• 치위생과학회지
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• 제10권6호
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• pp.473-479
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• 2010

본 연구는 경기도에 소재하고 있는 D 대학의 학생을 대상으로 치과의료서비스 이용시 의료진의 친절정도를 알아보기 위해 2008년 10월 2일부터 2009년 3월 6일까지 502명을 대상으로 연구 목적을 설명한 후 설문조사를 실시, 그 결과를 분석하여 다음과 같은 결과를 얻었다. 1. 성별은 여자가 71.3%로 많았으며, 연령은 20세 이하가 67.7%로 가장 많았고, 치과방문 경험자는 89.2%이었다. 치과방문 경험자 중 구강건강에 매우관심이 있다는 31.1%이었으며, 본인이 지각하는 현재 구강건강상태에서는 이상이 있다가 35.1%로 높게 조사되었다. 2. 일반적 특성과 구강건강관심도와의 관련성은 남자 79.9%, 여자 83.2% 모두에서 구강건강에 대한 관심이 매우 높았으며, 연령에서는 26세 이상에서 92.0%로 가장 높았다. 3. 일반적 특성에 따른 현재 구강건강상태와의 관련성은 이상이 있다, 치아우식증이 있다, 치주병이 있다를 건강하지 못한 것으로 간주하면 남자 66.0%, 여자 70.9%가 건강하지 못한 것으로 조사되었으며, 26세 이상에서 72.0%로 가장 높게 조사되었다. 4. 치과병의원 방문경험자 이용실태에서는 경험이 없는 이유는 아픈 곳이 없어서가 34.6%로 높았으며, 방문이유는 아픈 치아를 치료받기 위해서가 63.0%로 가장 높았다. 치과의사와 치과위생사의 친절인식정도에서 매우 만족하는 경우는 각각 40.6% 와 45.8%이었으며, 만족이유는 환자 맞이시 편안하다가 34.4%로 높았으며, 불만족 이유는 치료에 대한 설명 부족이 30.7%로 높았다. 5. 치과의료진의 친절인식정도는 치과의사에게 만족한다 남자 60.9%, 여자 56.1%이었으며, 치과위생사에게 만족한다는 남자 66.9%, 여자 59.6%이었다. 연령에서는 26세 이상에서 치과의사에게 62.5%, 치과위생사에게 78.3%가 만족하는 것으로 높게 나타났다. 6. 구강건강관심도와 현재 본인이 지각하는 구강건강상태에 따른 친절인식정도에서는 구강건강에 관심이 많은 경우 치과의사 68.0%, 치과위생사 67.8%로 높았으며, 구강건강관심도가 낮은 경우에도 친절인식정도가 치과의사 50.0%, 치과위생사 66.7%로 높았으며, 구강건강상태가 건강하다고 지각하는 경우 친절인식정도가 높았으며 통계적으로도 각각 유의하였다(p<.022),(p<.023).

• 치위생과학회지
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• 제15권5호
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• pp.642-649
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• 2015

이 연구는 대구 지역 일부 청소년을 대상으로 구강건강상태와 구강건강 관련 삶의 질에 대해 조사하였으며, 청소년의 구강건강 관련 삶의 질에 미치는 요인에 대해 분석하였다. 연구 대상자 중 주관적 구강건강 상태에 대해서 나쁘다고 생각하는 청소년은 24명(20.2%), 보통은 67명(56.3%), 좋다고 생각하는 청소년은 28명(23.5%)이었고, 1년 내 구강 내 통증을 느낀 적이 있다고 응답한 청소년은 72명(60.5%), '없다'는 47명(39.5%)이었다. 구강건강 관련 삶의 질의 점수는 최하 14~70점까지로 연구 대상자의 평균 총 점수는 $64.76({\pm}6.71)$점으로, 점수가 높을수록 구강 문제로 인한 삶의 질의 영향이 낮은 것이다. 청소년의 구강건강 관련 삶의 질에 영향을 미치는 요인은 1년 내 구강 내 통증 경험이 있을수록 구강건강 관련 삶의 질이 낮은 것으로 나타났으며, 주관적 구강건강 상태, 학년 순으로 영향이 있는 것으로 나타났다. 일생 동안 신체적, 정신적 변화가 가장 많은 청소년 시기의 삶의 질은 매우 중요하다. 이러한 삶의 질에 구강건강이 미치는 영향에 대해 조사한 연구로 매우 의미 있는 연구이며, 청소년의 구강건강 불편 증상을 최소화하기 위한 노력이 필요할 것으로 생각된다.

• 대한치과보철학회지
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• 제31권1호
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• pp.129-150
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• 1993

Since the restoration or masticatory function is the most important aim of implants, it should be substituted for the role of natural teeth and deliver the stress to the bone under the continous load during function. In natural teeth, stress distribution can be obtained through enamel, dentin and cementum and the elasticity of the periodontal ligament play a role of buffering action. In contrast, implant prosthesis has a very unique characteristics that it delvers the load directly to bone through the implant and superstructure. This fact arise the needs to evaluate the stress distribution of the implant in the mechnical aspects, which has a similar role of natural teeth but different pathway of stress. With 3 kinds of implant in prevalent use, 2 types of experimental PEA implant models were made, axisymmetric and 2-dimensional type. In axisymmetric model, the stiffness of the part including the prosthesis and implant which extrude out of bony surface could be calculated with displacement of the superstructure un er 100N vertical load and then damping effects could be determined through this stiffness. In axisymmetric FEA model, load to the bone could be deduced by evaluation the stress distribution of the designed surface under the 100N vertical force and in 2-dimensional model, 100N eccentric vertical load and 20N horizontal loda. The result are as follows. 1. In every implant, stress to the bone tends to be concenturated on the cortical bone. 2. Though the stress of the cancellous bone is larger at the apex of implants, it is less compared with cortical bone. 3. Under 20N horizontal load, stress of the left and right sides of implant shows a symmetrical pattern. But under 100N eccentric vertical load, loaded side shows much larger stress value. 4. In the 1mm interface, stress distribution among implants tend to have a similar pattern. But under 20N horizontal load apposite side of being loaded shows less stress in IMZ. 5. In the case of screw type implant, stress tends to vary along with screw shape. 6. According to the result determined with microstrain, cancellous bone id generally under the condition of overload, while cortical bone is usually within the limitation of physiologic load. 7. In the Branemark implant, maximum stress to the cortical bone is larger than any other implant except for the condition of 20N horizontal force and 0.05mm interface. 8. Damping effects of implants is maximum in IMZ.

• Journal of Periodontal and Implant Science
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• 제24권2호
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• pp.261-270
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• 1994

The purpose of this study was to evaluate relationship of probing attachment levels, radiographic measurements and surgical measurements according to gingival inflammatory condition. Patients with incipient to moderate periodontitis were selected. Upper and lower premolar and molar teeth excluding third molars were measured. At first visit, gingival index and bleeding on probing were taken, and subjects were grouped into 4 categories as follows : Experimental group I : gingival index 1 and no bleeding on probing. Experimental group II : gingival index 2 and no bleeding on probing absent. Experimental group III : gingival index 1 and bleeding on probing present. Experimental group IV : gingival index 2 and bleeding on probing present. Probing attachment levels were measured with manual probe on mesial and distal surfaces from cementoenamel junctions to terminal ends of probe. Radiographic measurements were made to assess bone loss by measuring the distance from cementoenamel junction to the alveolar crest. After thorough scating, a flap was raised exposing the alveolar bone and surgical measurements were made from cementoenamel junction to alveolar bone. The results were as follows: 1. Differences between probing attachment level and radiographic measurements showed $1.01{\pm}0.73mm$ for experimental group I, $0.98{\pm}0.48mm$ for experimental group II, $0.59{\pm}0.66mm$ for experimental group III, $0.98{\pm}0.38mm$ for experimental group IV and with no significant difference between groups. 2. Differences between probing attachment level and surgical measurements showed $1.36{\pm}0.80mm$ for experimental group I, $1.47{\pm}0.54mm$ for experimental group II, $1.06{\pm}0.39mm$ for experimental group III, $1.41{\pm}0.40mm$ for experimental group IV and with no significant difference between groups. 3. Differences between surgical and radiographic measurements showed $0.36{\pm}0.48mm$ for experimental group I, $0.51{\pm}0.54mm$ for experimental group II, $0.57{\pm}0.72mm$ for experimental group III, $0.41{\pm}0.49mm$ for experimental group IV and with significant difference between experimental group I and experimental group II, III, IV(P<0.05).

• Journal of Periodontal and Implant Science
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• 제46권4호
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• pp.254-265
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• 2016

Purpose: The aim of this study was to determine the influence of anatomical conditions on primary stability in the models simulating posterior maxilla. Methods: Polyurethane blocks were designed to simulate monocortical (M) and bicortical (B) conditions. Each condition had four subgroups measuring 3 mm (M3, B3), 5 mm (M5, B5), 8 mm (M8, B8), and 12 mm (M12, B12) in residual bone height (RBH). After implant placement, the implant stability quotient (ISQ), Periotest value (PTV), insertion torque (IT), and reverse torque (RT) were measured. Two-factor ANOVA (two cortical conditions${\times}$four RBHs) and additional analyses for simple main effects were performed. Results: A significant interaction between cortical condition and RBH was demonstrated for all methods measuring stability with two-factor ANOVA. In the analyses for simple main effects, ISQ and PTV were statistically higher in the bicortical groups than the corresponding monocortical groups, respectively. In the monocortical group, ISQ and PTV showed a statistically significant rise with increasing RBH. Measurements of IT and RT showed a similar tendency, measuring highest in the M3 group, followed by the M8, the M5, and the M12 groups. In the bicortical group, all variables showed a similar tendency, with different degrees of rise and decline. The B8 group showed the highest values, followed by the B12, the B5, and the B3 groups. The highest coefficient was demonstrated between ISQ and PTV. Conclusions: Primary stability was enhanced by the presence of bicortex and increased RBH, which may be better demonstrated by ISQ and PTV than by IT and RT.

• 한국콘텐츠학회논문지
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• 제11권11호
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• pp.264-273
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• 2011

본 연구는 노년인구의 증가에 따른 치아상실로 매년 증가하고 있는 임플란트 치료에 있어 대상 환자가 치료를 결정하는데 영향을 미치는 요인을 분석하여 긍정적인 인식 전환과 임상적 기준 마련에 관한 기초자료를 제공하는데 있다. 2010년 7월부터 약 3개월간 서울시와 경기도 소재의 13개 치과 의료기관의 환자 217명을 대상으로 임플란트 치료군과 비치료군으로 구분하여 설문조사를 시행하였다. 임플란트 치료군은 50대(30.3%)가, 비치료군은 20대(35.7%)가 가장 높았고, 치료군 환자의 구강관리가 양호하였으며, 긍정적인 태도를 보였다. 다중로지스틱 회귀분석으로 분석한 결과, 임플란트 치료결정에 영향을 미치는 요인은 연령, 성별, 교육기간, 월 소득, 치주조직상태, 정기검진여부, 상담태도, 병원신뢰도 등으로 나타났다. 따라서 예방적 차원의 정기적인 구강검진과 관리의 필요성에 대한 교육 및 홍보가 필요하며, 임플란트 치료결정에 긍정적인 인식을 가질 수 있도록 의료진의 상담 기술을 키우고 병원의 신뢰도 향상을 위한 다각도의 노력이 필요하다. 아울러 임플란트 치료 결정에 환자의 막연한 주관적 판단보다는 결정을 용이하게 할 수 있는 명확한 임상적 기준 마련이 필요하며, 비용 부담없이 임플란트 치료를 받을 수 있도록 정부 차원의 재정적 지원이나 정책적인 대안이 요구된다.

• 치위생과학회지
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• 제13권4호
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• pp.426-433
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• 2013

본 연구는 국민건강영양조사 제4기 자료를 이용하여 미취학 아동의 치아우식상태와 어머니 구강건강상태와의 관련성을 파악하고자 하였다. 원시자료에서 가족 아이디 변수를 이용해 아동과 어머니를 짝짓기하여 최종 823명의 자료를 추출하였다. 통계분석은 복합표본설계를 반영하기 위하여 가중치를 고려한 분석을 실시하였으며, 어머니의 인구사회학적 특성과 구강건강행태 및 구강건강상태에 따른 자녀의 우식경험유치지수의 차이를 분석하고, 이들 간의 관련성을 알아보기 위해 다중회귀분석을 시행하였다. 분석결과, 미취학 아동의 우식경험유치지수는 어머니의 사회인구학적 특성 중 나이에 따른 차이가 통계적으로 유의하였으며 (p=0.005), 어머니의 구강건강행태 중 지난 1년 동안 치과검진 유무에 따른 차이가 통계적으로 유의하였다(p=0.034). 또한 어머니의 우식경험영구치지수에 따른 자녀의 우식경험유치지수의 차이도 통계적으로 유의하였다(p=0.016). 한편 어머니의 인구사회학적 특성과 구강건강행태를 보정한 후, 어머니와 자녀의 구강건강상태 관련성을 분석한 결과 어머니의 우식경험영구치지수는 자녀의 우식경험유치지수와 유의한 관련성이 있는 것으로 나타났다. 따라서 어머니의 구강건강상태가 양호할수록 자녀의 구강건강상태 또한 양호함을 알 수 있었다. 이러한 연구 결과는 어머니의 구강건강상태가 자녀들에게 영향을 미칠 수 있음을 보여주므로 어머니들의 구강건강상태를 향상시킬 수 있는 효과적인 구강보건교육 프로그램이 개발되어야 한다고 생각된다.

• Journal of Periodontal and Implant Science
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• 제32권1호
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• pp.129-142
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• 2002

Epithelial-mesenchymal interaction plays a important role in cell growth and differentiation. This interaction is already well known to have an importance during the organ development as well as cell growth and differentiation. However, in vitro experimental model is not well developed to reproduce in vivo cellular microenvironment which provide a epithelial-mesenchymal interaction. Because conventional monolayer culture lacks epithelial-mensenchymal interaction, cultivated cells have an morphologic, biochemical, and functional characteristics differ from in vivo tissue. Moreover, it's condition is not able to induce cellular differention due to submerged culture condition. Therefore, the aims of this study were to develop and evaualte the in vitro experimental model that maintains epithelial-mesenchymal interaction by organotypic raft culture, and to characterize biologic properties of three-dimensionally reconstituted oral keratinocytes by histological and immunohistochemical analysis. The results were as follow; 1. Gingival keratinocytes reconstituted by three-dimensional organotypic culture revealed similar morphologic characteristics to biopsied patient specimen showing stratification, hyperkeratinosis, matutation of epithelial architecture. 2. Connective tissue structure was matured, and there is no difference during stratification period of epithelial 3-dimensional culture. 3. The longer of air-exposure culture on three-dimensionally reconstituted cells, the more epithelial maturation, increased epithelial thickness and surface keratinization 4. In reconstitued mucosa, the whole epidermis was positively stained by anti-involucrin antibody, and there is no difference according to air-exposured culture period. 5. The Hsp was expressed in the epithelial layer of three-dimensionally cultured cells, especially basal layer of epidermis. The change of Hsp expression was not significant by culture stratification. 6. Connexin 43, marker of cell-cell communication was revealed mild immunodeposition in reconstitued epithelium, and there is no significant expression change during stratification. These results suggest that three-dimensional oragnotypic co-culture of normal gingival keratinocytes with dermal equivalent consisting type I collagen and gingival fibroblasts results in similar morphologic and immunohistochemical characteristics to in vivo patient specimens. And this culture system seems to provide adequate micro-environment for in vitro tissue reconstitution. Therefore, further study will be focused to study of in vitro gingivitis model, development of novel perioodntal disease therapeutics and epithelial-mensenchymal interaction.

• 구강회복응용과학지
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• 제16권3호
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• pp.221-227
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• 2000

Provisional fixed partial dentures(FPDs) are an important part of many prosthodontic treatment procedures. These provisional fixed prostheses must fulfill biologic, mechanical, and esthetic requirements to be considered successful. Consideration of all these factors and requirements are important because provisional resin restorations may be worn over a long period to assess the results of periodontal and endodontics therapies, and also during the restorative phase of implant reconstructive procedures. This in vitro study examined flexual strength of four resins commonly used for fixed provisional prostheses. The effects of polymerization conditions were also evaluated. The four resins tested were : Caulk Temporary bridge resin(L.D. Caulk Co. Dentsply International Millford), Jet(Lang Dental Mfg. Co. Chicago. ILL. U.S.A), Alike (Coe Laboratories. Inc. Chicago. ILL. U.S.A) and Tokuso Curefast (Coe Laboratories. Inc. Chicago. ILL. U.S.A) The test specimens were 65mm long, 14mm wide, and 3.5mm thickness. 10 specimens of four resins were cured for 15 minutes at atmospheric pressure and 10 specimens of four resins were cured at an additional pressure of approximately 20 psi. A total of 80 specimens were prepared. The flexual strength was determined by three-point bending test. Data were analysed with the Paired samples T-test and Tukey student-range test Within the limitations imposed in this study, the following conclusions can be drawn : 1. Under the condition of bench curing, Caulk Temporary bridge resin showed the highest flexual strength. In decreasing order, the flexual strength of the other materials was as follows : Jet, Tokuso Curefast, Alike, and Caulk Temporary bridge resin demonstrated significantly higher strength than other resins. 2. Under the condition of pressure curing, Jet showed the highest flexual strength. In decreasing order, the flexual strength of the other materials was as follows : Caulk Temporary bridge resin, Tokuso Curefast, and Alike. There were all statistically significant differences among four resins 3. There was a statistically significant difference between bench- and pressure-cured specimens in all four materials.

• 대한한방내과학회지
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• 제16권2호
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• pp.146-177
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• 1995

The purpose of this study was to investigate the relationship between the teeth and Zhang-Fu(臟腑), dental diseases, and the hygiene of the mouth through the literature of oriental medicine. First, the relatonship between the teeth and Zhang-Fu is reviewed as follows: The teeth are influenced by Shen(腎) because they are the end of bone and Biao(標) of Shen. Gingiva is related to Wei(胃) and Da-Chang(大腸) because it is passed by Yangming-Channel(陽明經). The growth and nutrition of teeth depends on Shen. The pathological condition of Shen causes the gingival atrophy, the loose of teeth, dedentition due to aging, withering of teeth, and tartar: whereas the pathological condition of Wei and Da-Chang causes toothache, gingivitis, inflamed gums, bad breath, and gingival hemorrhage. Second, the causes and therapies of dental diseases through the literature can be summarized as follows: The major causes of toothache are the pathogenic condition of wind-heat and wind-cold, the heat syndrome of Wei, the damp-heat of intestine, flaring-up of fire of deficiency type, rotten tooth, etc... The principal causes of dedentition and the shaking and loose of teeth are the deficiency of Shen, and the rest of causes are the damp-heat of Yangming. Gingival atrophy is caused by the deficiency of Shen, whereas the gingival hemorrhage comes from the factors in the pathogenic factor of wind-heat of Yangming-Channel, the heat syndrome of stomach, and the deficiency of Shen. The causes of grinding of teeth during sleeping are stomach-heat, and the delayed dentition and the withering result from the deficiency of Shen-Jing.(腎精) The principal therapies of toothache are removing wind and heat, clearing away heat and prompting diuresis, clearing away the stomach-heat, replenishing vital essence to tonify the Shen, relieving superficial syndrome by wind-cold, and alleviating pain by destroying parasites. For the prescription of the principal therapies, there are Xijio Dihuang Tang, Jiajian Ganlu Yin, Qufeng Wan, Qingwei San, Tiaowei Chenggi Tang Shengong Wan, Liangge San Qingwei Tang Yunu Jian, Liuwei Dihuang Wan Zuogui Yin Bawei Wan Wanshao Dan, Xixin San Badou Wan Gianghuo Fuzi Tang, Jiuzi Tang Badou Wan, etc... The therapies of dedentition and the shaking and loose of teeth are replenishing vital essence to tonify the Shen, and warming and recuperating the Shen-Yang: as the prescription, there are Liuwei Dihuang Wana Zuogui Yin, and Bawei Wan Anshen Wan Wanshao Dan Yougui Wan etc... The therapies of gingival hemorrhage are clearing away the stomach-heat, replenishing vital essence to tonify the Shen, warming and recuperating the Shen-Yang(腎陽), and moisturing and purging intence heat with the prescription of Tiaowei Chenggi Tang Xijiao Dihuang Tang, Liuwei Dihuang Wan Zuogui Yin, Bawei Wan Anshen Wan, and Yunu Jian. The therapy of gingival atrophy is replenishing vital essence to tonify the Shen in the prescription of Liuwei Wan Bawei Wan Ziyin Dabu Wan. The therapies of grinding of teeth during sleeping are clearing away the stomach-heat and purging intense heat, and invigorating the spleen through eliminating dampness in the prescription of Qingwei San, Wumei Wan, etc... The therapy of delaed dentition is replenishing vital essence to tonify the Shen with the prescription of Liuwei Wan Buyin Jian, etc... Third, clinical treatment reports of dental diseases are reviewed as follows: The toothache due to stomach-heat was treated by medical herbs like Gypsum, Natrir Sulfas, Rehmanniae, Schizonepetal Herba, Menthae Folium, Cimicifugae Rhizoma, and Scrophulariae Radix. The therapies of toothache due to flaring-up of fire in deficiency type from deficiency of Shen provided with replenishment of vital essence to tonify the Shen and clean ministerial fire, and the prescription was the kind of Liuwei Wan, which worked very well. The therapy of dedentition and loose of teeth due to deficiency of Shen was done to stablize the teeth as tonifing the Shen with the prescription of Guchi Wan. The rate of imrovement was over 90%. The destruction of periodontal tissue due to periodonititis was cured of dispelling wind, reducing heat, and alleviating pain, It was improved by taking Zizhi Xingiong Tang, Guchi Xiaotong San, Yunii Jian, and Qingwei San about 3-7 days, and the rate of improvement was over 80%. Fourth, the prevention and regimens are reviewed as follows: As a physical and breathing exercise of the teeth, tapping teeth which stimulates the circulation of Qi(氣) and Xue(血) had been used. The tapping time of 14, 17, 36, etc... has been reported, and it should be applied based on the body condition. The medical herbs for gargling and brushing teeth have been used. Specifically, Cimicifugae Rhizoma, Gypsum, Gypsum Fibrosum, and Indigo pulrelrata Lereis have been used to reduce heat, Coptidis Rhizama and Yang Jinggu to eliminate damp-heat, Amomi Semen, Cyperi Rhizoma, Flos Caryophylli, Asari Radix, Piperis Longi Fructus, Santali Albae Lignum, Meliae Fructus, Moschus, Aquillaiae Lignum, and Borneol to promote the circulation of Qi and to relieve pain, Ligustici Radix, Angelice Radix, Rhizoma Nardostachydis, Tribuli Semen to relieve superficial syndrome by means of diaphiresis, and Cnidii Rhizoma, Angelicae sinensis Radix, and Olibanum to promote blood circulation to stop pain.