• 한국의학물리학회:학술대회논문집
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• 한국의학물리학회 2002년도 Proceedings
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• pp.294-297
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• 2002

For the quality control procedure of diagnostic x ray units, a method for simultaneous measurement of air kerma, half value layer and tube potential was developed utilizing a computed radiography system for intraoral radiography and film badge case. The response of average pixel values under the windows were calibrated by x rays generated at tube potentials from 40 to 140 kV with filtration from 1.5 to 3.7 mmAl. The calibration curves for half value layer and tube potential were derived as functions of attenuation factors by the 1.4 mmAl filter and the 0.2 mmCu filter. The energy dependency of the open window response was corrected by the calibration factor as a function of the attenuation factor by the 1.4 mmAl filter. The uncertainty of the estimated half value layer, tube potential and air kerma were 0.2 mmAl, 3.6 % and 5 %, respectively. It was thus suggested that this system could be applied to quality control program to detect the variation of working condition of x ray units in clinical use.

• 한국산학기술학회논문지
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• 제18권2호
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• pp.123-129
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• 2017

본 연구는 국민건강영양조사 제6기 원시자료 중 구강 검진조사로 이루어진 구강보철물 상태 조사를 활용하였다. 만 19세 이상 성인을 대상으로 교육수준별로 실제 구강건강 상태가 어떠한지를 보고자, 구강 내 현존하는 보철물 상태와 가공의치, 틀니 등의 필요도를 비교 분석하였다. 연구결과로 인구사회학적 특성에서 여자가 남자에 비해 교육수준이 초등졸업 이하가 32.2%로 현저히 낮았고, 연령대가 증가할수록 교육수준이 점점 낮아졌으며, 통계적으로 유의한 차이를 보였다. 소득수준에서는 대학 졸업이상이 소득수준 '상'에 45.3%로 가장 높게 나타났고, 대학 졸업이상의 교육수준에서 전문가 직업군이 77.4%로 월등히 높았으며 통계적으로 유의한 차이를 보였다. 교육수준에 따른 상 하악의 구강 내 보철물 상태에서는 초등학교 졸업 이하의 수준에서 전체적으로 구강내 보철물이 가장 많이 존재하고 있었고, 부분틀니. 완전틀니 필요도에서도 초졸 이하의 교육수준에서 가장 높았으며, 통계적으로 유의한 차이를 보였다. 고정성 가공의치 필요단위 수에서는 상악에서는 초등학교 졸업이하의 교육수준에서 가장 높았지만, 하악에서는 중학교 졸업 수준에서 가장 높았고, 유의미한 차이를 보였다.

• 한국치위생학회지
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• 제8권2호
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• pp.39-51
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• 2008

The research was conducted to 100 child patients selected by random sampling, which got a Dentocult-SM test in the first visit and then was being continuously managed, out of child patients of a pediatric clinic located in Gyeonggi-do. The period of there search is one year from June 2007 to May 2008, Using Dentocult-SM test, we analyzed the correlation between the distribution of dental plaque, a streptococcus mutans in saliva and condition of dental caries cavity in the teeth of child patients, then we measured the distribution of a streptococcusmutans. According to SM score, we applied incremental oral heath care for child patients to clinical and obtained the following results, 1. In terms of the age of child patients in research, the number of 3 years old patients was 29(lst ranked), the number of 2 years old patients was 28(2nd ranked). 2. The result of SM score showed that female child patients(52.0%) was higher than male ones in negative, male child patients(52.0%) was higher than female ones in mild, female child patients(68.2%) was higher than male ones in moderate, male child patients(57.1%) was higher than female ones in severe. 3. At the first visit, the SM score showed statistically remarkable difference between dt and dmft. We can also confirm the average of severe is the highest. 4. At the second visit, the SM score showed statistically remarkable difference among dt, ft, and dmft index We can also confirm the average of severe is the highest. 5. At the third visit, The SM score showed statistically remarkable difference among dt, ft, and dmft index We can also confirm the average of severe is the highest. 6. The comparison of dmft index differences to SM score showed statistically no remarkable difference in incremental oral heath care for negative and mild, In addition to that, we can confirm that the incremental oral heath care makes statistically remarkable differences in moderate and severe. 7. The comparison of dt index differences to SM score showed statistically no remarkable difference in incremental oral heath care for negative, mild, and moderate, In addition to that, we can con firm that the incremental oral heath care makes statistically remarkable differences in severe. 8. The comparison of mt index differences to SM score showed statistically no remarkable difference in incremental oral heath care for mild and moderate, In addition to that, we can confirm that the incremental oral heath care makes statistically remarkable differences m severe. 9. The comparison of ft index differences to SM score showed statistically no remarkable difference in incremental oral heath care for mild, In addition to that, we can confirm that the incremental oral heath care makes statistically remarkable differences in negative, moderate, and severe. 10. According to the comparison of dmft index to the age, the 4 years old patients showed the highest number(5.50 in the first visit and 6,08 in the second one). In the third visit, the 6 years old patients showed the highest number(7.00). By the above results, we can find that the incremental oral heath care by SM score makes the results of oral care better. Therefore, the improvement or maintenance in oral health of child patients needs continuing personal oral health management and regular systematic management focused on prevention by the specialist.

• 대한장애인치과학회지
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• 제3권1호
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• pp.11-16
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• 2007

The use of general anesthesia as a special method of behavior management is necessary if certain handicapped or disabled child patient to receive dental treatment. This study was designed to report the results of 53 cases of complete oral rehabilitation under general anesthesia. The data were obtained from patients who were provided with dental treatment under general anesthesia for last 3years managed at the Dept. of pediatric dentistry in PNU Hospital. The distribution of age, gender, primary reason for general anesthesia, duration of dental procedure, number of treated tooth and periodic recall check-up were surveyed. In distribution of age, most(78%) were younger than 10 years and mean was 13.0 years. The reasons for providing general anesthesia were lack of cooperation due to various mental and physical handicapped situation(74%), congenital heart disease(13%), combined with medically compromised and behavior problem and others. The average duration of the treatments was 2 hours and 41 minutes and average duration of the anesthesia was 3 hours and 6minutes. The mean number of treated with restoration a children were 16.7 teeth. From the results, total dental rehabilitation under general anesthesia is a favorable modality to improve for disabled children's oral condition.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제41권6호
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• pp.293-298
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• 2015

Objectives: Infection involving the orbit, zygomatic space, lateral pharyngeal space, or hemifacial and oral floor phlegmon is referred to as cervicofacial infection (CFI). When diagnosis and/or adequate treatment are delayed, these infections can be life-threatening. Most cases are the result of odontogenic infections. We highlight our experiences in the management of this life-threatening condition. Materials and Methods: This was a retrospective study of patients who presented with CFI from December 2005 to June 2012 at the Oral and Maxillofacial Surgery Clinic or the Accident and Emergency Unit of Ahmadu Bello University Teaching Hospital (Zaria, Nigeria). The medical records of all patients who presented with either localized or diffuse infection of the maxillofacial soft tissue spaces were retrospectively collected. Data collected was analyzed using SPSS version 13.0 and are expressed as descriptive and inferential statistics. Results: Of the 77 patients, 49 patients (63.6%) were males, a male to female ratio of 1:7.5. The ages ranged from two years to 75 years with a mean of $35.0{\pm}19.3$ years, although most patients were older than 40 years. The duration of symptoms prior to presentation ranged from 6 to 60 days, with a mean of $11.0{\pm}9.4$ days. More than 90% of the patients presented to the clinic within the first 10 days. The most commonly involved anatomical space was the submandibular space (n=29, 37.7%), followed by hemifacial space (n=22, 28.6%) and buccal space (n=7, 9.1%). Ludwig angina accounted for about 7.8% of the cases. Conclusion: CFI most commonly involves the submandibular space, typically affects individuals with a low level of education, and is influenced by traditional medical practices. Despite improved health care delivery, CFI remains a significant problem in developing countries.

• 한국치위생학회지
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• 제11권6호
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• pp.1027-1038
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• 2011

Objectives : This study carried out the agreement of old people who visited senior citizens' centers in section area from January 5to 15, 2010. This study aimed to arrange basic data for the development in oral health and for the elderly oral health program, by surveying on regular level and food habit in the eating habits of the elderly. Methods : The regular level of dietary life, meal volume, meal time, kinds of meal preference, the appearance of snack intake, and kinds in snack preference were analyzed by using the statistical processing SPSS WIN 18 targeting totally 140 subjects, by preparing 1:1 questionnaire through direct interview. Results : The regular level of dietary life in the elderly was surveyed to be regular in 76.4% of the whole and to be irregular in 23.6%. As for the daily meal volume of the elderly, it was indicated to be 36.4% for 'eating proper volume' and to be 51.4% for 'eating a little.' As for the meal time of the elderly, it was indicated to be 52.1% for under 10 minutes and to be 25% for having a meal for 16~20 minutes. In the results of having surveyed on kinds of meal preference in the elderly, it was indicated to be 57.7% for having a meal 'centering on vegetables.' In the survey on snack intake of the elderly, it was indicated to be 62.1% for 'enjoying eating snack.' As for snack kinds of being preferred, 69.3% of the elderly were indicated to be the highest in 'fruits.' Conclusions : The elderly meals on a regular basis as needed by vegetarian diet, however showed thar eating a very short time. I consider it is necessary that study on connection between old people meal time, eating habits and oral physical condition.

• 한국치위생학회지
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• 제20권5호
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• pp.623-633
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• 2020

Objectives: Since scaling has been covered by insurance, the number of patients undergoing scaling has increased. Simultaneously, legal disputes around scaling have increased. Therefore, this study was aimed at comparing the differences between the perceptions of dental hygienists and patients regarding the scaling procedure and providing dental hygienists with basic data to find ways to reduce disputes arising from these differences. Methods: A survey was conducted on 119 dental hygienists working in Busan and the South Gyeongsang Province and 110 patients who visited hospitals for scaling. Frequency analyses were performed for dental hygienists' scaling behavior and patient discomfort during scaling. The independent t-test and chi-square test were performed to compare the perceptions of dental hygienists and patients regarding the scaling procedure. Results: Polishing after scaling was performed according to 70.1% of dental hygienists but only 29.9% of patients. Oral health education was provided according to 20.4% of dental hygienists, while 79.6% of patients said that they received oral health education at the Dentiform. The scaling time was reported to be shorter by patients than by dental hygienists. Both dental hygienists and patients said that legal action was required if problems occurred during scaling, and the refund standard was that patients needed it more than dental hygienists. Conclusions: There are differences between the perceptions of dental hygienists and patients regarding scaling. Dental hygienists should identify these differences and try to prevent conflicts or disputes with patients around scaling.

• Journal of Korean Academy of Oral Health
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• 제42권4호
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• pp.238-241
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• 2018

Williams syndrome is a rare congenital disorder with various physical abnormalities and characterized by facial, oral, and dental features. Individuals with Williams syndrome typically have eating disorders in the early childhood, which lead to prolonged night feeding. Prolonged night feeding is a risk factor for rampant dental caries. Williams syndrome is caused by the microdeletion of chromosome 7, resulting in elastin deficiency. Elastin is integral to cardiovascular health. Many patients with Williams syndrome have complex cardiovascular abnormalities that must be considered a part of dental management. Complications related to cardiovascular diseases may induce adverse effects such as dangerously elevated blood pressure. This may occur in patients during stressful dental treatment. In addition, characteristics of auditory hyperalgesia and anxiety disorders among patients with William syndrome, complicate receiving routine dental management. Therefore, dental treatment under sedation or general anesthesia may be preferable for patients with Williams syndrome; in particular, patients who are very uncooperative and/or needs extensive dental treatment. A thorough evaluation of each patient's physical condition is required before making decisions regarding dental treatment. Careful monitoring and preparation for emergencies are very important during and shortly after dental treatment under general anesthesia or sedation. Monitoring is critical until vital signs have stabilized and return to normal. A 28-month-old man diagnosed as having Williams syndrome, visited the Dental Hospital of ${\bigcirc}{\bigcirc}$ University for the management of rampant dental caries. We reported on the management of this patient who had peripheral pulmonic stenosis, and received dental treatment under general anesthesia. We also reviewed the characteristics of Williams syndrome and discussed considerations for dental treatment under general anesthesia.

• 대한치과기공학회지
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• 제2권1호
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• pp.25-27
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• 1980

In the process of arranging artificial teeth the simple atracing technique was shown to be more precise and convenient for general use in dental clinic than gothic arch tracing. The simple tracing technique had some advantages over other ones in that they were very useful to check protrusive, lateral and central occlusion of mandible movement, and it was very easy to transfer the oral condition and mandible movements precisely onto the articulator. Also the technique was more effective than when using wax bite in that the functional movement range has shifted to 0.2 - 0.4mm form central occlusion.

• 대한치과의사협회지
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• 제17권2호통권117호
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• pp.129-135
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• 1979

This 27 year-old male patient had severe mandibular prognathism (right and left mesio-occlusion were 0.4㎝ and 1.2㎝ , respectively). He had good oral health relatively exception of missing teeth. We examined all of his oral and skeletal status with full mouth x-ray taking, study model, and cephalogram. His general condition was good but above examination indicated the surgical operation for the mandibular prognathism. His laboratory tests were within normal limits. We determined surgical operation which was done by extraoral approach bilaterally. Incisions were made bilaterally 1.5㎝ beneath the inferior border of the mandible in the selected area and then the inferior border of the ascending rami was exposed. Retracting the periosteum to the lingual and buccal a slight amount, the cut in the bone was performed by use of bone drill. Avoiding T.M.J. troubles, the proximal segmant was not fixed to anterior segment, being in overlapping state buccally, in order to expect a natural healing by the environmental muscles and ligaments. We had immobilization with intermaxillary fixation by using the multiple Stout's method. He was discharged 17 days after operation. His general condition and operation results were good and satisfactory.