• Anatomy and Cell Biology
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• 제56권3호
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• pp.374-381
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• 2023

Although the epiglottis plays a vital role in deglutition, histological studies of the epiglottis and surrounding ligaments associated with swallowing dysfunction are limited. Therefore, we performed histological observations to clarify age-related changes in the morphological characteristics of the epiglottis and surrounding structures. Tissue samples comprising the epiglottis and surrounding structures were collected from corpses that were both orally fed and tubefed during their lifetimes. Following hematoxylin and eosin, Elastica Van Gieson, and immunohistochemical staining procedures, the chondrocytes, connective tissue, and glandular tissue were observed under the epiglottis epithelium, and intervening adipose tissue was observed in the surrounding area. Fatty degeneration of acinar cells was also observed in the glandular tissue, possibly because of aging. Bundles of elastic fibers were present around the vascular wall in the peri-epiglottic ligament, but some were reduced. Furthermore, large amounts of collagen fibers ran toward and through the cartilage, whereas the mesh-like elastic fibers stopped in front of the cartilage. Microfibrils considered to be oxytalan fibers, which are thinner and shorter than elastic fibers, were observed around the vascular wall and in the fiber bundles. Age-related changes included connective tissue fibrosis shown by the large amount of collagen fibers, atrophy of salivary glands, and an accompanying increase in adipose tissue. Regarding stretchability and elasticity, the elastic fibers may have an auxiliary function for laryngeal elevation during deglutition. This suggests that disuse atrophy of the laryngeal organs with or without oral intake might reduce the amount of elastic fiber in older adults.

• 치위생과학회지
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• 제11권4호
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• pp.319-324
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• 2011

보육시설의 보육교사를 대상으로 세치제 사용과 칫솔질 지도 시 간과하고 있는 문제점을 파악하여 보육교사를 위한 구강보건 교육 프로그램 개발 시 기초자료를 제공하고자 보육교사의 칫솔질지도에 관한 실태를 조사한 결과는 다음과 같다. 1. 보육교사들의 구강보건교육 수혜 여부를 조사한 결과 59.6%가 받은 적이 없는 것으로 나타났으며, 구강보건교육을 받은 대상자의 15.4%가 보육교사 연수를 통해 교육을 받은 것으로 조사되었다. 2. 보육교사의 55.1%가 적정 치약 사용량에 대해 교육받지 못한 것으로 나타났으며, 68.8%가 적정 치약사용량이 칫솔모 길이의 반 만큼이라고 응답하였다. 3. 칫솔질 지도 행태로 어린이 혼자서 칫솔질 하게 한다가 31.4%로 나타났다. 4. 칫솔질 권장 시기 교육에서 91.7%가 식사 후에만 칫솔질을 하도록 권유하는 것으로 조사되었다. 5. 보육교사들의 구강보건교육 수혜여부와 칫솔질 권장시기 교육, 칫솔질 지도 행태, 치약삼킴 예방지도 그리고 적정 치약사용량과 같은 칫솔질 지도내용과 인식과의 상관성은 통계적으로 유의하지 않았지만(p>0.05), 구강보건교육 수혜여부와 구강건강에 대한 태도와의 상관성은 통계적으로 유의한 것으로 조사되었다(p=0.01). 이상의 결과로 보육시설의 보육교사들이 올바른 칫솔질지도를 못하는 것으로 생각된다. 따라서 보육교사를 위한 구강보건교육 전문가의 체계적이고, 정확한 구강보건교육이 필요하며, 보건교육사의 구강보건교육 수혜가 개인의 구강건강에 대한 태도변화에만 그치는 것이 아니라 유아를 대상으로 칫솔질 지도 시에도 반영될 수 있도록 지속적이며, 반복적인 구강보건교육이 보육교사를 대상으로 이루어질 수 있는 경로가 필요할 것으로 사료된다.

• 대한감각통합치료학회지
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• 제16권1호
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• pp.1-13
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• 2018

목적 : 본 연구는 구강활동을 병행한 감각통합중재가 구강방어 아동의 먹기에 어떠한 효과가 있는지 알아보고자 하였다. 연구방법 : 발달장애로 진단받은 만 6세의 남자 아동을 대상으로 2017년 4월 21일부터 6월 2일까지 총 6주간 구강활동을 병행한 감각통합 중재를 실시하고 평가하였다. 실험설계는 개별실험연구(single-subject design) 중 AB설계를 사용하였고, 기초선 A(감각통합치료) 5회기와 중재기간 B(구강 활동을 병행한 감각통합치료) 10회기로 총 15회기를 적용하였다. 실험기간 동안 아동의 먹기 수행의 변화를 측정하기 위해 목표성취척도(Goal Attainment Scale; GAS)를 사용하였다. 결과 : 구강 활동을 병행한 감각통합중재 후 좋아하는 음식을 자발적으로 먹기(GAS 평균값 1.9점)와 싫어하는 음식을 자발적으로 먹기(GAS 평균값 1.7점)가 향상되었다. 결론 : 구강활동을 병행한 감각통합중재가 구강방어로 음식섭취에 제한이 있는 아동의 먹기 수행에 긍정적인 효과가 있었다.

• 대한두개안면성형외과학회지
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• 제25권1호
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• pp.11-16
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• 2024

Background: The pathogenesis of orofacial cleft (OFC) is multifactorial, involving both genetic and non-genetic factors, the latter of which play a key role in the development of these anomalies. This paper addresses the incidence of OFC in Indonesia, with a focus on identifying and examining the distribution of contributory factors, including parental medical history, pregnancy history, and environmental influences. Methods: The study was conducted through the collection of primary data. An interdisciplinary research team from Indonesia administered a standardized questionnaire to parents who had children with OFC and who had provided informed consent. The case group comprised 133 children born with cleft lip and/or palate, and the control was 133 noncleft children born full-term. The risk factors associated with OFC anomalies were analyzed using the chi-square test and logistic regression. All statistical analyses were performed using SPSS version 25. A p-value of 0.05 or less was considered to indicate statistical significance. Results: The study comprised 138 children, of whom 82 were boys (59.4%) and 56 were girls (40.6%). Among them, 45 patients (32.6%) presented with both cleft lip and cleft palate, 25 individuals (18.1%) had a cleft palate only, and 28 patients (20.3%) had a cleft lip only. OFC was found to be significantly associated with a maternal family history of congenital birth defects (p<0.05), complications during the first trimester (p<0.05), consumption of local fish (p<0.05), caffeine intake (p<0.05), prolonged medication use (p<0.05), immunization history (p<0.05), passive smoking (p<0.05), and X-ray exposure during pregnancy (p<0.05). Conclusion: The findings indicate close relationships between the incidence of OFC and maternal medical history, prenatal factors, and environmental influences.

• 치위생과학회지
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• 제14권4호
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• pp.468-476
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• 2014

본 연구는 국민건강영양조사 제4기 자료를 이용하여 한국 성인에서 비타민 섭취와 치주염과의 관련성을 구명하고자 하였다. 국민건강영양조사 원시자료에서 건강조사와 구강검진 및 식이조사에 모두 참여한 19세 이상 성인 6,245명의 자료를 추출한 후 복합표본설계를 반영하기 위하여 가중치를 고려한 통계분석을 실시하였다. 대상자의 인구사회학적 특성, 전신건강상태와 행태, 구강건강상태와 행태 및 비타민 섭취 5분위에 따른 치주염 유병률의 차이를 ${\chi}^2$-검정을 이용하여 분석하였으며, 로지스틱 회귀분석을 이용하여 인구사회학적 특성, 전신건강상태와 행태 및 구강건강상태와 행태를 보정한 비타민 섭취와 치주염과의 관련성을 분석하였다. 치주염 유병률은 성별, 나이, 결혼상태, 교육, 수입에 따라 통계적으로 유의한 차이가 있었으며(p<0.05), 주관적 건강상태, 심혈관질환 여부, 당뇨 여부, 음주행태, 흡연상태, 및 BMI에 따른 차이도 통계적으로 유의하였고(p<0.05), 칫솔질 횟수, 주관적 구강건강상태, 구강위생용품 사용여부에 따른 차이도 통계적으로 유의하였다(p<0.05). 한편 고려된 비타민 중 비타민 A와 레티놀 및 비타민 B2 섭취가 적을수록 치주염 유병위험이 통계적으로 유의하게 높았고, 인구사회학적 특성과 전신건강상태와 행태 및 구강건강상태와 행태를 보정한 후에는 비타민 B2에서만 통계적으로 유의한 관련성이 있었다(OR: Q1=1.00, Q2=0.72, Q3=0.73, Q4=0.76, Q5=0.84). 따라서 적절한 비타민 B2의 섭취는 치주염 유병위험을 감소시킴으로써 한국 성인 인구의 지속적인 치주건강을 유지하는 데 도움이 될 수 있을 것으로 생각된다.

• 치위생과학회지
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• 제10권5호
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• pp.379-385
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• 2010

본 연구는 유아교육기관 교사의 구강건강지식 및 구강건강실천정도를 파악하고자 유아교육기관에서 근무하고 있는 교사 169명을 대상으로 설문조사 하였으며, SPSSWIN 14.0을 이용하여 분석한 결과 다음과 같은 결론을 얻었다. 1. 구강건강지식정도에 있어서 치아우식증 관련지식 평균 7.97(9), 잇솔질 2.66(3), 치주조직병 2.86(5), 불소 2.42(5), 식이 1.04(2)로 나타났으며, 전체 24문항을 기준으로 평균 16.98로 100점으로 환산시 70점 정도의 구강건강지식 수준을 보였다. 2. 구강건강실천정도는 혀닦기를 하는 경우가 4.22로 가장 높은 반면, 정기구강검진에 있어서는 2.60으로 낮게 나타났다. 전체 구강건강실천정도는 3.11정도의 수준을 보였다. 3. 일반적 특성에 따른 구강건강지식과의 차이는 전체적인 지식에 있어 30대 연령 17.47, 5년 이상-10년 미만의 교육경력 17.50, 대졸이상 17.27, 원장인 경우가 18.26, 교육경험이 있는 경우가 17.01로 높게 나타났으나 통계적으로 유의한 차이는 없었다. 4. 일반적 특성에 따른 구강건강실천정도와의 차이는 연령에 있어서 당분섭취제한, 정기구강검진, 구강위생보조용품사용, 혀닦기, 전체적인 구강건강실천정도에 있어 나이가 많을수록 실천정도가 높은 것으로 나타났고, 통계적으로도 유의한 차이를 보였다. 5. 구강보건지식정도와 구강건강실천정도와의 관계는 전체적으로 통계적으로 유의한 차이는 없었지만 각 영역별로 구강보건지식이 높을수록 실천정도가 높음을 확인할 수 있었다. 이상의 결과로 교사들을 대상으로 한 다양한 구강보건교육 프로그램이 개발되어 지속적인 구강보건교육을 통한 지식의 향상은 물론 구강보건실천 향상도 매우 중요하다고 사료된다.

• Journal of Periodontal and Implant Science
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• 제45권6호
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• pp.205-209
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• 2015

Purpose: Dental implants present several advantages over other tooth replacement options. However, there has been little research on masticatory function in relation to implant treatment. Therefore, the aim of the present study was to evaluate the improvement of masticatory function two weeks after implant restoration. Methods: Masticatory ability was evaluated with the subjective food intake ability (FIA) and objective mixing ability index (MAI) methods. Fifty-four subjects with first and second missing molars completed the study. The subjects were asked to complete a self-reported questionnaire about 30 different food items, and to chew wax samples 10 times both before and two weeks after implant restoration. A total of 108 waxes were analyzed with an image analysis program. Results: Dental implant restoration for lost molar teeth on one side increased the FIA score by 9.0% (P<0.0001). The MAI score also increased, by 14.3% after implant restoration (P<0.0001). Comparison between the good and poor mastication groups, which were subdivided based on the median MAI score before implant restoration, showed that the FIA score of the poor group was enhanced 1.1-fold while its MAI score was enhanced 2.0-fold two weeks after an implant surgery. Conclusions: Using the FIA and MAI assessment methods, this study showed that masticatory function was improved two weeks after implant restoration. In particular, the enhancement of masticatory function by implant restoration was greater in patients with relatively poor initial mastication than in those with good initial mastication.

• The Journal of Advanced Prosthodontics
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• 제9권6호
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• pp.453-462
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• 2017

PURPOSE. The purpose of this study was to investigate the in vitro cytotoxicity of thermoplastic denture base resins and to identify the possible adverse effects of these resins on oral keratinocytes in response to hot water/ food intake. MATERIALS AND METHODS. Six dental thermoplastic resin materials were evaluated: three polyamide materials (Smile tone, ST; Valplast, VP; and Luciton FRS, LF), two acrylic materials (Acrytone, AT; and Acryshot, AS), and one polypropylene resin material (Unigum, UG). One heat-polymerized acrylic resin (Vertex RS, RS) was chosen for comparison. After obtaining extracts from specimens of the denture resin materials (${\phi}=10$ mm and d=2 mm) under different extraction conditions ($37^{\circ}C$ for 24 hours, $70^{\circ}C$ for 24 hours, and $121^{\circ}C$ for 1 hour), the extracts (50%) or serial dilutions (25%, 12.5%, and 6.25%) in distilled water were co-cultured for 24 hours with immortalized human oral keratinocytes (IHOKs) or mouse fibroblasts (L929s) for the cytotoxicity assay described in ISO 10993. RESULTS. Greater than 70% viability was detected under all test conditions. Significantly lower IHOK and L929 viability was detected in the 50% extract from the VP ($70^{\circ}C$) and AT ($121^{\circ}C$) samples (P<.05), but only L929 showed reduced viability in the 50% and 25% extract from LF ($37^{\circ}C$) (P<.05). CONCLUSION. Extracts obtained from six materials under different extraction conditions ($37^{\circ}C$, $70^{\circ}C$, and $121^{\circ}C$) did not exhibit severe cytotoxicity (less than 70% viability), although their potential risk to oral mucosa at high temperatures should not be ignored.

• 대한치과기공학회지
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• 제38권1호
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• pp.51-61
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• 2016

Purpose: This study was conducted to find oral health and eating attributes relating to the maxillary anterior teeth color and examine the meaning. Methods: This study aims to prepare the basic data of the teeth color by measuring analyze mode using the color of the maxillary anterior teeth(maxillary central incisor, lateral incisor, canine) of the dental patients as the dental colorimeter. Also, This researcher explained the purpose of this study to dental patients and got agreement of 111 patients(50 men and 61 women). We conducted the survey from 2 March to 25 May, 2015. So the color of total 333 teeth was examined, and eating habit attributes and oral health behaviors were researched. Results: Lightness(L) was significantly high in female compared to male(12, p<0.05), the more often intake of red pepper paste decreased(11, 13) lightness. and the brightness of the 31-40 age group was significantly higher(12, p<0.05) than the group under the age of 20. Red chroma(a) was significantly low in over 50 age group compared to the group under the age of 20(12, p<0.05), and the red chroma(a) of the "received periodic scaling" group was significantly lower(13, p<0.01) than the other group.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제29권3호
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• pp.157-162
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• 2003

Background : The surgical removal of impacted mandibular third molar can result in considerable pain, swelling, and dysfunction that patient are incapable of work for several days. Factors contributing to post operative swelling, trismus and pain are complex. There is no question but that the procedure of surgically removing an impacted mandibular third molar is inherently a traumatic one and that some sequelae related to the inflammation response are expected. Meticulous surgical technique will minimize the sequelae of inflammation but will not prevent them. In an effort to minimize these sequelae the use of steroid was instituted. Patients and Methods : Present study was to investigate the effect of one preoperative steroid injection in the masseter muscle to the patients(male 9, female 11) who needed prophylactic removal of bilateral, symmetrical, impacted wisdom teeth in the mandible on the complaint like swelling, trismus and pain. through Double-Blind test. Results : 1. After 24 hours investigation, preoperative steroid injection had significantly reduced swelling with 39% and trismus with 57.5%. 2. $7^{th}$ post operative day investigation, reduced swelling and trismus had shown, however, not significant. 3. There wasn't major difference from the group who took preve-ntive steroid in the visual analogue scale, the first analgesic intake time and the pain period. 4. There wasn't any adverse reaction of steroid for 20 patient From the above result, If the patients are not contraindication to steroid and pronounced post operative reaction can be expected the use of steroid to the surgical removal of impacted mandibular third molar is recommended.