• 한국치위생학회지
• /
• 제4권2호
• /
• pp.225-236
• /
• 2004

It has been suggested in research results thai dental hygienists have high risk of carpal tunnel syndrome, mainly caused by the repeated motion of extensor and flexor or the use of vibration tools, compared to other occupations. To find out the situation of the carpal tunnel syndrome of dental hygienists, who are exposed to work-related musculoskeletal disorders, this study used 132 questionnaires given on May 22, 2004, the period of continuing education of the first half year in the Gwangju Jeonnam area, and obtained the following results. 1. Subjects worked at a dental ciinic(32.6%), a hospital(31.8%), and a public health center(35.6%). Age by work was under 24 in a clinic(17.4%) and a hospital(15.9%), and over 30 in a public health center(35.6%). 2. In practice conducted over one time a day, a scaling accounted for 90.7% in a doctor's office; 595% in a hospital; and 3.0% in a public health center, suggesting significant difference(p<0.01). Pit and fissure sealant accounted for 53.5% in a clinic; 53.2% in a hospital; and 95% in a public health center, also suggesting significant difference(p0.01). 3. Symptoms of carpal tunnel syndrome appeared in a wrist(12.1%), a right hand(14.4%), and a left hand(5.3%). 4. In case of temporary crown practice, symptoms appeared in a wrist(22.0%), a right hand(14.0%), and a left hand(4.0%), suggesting significant difference(p<0.01). The above results showed that 12.1% of dental hygienists was exposed to carpal tunnel syndrome. Thus, it is considered very important that dental hygienists should be given education of the danger of continuous work in certain motions and prevention education of improving repeated position, and make efforts to reinforce self-control ability.

• 한국치위생학회지
• /
• 제13권6호
• /
• pp.1041-1046
• /
• 2013

Objectives : The purpose of the study is to investigate the significant(SiC) index of the 12 year old children's permanent teeth caries experience. A total of 428 children aged 12 years old were recruited from metropolitan city(215 children) and rural area(213 children) in this study. SiC index was obtained from DMFT index. Data were analyzed by gender, region, and DMFT. Methods : DMFT index and Sic index were analyzed and compared by pit and sealant fissure treatment, dental caries, gender, and areas. A total of 428 children aged 12 years old were recruited from metropolitan city(215 children) and rural area(213 children) in this study. Results : Boy students(6.73) tended to have a higher SiC index than girl students(7.84). There were significant differences(p<0.05). DMFT index in urban area was 2.59, and that in rural area was 3.35. In SiC index, rural children showed a higher index(7.77) than urban children(6.72).There existed a significance between DMFT index and SiC index(p<0.05). Conclusions : It is important to educate and to develop the oral disease prevention program for the high risk group children. This study showed the relationship between DMFT index and SiC index in 12 year old children in urban and rural areas.

• 보건의료산업학회지
• /
• 제4권2호
• /
• pp.63-72
• /
• 2010

The present study purposed to prevent oral diseases and to improve oral health in children. For this purpose, we selected 70 cases who are 5~7 years old preschoolers at the kindergarten affiliated to G College in Gyeongsangbukdo, and analyzed the general patterns of oral care and the relation of the patterns with dental plaque and deciduous dental caries in the children. Specifically, we conducted oral examination and applied pit and fissure sealant according to the eruption of deciduous molar and first molar. In addition, we executed the 1st and 2nd tooth brushing instruction (TBI), and surveyed S-OHI and PHP twice. Excluding 14 preschoolers who did not appear in the 2nd survey, we performed the study with 56 preschoolers and drew conclusions as follows. 1. The number of decayed or missed or filled teeth among deciduous teeth was 3 or more in 42.9% of female children, and 46.4% of male children, so male children showed a slightly higher rate. 2. The degree of dental plaque formation was $1.64{\pm}1.22$ among the surveyed children. 3. The oral health index was lower after TBI than before in all the children (P<.001). 4. Change in the oral health index was particularly larger in 7 year old female children (p<.005). 5. The patient hygiene performance index was lower after TBI than before in both the buccal surface and lingual surface of the children (p<.005). 6. The patient hygiene performance index was lower after TBI than before in all of male children's teeth except the right maxillary first deciduous molar (p<.001).

• Restorative Dentistry and Endodontics
• /
• 제22권2호
• /
• pp.622-636
• /
• 1997

Glass ionomer cements, which had been developed in 1972, were widely used as an agent for cementation, base, pit and fissure sealant, and esthetic filling material with the advantages of excellent biocompatibility, anti-cariogenic fluoride release. Specimens were made to evaluate the color change of Glass ionomer cement with a newly developed improved Fuji II Le. Specimens for color change study with cement thickness of 1, 2, 3mm were made and those for the study of color shift pattern were made with the assumption that new mid-shade can be made by mixing of equal amount of both shades in 2mm thickness. After 24 hours in a $37^{\circ}C$ incubator, CIELAB color spaces were evaluated with a spectrophotometer. The results were as follows ; 1. All specimens discolored to dark and blue with an increased thickness in all shades (p<0.05). 2. There were significant $a^*$ space (red-green direction) changes in every A, B, C, D shade series except the relationship between 1mm and 2mm thickness groups in B shade series. But the changes were irregular, i.e., each shade series has its own pattern. 3. Each shade series showed its own specific color shift pattern in all $L^*$, $a^*$, $b^*$ spaces. 4. B shade series showed less amont of changes in ${\Delta}{\pm}E$ than those of A and C shade series (p<0.05), but there was no significant difference in ${\Delta}E$ within each shade series.

• 통합자연과학논문집
• /
• 제4권2호
• /
• pp.143-148
• /
• 2011

This study was to promote the business of school dental health program in community area and to present the improvement of oral health between public health center's group of SungDong elementary school, one that started on March 1999, and the control group that is going to operate school oral health center from 2009 in primary school. It was based on the data of more than 10 years running school based oral health section. We compared the data of SungDong group with the one of control group to get a survey of dental caries experience. The preventive effect of the caries was estimated by the difference of DMFT indices between the sample group and control group. The experience rate of caries of the sample was 12.6 percentage lower than the control group and index of the experience rate of caries for the SungDong group was two times less. It showed that the sealing rate of the SungDong group composed of pit and fissure sealant was 67.7 percentage high. The prevention rate which was calculated by DMFT index was 46.34 percentage in the SungDong group that was the highest score for the fifth grade student as a 60.5 percentage. This program contributes to the improvement of the dental caries reduction in this school oral health promotion program.

• 대한소아치과학회지
• /
• 제28권3호
• /
• pp.512-521
• /
• 2001

최근 air-abrasion기술이 새로운 법랑질 표면처리법으로 소개되고 있는데, 이것이 산부식 처리한 것보다 치면열구전색 전처리에 있어 더 나은 결과를 보이는지 연구할 목적으로, 저자들은 표면처리법 및 재료에 따른 미세누출도의 차이를 비교해 보고자 하였다. 9개의 군으로 나눈 시편치아에 산부식(1, 4, 7군), air-abrasion(2, 5, 8군), air-abrasion 후 산부식 (3, 6, 9군) 처리한 후 3종의 치면열구전색재($1\sim3$군 Teethmate-F, $4\sim6$군 Ultraseal XT plus, $7\sim9$군 : DenSeal)로 전색, 중합하여 색소침투도를 관찰하였으며, 각 시편의 전색재를 분리, 주사전자현미경으로 관찰하여 다음과 같은 결과를 얻었다. 1. 표면처리법에 따른 미세누출도는 air-abrasion군, 산부식군, air-abrasion 후 산부식군 순으로 작아졌다(p<0.05). 단, 7군과 9군간의 유의차는 없었다. 2. 미세누출도는 산부식군에서 7군 4군 1군 air-abrasion군에서 8군 5군 2군, air-abrasion후 산부식군에서 9군, 3군, 6군 순으로 작아졌으나, 각각 4군과 7군, 2군과 5군, 3군과 6군간의 유의차는 없었다. 3. SEM상에서, 산부식군은 비교적 긴 레진돌기가 규칙적으로, air-abrasion군은 짧은 레진돌기가 불규칙적으로, air-abrasion 후 산부식군에서는 이들이 혼재되어 있는 모습으로 관찰되었다.

• 대한소아치과학회지
• /
• 제36권2호
• /
• pp.305-309
• /
• 2009

치외치(Dens Evaginatus)란 교합면에 법랑질이 원추형으로 돌출되어 결절을 형성한 치아로 치아발육중 법랑기의 내측법랑상피가 외부로 과증식되거나 치수 간엽조직이 국소적으로 과증식되어 나타난다. 결절은 교합력이나 저작에 의해 파절 또는 마모되기 쉬우며 따라서 이로 인하여 치수노출에 의한 감염이 야기될 수 있다. 치외치는 예방목적으로 결절을 주기적으로 조금씩 갈아주어 2차 상아질을 유도하거나 전색제등으로 결절주위를 보강하여 자연마모를 유도할 수 있다. 반면 이미 증상을 보인 치아에 대해서는 근관치료를 시행하거나, 미완성치근인 경우 치근단유도술(Apexogenesis)이나 치근단형성술(Apexification)을 시행한다. 치근단유도술이란 생활력을 가진 미성숙 영구치의 손상, 또는 치아우식에 의한 치수노출 시 치수절단술을 시행하여 치수의 생활력을 유지시켜 정상적인 치근으로 발육하도록 유도하는 술식을 말한다. 주로 수산화칼슘을 이용한 통상의 치수절단술이 이용되고 이후 계속적인 치근형성 확인을 위해 주기적 방사선검사가 요구된다. 본 증례는 하악 좌측 제2소구치 부위의 동통을 주소로 내원한 한자에 대한 것으로, 임상검사결과 양측 소구치 부위에 치외치를 확인하게 되었다. 이에 수산화칼슘을 통한 치근단유도술을 시도하였고, 3년간 주기적 내원을 통해 치료한 결과 치근의 근심면의 비정형적 발달을 보였다. 현재 이 치아는 임상증상과 방사선 사진을 통해 확인한 결과 특이한 염증소견 없는 예후를 보이고 있기에 보고하는 바이다.

• 대한소아치과학회지
• /
• 제37권4호
• /
• pp.488-496
• /
• 2010

치외치는 교합면에 법랑질이 원추형으로 돌출되어 결절을 형성한 치아로서, 치아발육 중 법랑기의 내측법랑상피가 외부로 과증식되거나 치수 간엽조직이 국소적으로 과증식되어 나타난다. 교합력이나 저작에 의해 파절 또는 마모되기 쉬우며 따라서 이로 인하여 치수노출에 의한 감염이 야기될 수 있다. 상악 전치부 설면에도 원추형으로 돌출된 결절이 관찰되기도 하는데 이를 탈론 교두(talon cusp)라 한다. 치내치는 치아 발육 중 설측의 법랑상피가 일부 함입되어 설측에 깊은 소와가 형성된 형태로서 크기나 전체적인 모양은 정상이다. 방사선 사진상에서 치경부의 법랑질 일부가 함입되어 함입강을 형성하고 그 기저부는 치수에 가까이 위치하고 있어 치수와 개통되어 있을 가능성도 있다. 탈론 교두(talon cusp)와 치내치는 비교적 흔한 형태 이상이지만, 한 치아에 동시에 발생하는 경우는 매우 드물다. 이러한 환자에서 탈론 교두(talon cusp)가 교합력이나 저작에 의해 파절되거나, 교두 사이 열구가 우식에 이환되어 치수치료가 시행 될 때, 치내치의 복잡한 근관 형태로 인해 많은 어려움이 있다. 따라서 교합조정, 치면열구전색술 등의 예방적 처치와 주기적인 검진이 필요하고, 치수치료시 정확한 방사선학적 진단을 통한 치내치의 근관 형태 파악이 필요하다. 조선대학교 치과병원 소아치과에 내원한 10세 남아(하악 좌측 중절치)와 8세 여아(상악 우측 중절치) 그리고 7세 남아(상악 우측 중절치)에서 치내치를 동반한 탈론 교두(talon cusp)가 관찰되어 본 증례를 보고하고자 한다. 9세 남아와 8세 여아는 치수 병변으로 인해 치수 치료 중이고, 7세 남아는 병적 소견 없이 교합조정 후 관찰 중이다.

• 한국치위생학회지
• /
• 제3권1호
• /
• pp.13-24
• /
• 2003

The researcher worked with a total of 158 high school girls visiting the scaling practice room at the department of dental hygiene in Jinju Health college from November 11, 2002 to December 4, 2002, having their teeth scaled, observing their teeth and interviewing them with the aid of questionnaires. The findings can be summarized as follows. 1. The survey on the understanding of dental health and the attitudes of the subjects shows the following results : "I have never learned how to brush teeth" (65.8%: 104 girls); "I brush my teeth twice a day" (57.0%: 90 girls) : "I brush my teeth for 2 minutes"(44.3%: 70 girls): "I brush my teeth vertically and horizontally" (53.2%: 84 girls): "( brush my teeth, gum and tongue" (462%: 73 girls): "I use one brush for two months" (40.5%: 64 girls); "I don't have any floss" (582%: 92 girls): "I have never had my teeth scaled" (84.2%: 133girls) : "Smoking is bad for the teeth" (77.8%: 123 girls): "Drinking is bad for the teeth" (48.7%: 77 girls): "I have ever visited dental clinics" (92.4%: 146 girls). 2. The study on part of the teeth most exposed to caries shows the following results : Mandibular right first molar(79.8%: 126 girls): Mandibular left first molar(77.5%: 124 girls), Mandibular left second molar(70.2%: 111 girls). Mandibular right second molar(65.7%: 104 girls). Maxillary left first molar(59.5%: 94 girls): Maxillary left second molar(59.5%: 94 girls): Maxillary right first molar(58.2%: 92 girls). Maxillary right second molar(50.7%: 80 girls) 3. The statistics on the subjects' caries show the following results: DMF rate: 943%: DMFT rate: 25.61%: DMFT index: 7.17 teeth : DT rate: 4651%: FT rate: 52.25%: MT rate: 124% 4. The survey on dental caries statistics, dental health, dental health behavior, and the subjects' attitudes shows the following results: The worse the subjects' dental health was(r=-327, p<.001), the more they visited dental clinics(r=.195, p<.05), the higher DMT rate, DMFT index were; The more the subjects visited dental clinics(r =.359, p<.001), the higher DT rate was; The worse the subjects teeth went(r=-.197, p<.05), the higher MT rate was. It is necessary that systematic and substantial dental health education for high school students should be carried out in regard to plaque control, fluoride application, diet control, pit & fissure sealant as a part of developing national health policies designed for the dental health of the teenagers.

• 대한소아치과학회지
• /
• 제29권1호
• /
• pp.69-75
• /
• 2002

치과치료를 위하여 마취를 시행할 때 아동들의 주사기나 주사바늘에 대한 불편감을 감소시키기 위한 여러 방법들이 있다. 도포마취제의 사용이 한 가지 방법이다. 도포마취는 많은 임상과정, 즉 주사침 자입부위, 간단한 유치발치, 구토반응이 심한 환자에서 치과용 구내 방사선 촬영시, 인상채득 전 구토반응의 감소 목적 등으로 사용되어 왔다. 또한 소아에서 치면열구전색술과 예방심미수복술시 치아격리를 위한 러버댐 clamp의 장착은 불편감을 유발할 수 있는데, 도포마취는 이런 목적으로 러버댐 장착시 도움이 된다. 모든 구강내 도포마취제는 점막에 동등한 효과가 있다고 제안되었으나, 1980년대 개발되어 피부의 표면마취에 사용되는 EMLA(acronym for eutectic mixture of local anaesthetics)가 기존의 도포마취제보다 부착치은에 사용시 더 효과가 있다고 보고되고 있다. 본 증례에서는 침윤마취가 필요한 몇 증례에서 EMLA cream을 이용하여 국소마취를 하기 전단계, 유치 발거시, clamp 장착시, 기성관 수복 등에서 동통을 감소시킴으로써 환아의 치과 치료에 대한 불안감을 감소시키는데 매우 효과적이었기에 보고하는 바이다.