• Journal of Periodontal and Implant Science
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• 제27권1호
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• pp.179-189
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• 1997

Teeth mobility is an important part of a periodontal examination, because it represents a function of the persisting height of the alveolar bone and the width of the periodontal ligament. The purpose of this study was to evaluate clinical difference in teeth mobility after treatment with the modified Widman flap and the undisplaced flap in humans. Twenty males with moderate periodontal disease were selected. The severity of periodontal disease was evaluated with sulcular bleeding index, pocket depth and attachment level and tooth mobility was measured with Periotest(Siemens Co., Germany) at the initial examination, 1, 2, 4, 6, 8 and 12 weeks following the modified Widman flap and the undisplaced flap operation using the split-mouth technique. The relation of mobility to clinical parameters was statistically analyzed by multiple regression and the change of teeth mobility according to healing process by independent t-test using SPSS program. The results were as follows: 1. There was a strong relationship between the Periotest value(PTV) and attachment level. 2. The change of teeth mobility in both flap procedures was increased significantly at 1 week post-op. and was decreased to preoperative level at 4 weeks post-op, in modified Widman flap and at 6 weeks post-op. in undisplaced flap. 3. The change of teeth mobility in premolar teeth group in undisplaced flap compared to modified Widman flap was generally increased but these changes were not statistically significant. The changes of teeth mobility in molar teeth group in undisplaced flap was increased significantly at 2 weeks post-op.. 4. The change of teeth mobility following undisplaced flap was increased significantly compared to that of modified Widman flap at 2 weeks post-op.

• Journal of Periodontal and Implant Science
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• 제43권6호
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• pp.315-322
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• 2013

Purpose: In this study, we investigated the effect of silk scaffolds on one-wall periodontal intrabony defects. We conjugated nano-hydroxyapatite (nHA) onto a silk scaffold and then seeded periodontal ligament cells (PDLCs) or dental pulp cells (DPCs) onto the scaffold. Methods: Five dogs were used in this study. Bilateral 4 mm${\times}$2 mm (depth${\times}$mesiodistal width), one-wall intrabony periodontal defects were surgically created on the distal side of the mandibular second premolar and the mesial side of the mandibular fourth premolar. In each dog, four of the defects were separately and randomly assigned to the following groups: the PDLCcultured scaffold transplantation group (PDLC group), the DPC-cultured scaffold transplantation group (DPC group), the normal saline-soaked scaffold transplantation group, and the control group. The animals were euthanized following an 8-week healing interval for clinical, scanning electron microscopy (SEM), and histologic evaluations. Results: There was no sign of inflammation or other clinical signs of postoperative complications. The examination of cellseeded constructs by SEM provided visual confirmation of the favorable characteristics of nHA-coated silk scaffolds for tissue engineering. The scaffolds exhibited a firm connective porous structure in cross section, and after PDLCs and DPCs were seeded onto the scaffolds and cultured for 3 weeks, the attachment of well-spread cells and the formation of extracellular matrix (ECM) were observed. The histologic analysis revealed that a well-maintained grafted volume was present at all experimental sites for 8 weeks. Small amounts of inflammatory cells were seen within the scaffolds. The PDLC and DPC groups did not have remarkably different histologic appearances. Conclusions: These observations indicate that nHA-coated silk scaffolds can be considered to be potentially useful biomaterials for periodontal regeneration.

• 구강회복응용과학지
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• 제37권4호
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• pp.294-300
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• 2021

치태세균에 의해 야기되는 괴사성 치주질환은 감염부위에서 위막과 치간사이의 연조직 괴사 및 출혈, 촉진시 통증과 치은 출혈이 관찰된다. 환자들의 구내 세균을 조사해보면 방추균과 나선균이 혼합하여 존재하는 방추스피로헤타 세균총을 가지고 있다. 본 증례는 괴사성 치주질환으로 잠정 진단된 환자 2명을 대상으로 비외과적 치주치료, 3% 과산화수소를 적신 면봉을 이용한 드레싱 후 국소전달항생제를 도포하였고, 치료 전과 초기 치료 3 - 5일 후 치은열구액을 채득하여 실시간 연쇄중합반응법을 이용한 정량분석으로 구강내 미생물수를 측정하였다. 비외과적 치주치료 후 감염부위 치은이 정상으로 회복되었고, 7종 이상 검출되던 치주질환 관련 미생물도 1종만 검출되었다. 결과적으로 비외과적 치주치료를 통해 괴사성 치주질환 환자들의 치주 조직을 정상으로 회복하였다.

• 치위생과학회지
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• 제11권3호
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• pp.221-228
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• 2011

2007년 국민건강영양조사 자료를 이용하여 한국 성인의 당뇨병과 치주질환과의 관련성에 대해 평가하고자 하였다. 지역사회치주지수(Community Periodontal Index: CPI)와 당뇨병 각 구성요소에 대한 검진자료가 모두 있는 만 19세 이상 성인 190명을 최종분석대상자로 하여 다음과 같은 결론을 얻을 수 있었다. 1. 치주질환 유병과 관련이 있는 당뇨병 관련 특성은 당뇨 교육과 당뇨 치료, 당화혈색소 로 나타났다. 당뇨교육과 당뇨 치료를 받지 않는 경우, 당화혈색소가 7.0이상(조절 안 되는 편)인 경우 치주질환의 비율이 높게 나타났다. 2. 치주질환 유병과 관련이 있는 일반건강행위는 흡연과 음주로 나타났다. 현재 흡연을 하 는 경우, 일주일에 음주횟수가 많을수록 치주질환의 비율이 높게 나타났다. 3. 치주질환 유병과 관련이 있는 구강건강행위는 지난 1년간 구강검진 여부, 치간 칫솔 및 치실 사용 여부, 주관적 구강건강 상태로 나타났다. 지난 1년간 구강검진을 받지 않고 치간 칫솔 및 치실을 사용하지 않는 경우, 주관적 구강건강 상태가 건강하지 않다고 생 각하는 경우 치주질환의 비율이 높게 나타났다.

• 치위생과학회지
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• 제14권2호
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• pp.123-131
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• 2014

본 연구는 제4차 국민건강영양조사 자료를 바탕으로 직장 및 가정 내 간접흡연에 노출되는 자를 연구대상으로 하였다. 대상자들을 성별, CPI 및 간접흡연 노출여부를 기준으로 비교 분석하였으며, 다음과 같은 결론을 얻었다. 첫째, 간접흡연 노출자는 남성 380명, 여성 1,519명으로 조사되었으며, 간접흡연 노출여부에 따른 코티닌 농도는 노출군에서 유의한 차이를 보였다(p<0.001). 둘째, 치은염(CPI 1, 2)과 간접흡연의 관계는 남성은 치과방문횟수(p<0.001), 여성은 연령(p<0.001) 및 치과방문횟수(p<0.001)와 관계가 있었다. 셋째, 치주염(CPI 3, 4)와 간접흡연의 관계는 남성은 연령(p<0.001), 여성은 연령(p<0.001), 간접흡연 노출여부(p<0.001)와 관계가 있었다. 넷째, 치주상태에 따른 치주상태별(CPI 1~4) 코티닌 농도 차이는, 남성은 CPI 1, CPI 4에서, 여성은 모든 CPI 군에서 노출여부에 따른 큰 차이를 보였다. 이상의 결과를 종합하면 간접흡연 노출여부가 여성의 치주상태에 영향을 미치는 것으로 나타났다. 이로써 효과적인 치주치료는 물론 국민 구강건강증진을 위해 간접흡연 위해성을 확대 고취시키고 비흡연자를 보호할 수 있는 적극적인 금연정책이 실행되어야 할 것으로 고려된다.

• 한국산학기술학회논문지
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• 제19권4호
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• pp.245-253
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• 2018

본 연구는 국민건강영양조사 제6기(2015년) 원시자료를 이용하여 20~65세의 경제적인 능력을 갖고 있는 2,088명의 근로자를 최종연구대상자로 선정하였다. 본 연구의 목적은 경제활동자의 만성질환과 구강건강행태의 연관성을 조사하고 구강질환의 위험인자를 알아보기 위해 시행하였다. 연구결과 다음과 같다. 치아우식증은 주관적인 구강건강상태, 치통경험, 교정치료경험, 씹기문제, 말하기문제, 구강검진 및 치과의료기관이용과 관련성이 나타냈다. 치주질환은 구강건강상태, 치통경험, 교정치료경험, 씹기 및 말하기문제와 관련성을 나타냈다. 만성질환과 구강건강행태가 구강질환에 미치는 위험도는 다음과 같다. 정상에 비해 고혈압은 1.37배, 비만은 1.48배, 당뇨군은 1.5배, 저HDL-콜레스테롤혈증, 1.31배, A형 간염항체는 1.53배 더 높은 것으로 나타났다. 건강상태는 좋은군에 비해 나쁜 상태가 치아우식증 1.70배, 치주질환 2.10배 높은 것으로 나타났다. 치통경험은 치아우식증 1.30배, 치주질환 1.35배 높은 것으로 나타났다. 씹기문제는 치아우식증 1.76배, 치주질환 1.78배, 스트레스는 치아우식증과 치주질환 모두 1.44배 높은 것으로 나타났다. 흡연자는 치아우식증 1.61배, 치주질환 1.63배 더 높은 것으로 나타났다. 이상의 결과로 볼 때 만성질환은 치주질환의 발생위험률을, 구강건강행태는 치아우식증과 치주질환의 발생위험률을 증가시키는 것으로 파악되었다. 치아우식증은 구강건강관리만 잘해준다면 만성질환으로 이활 될 위험도가 낮아지는 것으로 보이나, 치주질환은 만성질환과 구강건강관리 모두가 중요하다고 여겨진다.

• Journal of Periodontal and Implant Science
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• 제24권2호
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• pp.376-389
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• 1994

A study was conducted to compare the effects of chlorhexidine mouthrinse and chlorhexidine acetate powder with periodontal pack during 4 weeks following periodontal surgery. Twelve patients were treated with Modified Widman flap procedures and devided into three groups of four patients each; control group, chlorhexidine mouthrinse group, chlorhexidine acetate powder group. Each group wasn't significant difference in clinical and microbiologic parameters at preoperation. Examination regarding plaque index, gingival index, pocket depth, change of gingival color postsurgically, pain index were performed by each methods and observed bacteria in gingiva by phase contrast microscope. Evaluations were made at 7, 14 and 28 days postsurgically. The results were as follows: l. In comparison of results revealed no significant differences in Plaque Index, Gingival Index, pocket depth and change of gingival color postsurgically. 2. The pocket depth of three experimental groups were significant reduced at 4 weeks. 3. Chlorhexidine mouthrinse group and chlorhexidine acetate powder group with periodontal pack were significant differences in pain index at 3, 4 days postsurgically. 4. Cocci and Non-motile rods were increased at 1, 2 weeks. But, motile rod and spirochete were increased at 4 weeks.

• Journal of Periodontal and Implant Science
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• 제43권6호
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• pp.276-282
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• 2013

Purpose: The aim of this study was to explore root shape abnormalities, to investigate the influence of root form abnormalities on periodontal attachment loss, and to gather basic data to assist in the diagnosis and treatment of aggressive periodontitis. Methods: From January 2010 to June 2012, a survey was conducted of all 3,284 periodontitis patients who visited the Department of Periodontology, Daejeon Dental Hospital, Wonkwang University School of Dentistry. Clinical parameters (probing depth, periodontal attachment loss, missing teeth) were measured and a radiographic examination was performed at the baseline. We classified the root shape abnormality of bicuspids and molars based on Meng classification. Results: The periodontal attachment loss was the highest at the maxillary first molar (6.03 mm). The loss of the second molar was prominent. Type V deformity was shown to be the most common in the second maxillary and mandibular molars (P<0.05). Type V root shape was associated with the highest attachment loss (P=0.01). Conclusions: Considering the small population and limited design of this study, definitive conclusions cannot be drawn. We suggest larger scale, methodologically more sophisticated studies that include normal controls and chronic periodontitis patients to clarify whether root form abnormalities are a potential risk factor for aggressive periodontitis.

• Journal of Periodontal and Implant Science
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• 제26권4호
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• pp.859-872
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• 1996

The purpose of this study was to evaluate the effect of low concentrative ${\beta}-APN$ on the periodontal ligament and relationship between lathyrintic bodies and osteoclast cells near the by alveolar bone. Mandibles including teeth and periodontiums of 24 Sprague-Dawley rat was used. ${\beta}-APN$ 0.2g/kg/day soluted in mineral water was administrated for 5 days before sacrifice in experimental group. 3 rats on each day was sacrificed on 1, 3, 7, 11 days after stop administration ${\beta}-APN$. Histologic examination and the activity of osteoclasts by tartrate resistant acid phosphatase was observed. The results were as follows : 1. In experimental group, the The small foci of lathyrintic bodies surrounded by palisading fibroblasts were seen obviously on 1, 3 days and decreased after 7 days. On 11 days, fibroblasts of periodontal ligament similar to control group. 2. The lathyrintic bodies were seen in the middle zone of periodontal ligament of pressured area like furcation area, alveolar crest, bone resorption area than tensioned area of apposition area. 3. In experimental group of 1, 3 days, lathyrintic bodies were much seen in the area that osteoclasts was much distributed area. After 7 days, experimental group was seen the control group. In conclusion, rathyrintic bodies were formed by low concentrative ${\beta}-APN$ chiefly on the pressured area like furcation area, alveolar crest, bone resorption area than tensioned area of apposition side in periodontal tissue and concerned with osteoclast cells.

• Journal of Periodontal and Implant Science
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• 제41권3호
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• pp.143-148
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• 2011

Purpose: Few epidemiologic studies have investigated aggressive periodontitis in Koreans, but such studies of disease prevalence and other clinical characteristics would be invaluable in providing proper treatment. The aim of this study was to assess the prevalence of aggressive periodontitis and to measure the extent of associated periodontal breakdown. Methods: The study population consisted of 1,692 patients who visited the Department of Periodontology, Wonkwang Daejeon Dental Hospital from January to December, 2010. Clinical parameters (probing depth, gingival recession, periodontal attachment loss) were measured by a single examiner, and radiographic examination was performed at the baseline. Results: Twenty-eight (1.65%) patients showed clinical features of aggressive periodontitis, of which 27 patients exhibited the generalized form, and 1 exhibited the localized form. There was no significant difference between the percentage of male and female patients. The probing pocket depth of the maxillary first molar was deeper than that of the other teeth and gingival recession was also the most serious at the maxillary first molar. The periodontal attachment loss was the highest at the maxillary first molar. The average number of missing teeth was 1.29 per subject. Loss of the second molar was prominent. Conclusions: Within the limitations of this study, the periodontal breakdown evaluated by attachment loss was found to be most severe at the first molars of aggressive periodontitis patients. However, further large scale multicenter studies are necessary to access more precise data, including prevalence.