광주광역시 치과위생사의 직무분석에 관한 조사 연구

하명옥 ( Myung Ok Ha ),윤헤정 ( Hye Jeong Youn ) 한국치위생학회 2010 한국치위생학회지 Vol.10 No.5

유치원 아동 대상 계속구강건강관리 효과

하명옥 ( Myung Ok Ha ),조민정 ( Min Jung Cho ),김은미 ( Eun Mi Kim ) 한국치위생학회(구 한국치위생교육학회) 2013 한국치위생학회지 Vol.13 No.2

Objectives: The purpose of this study was to evaluate the effects of incremental dental care(IDC) program on kindergarten children. Methods: The subjects were 46 kindergarten children aged 6 who wished participation in IDC program during 5 weeks at oral health center in G-college from March to May, 2012. The data of subjects were examined into oral conditions such as toothbrushing method and frequency, modified O`leary plaque index and dental caries activity before and after IDC program. The collected data were analyzed by SPSS statistical package version 19.0. Results: 1. The rolling and fones methods of toothbrushing increased from 10.8% to 91.3% after IDC program(p<.001). The change of toothbrushing frequency showed that over 3 times a day increased from 52.2% to 76.0% after IDC program(p<.01). 2. The modified O`leary plaque index of before toothbrushing education increased from 1st visit(score 32.19) to 5th visit(score 57.14) and after toothbrushing education increased from 1st visit(score 64.45) to 5th visit(score 78.27) during IDC program(p<.001). 3. As a results of dental caries activity test before and after IDC program, it was found that the bacterial numbers in S.mutans and Latobacillus reduced from 0.74, 0.70 to 0.28, 0.41 (p<.01) and the saliva buffering capacity increased from 1.50 to 2.02(p<.001). Conclusions: It is considered very necessary that IDC program should be maintained and extended to dental clinic so as to enhance the oral health state of kindergarten children.

죽염함유치약의 법랑질 내산성 증진효과

하명옥 ( Myung Ok Ha ),최충호 ( Choong Ho Choi ),윤혜정 ( Hye Jeong Youn ),홍석진 ( Suk Jin Hong ) 대한예방치과·구강보건학회 2010 大韓口腔保健學會誌 Vol.34 No.4

Objectives. The aim of this study was to investigate the effect on the acid resistance of enamel after use dentifrice containing bamboo salt. Methods. Incipient caries lesion of bovine enamel was formed in pH 5.0 lactate carbopol buffer system for 60 hours. Then, experiment groups were divided (n=12/group) into four groups without statistical difference of Vickers hardness number (VHN) and were carried out under pH cycling model for 20 days as follows; fluoride free dentifrice (negative control), 1,000 ppm NaF dentifrice (positive control), 1,100 ppm NaF dentifrice (P&G Crest Cavity Protection) and 3.0% bamboo salt with 1,000 ppm NaF dentifrice (test dentifrice). Then, all specimens were immersed in acid solution which used incipient caries formation for 60 hours. Mineral loss value (ΔZ:vol%ㆍμm) and lesion depth (Ld:μm) of specimens were assessed by transversal microradiography (TMR). Results. After chemical pH cycling, the ΔZ of test dentifrice showed lower value than other groups but there was no significant difference among groups. The Ld of test dentifrice (61.59±6.58), P&G Crest Cavity Protection (64.56±6.31) and positive control (67.94±8.46) showed statistically significant lower than negative control (74.68±10.62) (p<0.01). After acid treatment, ΔZ of test dentifrice (2,403.62±448.10), P&G Crest Cavity Protection (2,459.24±412.22) and positive control (2,782.54±535.12) showed statistically significant lower than negative control (3,421.45±582.80)(p<0.001). Also, Ld of test dentifrice (66.51±9.86), P&G Crest Cavity Protection (69.43±10.23) and positive control (79.69±14.59) showed statistically significant lower than negative control (113.41±9.65)(p<0.001). Conclusions. The dentifrice containing NaF and bamboo salt showed acid resistance effect, thus it could be useful agent for prevention of dental caries.

초기우식법랑질 표면 하방에 미치는 죽염의 재광화 효과

김애옥,김경희,하명옥,Kim, Ae-Ok,Kim, Kyung-Hee,Ha, Myung-Ok 한국치위생학회 2017 한국치위생학회지 Vol.17 No.5

Objectives: The aim of this study was to investigate the effects of bamboo salts on remineralization effects on subsurface of artificial carious enamel. Methods: Incipient carious enamel was formed in permanent bovine incisors and then specimens were divided into three groups randomly: 3% bamboo salt (BS), 2% (NaF) and the solution of mixed 3% BS and 2% NaF. For remineralization, specimens of each of the three groups were treated for 24 hrs at $37^{\circ}C$ incubator. After treatment, specimens were analyzed using SEM and VHN. Statistical analysis used was one-way ANOVA. Results: In SEM observation, the BS group showed narrower distances between enamel rods than the cases of incipient subsurface caries enamel. The NaF and BS+NaF groups showed that the enamel rods near the surface were destructed, and innumerable round small particles were deposited near the surface of enamel. The BS+NaF group showed more minerals attachment between enamel rods than the cases of other groups. The differences in subsurface microhardness (${\Delta}VHN$) increased all of three groups in total by $80{\mu}m$. The ${\Delta}VHN$ of the BS+NaF group increased significantly more than NaF and BS groups in depth of $50{\mu}m$, $80{\mu}m$. Conclusions: The 3% bamboo salt with 2% NaF solution was found to increase subsurface hardness of incipient caries enamel. Thus, bamboo salt will be used to contribute to prevention on dental caries.

일부지역 노인요양기관 종사자의 구강보건지식 및 교육 필요도

박지일,정경이,하명옥,Park, Ji-Il,Jeong, Kyung-Yi,Ha, Myung-Ok 한국치위생학회 2017 한국치위생학회지 Vol.17 No.5

Objectives: The purpose of this study is to analyze the oral health knowledge among workers at nursing homes, and needs to educate them on elderly oral care. Methods: A self-reported questionnaire was filled out by 241 workers at nursing homes in Gwangju and Jeonnam, Korea from May to June, 2016. The data were analyzed with the SPSS 19.0 program for independent t-test or one-way ANOVA analysis. Results: The data analysis showed that workers at nursing homes had lower knowledge about periodontal diseases (65.1%) than about denture management (78.5%). The knowledge of periodontal disease and denture management of workers with experience of oral care education for elderly was significantly higher than that of non-experienced ones (p<0.01). On the question whether those workers should get oral health care education is necessary or not, respondents answered positively (They scored 4.10 points on the 5-point Likert scale from 1 point - Not at all to 5 points - definitely yes). Conclusions: It is necessary to provide elderly oral care education to workers at nursing homes. Furthermore, oral health professionals should be deployed for systematic and practical oral care for elderly.

수종의 생약 헥산분획 추출물에 의한 Streptococcus sobrinus 억제 효과

윤혜정 ( Hye Jeong Youn ),하명옥 ( Myung Ok Ha ),이경희 ( Kyung Hee Lee ),박영남 ( Young Nam Park ),조민정 ( Min Jeong Cho ) 한국치위생과학회 2007 치위생과학회지 Vol.7 No.3

인공치면세균막 제거 방법에 의한 RBM 처리 임플란트의 표면거칠기 변화

오희균 ( Hee Kyun Oh ),하명옥 ( Myung Ok Ha ),정성숙 ( Seong Soog Jeong ),정은주 ( Eun Ju Jung ),최충호 ( Choong Ho Choi ),홍석진 ( Suk Jin Hong ) 대한예방치과·구강보건학회 2009 大韓口腔保健學會誌 Vol.33 No.2

Objective: The objective of this study was to evaluate the change in the surface roughness that is being produced by physical or chemical materials for removing of dental plaque from the surface of an RBM(resorbable blasting media)- treated implant. Methods: The RBM treated implant discs were used after artificial plaque was formed by Streptococcus mutans. This study is composed of one control, three physical and three chemical methods that were used to remove dental plaque. The physical methods applied on the RBM implant were prophyflex, professional mechanical tooth cleaning and interdental brushing. The chemicals methods applied to remove plaque on the RBM implants were 0.1% chlorhexidine, citric acid and HCL tetracycline. Each disc was sonically cleaned, air dried, and measured by a profilemeter and a scanning electronic microscope (SEM). Results: There were no statistically significant differences between the control group (1.671±0.11) and each of the other groups (physical: 1.614±0.12, chemical: 1.624±0.09) in the surface roughness values (Ra:μm) after the methods of oral hygiene treatment (p>0.05) have been applied. SEM analysis showed that after each of the oral hygiene treatment methods, all of the groups looked like the original RBM implant surface as hydroxyapatite particles with irregular shapes and sizes were adhered to the surface of the RBM implants. Conclusion: The RBM implant surface was not affected by the six cleaning methods used in this study. These methods are all able to safely remove the plaque or calculus on RBM implants.

치실 종류에 따른 치면세마 시행에 대한 불소도포 효과

김경희 ( Kyung-hee Kim ),하명옥 ( Myung-ok Ha ),홍남희 ( Nam-hee Hong ),조민정 ( Min-jung Cho ) 한국치위생학회(구 한국치위생교육학회) 2016 한국치위생학회지 Vol.16 No.1

Objectives: This study was carried out to investigate the effect of fluoride application after dental prophylaxis by the type of dental floss. Methods: Artificial caries lesion was made on the surface of cow``s permanent teeth having sound enamel surface and vickers hardness number(VHN) was measured. Specimens were classified into APF gel group and artificial saliva group. Each group was divided into waxed floss group and unwaxed flossed group. All specimens were immersed into the artificial saliva for one minute and dental flossing was applied to waxed or unwaxed floss. After washing and drying, APF gel groups were applied with fluoride for four minutes and artificial saliva groups were immersed into the artificial saliva for four minutes. After treatment, specimens were measured by VHN and surface conditions of enamel were confirmed by scanning electron microscopy(SEM). Results: VHN of waxed flossing and fluoride application group increased to 6.78±2.75. VHN of unwaxed flossing and fluoride application group increased to 7.36±2.51. There was no significant difference between waxed and unwaxed groups(p>0.05). VHN of waxed flossing and artificial saliva group increased to 1.07±2.84. VHN of waxed flossing and artificial saliva group increased to 1.05±3.13. There was no significant difference between waxed and unwaxed groups(p>0.05). There was significant increase in VHN between waxed/unwaxed flossing and fluoride application. However, waxed/unwaxed flossing with artificial saliva showed no significant VHN increase. SEM demonstrated no residue on the enamel surface in the waxed flossing groups. Conclusions: No difference was found in the remineralization of enamel by waxed flossing or unwaxed flossing.

일부지역 치과위생사의 심폐소생술관련 지식과 태도에 대한 연구

정경이 ( Kyung Yi Jeong ),하명옥 ( Myung Ok Ha ) 한국치위생학회(구 한국치위생교육학회) 2014 한국치위생학회지 Vol.14 No.5

Objectives : The purpose of this study is to investigate the knowledge and attitude toward cardiopulmonary resuscitation(CPR) in some dental hygienists. Methods : A self-reported questionnaire was filled out by 207 dental hygienists in Gwangju from February to March, 2014. The questionnaire consisted of knowledge and attitude toward CPR dental hygienists. The data were analyzed using IBM SPSS 19.0 program for chi-square test, independent t-test, one-way ANOVA and multiple regression analysis. Results : Dental hygienists having basic life support(BLS) provider accounted for 16.9%. CPR knowledge was 8.40 and attitude was 3.59 points. There were positive correlations between CPR knowledge and attitude including education, performance, and confidence(r=.231, r=.207, r=.377). In the regression analysis, attitude toward CPR confidence were positively associated with BLS provider certificate within two years. Conclusions : Dental hygienists had low level of knowledge and confidence toward CPR. It is important to educate BLS provider course to the dental hygienists.

불화물 도포 전 치면연마 시행여부에 따른 우식예방효과

조민정 ( Min Jung Cho ),하명옥 ( Myung Ok Ha ),오한나 ( Han Na Oh ) 한국치위생학회 2012 한국치위생학회지 Vol.12 No.1

Objectives : This study was carried out to investigate the caries resistant effect of fluoride by dental polishing prior to fluoride application in vitro. Methods : Artificial caries lesion was made on the surface of specimen enamel taken from cow`s permanent cuspid on the part of labial surface after resin embedding and polishing. Artificial dental plaque was formed on the 72 dental specimen with 25~45 VHN(Vickers Hardness Number) which were divided into three groups(fluoride varnish, APF gel, control) with dental polishing and without polishing respectively. Fluoride varnish and APF gel group with 20 second polishing or without polishing were immersed in the artificial saliva respectively. Control group with or without polishing were immersed in the artificial saliva. Results : 1. Significant difference was not found by fluoride varnish between polishing group and non polishing group (p>0.01). 1) polishing group. The changes of Vickers Hardness Number(VHN) were 14.49±13.73. 2) non-polishing group. The changes of VHN were 11.67±5.39. 2. Significant difference was not found by APF gel between polishing group and non polishing group (p>0.01). 1) polishing group. The changes of VHN were 8.48±8.37. 2) non-polishing group. The changes of VHN were 5.32±2.59. Conclusions : Showed no significant difference between polishing group and non-polishing group regardless of fluoride materials (fluoride varnish, APF gel).(J Korean Soc Dent Hygiene 2012;12(1):113-122)