• 제목/요약/키워드: Caries Incidence

검색결과 65건 처리시간 0.022초

Effect of Xylitol on various Oral bacteria

  • Na, Hee Sam;Kim, Sheon Min;Kim, Seyeon;Choi, Yoon Hee;Chung, Jin
    • International Journal of Oral Biology
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    • 제38권4호
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    • pp.175-180
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    • 2013
  • Xylitol is a five-carbon sugar alcohol that reduces the incidence of caries by inhibiting the growth of oral streptococci, including Streptococcus mutans. Since xylitol is transported via the fructose phosphotransferase system, we hypothesized that it could also affect the growth of other oral bacteria strains. We tested the effects of xylitol against non-periodontopathogenic oral bacteria frequently found in healthy subjects as well as periodontopathogens including Porphyromonas gingivalis, Treponema denticola, and Tannerella forsythia. With 5% xylitol, Streptococcus vestibularis and Gemella morbillorum showed marked growth inhibition. With 10% xylitol, all of the tested periodontopathogens and Actinomyces naeslundii showed marked growth inhibition, whereas the growth inhibition of Neisseria mucosa, Neisseria sicca and Veillonella parvula was mild only. Xylitol is a widely used sweetener and the concentration used in our experiment is easily achieved in the oral cavity. If xylitol reduces the growth of periodontopathogens more preferentially, it could also reduce the prevalence of these pathogens and have clinical utility in the prevention or treatment of periodontal disease.

구강악안면 근막간극감염에 관한 임상적 고찰 (A CLINICAL STUDY ON ORAL & MAXILLOFACIAL FASCIAL SPACE ABCESS)

  • 신상훈;박성환;황희성
    • Maxillofacial Plastic and Reconstructive Surgery
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    • 제20권2호
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    • pp.152-157
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    • 1998
  • Disturbances of the interrelationship among the host, environment, microorganism will cause the infection clinically. Infection can be classified into bacterial, viral, fungal origin, Bacterial infection is most common due to dental caries, periodontal disease. These infections have the potential to spread via the fascial spaces in the head and neck region. We have undertaken clinical studies on infections in the oral and maxillofacial regions by analyzing 78 hospitalized patients in the Dept. of Oral and Maxillofacial Surgery, Dong-A University Hospital from 1994 to 1997. The results were as fellows; l. Odontogenic infections were most common with the incidence of 84.6%. 2. Considering the number of involved space, single space was 83.3%, double or more space was 16.6%. The most common fascial space involved was submandibular space and followed by buccal space, 3. The most causative organism isolated from the pus cultures was streptococci group 35.4%. 4. Antibiotics were administrated in all cases, and surgical incision and drainage was performed in 87.2%. 5. Combined administration of penicillin and aminoglycoside was most common in 34.6%.. 6. 7 cases were diagnosed as Ludwig's angina and tracheostomy was done in 2 cases of them.

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Incidence of Tetracycline Resistance Genes, tet(M) and tet(O), in Streptococci Isolated from Dental Plaques of Koreans

  • Kim, Yeon-Hee;Lee, Si Young
    • International Journal of Oral Biology
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    • 제39권1호
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    • pp.9-13
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    • 2014
  • Streptococci are among the normal human microflora that populate the oral cavity. However, oral streptococci are known as a major causative agent for dental caries and bacterial endocarditis. Tetracycline is a broad-spectrum antibiotic that is used for oral infections but two mechanisms of tetracycline resistance in streptococci have been reported. The tet(K) and tet(L) genes in these bacteria are related to the active efflux of tetracycline, whereas tet(M) and tet(O) confer ribosomal protection from this antibiotic. It has been reported that the tetracycline resistance of streptococci is related mainly to the activity of tet(M) and tet(O). In our present study, we examined the prevalence of tet(M) and tet(O) in oral streptococci isolated from Korean dental plaques using PCR. One hundred and forty eight of 635 isolates (23.3%) were tetracycline resistant; 68 of these strains (46%) harbored tet(M) and 3 strains (2%) were positive for tet(O). However, tet(M) and tet(O) did not co-exist in any of the resistant strains. Seventy seven of the 148 tetracycline resistant strains (52%) were negative for both the tet(M) and tet(O) genes.

유합치와 쌍생치에 관한 방사선학적 연구 (A RADIOGRAPHIC STUDY OF FUSED AND GERMINATED TOOTH)

  • 박철제;이상래
    • 치과방사선
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    • 제20권1호
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    • pp.79-89
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    • 1990
  • The incidence and several characteristic features of fused and geminated teeth were studied radiographically, with full mouth periapical radiogram and pantomogram, in 4201 patients of mixed dentition and 5358 patients of permanent dentition. The obtained results were as follows: 1. The prevalence was revealed to 2.86%, 0.32%, 0.33%, and 0.06% in deciduous fused tooth, permanent fused tooth, deciduous geminated tooth and permanent geminated tooth respectively, and these anomalies were occured in female more than male. 2. Fused teeth were observed predominantly in lower anterior teeth area, especially in lateral incisor and canine region, and many cases of deciduous geminated tooth were observed in upper central incisor region. 3. Congenital missing rates of succedaneous tooth in deciduous fused teeth were 57.1 %, 85.7%, 71.0%, 69.0% in upper right and left central-lateral incisor regions, lower right and left lateral incisor-canine regions, respectively. 4. Prevalence of dental caries was 42.3%, 18.8% and 5.6% in deciduous fused, deciduous geminated and permanent fused tooth, respectively. 5. In classifying of fused and geminated teeth into 9 types, by following appearance such as number of crown, root, pulp chamber and pulp canal of those teeth, it was more favorable that Type Ⅰ(2 crown, 2 root, 2 pulp chamber, 2 pulp canal) in deciduous fused tooth and Type Ⅸ (I crown, 1 root, 1 pulp chamber, 1 pulp canal) in permanent fused tooth, deciduous and permanent geminated tooth.

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Lactobacillus reuteri 함유 Probiotics가 구강미생물의 생존 및 biofilm 형성에 미치는 영향 (The effects of Lactobacillus reuteri-containing probiotics on the viability and biofilm formation of oral microorganisms)

  • 이수빈;이경희
    • 한국치위생학회지
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    • 제20권3호
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    • pp.387-397
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    • 2020
  • Objectives: This study aimed to evaluate the inhibitory effects of probiotics containing Lactobacillus reuteri on Streptococcus mutans and Aggregatibacter actinomycetemcomitans. In addition, the degree of biofilm formation, initial acidity, buffering ability, and acid production performance were measured to confirm the dental caries-inducing ability. Methods: S. mutans (KCTC3065) and A. actinomycetemcomitans (KCTC2581) were used as experimental strains. The number of viable cells, degree of biofilm formation, initial pH, buffering capacity, and production performance were measured for comparing L. reuteri-containing probiotics and Bulgaris. Results: The viability of S. mutans in the groups was reduced in the following order: Bulgaris, probiotics, control. The degree of biofilm formation was significantly higher at 0% and gradually reduced at different concentrations (p<0.01). At 2.5%, the absorbance of the probiotics and Bulgaris groups differed significantly (p<0.01). The acid formation ability differed significantly based on the performance of S. mutans in each product (p<0.05). The absorbance of the probiotics group was significantly lower than that of the Bulgaris group (p<0.01). Conclusions: This study suggests that the use of L. reuteri-containing probiotics as an adjuvant for the prevention and decreasing of oral diseases may reduce their incidence, which can be considered one of the benefits of using probiotics.

Endocem MTA와 ProRoot MTA를 이용한 부분치수절단술 후 통증 발생에 관한 임상 연구 (Pain Occurrence after Partial Pulpotomy by using Endocem MTA and ProRoot MTA: a Clinical Study)

  • 곽상원;김현철
    • 대한치과의사협회지
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    • 제57권1호
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    • pp.18-25
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    • 2018
  • Objectives: This study aimed to compare the postoperative pain and clinical performance after partial pulpotomy by using ProRoot MTA and Endocem MTA. Materials and Methods: Twenty-eight teeth requiring partial pulpotomy due to deep dental caries or traumatic injury were included in this study. After 2mm removal of exposed pulp and bleeding control, the ProRoot MTA or Endocem MTA was randomly adjusted to the exposed site. 1, 2, 4, and 12 weeks after the final restoration, the patients were recalled to check the postoperative pain or another unfavorable signs. Pearson's chi-square test was used for statistical analysis to evaluate any differences among tested materials. Results: 3 of 28 teeth showed postoperative pain and cold positive during follow-up period (10.7%). There were no statistically differences in pain occurrence between two tested materials (P > 0.05). Conclusions: In the limitations of this study, partial pulpotomy by using Endocem MTA showed the advantages of short setting time and lower postoperative pain incidence, allowing one visit treatment.

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일부사립대학교(一部私立大學校)의 학생(學生)의 성장(成長).발육(發育) 및 건강상태(健康狀態)에 관(關)한 조사연구(調査硏究) (A Study on the Physical Growth and Health Status of the Freshmen in a Private University)

  • 박양원;이병갑;박순영;김형석;김재명
    • Journal of Preventive Medicine and Public Health
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    • 제5권1호
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    • pp.97-104
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    • 1972
  • For the purpose of ascertaining the status of physical growth and health status of the University Students, an intensive survey was conducted by the authors towards a total of 1,250 (Male 792, Female 458) who passed the written entrance examination at the Kyung Hee University in 1972. The items included the measurements on physical growth, various physical and nutritional indices, status of visual distourbance, dental status and tuberculosis. The findings and results cad be summarized as follows; 1. Physical Growth and Develspment. i) The average of body height by anthropometric was $169.39{\pm}5.05cm$ in male and $157.45{\pm}4.43cm$ in female. ii) The averages of body weight by sex were $59.42{\pm}6.47Kg\;and\;51.81{\pm}5.21Kg$, respectively. iii) The averages of chest-girth were $87.18{\pm}5.30cm\;and\;80.51{\pm}4.53cm$. iv) The averages of sitting-height were $92.21{\pm}2.79cm\;and\;86.28{\pm}2.57cm$. In all cases the male measurements were higher than female. 2. Various ludices about Physical Growth and Development; i) Relative body weights by sex were 35.08 and 32.91, relative chestgirth 51.47 and 51.13, and relative sitting-height 54.43, 54.79, respectively. ii) Rohrer index was 1.222 in males and 1.327 in females, Kaup index 2.071 and 2.089, Verveck index 86.54 and 84.04, and Pelidisi index 91.15 and 93.08, respectively 3. Status of visual distourbance The vision of the students under 0.8 with Landolt's testing chart was 45.4% in left eye and 46.6% in right eye(male: 44.4% and 45.7%, female: 47.2% and 48.0%), while under 0.6 in both visions was 41.0% and 40.5% (male: 40.8% and 40.7%, female: 41.5% and 40.2%), respectively. 4. Dental Status Out of total 19.4% (male 19.2%, female 19.6%) had gingivitis, the female incidence rate of gingivitis was higher than male. Average number of teeth in each subject was 29.6 teeth: male had 29.9 teeth and female had 29.1 teeth. The caries rate was 78.9%(male 75.6%, female 84.5%), the female caries rate was higher than male. Total filing per subject was 35.6% (male 34.0%, female 37.1%), female incidence was higher shan male. The average number of i) Caries per tooth rate was 8.5% in male and 9.2% in female, ii) Missing per tooth rate was 0.3% and 0.2%, iii) Filling per tooth rate was 3.9% and 4.2%. in all cases, the female incidences were higher than the male. The average number of D.M.F. was 3.8 teeth in male and 4.0 teeth in female, female was higher than male. The average rate of D.M.F. was 12.7% in male and 13.7% in female, female was higher than male. 5. Pulmonary infiltration Among the total, 53 students were diagnosed as pulmonary infiltration (tuberculosis), of whom 51 were minimal cases, one were moderately advanced case and one were far advanced case.

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Digital Imaging Fiber-Optic Trans-illumination을 이용한 초기 법랑질 우식병소의 조기 진단 (EARLY DETECTION OF INITIAL DENTAL CARIES USING A $DIFOTI^{TM}$)

  • 염혜웅;유승훈;김종수
    • 대한소아치과학회지
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    • 제31권4호
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    • pp.587-597
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    • 2004
  • 치아 우식증의 발생과 관련된 분야에 대한 연구는 지난 20년간 활발히 진행되어 괄목할만한 발전을 이루었다. 그러나 치아 우식증의 원천적인 예방을 이루기 위해서는 보다 새로운 실험 장비와 기구를 이용한 다각적인 연구가 요구되며, 이러한 흐름에 부응하여 미국의 인디아나 치과대학을 중심으로 초기 법랑질 우식증에 관한 재조명이 집중적으로 이루어지고 있다. 또한 세계적으로 치과계의 지속적인 대민 교육과 홍보 및 불소화사업 등의 우식 예방에 대한 노력과 구강 보건에 대한 대중의 인식 향상을 통해 치아 우식증이 감소하는 추세에 있으며, 이로 인해 치아 우식증이 기존의 교합면보다 인접면에서 더 많이 발견되는 추세로 변화되고 있다. 치아 우식증의 조기 진단을 목적으로 새로운 진단 장비들이 속속 개발되고 있으며 이미 성능의 우수성이 실험실 연구를 통해 입증된 바 있다. 본 연구의 목적은 초기 인접면 우식증의 진단에 있어 새로 개발된 $DIFOTI^{TM}$ 시스템의 효능을 기존의 방법인 시진 및 교익방사선사진과 비교 평가하고, 임상 적용시의 문제점을 파악하여 차후 $DIFOTI^{TM}$ 시스템 개발에 필요한 개선안을 제시함과 아울러 치아 우식증의 예방 및 불소를 이용한 초기 우식증 재광화 방법에 대한 기초 연구 자료를 마련하고자하였다. 학동기 연령에 있는 유치 탈락 시기에 근접한 것으로 기대되는 23명의 아동을 대상으로 구강 검진 2회, 구치부 교익 방사선 필름 판독 2회 그리고 전치부 및 구치부 $DIFOTI^{TM}$ 이미지 판독 2회를 실시하고 각 방법에 대한 신뢰도 평가를 시행한 결과 다음과 같은 결론을 얻었다. 1. 구강 검진시 검사자간 신뢰도는 교합면에서 평균 0.8470으로 가장 높았으며, 근심면 평균 0.6430, 원심면 평균 0.5727, 설면 평균 0.2807 그리고 협면 평균 0.2339순으로 나타났다. 구치부에 국한시킨 경우 교합면에서는 평균 0.8577이었으며, 원심면 평균 0.8211, 설면 평균 0.7728, 협면 평균 0.7152, 근심면 평균 0.6782 순으로 나타났다. 2. 구치부 교익 방사선 사진 판독 결과에 대한 검사자간 신뢰도는 교합면 평균 0.8346, 근심면 평균 0.8675, 원심면 평균 0.8482 순으로 나타났다. 3. $DIFOTI^{TM}$ 이미지 판독 결과에 대한 검사자간 신뢰도는 교합면 평균 0.8437, 협면 평균 8379, 근심면 평균 0.8223, 설면 평균 0.7766, 원심면 평균 0.6781 순으로 나타났다. 4. 치아 우식증 진단율을 비교한 결과 교합면, 협면, 설면에서는 $DIFOTI^{TM}$ 이미지 판독이 가장 우수한 것으로 나타났으며(p<0.05), 근심면과 원심면에서는 방사선 판독이 가장 우수한 것으로 나타났다(p<0.05).

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글란즈만 혈소판무력증 환자의 치과적 관리 (Dental Management in a Patient with Glanzmann's Thrombasthenia : A Case Report)

  • 한미란;김종수
    • 대한소아치과학회지
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    • 제47권3호
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    • pp.352-358
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    • 2020
  • 글란즈만 혈소판무력증(Glanzmann Thrombasthenia, GT)은 상염색체 열성 유전으로 나타나는 희귀한 선천성 질환으로 혈소판 기능에 이상이 있어 혈액 응고 장애를 보이며 대표적인 증상은 지혈이 잘 되지 않는 출혈이다. 1918년 소아과의사 글란즈만에 의해 처음보고 되었으며 글란즈만씨병(Glanzmann's disease)이라고도 불리 운다. GT는 남성과 여성에서 동등하게 나타나고, 중동, 인도 프랑스 등 근친결혼을 하는 곳에서 많이 발생하며, 대략 1,000,000명당 1명에서 발견된다. 우리나라에서는 2018년 질병관리본부 희귀질환과에 따르면 200여명의 환자가 보고되고 있다. 임상증상은 점상출혈, 반상출혈, 비 출혈, 치은 출혈 등이 관찰되고, 유치의 자발적 탈락에서도 수혈을 고려해야 할 정도의 출혈이 발생할 수 있다. 치료의 일반적인 목표는 출혈 예방과 지혈이다. 여러 가지 지혈을 위한 처치에도 출혈이 지속되면 혈소판 수혈을 해야 한다. 소아치과의사는 구강을 청결히 하여 치은염과 치아 우식증을 예방함으로써 치은 출혈을 최소화하고, 구강 위생과 규칙적인 치과 검진의 중요성을 주지시켜야 하며, 치과치료시 출혈에 대비한 치료계획의 수립 및 세심한 진료가 필요하다. GT를 동반한 만6세 여아로 치아우식증을 주소로 내원하여 아산화질소-산소를 이용한 흡입진정하에 레진수복을 시행하였으며 술 후 치료부위의 압박지혈이 필요하였다.

Russell-Silver Syndrome 환아의 치과적 관리: 증례 보고 (DENTAL MANAGEMENT OF THE RUSSELL-SILVER SYNDROME: CASE REPORT)

  • 김준혁;손흥규;김승혜;최형준;이제호
    • 대한장애인치과학회지
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    • 제6권2호
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    • pp.99-104
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    • 2010
  • 1. 러셀-실버 증후군 환아는 특징적인 소구증 및 유아기의 섭식 장애를 보이므로, 출생 후 필요시설소대 절제술을 고려해야 하며 특별히 고안된 구강위생 용품이 구강위생 증진에 도움이 될 수 있다. 2. 러셀-실버 증후군 환아의 우식 치료 시 개구량이 확보되지 않으므로 근육 이완을 위해 전신마취를 고려해야 하며, 소형의 핸드피스 및 버와 같은 기구들을 사용하여 접근하는 것이 치료를 수월케 하며 환아의 불편감을 감소시킬 수 있다.

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