery, and the outcome of disease clinical remission over a 2-year follow-up period. Case report: A 61-year-old Caucasian male with oral verrucous hyperkeratosis presented for diagnosis. The lesions were localized on the maxillary gingiva and palatal alveolar ridge. Multiple biopsy specimens have been taken by mapping the keratotic lesion area. Microscopic examination was compatible with a diagnosis of PVL with focal mild dysplasia, localized in the right maxillary gingiva. Polymerase chain reaction (PCR) was done for human papillomavirus (HPV) detection which revealed presence of HPV DNA, and the genotype revealed HPV 16 in the sample. The PVL in the right gingival area was treated on an outpatient basis by excision with a diode laser. This approach resulted in good clinical response and decreased morbidity over a 2-year follow-up period. Conclusions: This case illustrates the benefit of a conservative approach by diode laser treatment than wide surgical excision for management of the PVL lesions associated with mild dysplasia and HPV-16 infection.

• 한국치위생학회지
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• 제17권6호
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• pp.1067-1080
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• 2017

Objectives: This study analyzed the perception towards clinical practice education content held by dental hygiene students in dental institutions and their perceived importance of dental hygienists' clinical duties. Methods: The subjects of this study were 182 dental hygienists who were working at dental institutions in Seoul, Gyeonggi, and Chungcheong areas. A survey was conducted with a self-administered questionnaire. In the questionnaire, the clinical practice contents were classified into observation, preparation, and performance, and the importance of clinical duty was measured with a 3-point scale. For the clinical practice contents and the importance of duty, descriptive statistics and chi-square test were performed, and the study results were analyzed using STATA 11.0. Results: With regard to clinical practice contents, observation was mainly performed in oral & maxillofacilal radiology, preventive dentistry, periodontal medicine and oral medicine. In primary care and infection control, practice and observation were mainly performed. In the department of orthodontics and pediatric dentistry, observation and preparation were mainly conducted, while in oral surgery, conservative dentistry observation, preparation and practice were all conducted. With regard to clinical practice contents according to the dental institution, there were statistically significant differences in the type of dental institution and the duty (p>0.05). In terms of the importance of dental hygienist's duty, infection control, toothbrushing education for each patient, removal of plaque, and patient education after surgery were considered important. Conclusions: For clinical practice of the dental hygiene department, the education contents should be standardized in accordance with the importance of the dental hygienist's duty, a protocol for operation of practice should be developed, and a method of standardization of evaluation should be sought in the future.

• 대한치과의사협회지
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• 제32권1호통권296호
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• pp.69-74
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• 1994

Fifty-one patients with fracture of mandible were treated by rigid internal fixation using AO Eccentric Dynamic Compression Plate. All teeth in the fracture line were left in all patients. None of patients were placed into maxillomancibular fixation. Two patients postoperatively developed infection (3.9%). The use of the AO EDCP for the fracture of mandible was found to be useful to prevent the infection, even permitting maintenance of the teeth in the line of fracture.

• International Journal of Oral Biology
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• 제46권1호
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• pp.60-65
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• 2021

Dental health care workers (DHCW) are at a risk of occupational exposure to Helicobacter pylori from the aerosolized oral biofilms and saliva of patients. We designed this study to investigate the prevalence of H. pylori in the oral biofilms of a group of dental and non-dental undergraduates from Sri Lanka. After obtaining informed consent, oral biofilms were collected from 38 dental undergraduates (19 males and 19 females) undergoing clinical training and 33 non-dental undergraduates (14 males and 19 females). The participants were in the age range of 22-27 years and had healthy periodontium. Total DNA from the oral biofilms were extracted, and H. pylori DNA was detected using polymerase chain reaction (PCR) amplification of 16S rRNA gene of H. pylori using JW22-JW23 primers, and the results were confirmed using PCR amplification of H. pylori-urease specific HPU1-HPU2 primers. Out of 71 participants, 11 (28.95%) dental and 3 (9.09%) non-dental undergraduates had H. pylori in their oral biofilms indicating an overall prevalence rate of 19.72% (14/71). Thus, the prevalence of H. pylori in oral biofilms was significantly higher in dental undergraduates than in non-dental undergraduates (p < 0.05). An odds ratio of 4.07 indicated that dental undergraduates were four times more likely to harbor H. pylori in their oral biofilms than non-dental undergraduates. Foregoing data support the fact that there may be greater occupational risk of exposure to H. pylori for dental undergraduates during clinical training than that for non-dental undergraduates, warranting meticulous infection control practices during clinical dentistry.

• Journal of Oral Medicine and Pain
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• 제46권3호
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• pp.93-97
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• 2021

The limited mouth opening, also known as trismus, can result from temporomandibular joint disorders, infection, neoplasm, trauma, and abnormal anatomic structure like coronoid hyperplasia. Head and neck cancer patients often complain of limited mouth opening, which is usually induced by myofibrotic contracture of masticatory muscle. But clinicians should consider any reasons such as infection or cancer growth and metastasis if trismus gets worse or pain develops. We report the case of the patient, who was diagnosed with myxofibrosarcoma on nasal cavity. He had suffered from trismus after concurrent chemoradiotherapy. However, pain had developed and trismus had worsened. He was diagnosed with infratemporal space abscess and myositis of masticatory muscles.

• 대한치과보존학회:학술대회논문집
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• 대한치과보존학회 2001년도 추계학술대회(제116회) 및 13회 Workshop 제3회 한ㆍ일 치과보존학회 공동학술대회 초록집
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• pp.565.1-565
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• 2001

This study aimed to compare the efficiency of propylene glycol (PG) and distilled water (DW) as vehicles that would allow diffusion of dye through the root canal system. Human maxillary central incisors were chosen and de-crowned. After enlarging the upper part of the root canal with a Peeso reamer, cementum covering the upper third of the root was removed. The roots were ultrasonically irrigated with 5% NaOCI to remove smear layer.(omitted)

• Restorative Dentistry and Endodontics
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• 제38권2호
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• pp.90-92
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• 2013

Although periapical inflammatory lesions are usually resulted by infection in the root canal system, this rare case showed that a periapical lesion related to an infected tooth may cause pulpal necrosis in adjacent intact tooth, with no history or clinical signs of caries, disease, trauma or developmental anomaly. This case also suggests that the periapical lesion can be treated conservatively, without surgical intervention. Furthermore, this case highlights the importance of prompt treatment of apical periodontitis before the lesion becomes extensive as well as follows up of large lesions.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제30권1호
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• pp.34-42
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• 2004

The appropriate care to the dental emergency patients is much important in the aspect of community dental service. To attain such a purpose, the sacred duty of the training of oral and maxillofacial surgeons is required. So, a retrospective study on the characteristics of dental injuries and diseases in emergency care unit will be very meaningful. This study was carried by reviewing the charts and radiographic films of 3,394 patients, treated for dental emergency at Wonju Christian Hospital, Republic of Korea, from January 1, 1993 to December 31, 2002. All patients were classified to 6 groups including trauma, toothache, infection, hemorrhage, TMJ disorder and the others. The clinical characteristics of diseases and treatment modalities according to each group were analyzed. The trauma (73.9%) was the most frequent cause in dental emergency patients, and acute toothache, odontogenic infection, oral hemorrhage, and TMJ disorder were next in order. Gender prediction was male (68%), there were many patients on May and December in the monthly frequency, and the most frequent age group was from 0 to 9 years. In the trauma group, male (68.6%) was predominant, and soft tissue injuries and primary closures were the most frequent type of injury and treatment. In jaw fractures, traffic accidents were the most cause and the weakest site was mandibular symphysis area, and mandibular angle, condyle, and body area were next in order. In the acute toothache group, the cause was dental pulpitis mostly and treatment for that was drug administration mainly. Buccal space abscess in infection group had the largest incidence (24.5%), and common treatments were incision and drainage and medications. In the hemorrhage group, a major cause was postoperative bleeding (60.3%) and hemostasis was obtained by pressure dressing, curettage and suture. For the TMJ disorder group, the peak incidence (63.8%) was shown in the post-traumatic myofascial pain dysfunction syndrome and its primary care was medication such as analgesics and sedatives. In the other group, the various specific symptoms were complained due to acute sialadenitis, trigeminal neuralgia, acute stomatitis, chemical burn, terminal stage neuritis of head and neck cancer, and foreign body aspiration. In conclusion, for the rapid and proper care of the emergency dental diseases, well-trained education should be presented to the intern and resident course of oral and maxillofacial surgery. And it is demanded that oral and maxillofacial surgeons must be prepared in knowledge and skill for such emergency care.

• 한국산학기술학회논문지
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• 제18권6호
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• pp.494-502
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• 2017

본 연구는 치위생과 학생의 학교 교육과정상에 들어있는 치과감염관리 교과의 수업 후 감염관리 인식 변화를 학년별로 알아보고 교육 과정에 감염관리 교육방법의 추가 편성을 제시하기 위한 서술적 인과관계 연구이다. 결과로 첫째, 병원 실습 경험에 따른 항체인지는 실습 경험이 있는 학생 127명(62.6%)이 더 알고 있었고, 개인 방호 선택에서는 실습 경험과 상관없이 손 씻기가 가장 높았고, 그다음으로 마스크 쓰기를 선호하였으며, 감염 교육방법 선택은 실습수업이 병원 실습 경험과 상관없이 높게 나타났다. 둘째, 학년에 따른 항체 인지는 학년이 높을수록 더 인지하였고, 개인 방호 선택은 1, 2학년은 손 씻기를 선택한 반면, 3학년은 마스크 쓰기 (44.4%)를 선택하여 학년 간의 차이를 보였다 셋째, 실습 경험에 따른 환자 및 개인 건강인식 정도 차이에서는 환자 건강 인식 관련 결과 t 값은 '2.387', 유의 확률은 '0.05'보다 작기 때문에 실습 경험에 따른 환자 인식에는 차이가 나는 것으로 나타났다. 넷째, 환자 관련 감염 인식에 대해서는 교육 후 인식 변화가 가장 큰 설명 요인으로 나타났다. 학년, 실습 경험 유무의 차이에 따른 유의성이 나타난 것은 학년별로 실습 경험이 내재되어 있고, 임상실습 경험의 수에서 차이를 보였으며, 학생들의 교육방법 선택에서도 실습교육이 가장 효과적인 방법으로 선호도가 높았다. 감염 교육의 효과는 인식 형성에 도움을 주는 결과를 도출하여 계속적인 감염관리 교육의 계발과 재교육의 필요성을 알 수 있었다.

• 대한치과보철학회지
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• 제53권3호
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• pp.189-197
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• 2015

목적:이 연구의 목적은 보철물 제작 과정에서 감염 관리에 관한 치과 종사자의 인지도 및 실천도를 평가하기 위함이다. 대상 및 방법: 연구 대상은 대전 지역에 종사하는 치과의사, 치과위생사, 치과기공사로 구성되었다(n=126). 설문지는 연구 대상의 일반적 특성, 교육 관련 문항, 치과 보철 치료 과정에서 감염 관리에 관한 인지도와 실천도에 대한 문항으로 이루어졌으며 연구의 취지에 대한 설명 후 직접 기입하게 하였다. 인지도와 실천도는 1에서 5 사이 값을 갖는 Likert 척도를 이용하여 측정하였다. 인지도 및 실천도에 대한 평균을 계산하였고, 직종간 차이를 검정하기 위해 분산분석 시행하였으며, 인지도가 실천도에 미치는 영향을 평가하기 위해 회귀분석을 실시하였다. 결과: 전체 응답자의 27.7%는 치과 보철 치료와 관련된 감염 관리 교육이 부족하다고 응답하였다. 치과 보철치료와 관련된 감염관리 인지도와 실천도의 평균값은 각각 $2.72{\pm}0.80$, $1.58{\pm}0.88$으로 나타났다. 감염 관리 교육을 받았다고 답한 응답자의 실천도는 $1.62{\pm}0.9$, 받지 못했다고 답한 응답자의 실천도는 $1.31{\pm}0.49$로 나타났다. 현재 근무하는 곳에 감염 관리 지침서가 있는 응답자의 인지도는 $3.01{\pm}0.91$, 없는 응답자의 경우 $2.56{\pm}0.70$로 나타났다. 결론: 1. 대학 교육과정 중 감염 관리 교육을 받은 응답자는 그렇지 않은 응답자에 비해 실천도가 높은 것으로 나타났다. 2. 근무지에 감염 관리 지침서를 갖고 있는 응답자는 그렇지 않은 응답자에 비해 인지도가 높은 것으로 나타났다. 3. 치과 보철물 제작과정에서의 감염 관리에 대한 인지도와 실천도 사이에 상관관계가 존재했으며, 인지도가 높을수록 실천도가 높게 나타났다. 4. 치과 보철물 제작과정에서의 감염 관리에 대한 실천도는 인지도에 비해 낮게 나타났다.