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어린이의 식이습관과 치아우식발생과의 상관관계에 관한 연구
김재곤,전철완,이두철,백병주 대한소아치과학회 2001 大韓小兒齒科學會誌 Vol.28 No.2
본 연구는 치아우식 발생과 식이습관과의 상관관계를 알아보기 위하여 전주시내 소재 유치원에 다니는 남아 143명과 여아 124명을 대상으로 유치의 우식경험지수를 조사하고, 어머니로부터 설문조사를 통하여 어머니의 직업유무, 수유경험 및 어린이의 식품기호도 등을 조사한 후 이상의 자료를 분석하였으며, 본 연구에서 나타난 결과들을 중심으로 다음과 같은 결론을 얻었다. 전체 어린이의 유치 우식경험지수는 2.92±1.05이였으며 여아(3.40±1.46)가 남아(2.51±0.97) 보다 다소 높은 우식경험지수를 나타냈으나, 남녀간의 유의한 차이는 나타나지 않았으며(P>0.05), 연령에 따른 유치의 우식경험지수를 비교한 결과, 나이가 증가할수록 높아지는 양상을 보였으며, 3세와 4세에 비해 5세와 6세에서 각각 높은 우식경험지수를 나타냈다(P<0.05). 각 식품군에 대한 기호도에서 남아는 과실류를, 여아는 해조류를 가장 좋아하였으며, 해조류를 제외한 다른 식품군에서 남녀별 유의한 차이를 나타내지 않았으며(P>0.07), 조사 식품군에 대한 어린이의 기호도와 관련한 유치 우식경험지수를 비교한 결과. 당류(r=0.3854, P<005), 유류(r=0.4328, P<0.05), 음료(r=0.2586, P<0.05)에서는 유의성이 인정되었으나, 다른 식품군에서는 유의한 상관성이 인정되지 않았다(P>0.05). The aim of the present study was to analyze relationship between dietary habits and dental caries experience inpreschool children. All 143 boys and 124 girls living in a chonju city were investigated dmf index by dentists through oral examination and dietary habit by children's mothers through questionaires such as infant diets and food preferences. The statistical analysis were performed to evaluate whether variations in dietary habits are related to dental caries experience. The obtained results were as follows; 1. The average dmf index scores of all children were examined 2.92±1.05. The girls had higher than the boys, but no significant differences between the genders were seen the을 index(P>0.05). 2. The higher were their age of children, the higher dmf index was investigated. The dmf index of 5 and 6-yr old childrens was higher than that in 3 and 4-yr old children(P<0.05). 3. No sigificant difference was found between the present of mother's occupation (P>0.05) and type of infant dietary habits(P>0.05). 4. The fruits and sea weeds were showed high degree of preference and fats and vegetables were showed low degree generally. Among 13 food groups, there was no significant difference between boys and girls except for sea weeds(P>0.05). 5. Among 13 food groups, the을 index was positively associated with sugars(r=0.3854, P<0.05), dairy products(r=0.4328, P<0.05) and soft drinks(r=0.2586, P<0.05), and negatively associated with other food groups.
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Isolation, characterization, and genomic analysis of the novel T4-like bacteriophage ΦCJ20
김재곤,채종표,김경휘,김재원,이나경,문준옥,윤성식 한국식품과학회 2021 Food Science and Biotechnology Vol.30 No.5
Pathogenic Escherichia coli infections havebeen consistently reported annually. The basic characteristicsand genome of the newly isolated UCJ20 from swinefeces was analyzed. To determine basic characteristics,dotting assays and double-layer agar assays were conducted. Bacteriophage particles were analyzed via transmissionelectron microscopy. Sodium dodecyl sulfate–polyacrylamide gel electrophoresis was performed todetermine the sizes of major structural proteins. Thecomplete genome of the phage was analyzed. Bacteriophageparticles were identified as Myoviridae, with a headmeasuring 110.57 ± 1.89 nm and a contractile tail measuring107.97 ± 3.20 nm and were found to infect E. coli. Major structural proteins of UCJ20 showed two well-pronouncedbands of approximately 53.6 and 70.9 kDa. Thegenome size of UCJ20 was 169,884 bp, and 118 of 307open reading frames were annotated. This study provides abaseline for the development of E. coli infection treatmentstrategies.
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김재곤,윤용원,김민선,이명현,김근아,배기호,윤성식 한국식품과학회 2022 Food Science and Biotechnology Vol.31 No.3
Among the key metabolites produced by probi- otic lactic acid bacteria (LAB), the use of gamma- aminobutyric acid (GABA), which alleviates hypertension, depression, and sleepiness in humans, is gaining popular- ity. Thus, GABA-producing LAB are sought after. GABA- producing LAB were preliminarily screened in acidified- MRS broth and quantified via GABase assays. The one- factor-at-a-time strategy was applied to determine the optimal conditions for GABA production. GABA produc- tion in reconstituted skim milk medium (RSM) and antibiotic susceptibility testing were performed to evaluate the potential of the strain as a yogurt starter. L. plantarum Y7 produced 4,856.86 ± 82.47 lg/mL of GABA at opti- mal culture conditions. Co-cultivation of Y7 andcommercial Lactobacillus bulgaricus affected the amount of GABA production (6.85 ± 0.20 lg/mL) in RSM. Y7 was susceptible to ampicillin, erythromycin, and tetracy- cline. Therefore, L. plantarum Y7 represents a promising strain for GABA production in the food industry.
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김재곤,정진우,백병주,양연미,이용희 大韓小兒齒科學會 2004 大韓小兒齒科學會誌 Vol.31 No.3
매복치아란 어떤 원인에 의해 적절한 맹출 시기를 넘어서까지 맹출 되지 않고 구강점막하나 악골 내에 묻혀 있는 치아를 말하여, 매복치의 일반적인 발생 빈도는 상, 하악 제 3대구치, 상악 견치, 상, 하악 소구치, 그리고 상악 중절치의 순서로 나타난다. 매복 원인으로는 (1) 폐쇄적인 원인 (과잉치, 치아종, 치배의 이소위치) (2) 외상성 원인 (연조직 치유에 의한 폐쇄, 만곡치, 정지된 치근 발육, 급성 외상성 함입)을 생각할 수 있다. 외과적인 노출 후에 교정 장치를 이용한 치아맹출 방법에 있어 첫째로 치열궁내에서 치아를 위해 적절한 공간이 마련되어야 하며, 외과적 노출에 있어 작은 어태치먼트를 수용하는데 충분한 법랑질 표면을 제공, 오염될 우려 없이 접착 술식이 가능할 수 있도록 지혈에 충분할 만큼 공간을 제공하여야 한다. 어태치먼트를 치아에 부탁, 정출력을 유지하기 위해 결찰 선재와 고무줄(elastic)을 이용하여 외부 장치와 연결한다. 본 증례들은 상악 중절치의 맹출 지연을 주소로 본원에 내원한 환아들로 방사선사진상 상악 중절치의 변위 매복을 발견하였으며, 외과적 노출과 교정력을 통하여 본래 위치로 유도하여 양호한 결과를 얻어 맹출 유도의 방법 제시에 도움이 되고자 보고하는 바이다. Impaction is generally defined as the lack of eruption of a tooth after the normal age for the eruption. An impacted tooth may appear blocked by another tooth, bone, or soft tissues, but cause of tooth impaction is often unknown. The clinician should consider the various treatment options available :(a) No treatment and observation, (b) surgical exposure and orthodontic traction (c) auto transplantation (d) extraction. These cases were about the patients with delayed eruption of maxillary central incisor. We surgically exposed impacted tooth and guided it into normal position by the orthodontic traction. Especially, in case 1. #21 was ectopic impacted state with root dilaceration. It is required to examine further root development and alignment of dentition serially.
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