• 한국산학기술학회논문지
• /
• 제22권2호
• /
• pp.231-239
• /
• 2021

본 연구는 구조방정식을 통하여 학생들의 치과 위생사에 대한 이미지와 취업 인식을 파악하고 온라인 정보에 대한 인식을 접목해 차후 치과위생사 보건인력 확보에 필요한 정보를 마련하고자 한다. 수집된 자료는 통계는 SPSS Statistics 24.0 와 AMOS Graphics 21.0 통계 패키지를 이용하여 자료 분석을 시행하였다. 취업을 긍정적으로 인식하는 사람은 신종 감염병이 발생해도 치과위생사의 이미지를 긍정적으로 보고, 치과위생사의 부정적 이미지를 통해 부정적 취업 인식을 이해하는 것으로 나타났다. 인터넷 정보를 긍정적으로 생각하는 사람은 인터넷 정보가 거짓 정보가 많고, 유해하며, 불안을 조장한다고 생각하고, 그 영향은 취업에 대한 부정적 인식에 영향을 미치는 것으로 나타났다. 인터넷 정보를 긍정적으로 생각하는 사람은 치과위생사가 감염에 노출되기 쉽고, 감염원을 전달 할 수 있으며, 쉽게 감염될 수 있다고 생각하고, 이는 부정적 취업에 영향을 미치는 것으로 나타났다. 결론적으로 신종 감염병 시기에는 올바른 인터넷 정보의 인식을 통하여 치과위생사의 이미지 형성을 하는 것이 중요하다.

• International Journal of Oral Biology
• /
• 제33권3호
• /
• pp.77-82
• /
• 2008

Innate immune response is initiated by the recognition of unique microbial molecular patterns through pattern recognition receptors (PRRs). The purpose of this study is to dissect the expression of various PRRs in gingival epithelial cells of differentiated versus undifferentiated states. Differentiation of immortalized human gingival epithelial HOK-16B cells was induced by culture in the presence of high $Ca^{2+}$ at increased cell density. The expression levels of various PRRs in HOK-16B cells were examined by realtime reverse transcription polymerase chain reaction (RTPCR) and flow cytometry. In addition, the expression of human beta defensins (HBDs) was examined by real time RT-PCR and the amounts of secreted cytokines were measured by enzyme linked immunosorbent assay. In undifferentiated HOK-16B cells, NACHT-LRR-PYDcontaining protein (NALP) 2 was expressed most abundantly, and toll like receptor (TLR) 2, TLR4, nucleotide-binding oligomerization domain (NOD) 1, and NOD2 were expressed in substantial levels. However, TLR3, TLR7, TLR8, TLR9, ICE protease-activating factor (IPAF), and NALP6 were hardly expressed. In differentiated cells, the levels of NOD2, NALP2, and TLR4 were different from those in undifferentiated cells at RNA but not at protein levels. Interestingly, differentiated cells expressed the increased levels of HBD-1 and -3 but secreted reduced amount of IL-8. In conclusion, the repertoire of PRRs expressed by gingival epithelial cells is limited, and undifferentiated and differentiated cells express similar levels of PRRs.

• Maxillofacial Plastic and Reconstructive Surgery
• /
• 제34권1호
• /
• pp.58-64
• /
• 2012

Purpose: Dental emergencies vary from toothaches to oral and maxillofacial traumas. Because the number of dental emergency cases has increased recently, we analyzed characteristics of patients seen during the last 2 years, in an effort to find a trend. Methods: This study was carried out with emergency room patients visiting the Department of Oral and Maxillofacial Surgery from 2009 to 2010. Results: The total number of patients studied was 1,162; the ratio of males to females was 1.73:1. The most frequent age group was 0 to 9 years, followed by 20 to 29 years. Trauma (58.7%) was the most frequent cause followed by acute toothache, oral hemorrhage, infection, and temporomandibular (TMJ) disorder. In the trauma group, injuries of soft tissue and alveolus were prevalent. The most common causes of soft tissue injury were falls, safety violations and assault. The highest incidence of emergencies was seen in patients 0 to 9 years old (41.8%). The most common causes of jaw fracture were falls, assaults, and traffic accidents in that order. In the acute toothache group, most patients had pulpitis (41.2%). In the infection group, most had buccal space abscesses (40.0%). In the hemorrhage group, post-operative bleeding cases (80.5%) were the majority, and hemostasis was obtained mostly by pressure dressings. For the TMJ disorder group, masticatory muscle disorder (65.4%) was more common than TMJ dislocation. Conclusion: In this study, trauma was the most frequent reason for patients who visited the emergency room. However, acute toothache, hemorrhage, infection and TMJ disorders were also seen frequently. Dental emergency patients could be better treated by understanding patterns of dental emergencies and performing proper diagnoses.

• Journal of Oral Medicine and Pain
• /
• 제7권1호
• /
• pp.66-70
• /
• 1982

Medical personnek are one of several groups that have been reported to have a high incidence of hepatiris B. It is also thought that the occurrence rate of hepatitis B surface antigen(HBsAg), aserologic marker for hepatitis B virus(HBV), is expected to be high in the dental personnel who are frequently exposed to the blood and saliva of the patients. Although many studies have been done to determine the HBsAg status of virus groups, limited investigations have been performed on dental personnel, especially in this country. The main purpose of this study was to identify HBsAg positivity among dental students, interns, and residents who would be expected to be a high risk group of hepatitis B infection. Screening test for HBsAg of a dental school population was performed by indirect hemagglutination(IHA)in 1982. The results were as follows : 1. Thirty four out of a total 362 persons(9.4%)tested in the study had positive response for HBsAg in their serum samples. 2. Twenty seven out of 320 dental students(8.4%)had positive for HBsAg, and in Senior class 12 out of 82 dental students (14.6%)had positive response that was the highest incidence among dental students group. 3. Seven out of 42 interns and residents(16.7%)had positive for HBsAg, and it was the highest incidence in this dental school population.

• Maxillofacial Plastic and Reconstructive Surgery
• /
• 제38권
• /
• pp.6.1-6.8
• /
• 2016

Background: Intravenous bisphosphonates have been used in metastatic breast cancer patients to reduce pathologic bone fracture and bone pain. However, necrosis of the jaw has been reported in those who received intravenous bisphosphonates. Bisphosphonate-related osteonecrosis of the jaw (BRONJ) is caused by dental extraction, dental implant surgery, and denture wearing; however, it occurs spontaneously. The purpose of this study was to report BRONJ in metastatic breast cancer patients. Methods: Consecutive 25 female patients were referred from the Department of Oncology from 2008 to 2014 for jaw bone discomfort. Staging of breast cancer, history of bisphosphonate infusion, etiology of BRONJ, and treatment results were reviewed. Average age of the patients was 55.4 years old (38-74). Twelve maxillae and 16 mandibles were involved. Conservative treatments such as irrigation, antibiotic medication, analgesics, and oral gargle were applied for all patients for the initial treatment. Patients who had sequestrum underwent debridement and primary closure. Results: The etiologies of BRONJ were dental extraction (19 cases), dental implant (2 cases), and endodontic treatment (1 case). However, three patients did not have any risk factors to cause BRONJ. Three patients died of progression of metastasis during follow-up periods. Surgical debridement was performed in 21 patients with success in 18 patients. Three patients showed recurred bone exposure and infection after operation. Conclusions: Prevention of the BRONJ is critical in metastatic breast cancer patients. Conservative treatment to reduce pain, discomfort, and infection is recommended for the initial therapy. However, if there is a sequestrum, surgical debridement and primary closure is the key to treat the BRONJ.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제30권1호
• /
• pp.69-73
• /
• 2004

뮤코르 진균증은 드물게 발생하지만 종종 치명적일 수 있으며, Phycomycetes종의 기회 감염에 의해 발생한다. 이 미생물은 부생의 호기성 진균(saprophytic aerobial fungus)이며 구강 점막, 부비동과 목에 통상적으로 존재하며 부패해 가는 식물, 거름, 고당 함유 음식 등에 나타난다. 뮤코르 진균증은 다양한 유형의 임상 형태로 면역결핍환자들에서 빠른 진행과 높은 치사율로 나타난다. 그러나 건강한 사람에서 두경부 영역에 감염된 예는 거의 없다. 본 교실에서는 58세 당뇨병이 있는 남자 환자에서 상악에 발생한 뮤코르 진균증의 증례에서 외과적 절제술과 ampotericin B의 정맥내 투여로 치료 되었으며, 현재까지 특별한 재발 소견 없이 양호한 결과를 얻었기에 이를 문헌 고찰과 함께 보고하는 바이다.

• The Journal of Advanced Prosthodontics
• /
• 제4권2호
• /
• pp.84-88
• /
• 2012

PURPOSE. To evaluate the efficacy of sodium hypochlorite (1 : 10) and iodophor disinfectants on alginate impressions along with their effect on the survived bacterium count on the gypsum cast. MATERIALS AND METHODS. Four alginate impression on each dentate patients were made, of which Group I were not washed or disinfected, Group II impressions were merely washed with water, Group III were disinfected by spraying with sodium hypochlorite (1 : 10), Group IV were disinfected with iodophor (1 : 213). Gypsum cast (type III) were made from all the impression. Impressions and gypsum cast were swabbed in mid palatal region for bacterial culture. Bacterial colony counting done after 3 days of incubation at $37^{\circ}C$ in blood agar media. The data obtained was analyzed by one way ANOVA test at a significant difference level of 0.05. RESULTS. Group I and Group II showed significantly more bacteria compared to Group III and Group IV. Bacterial colonies on the alginate impression and gypsum cast in group disinfected with Sodium hypochlorite (1 : 10) were 0.18, 0.82 respectively compared to group treated with iodophor (1 : 213). There was an increase in bacterial count on dental cast compared to source alginate impressions. CONCLUSION. Sodium hypochlorite (1 : 10) was found to be better disinfectant for alginate impression. There was an indication of increase in number of bacteria from alginate impression to making of dental cast. Additional gypsum cast disinfectant procedures need to be encouraged to completely eliminate cross infection to dental laboratory.

• Journal of Korean Dental Science
• /
• 제7권1호
• /
• pp.38-42
• /
• 2014

Bisphosphonate-related osteonecrosis of the jaw (BRONJ) is defined as exposed necrotic bone without evidence of healing for at least 8 weeks in the maxillofacial area in a patient with history of bisphosphonate use. Obtaining complete coverage of the hard tissue by soft tissue in BRONJ patients is especially important. Therefore, managing the mucosa is one of the key factors in a successful outcome, but this is especially hard to achieve in BRONJ patients. Various applications of buccal fat pad in oral reconstruction-including the closure of surgical defects following tumor excision, repair of surgical defects following the excision of leukoplakia and submucous fibrosis, closure of primary and secondary palatal clefts, coverage of maxillary and mandibular bone grafts, and lining of sinus surface of maxillary sinus bone graft in sinus lift procedures for maxillary augmentation-have been studied. Eliminating all potential sites of infection and post-operative infection control is crucial in BRONJ. We present a case using the buccal fat pad pedicle for a stage 3 BRONJ defect. Uneventful total epithelialization of the buccal fat pad regardless of size was noted. In summary, the buccal fat pad has versatile application and various recipient sites for surgical utilization. It is an easy technique, with promising overall success rates. With careful selection and handling, buccal fat graft can resolve problems with soft tissue coverage in stage 2 or 3 BRONJ patients.

• 한국전자통신학회논문지
• /
• 제13권2호
• /
• pp.487-496
• /
• 2018

졸업 후 치과의료기관에서 근무하게 될 치위생(학)과 학생들은 AIDS 감염인의 수명 연장으로 인한 향후 AIDS 감염인의 비율도 높아져 치과의료기관에서의 AIDS 감염인을 접할 기회도 많아지게 될 것이다. 이에 AIDS에 대한 지식 수준이 AIDS에 대한 태도에 영향을 미친다는 연구 결과를 토대로 현재 치위생(학)과 학생들의 AIDS에 대한 지식 수준과 감염인에 대한 태도를 파악하고, 치위생(학)과에서는 CDC에서 발표한 보편주의 지침을 통해 감염방지에 대한 올바른 인식을 갖추도록 해야 하며 에이즈에 대한 교육이 전문가교육으로 이루어져 잘못된 지식으로 인한 감염자에 대한 낙인이 부정적인 태도로 이어지지 않도록 해야 할 것이다. 또한 향후 치과위생사로서 치과의료기관에서 보편주의 지침을 모든 환자에게 철저히 적용할 수 있어야 할 것이다. 감염 예방에 도움을 줄 수 있는 교육프로그램 개발의 기초자료로 활용하기 위해 SNS를 이용한 본 연구를 시도하였다.

• Restorative Dentistry and Endodontics
• /
• 제39권3호
• /
• pp.215-219
• /
• 2014

Whenever endodontic therapy is performed on mandibular posterior teeth, damage to the inferior alveolar nerve or any of its branches is possible. Acute periapical infection in mandibular posterior teeth may also sometimes disturb the normal functioning of the inferior alveolar nerve. The most common clinical manifestation of these insults is the paresthesia of the inferior alveolar nerve or mental nerve paresthesia. Paresthesia usually manifests as burning, prickling, tingling, numbness, itching or any deviation from normal sensation. Altered sensation and pain in the involved areas may interfere with speaking, eating, drinking, shaving, tooth brushing and other events of social interaction which will have a disturbing impact on the patient. Paresthesia can be short term, long term or even permanent. The duration of the paresthesia depends upon the extent of the nerve damage or persistence of the etiology. Permanent paresthesia is the result of nerve trunk laceration or actual total nerve damage. Paresthesia must be treated as soon as diagnosed to have better treatment outcomes. The present paper describes a case of mental nerve paresthesia arising after the start of the endodontic therapy in left mandibular first molar which was managed successfully by conservative treatment.