• 대한치위생과학회지
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• 제3권1호
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• pp.1-13
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• 2020

The purpose of this study was to investigate the perception of calculus removal, an essential factor in periodontal disease in the elderly population. Further, the study aimed to identify the oral hygiene management matters of individuals and to use the information as primary data for preventing dental loss and improving the prevention of chronic diseases. From December 20, 2019, to January 15, 2020, the results of 171 studies on oral hygiene management and awareness of calculus removal among the elderly aged 65 or older in Busan and Gyeongnam are as follows: The elderly with good health appreciated their functional oral health status and showed significant differences (Χ²=298.26, p<.001). Many of the elderly brushing their teeth at least three times a day had a better health status and showed significant differences according to their health status (= 134.42, p <.001). Usually, older people who are in good health have a dental floss (Χ²=89.31, p<.001), and the dental floss were used more often and significantly differed depending o health status (Χ²=92.53, p<.001). The elderly's perception of tartar removal has shown that the overall average out of five points is positive at 3.48. Older female adults were more positive and showed significant differences regarding gender (t=-7.95, p<.001). Senior citizens aged 65 to 70 were more positive about dental removal than those aged 71 or older, with significant differences in age (t=6.65, p<.001). As described above, oral hygiene management for the elderly population needs to develop a periodontal disease prevention program linked to systemic diseases, considering that there are many chronic diseases.

• 치위생과학회지
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• 제15권2호
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• pp.220-225
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• 2015

본 연구에서는 국내에서 권장하고 있는 회전법이 실천 용이하고 치면세균막 제거에 효과적인지 다른 칫솔질 방법과 비교해 보고, 집단칫솔질교육 후 시간흐름에 따른 효과추이를 확인하고자 임의 추출한 20대 대학생을 대상으로 O'leary 지수와 PHP 지수를 구하고 칫솔질 수행도를 조사하였다. 분석은 STATA 11.0을 이용하였다. 회전법과 바스법, 와타나베법의 칫솔질 방법에 따라 O'leary 지수와 PHP 지수 및 칫솔질 수행도가 차이가 있는지에 대해 조사하기 위해 1차부터 3차까지 평균을 비교한 결과 차이가 없었다. 칫솔질 교육 전인 1차, 칫솔질 교육 2주 후인 2차, 칫솔질 교육 4주 후인 3차의 O'leary 지수, PHP 지수 및 칫솔질 수행도의 차이를 확인하기 위해 비모수 표본자료에 사용하는 Kruskal-Wallis test를 수행한 결과 O'leary 지수의 경우 칫솔질 교육 전 측정 시 가장 낮은 점수를 기록하였고, 2차시기 측정치가 가장 높게 나타났다(p=0.0001). PHP 지수는 1차시기 가장 높게 나타났고, 2차시기 감소하였다가 3차시기 다시 증가하는 것으로 나타났다(p=0.0001). 칫솔질 수행도 역시 PHP 지수와 유사한 경향을 보였다(p=0.0001). 이상의 결과로 회전법이 모든 사람에게 획일적으로 권장할 만한 방법인지 좀 더 다각적인 고찰이 필요하고, 칫솔질 교육효과는 시간이 지나면서 감소되므로 지속적인 교육이 실행될 수 있도록 제도적 장치가 마련되어야 함을 알 수 있었다.

• Journal of Chest Surgery
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• 제41권6호
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• pp.768-771
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• 2008

관상동맥질환에서 경피적 관상동맥 중재술 시 IVUS는 혈관내강과 혈관벽의 상태 죽상경화의 위치 및 범위, 중재술 후의 혈관내강의 상태에 대한 다양한 정보를 제공한다. 근래에 스텐트 삽입 후 IVUS의 사용이 점차 증가하는 추세이지만 장기적 유용성은 아직 입증되지는 않았다. 스텐트 삽입술 후 IVUS로 확인하는 과정에서 카테터가 포획되었고 이를 제거라는 과정 중 골절이 발생한 경우를 외과적으로 치험하였기에 문헌고찰과 함께 보고하고자 한다.

• Journal of Periodontal and Implant Science
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• 제28권4호
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• pp.809-822
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• 1998

Adequate root preparation in the treatment of periodontal disease often involves mechanical instrumentation to remove plaque, calculus perhaps contaminated cementum. Although meticulous scaling and root planing may remove some cementum, the use of aggressive root planing to remove cementum does not appear warranted. So ultrasonic device and rotary instrument appear to be replacing hand instrument. But it is not clear those instruments make smooth root surface as hand instrument. The roghness of the root surface were evaluate with SEM following instrumentation with Gracey curette, Perio Clean and piezo ultrasonic device(Setlec) with various tip. 20 extracted teeth were used in vitro experiment, and 9 teeth of a patient destined for extraction for periodontal reasons were utilized in vivo experiment. It was demonstrated that hand curette created the smoothest surface, while diamond tip tended to roughen the root surface. But the hand curette, Perio Clean, and piezo ultasonic device with scaler tip tend to remove cementum completely. Piezo ultrasonic device with curette-like tip made the desirable smooth surface with partial removal of cementum.

• 대한치주과학회:학술대회논문집
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• 대한치주과학회 2006년도 제46회 종합학술대회 연제초록
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• pp.148-148
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• 2006

• 대한치과교정학회지
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• 제34권4호
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• pp.363-370
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• 2004

고정식 교정장치를 부착한 경우 장치주위의 치태 축적 가능성이 증가되고 이로 인해 치은염, 법랑질 탈회 등의 부작용이 초래 될 수 있는 바 치태 제거를 위한 효과적인 칫솔질이 필요하다. 본 연구는 교정환자에서 일반적으로 사용되고 있는 치솔에 비하여 전동치솔이 구강위생에 도움이 되는지 알아보기 위하여 시행되었다. 고정식 장치에 의한 교정치료 예정인 환자 34명을 본 연구의 대상으로 하여 고정식 교정장치 부착 전에 치태지수, 치은염지수, 치은출혈지수를 측정하였다. 장치 부착 4주 후에 각 지수를 측정한 다음, 연구대상을 치솔의 종류에 따라 전동치솔군과 수동치솔군으로 임의 구분하여 수동치솔 또는 전동치솔을 사용하도록 구강위생교육을 각각 시행하였다. 이때 전동치솔의 경우 본체는 Braun Oral-B D9511을 브러쉬 헤드는 Braun Oral-B Ortho OD 15-1을 사용하게 하였으며, 수동치솔의 경우는 Butler G.U.M 124를 사용하게 하였을. 구강위생교육 4주 및 8주 후에 각 지수를 측정한 다음 시간 경과에 따른 전동치솔군과 수동치솔군의 구강위생 상태를 비교 분석하여 다음과 같은 결과를 얻었다. 1. 고정식 교정장치 부착 4주 후 치태지수, 치은염지수, 치은출혈지수 모두 증가 양상을 나타내었다. 2. 구강위생교육 후 치태지수, 치은염지수, 치은출혈지수 모두 감소 양상을 나타내었다. 3. 치은염지수, 치은출혈지수의 경우 감소양상이 수동치솔과 전동치솔군 간의 유의한 차이를 보이지 않았다. 4. 치태지수의 경우 수동치솔에 비해 전동치솔군에서 감소효과가 유의하게 크게 나타났다. 이상의 연구 결과는 고정식 교정장치로 치료받는 환자에서 전동치솔이 구강위생에 도움이 됨을 시사하였다.

• 한국치위생학회지
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• 제10권1호
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• pp.215-229
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• 2010

Objectives : This study was to assess the children's mean number of decayed or filled primary teeth in relation to their mother's oral health behavior and then to increase children's oral health. Methods : The 346 children and their mothers were selected for this study. The children were 4 or 7 years old in the 4 dental clinics in Busan and Kyungnam, Korea. Data were collected by examination on children and self-administrated questionnaire on their mothers. The questionnaire was surveyed mother's oral health behaviour and children experienced dental caries or not and the number of decayed or filled they had were used as outcome variables. Results : 1. The mother's education level affected children's dft index significantly(p<0.05), In the case of tooth brushing method of children, the group with circle teeth wipes shows the low dft index(p<0.01). 2. On the other hand the group with snack as food eaten between meals has high dft index(p<0.001). 3. The group with mother's visiting to dentist within recent 1 year, experience in removing plaque or willing to attend the oral health education show low dft index(p<0.05). The important variables affecting to dft index are experience with oral health education, tooth brushing guidance, replacement of toothbrushes, the kind of food eaten between meals, recent experience of plaque removal and willing to participating in the oral health class. Conclusions : This study showed that the mother's oral health behavior and concern play an important role for the prevention of preschooler's dental caries. Dental health education would be focused on the mothers, expecially for the practice of preventive behavior by preschools themselves.

• Journal of Periodontal and Implant Science
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• 제33권3호
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• pp.407-414
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• 2003

The aim of this study was to investigate the effect of third molar extraction on the periodontal status of the adjacent second molar. A total of 61 second molars in 31 adult periodontitis patients were examined. Among them, 27 second molars without adjacent third molars were included in the test group, and 34 second molars with third molar were included in the control group. Clinical parameters including plaque index, gingival index, and pocket depth and radiographic bone loss were measured around the second molar both in test and control group. The result showed that: (1) the mean plaque index and gingival index of control group were higher than these of the test group but the difference was not statistically significant, (2) the mean pocket depth of the control group was higher than the test group significantly at distal and buccal surface, (3) radiographic hone loss was greater in control group than test group significantly, (4) in Pearson correlation analysis between the age of extraction and radiographic bone loss in the test group, a positive relationship was shown(p<0.01). Within limitation of this study, it may be concluded that third molar extraction in periodontitis patients showed an improvement in periodontal status in contrast the patients group having third molar, therefore earlier a removal of third molar may minimize radiographic hone loss of the adjacent second molar.

• Journal of Periodontal and Implant Science
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• 제29권3호
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• pp.539-553
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• 1999

The purpose of this 6-months study was to compare the clinical and radiographic outcomes following guided tissue regeneration treating human mandibular Class II furcation defects with a bioabsorbable BioMesh barrier(test treatment) or a nonabsorbable ePTFE barrier(control treatment). Fourteen defects in 14 patients(mean age 44 years) were treated with BioMesh barriers and ten defects in 10 patients(mean age 48 years) with ePTFE barriers. After initial therapy, a GTR procedure was done. Following flap elevation, root planing, and removal of granulation tissue, each device was adjusted to cover the furcation defect. The flaps were repositioned and sutured to complete coverage of the barriers. A second surgical procedure was performed at control sites after 4 to 6 weeks to remove the nonresorbable barrier. Radiographic and clinical examinations(plaque index, gingival index, tooth mobility, gingival margin position, pocket depth, clinical attachment level) were carried out under standardized conditions immediately before and 6 months after surgery. Furthermore, digital subtraction radiography was carried out. All areas healed uneventfully. Surgical treatment resulted in clinically and statistically equivalent changes when comparisons were made between test and control treatments. Changes in plaque index were 0.7 for test and 0.4 for control treatments; changes in gingival index were 0.9 and 0.5. In both group gingival margin position and pocket depth reduction was 1.0mm and 3.0mm; clinical attachment level gain was 1.9mm. There were no changes in tooth mobility and the bone in radiographic evaluation. No significant(p${\leq }$0.05) difference between the two membranes could be detected with regard to plaque index, gingival index, gingival margin position, pocket depth, and clinical attachment level. In conclusion, a bioabsorbable BioMesh membrane is effective in human mandibular Class II furcation defects and a longer period study is needed to fully evaluate the outcomes.

• Journal of Periodontal and Implant Science
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• 제32권3호
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• pp.665-683
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• 2002

A novel glucanhydrolase from a mutant of Lipomyces starkeyi KSM 22 has additional amylase activity besides mutanolytic activity and has been suggested as promising anti-plaque agent. It has been shown effective in hydrolysis of mutan, reduction of mutan formation by Streptococcus mutans and removal pre-formed sucrose-dependent adherent microbial film and has been strongly bound to hydroxyapatitie. These in vitro properties of Lipomyces starkeyi KSM 22 glucanhydrolase are desirable for its application as a dental plaque control agent. In human experimental gingivitis　model and 6 month clinical trial, mouthrinsing with Lipomyces　starkeyi KSM 22 dextranase was comparable to 0.12% chlorhexidine mouthwash in inhibition of plaque accumulation and gingival inflammation and local side effect was negligible. This study was aimed to evaluate the cytotoxic effect of Lipomyces starkeyi KSM 22 glucanhydrolase on human gingival fibroblasts. Primary culture of human gingival fibroblasts at the 4th to 6th passages were used. Glucanhydrolase solution was made from lyophilized glucanhydrolase powder from a mutant of Lipomyces stakeyi KSM 22 solved in PBS and added to DMEM medium to the final concentration of 0.5, 1, and 2 unit. Cells were exposed to glucanhydrolase solution or 0.1 % chlorhexidine and the cells cultured in DMEM with 10% FBS and 1% antibiotics as control. After exposure, the morphological change, cell attachment, and cell activity by MTT assay were evaluated in 0.5, 1.5, 3, 6, 24 hours after treatment. The cell proliferation and cell activity was also evaluated at 2 and 7 days after 1 minute exposure, twice a day. The cell morphology was similar between the Lipomyces smkeyi KSM 22 glucanhydrolase groups and control group during the incubation periods, while most fibroblasts remained as round cell regardless of incubation time in the chlorhexidine group. The numbers of the attached cells in the glucanhydrolase groups were comparable to that of control and significantly higher than the chlorhexidine group. The numbers of the proliferated cells in the glucanhydrolase groups at 7 days of incubation were comparable to the control group and higher than the chlorhexidine group. The cell activity in glucanhydrolase groups paralleled with the increased cell number by attachment and proliferation. According to these results, Lipomyces starkeyj KSM 22 glucanhydrolase has little harmful effect on attachment and proliferation of human gingival fibroblasts, in contrast to 0.1% chlorhexidine which was cytotoxic to human gingival fibroblasts. Therefore this glucanhydrolase preparation is considered as a safe and promising agent for new mouthwash formula in the near future.