• 대한의생명과학회지
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• 제20권4호
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• pp.201-208
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• 2014

This study was conducted to investigate hypoacusis due to workplace noise among dental technicians. Pure tone audiometry, impedance audiometry and heart rate variability were measured for 60 dental technicians and office workers in D city from July to November 2013, and a survey on the effects of noise was conducted. SPSS 19.0 was used for statistical analysis. In the result for threshold of pure tone audiometry, the average hearing threshold of left ears in the air conduction (AC) test showed a statistically significant decrease (P=0.019) among dental technicians, who are frequently exposed to workplace noise. The hearing threshold in the AC test for each frequency was significantly different between the two groups at 125 Hz (P=0.012) in right ears and at 1 kHz (P=0.022), 2 kHz (P=0.040), and 8 kHz (P=0.018) in left ears. Dental technicians who had worked for 16 years or longer had a significantly higher incidence of hypoacusis in the right ear (P=0.030) and in the left ear (P=0.010). In impedance audiometry showed a tympanometry result of type A in both the dental technician group and the office worker group.

• 한국치위생학회지
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• 제6권4호
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• pp.263-282
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• 2006

The purpose of study was to offer devices to activate the dental health class of community health center and to evaluate the present programs and to propose adequate guidelines for future public dental health program of dental health care in health center. For this study, the mail quastionnaire survey was carried out from the 116 dental hygienists who are working in community health center. Present condition and direction of public dental health service are as follows: dentist's office was 90% by area and work department. Dental health department was equipped in 91.7% of 'public health center', but 'health branch office' was 57.9%. Dental hygienist education condition of Public health center was the most frequency in 'At large city'. 'Have no entirely' of dental health education number of times was 35.8% in 3 years. That is 44.5% in supplement insturction. Most Dental hygienist's business was most 'teeth-sealant' and 'Old man false teeth prosthetic dentistry business'. Therefor, The Obstacle factors of dental health service activity were 'manpower tribe(average 3.92)', and next 'lack of understanding and support insufficiency of law(average 3.47)'. Curriculum for educational practice should be also designed for brightening the dental health service business. The most important thing for dental health service is 'expanding and improving the facilities Legal system' and next 'Opportunity enlargement and activation that can take dental hygienist's residency'.

• 치위생과학회지
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• 제7권4호
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• pp.263-269
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• 2007

치과진료실에서의 감염방지 실태를 분석하여 향후 치과진료실에서의 감염방지 수준을 향상시키기 위한 방안을 제시하고자 대구광역시 소재 치과 병 의원에 근무하는 치과의사 50명, 치과위생사 176명, 간호조무사 100명을 대상으로 감염방지 교육 및 감염성 관리 실태를 분석한 결과는 다음과 같다. 1. 건강검진 실시율은 치과의사가 가장 높았고, 예방접종 실시율은 치과위생사가 가장 높았다. 2. 감염방지 교육 경험률은 치과의사가 가장 높았고, 간호조무사가 가장 낮았다(P < 0.05). 3. 개인용 보호장비 착용률은 치과의사가 가장 높았고, 간호조무사가 가장 낮았다(P < 0.05). 4. 진료 후 손 세척 시행률은 치과의사가 가장 높게 나타났다(P < 0.05). 5. 기구의 멸균 및 소독 시행률은 치과위생사가 다른 두 집단에 비해 높았다. 6. 장비의 표면 소독은 진료용 선반 위주로 시행하고 있는 것으로 나타났으며, 치과위생사 의 실천률이 높았다.

• 대한치과마취과학회지
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• 제5권1호
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• pp.15-21
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• 2005

Autism is characterized with an abnormality of reciprocal social relatedness and of communication development. Also, autistic children show repetitive and stereotypical behavior pattern and deficiency of endurance against change. Dental problems related to autism are self-injury and trauma from accidents. Sometimes self-injury is due to discomfort resulting from restoration and local anesthesia. Also, gingivitis and multiple caries are common because of poor oral hygiene. Autistic children are anxious about visual and auditory stimuli because they don't understand the dental procedure. If the face of any changes in their daily life, their behavior becomes uncontrollable. In a setting such as the outpatient office, an autistic child's uncontrollable behavior makes it difficult to carry out proper treatment. If they need treatment under general anesthesia, it is very difficult to manage them in a ward as they are severly anxious about being admitted to a hospital. Therefore it is necessary to treat these children according to a specific management program under general anesthesia in an outpatient office. This case study reports of a 14 year old autistic teenager who although became uncontrollable because of the pain from multiple caries and from anxiety of the dental treatment eventually received treatment under general anesthesia and under conscious sedation in an outpatient office.

• Restorative Dentistry and Endodontics
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• 제48권2호
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• pp.12.1-12.11
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• 2023

Objectives: The present study evaluated the pulp response of human mandibular incisors subjected to in-office dental bleaching using gels with medium or high concentrations of hydrogen peroxide (HP). Materials and Methods: The following groups were compared: 35% HP (HP35; n = 5) or 20% HP (HP20; n = 4). In the control group (CONT; n = 2), no dental bleaching was performed. The color change (CC) was registered at baseline and after 2 days using the Vita Classical shade guide. Tooth sensitivity (TS) was also recorded for 2 days post-bleaching. The teeth were extracted 2 days after the clinical procedure and subjected to histological analysis. The CC and overall scores for histological evaluation were evaluated by the Kruskal-Wallis and Mann-Whitney tests. The percentage of patients with TS was evaluated by the Fisher exact test (α = 0.05). Results: The CC and TS of the HP35 group were significantly higher than those of the CONT group (p < 0.05) and the HP20 group showed an intermediate response, without significant differences from either the HP35 or CONT group (p > 0.05). In both experimental groups, the coronal pulp tissue exhibited partial necrosis associated with tertiary dentin deposition. Overall, the subjacent pulp tissue exhibited a mild inflammatory response. Conclusions: In-office bleaching therapies using bleaching gels with 20% or 35% HP caused similar pulp damage to the mandibular incisors, characterized by partial necrosis, tertiary dentin deposition, and mild inflammation.

• 대한치과마취과학회지
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• 제12권4호
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• pp.215-221
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• 2012

The loss of consciousness in the dental office have many causes, such as, vasodepressor syncope, drug administration, orthostatic hypotension, epilepsy, hypoglycemic reaction, acute adrenal insufficiency, acute allergic reaction, acute myocardial infarction, cerebrovascular accident, hyperglycemic reaction and hyperventilation. Patients have fainted during all phases of dental care: during tooth extraction and other surgical procedures, during local anesthetic injections, or during procedures such as venipuncture, on being seated in the dental chair, and even on first entering the dental office. If an elderly patient with known cardiovascular or cerebrovascular problems experiences a syncopal episode, differentiation from cerebrovascular insufficiency of more serious etiology, such as cerebrovascular accident, must be considered. And anaphylactic shock is also suggested during intravenous drug administration. This is a case report of syncope care during venous injection of cephalosporin in patient with cerebrovascular accident.

• 한국치위생학회지
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• 제11권3호
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• pp.405-417
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• 2011

Objectives : A precedent research has documented that indoor air pollution is closely associated with increased the risk of symptom and decreased in job satisfaction. This study was conducted in an effort to assess the relationship of indoor air quality to self-perceived symptom and satisfied with working environment. Methods : This research is based on self-filling survey which 393 dental hygienists who work in seoul and Jeon-nam area participated on October 2010 through January 2011. This survey was compared and analyzed about the level of satisfaction and subjective symptom by the indoor air quality that dental office's working environment. Results : The result of satisfaction degree of hospital working environment was pretty low about office air. Most people mentioned that they were sore and dull all over the back, shoulder, and neck. Also, they were drowsy and exhausted in work place. Conclusions : In conclusion, it is need to improve their quality of life and mental health by developing proper air conditioning system and using one in their work place.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제49권3호
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• pp.142-147
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• 2023

Objectives: As medical history before surgery is often based on patient reporting, there is the possibility that patients intentionally hide underlying diseases or that dentists cannot recognize abnormal health states. Therefore, more professional and reliable treatment processes are needed under the Korean dental specialist system. The purpose of this study was to elucidate the necessity of a preoperative blood testing routine prior to office-based surgery under local anesthesia. Patients and Methods: Preoperative blood lab data for 5,022 patients from January 2018 to December 2019 were assembled. Study participants were those who underwent extraction or implant surgery under local anesthesia at Seoul National University Dental Hospital. Preoperative blood tests included complete blood count (CBC), blood chemistry, serum electrolyte, serology, and blood coagulation data. Values outside of the normal range were considered an "abnormality," and the percentage of abnormalities among the total number of patients was calculated. Patients were divided into two groups based on the presence of underlying disease. The rates of abnormalities in the blood tests were compared between groups. Chi-square tests were performed to compare data from the two groups, and P<0.05 was considered statistically significant. Results: The percentages of males and females in the study were 48.0% and 52.0%, respectively. Of all patients, 17.0% (Group B) reported known systemic disease, while 83.0% (Group A) reported no specific medical history. There were significant differences between Groups A and B in CBC, coagulation panel, electrolytes, and chemistry panel (P<0.05). In Group A, the results of blood tests that required a change in procedure were identified even though the proportion was very small. Conclusion: Preoperative blood tests for office-based surgery can detect underlying medical conditions that are difficult to identify from patient history alone and can prevent unexpected sequelae. In addition, such tests can result in a more professional treatment process and build patient confidence in the dentist.

• 한국치위생학회지
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• 제4권2호
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• pp.209-223
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• 2004

The purpose of this study is to help dental hygienist's efficient work and 10 use this data as basic material for quality improvement of medical treatment by identify and analyze dental hygienist's job-stress and self-conception. This data was surveyed by 197 dental hygienists who working at Dental Clinic, Dentist's office, and Dental Dept on the General hospital in Daegu area. The result as follow. 1. General characters of dental hygienist who participated this survey was mostly less than 25years old and works in the Dentist's office. 2. The dental hygienist's job stress average 259, self-conception was average 3.06. 3. A stress degree by the primary factors appeared that the stress related to Role-conflict was the hygienist. On the other hand, stress related to employees was the lowest. 4. Concerning the stress of respondent's expert knowledge or technique, there exist statistically significant relations in age(p=0.000). Total period of work(p=0.000)), marriage(yes or no)(p=0.012), number of job movement(p=0.024). 5. Concerning the mutual analyze between stress by the primary factors and self-conception, there exist statistically significant relations in stress from expert knowledge or technique(p<0.05, r=0.l53), conflict with patient(p<0.001, r=0.347), conflict between dentist and patient(p<0.05, r=0.159), relationship with employee(p<0.05, r=0.l83). In conclusion, there were significant relations between job-stress and conception. The study of program development for the self-conceit, positive attitude and self-conception are highly required to help dental hygienist's efficient work.

• 대한치과기공학회지
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• 제38권3호
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• pp.119-125
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• 2016

Purpose: The purpose of this study is to evaluate the marginal gap of all-ceramic crowns fabricated by CEREC$^{(R)}$ in-office CAD/CAM system. Methods: The mandibular first molar was selected as the abutment for the experiments. Thirty working models were prepared. VITA Mark II(VM) and VITA Enamic(VE), LAVA Ultimate(LU) blocks were milled using CEREC MCXL with CEREC 3D system to construct 10 crowns for each groups. To measure marginal gap, milled restorations were examined under digital microscope with scale under 160x magnifications. The results were statistically analyzed using the one-way ANOVA and Tukey's HSD test(${\alpha}=0.05$). Results: There was no significant difference in the marginal gap regarding to ceramic materials(p>0.05). Conclusion: Single crowns fabricated using CEREC in-office CAD/CAM system provided clinically acceptable marginal gap. This confirmed that the type of ceramic material used does not determine the precision of fit of a prosthesis.