• 한국치위생학회지
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• 제10권1호
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• pp.81-92
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• 2010

Objectives : Thus this study attempted to look into the level of community residents' dental health and the state of their dental diseases and estimate the general dental health condition so that these data can be available as references in upcoming public dental health planning, and to provide fundamental data for promotion of the level of residents' dental health by performing dental health education. Methods : Among community residents who visited the department of Dental Hygiene of Shinsung University for scaling from March to May 2009, the data of total 346 subjects of 129 women and 217 men were selected, and DMFT rate, DMFT index, dental health capacity of the first permanent molar, and tooth morality rate were investigated. For statistical analysis, SPSS 14.0 was used, for general characteristics of the subjects, frequency analysis was conducted, for caries experience in the permanent teeth of the subjects, mean and standard deviation were calculated, for caries experience in the permanent teeth by sex and residence, independent t-test was performed, and for caries experience in the permanent teeth by age, one-way ANOVA was conducted. The significance level applied to these analyses was 0.05. Results : As a result of investigation and analysis on caries in the permanent teeth of community residents who visited the department for scaling in this study, the findings are as follows: 1. For sex, DMFT rate and tooth morality rate were found to be higher in women, while dental health capacity of the first permanent molar was found to be higher in men. 2. For age, DMFT rate and DMFT index were found to be highest in 40~49 years old, while DMFT rate, DMFT index, and tooth morality rate were found to be lowest in under 20 years old. Dental health capacity of the first permanent molar was found to be highest in under 20 years old, 20-29 years old, and 30-39 years old and found to be lowest in more than their sixties as 39.78 points(p<.000). Tooth morality rate was found to be highest in more than their sixties compared to other age groups.(p<.000). 3. For residence, DMFT rate and dental health capacity of the first permanent molar were found to be high in the Metropolitan area, while tooth morality rate was found to be high in Chungcheong area. Conclusions : Seen from the above-mentioned results, great importance shall be attached to the maintenance of residual teeth, and with this, efficient efforts are required to be made for upkeep and promotion of dental health.

• 대한치과의료관리학회지
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• 제6권1호
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• pp.11-18
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• 2018

The aim of this study was to evaluate the competency of the Easyperio test, a genetic test method based on real time PCR for the detection of bacteria that cause dental caries and periodontal disease. To verify the validity of this text, various dental health evaluations were administered to 33 boys between the ages of 12 to 14, as this age group commonly experiences dental caries. These evaluations included a dental caries experience survey, a first molar health evaluation, the Dentocult Streptococcus mutans (SM) strip mutans, the Dentocult Lactobacillus spp (LB) test, and the Easyperio test. The correlation coefficients between the level of the Dentocult SM strip mutans and the dental caries experience were DT (R=0.570, p=0.001), DMFT (R=0.376, p=0.031), and first molar health (R=-0.395, p=0.023). The correlation coefficients between the amount of SM in the Easyperio test and dental caries experience were DT (R=0.528, p=0.002), DMFT (R=0.369, p=0.035), and first molar health (R=-0.426, p=0.013). The correlation coefficients between the level of the dentocult SM strip mutans and the SM amounts of the Easyperio test were S.mi (R=0.564 p=0.001) and S.mu (R=0.621, p=0.002). The correlation coefficients between the level of the Dentocult LB test and the SM amount of Easyperio test was S.mi (R=0.495, p=0.003). In conclusion, Easyperio test may be an easy and effective method for the differentiation and diagnosis of dental caries through quantitative and qualitative analysis of oral bacteria.

• 대한치과기공학회지
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• 제8권1호
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• pp.91-99
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• 1986

In order to evaluate the community dental health level the actual health capacity of the lower-first permanent molar is suitable as a indicator for assessment. So we had surveyed decayed, missed and filled lower permanent first molar of 460 persons who were in the age from 20 to 29 in Iri City. The obtained results were as follows: 1. The DMFT indices of the lower first permancent molars showed in 1.40 in the age group of from 20 to 24 and 1.44 from 25 to 29. 2. The actual dental health capscities of the lower first permanent molars showed in 84.86% in the age group of from 20 to 24 and 81.03% from 25 to 29. 3. The DMF indices of the lower first permanent molars showed 15.15% in the age group of from 20 to 24 and 18.98% of from 25 to 29. 4. The DMF rates of the lower first permanent molars showed 85.66% in the age group of from 20 to 24 and 88.70% of from 25 to 29. 5. The DMF rates of the lower first permanent molars showed 70.00% in the age group of from 20 to 24 and 71.96% of from 25 to 29. 6. The DT rates of the lower first permanent molars showed 48.84% in the age group of from 20 to 24 and 39.55% of from 25 to 29. 7. The FT rates the lower first permanent molars showed 40.22% in the age group of from 20 to 24 and 43.98% of from 25 to 29. 8. The MT rates of the lower first permanent molars showed 10.94% in the age group of from 20 to 24 and 16.17% of from 25 to 29.

• 치위생과학회지
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• 제5권2호
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• pp.71-76
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• 2005

이 연구는 상수도수불화사업이 구강건강상태에 미치는 영향을 파악하여 향후 상수도수불화사업 수행의 기초 자료를 마련하고자 하였다. 상수도수불화지역인 청주시 상당구, 상수도수비불화지역인 안양시 만안구를 대상지역으로 하였으며, 2003년도 7월 3일부터 7월 22일까지 청주시 상당구 C초등학교와 안양시 만안구 A초등학교 5-6학년 학부모를 대상으로 상수도수불화에 대한 설문지 조사와 초등학교 5-6학년 학생을 대상으로 구강검사를 실시하였다. 그 결과는 다음과 같다. 1. 우식경험영구치지수(DMFT index)는 청주 1.69개, 안양이 2.11개로 상수도수불화지역인 청주에서 낮았다(P=.010). 2. 우식경험영구치율(DMFT rate)은 청주 6.72%, 안양 7.94% 로 상수도수불화지역인 청주가 낮았다. 3. 제1대구치건강도는 청주 95.54%, 안양이 94.10%로 상수도수불화지역인 청주에서 높았다(P=.002). 이 연구는 상수도수불화사업의 효과를 분석함으로써, 상수도수불화사업이 구강상태에 미치는 영향을 파악하고, 이에 대한 구강건강증진을 향상에 기초 자료를 제시하는데 의의가 있다. 국민구강건강증진은 아울러 구강건강보험재정의 비용절감과 연관이 있다고 사료되며, 이를 위하여 전국 모든 지역에 상수도수사용을 확대 실시하여, 상수도수와 불소화에 대한 적극적인 홍보와 교육을 통한 신뢰 구축이 추가적으로 필요하다고 생각된다.

• The Journal of Advanced Prosthodontics
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• 제11권3호
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• pp.147-154
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• 2019

PURPOSE. This study aimed to evaluate the effect of two different implant-abutment connection structures with identical implant design on peri-implant bone level. MATERIALS AND METHODS. This clinical study was a patient-blind randomized controlled trial following the CONSORT 2010 checklists. This trial was conducted in 24 patients recruited between March 2013 and July 2015. Implants with internal friction connection were compared to those with external hex connection. One implant for each patient was installed, replacing the second molar. Implant-supported crowns were delivered at four months after implant insertion. Standardized periapical radiographs were taken at prosthesis delivery (baseline), and one year after delivery. On the radiographs, distance from implant shoulder to first bone-to-implant contact (DIB) and peri-implant area were measured, which were the primary and secondary outcome, respectively. RESULTS. Eleven external and eleven internal implants were analyzed. Mean changes of DIB from baseline to 1-year postloading were 0.59 (0.95) mm for the external and 0.01 (0.68) mm for the internal connection. Although no significant differences were found between the two groups, medium effect size was found in DIB between the connections (Cohen's d = 0.67). CONCLUSION. Considering the effect size in DIB, this study suggested the possibility of the internal friction connection structure for more effective preservation of marginal bone.

• 한국융합학회논문지
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• 제9권4호
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• pp.303-311
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• 2018

장애인과 보호자와의 관계 유형에 따른 장애인의 구강건강상태의 관련성을 알아보고자 장애인 보호자에게 장애인과 보호자의 응집력과 의사소통과정을 자기기입식으로 설문 조사하였고, 장애인의 구강건강상태는 DMFT index, 제1대구치 건강도, Pocket depth로 평가표를 작성하여 총 78부를 분석하였다. 통계프로그램은 SPSS win. 24.0을 이용하였으며 유의수준은 .05에서 검증하였다. 장애인과 보호자와의 관계 유형에 따른 장애인과 보호자의 응집력(p<.01), 의사소통과정(p<.01)에서 유의한 결과를 보였다. 장애인의 구강건강상태에서는 DMFT index(p<.01), 제1대구치 건강도(p<.01), Pocket depth(p<.01)에서 유의한 결과를 보였다. 따라서 장애인에게 어머니는 응집력, 의사소통과정, 구강건강상태 등 대부분의 항목에서 긍정적인 영향을 미치는 것으로 나타났다. 반면 장애인과의 응집력, 의사소통과정 등에서 낮은 영향을 미친 활동보조인력과 장애인의 구강건강상태에 낮은 영향을 미친 배우자에게는 장애인과 보호자의 관계 중요성을 제시함으로써 장애인 구강건강관리법 및 관심도를 높일 수 있는 정책적 지원 및 연구가 필요할 것으로 사료된다.

• Imaging Science in Dentistry
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• 제43권2호
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• pp.85-90
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• 2013

Purpose: This study was performed to determine the buccal alveolar bone thickness following rapid maxillary expansion (RME) using cone-beam computed tomography (CBCT). Materials and Methods: Twenty-four individuals (15 females, 9 males; 13.9 years) that underwent RME therapy were included. Each patient had CBCT images available before (T1), after (T2), and 2 to 3 years after (T3) maxillary expansion therapy. Coronal multiplanar reconstruction images were used to measure the linear transverse dimensions, inclinations of teeth, and thickness of the buccal alveolar bone. One-way ANOVA analysis was used to compare the changes between the three times of imaging. Pairwise comparisons were made with the Bonferroni method. The level of significance was established at p<0.05. Results: The mean changes between the points in time yielded significant differences for both molar and premolar transverse measurements between T1 and T2 (p<0.05) and between T1 and T3 (p<0.05). When evaluating the effect of maxillary expansion on the amount of buccal alveolar bone, a decrease between T1 and T2 and an increase between T2 and T3 were found in the buccal bone thickness of both the maxillary first premolars and maxillary first molars. However, these changes were not significant. Similar changes were observed for the angular measurements. Conclusion: RME resulted in non-significant reduction of buccal bone between T1 and T2. These changes were reversible in the long-term with no evident deleterious effects on the alveolar buccal bone.

• Journal of Nutrition and Health
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• 제50권1호
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• pp.98-110
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• 2017

본 연구에서는 2007년부터 2010까지의 국민건강영양조사 자료를 이용하여 한국 성인의 칼륨 섭취량, 나트륨과 칼륨의 섭취 몰 비율 (molar ratio)을 비교분석하고 칼륨의 급원 식품군과 식품, 건강지표들과 칼륨의 섭취 수준과의 관계를 알아보았다. 모든 통계분석은 변수에 국민건강영양조사 자료에서 제공하는 가중치를 적용하였으며, 복합표본설계 일반선형모형을 이용하였다. 칼륨의 1일 평균 섭취량은 남성은 충분섭취량에 근접하고 있었으나 여성에서는 충분섭취량을 크게 밑돌고 있었으며 남녀 모두 20~64세 연령층에 비하여 65~74세 연령층에서 높았다. 나트륨과 칼륨 섭취량의 몰 비율 (molar ratio)은 남성이 2.89~3.23로 여성 (2.62~2.95)에 비해 높았고, 남녀 모두 50세 이후 연령층의 Na/K 몰 비율 (molar ratio)이 낮고 20~49세 연령층에서 높게 나타났다. 한국인이 섭취하는 칼륨의 급원식품 중 기여도가 높은 식품군은 조사 시기, 성별, 연령층에 무관하게 채소군이었으며, 그 기여도는 전체의 28~33%로 전체 칼륨 섭취량의 1/3을 차지하였다. 그 다음으로 기여도가 큰 식품군으로 곡류, 과일류, 육류 등이었다. 기여도가 높은 식품은 백미와 배추김치였고, 감자-참외-고구마-미역-무-사과-검정콩 등이 그 다음 순으로 조사되었다. 칼륨 섭취수준을 사분위로 나누어 건강지표들과 관련성을 보았을 때 칼륨 섭취 수준이 증가할수록 50~64세 여성수축기 혈압이 유의하게 감소하였고 (p < 0.01), 1사분위군 (1일 평균 1,851.2 mg 이하 섭취자)의 수축기 혈압은 4사분위군 (1일 평균 3,602.2 mg 이상 섭취자)의 수축기 혈압보다 3.6 mmHg 높았다. 또한 동일 연령대의 여성에서 혈중 중성지방의 농도가 1사분위군에서 가장 높았고, HDL-콜레스테롤의 농도는 칼륨섭취량이 많을수록 증가하였다 (p < 0.05). 본 연구결과, 칼륨섭취량은 식사섭취량에 따라 변화하므로 특히 성별열량 섭취량에 따라 영양섭취기준을 달리 설정하는 것도 고려해 볼 여지가 있으며 칼륨 섭취를 높이고 나트륨의 섭취를 줄일 수 있는 한국식 DASH diet의 개발이 필요할 수 있음을 시사한다.

• 대한치과교정학회지
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• 제46권4호
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• pp.212-219
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• 2016

Objective: The purpose of this study was to evaluate treatment effects after distalization of the mandibular dentition using ramal plates through lateral cephalograms. Methods: Pre- and post-treatment lateral cephalograms and dental casts of 22 adult patients (11 males and 11 females; mean age, $23.9{\pm}5.52years$) who received ramal plates for mandibular molar distalization were analyzed. The treatment effects and amount of distalization of the mandibular molars were calculated and tested for statistical significance. The significance level was set at p < 0.001. Results: The mandibular first molar distalization at the crown and root were 2.10 mm (p < 0.001) and 0.81 mm (p = 0.011), respectively. In the evaluation of skeletal variables, there was a significant increase in the Wits appraisal (p < 0.001). In the evaluation of the soft tissue, there was no significant effect on upper lip position, but the lower lips showed a significant retraction of 2.2 mm (p < 0.001). Conclusions: The mandibular molars showed a significant amount of distalization accompanied by limited extrusion and mesiobuccal rotation of the crowns. A ramal plate may be a viable device for mandibular total arch distalization in Class III patients who are reluctant to undergo orthognathic surgery.

• 치위생과학회지
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• 제11권3호
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• pp.155-161
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• 2011

본 연구는 치근단 필름 촬영에 있어서 촬영법에 따른 실책율을 살펴봄으로써 향후 효율적인 촬영기술 습득과 학생의 지도를 위한 기초 자료를 얻고자 시행되었다. 2009년 3월부터 2010년 12월까지 D 보건대학 및 S 보건대학 치위생과 학생들을 대상으로 촬영한 필름 14,402매를 분석하고, 등각촬영법과 평행촬영법의 촬영 실습수업을 이수한 학생 263명을 대상으로 현상과정에서 가장 어려웠던 점에 관한 설문조사를 실시하여 다음과 같은 결과를 얻었다. 1. 등각촬영법으로 촬영한 경우 상 하악 모두 대구치부에서 실책율이 가장 높았다. 2. 평행촬영법으로 촬영한 경우 상악에서는 소구치부, 하악에서는 대구치부에서 실책율이 가장 높았다. 3. 촬영기술상의 실책은 등각촬영법과 평행촬영법 모두 필름위치의 부정확이 가장 높게 나타났으며, 등각촬영법이 평행촬영법에 비해 실책율이 높게 나타났다. 4. 현상기술상의 실책은 등각촬영법과 평행촬영법 모두 어두운 상과 밝은 상이 가장 높게 나타났으며, 등각 촬영법이 평행촬영법에 비해 실책율이 높게 나타났다. 5. 학생들은 현상과정에서 현상의 정도를 파악하는 것을 가장 어려워하는 것으로 나타났다. 이상의 결과로 살펴볼 때, 치근단 촬영 시 실책율을 줄이기 위해서는 구강 내 형태학적, 해부학적 구조의 이해가 필요하며, 충분한 시간을 가지고 여러 번 반복 촬영하여 숙련도를 높이는 것이 중요하다고 생각된다.