• 한국의류학회지
• /
• 제21권4호
• /
• pp.718-726
• /
• 1997

The purpose of the study was to investigate the interaction effect of garment formality, Yin -Yang level, and body type of children on impression formation. The experimental materials developed for the study were a set of stimuli (8 color photographs) and a response scale (34 bipolar adjectives) and the subjects were 267 elementary school teachers in Taejon area who were responsible for the first grade students. Results were as follows; The 3 independent variables showed significant effects on impression of the 4 factors (sociability, potency, dynamics, cooperation) of impression. Since body type had interaction effects with garment formality and subject's gender, the two body types were separately analyzed. For the normal body type, only the garment formality affected on impression of cooperation factor But for the large body type, garment formality affected on impression of potency dimension, garment Yin-Yang level affected on social and dynamics dimension, and subject's gender affected on social and cooperation dimensions. The body type was the most salient variables and clothing effects for the large body type was significantly different for the normal body type. It is concluded that the results support the cognitive categorization theory on impression formation.

• 치위생과학회지
• /
• 제14권2호
• /
• pp.94-100
• /
• 2014

본 연구는 임상에서 널리 사용되고 있는 3종류의 탄성 인상재를 치과용 백색광 스캐너로 스캔하여 얻어진 데이터와 석고 지대치 모형과의 차이를 비교분석하였다. 인상재의 물성 차이가 3차원 디지털 모형의 정확성에 어떠한 영향을 미치는지 3차원 중첩 분석법을 통해 평가함으로써 다음과 같은 결과를 얻었다. 석고 지대치 모형과 3종류의 인상재를 토대로 채득된 디지털 모형의 차이를 비교한 결과, HB 그룹이 $9.80{\pm}1.52{\mu}m$ 로 가장 큰 차이를 보였으며, XLB 그룹이 $5.10{\pm}1.45{\mu}m$로 가장 작은 차이를 나타내었다. 음형의 인상체 간의 정확성에 있어서는 측정된 평균값이 통계적으로 유의한 차이를 보였다(p<0.05). Color difference map의 결과에서도 HB 그룹에 비해 XLB 그룹이 오차가 0에 가까운 연두색의 분포가 넓게 나타났기에, 더욱 안정적이며 정확한 디지털 모형 채득이 가능한 탄성 인상재라는 결론을 내릴 수 있다. 아직까지는 음형의 인상체 스캔방식은 표면의 혈흔이나 난반사, 중합 수축 등 좀 더 개선하고 보완해야 할 문제점들이 존재하기 때문에 널리 사용하진 않지만, 석고 모형과 비교하였을 때 전체적인 오차범위가 크지 않기에 임상적으로 허용될만한 수준으로 생각된다.

• 한국의류학회지
• /
• 제23권7호
• /
• pp.921-928
• /
• 1999

The purpose of this study were 1) to find out impression dimensions of the dress wearer with various motifs 2) to evaluate the impression effects of motifs in Korean traditional dress for women. The research method was a quasi-experimental with the between subjects design. The experimental materials developed for the study were a set of stimuli and response scale. The stimuli were consisted of 12 drawings with full factorial design of 3 independent variables : motif sorts (2:flower animal) motif types(2: realistic stylized) motif arrangements(3: all over the traditional to modern) The stimuli consisted of color photographs and color of clothing and motifs was controlled the blue. The response scales were consisted of 30 bi-polar adjectives. The subjects were 333 undergraduate college students of Taejon. The data was analyzed by factor analysis MANOVA and Duncan's multiple range test. Results were as follows: 1. The wearer's impression were consisted of the 3 different dimensions : attractiveness · dignity dimension. Interaction effect among motif sorts motif types and motif arrangements was significant on the same dimension. Interaction effect between motif sorts and motif arrangements was significant on the visibility dimension. 3. The motif arrangements were a significant variable on the attractiveness·dignity and the evaluation dimension. The traditional arrangement and the modern arrangement showed more faborable impression and the all over arrangement showed less favorable impression on the attractiveness·dignity dimension. The all over arrangement showed positive impression on the evaluation dimension and the traditional arrangement and the modern arrangement showed negative impression on the same dimension. There were no significant difference between flower sort and animal sort and also no significant difference between realistic type and stylized type in their impression effects.

• The Journal of Advanced Prosthodontics
• /
• 제11권3호
• /
• pp.179-186
• /
• 2019

PURPOSE. The purpose of this study was to compare two novel impression methods and a conventional impression method for edentulous jaws using 3-dimensional (3D) analysis software. MATERIALS AND METHODS. Five edentulous patients (four men and one woman; mean age: 62.7 years) were included. Three impression techniques were used: conventional impression method (CI; control), simple modified closed-mouth impression method with a novel tray (SI), and digital impression method using an intraoral scanner (DI). Subsequently, a gypsum model was made, scanned, and superimposed using 3D analysis software. Mean area displacement was measured using CI method to evaluate differences in the impression surfaces as compared to those values obtained using SI and DI methods. The values were confirmed at two to five areas to determine the differences. CI and SI were compared at all areas, while CI and DI were compared at the supporting areas. Kruskal-Wallis test was performed for all data. Statistical significance was considered at P value <.05. RESULTS. In the comparison of the CI and SI methods, the greatest difference was observed in the mandibular vestibule without statistical significance (P>.05); the difference was < 0.14 mm in the maxilla. The difference in the edentulous supporting areas between the CI and DI methods was not significant (P>.05). CONCLUSION. The CI, SI, and DI methods were effective in making impressions of the supporting areas in edentulous patients. The SI method showed clinically applicability.

• The Journal of Advanced Prosthodontics
• /
• 제15권4호
• /
• pp.179-188
• /
• 2023

PURPOSE. This in vitro study aimed to evaluate the performance of digital intraoral scanners in a completely edentulous patient with angled and parallel implants. MATERIALS AND METHODS. A total of 6 implants were placed at angulations of 0°, 5°, 0°, 0°, 15°, and 0° in regions #36, #34, #32, #42, #44, and #46, respectively, in a completely edentulous mandibular polyurethane model. Then, the study model created by connecting a scan body on the implants was scanned using a model scanner, and a 3D reference model was obtained. Three different intraoral scanners were used for digital impressions (PS group, TR group, and CS group, n = 10 in each group). The distances and angles between the scan bodies in these measurement groups were measured. RESULTS. While the Primescan (PS) impression group had the highest accuracy with 38 ㎛, the values of 104 ㎛ and 171 ㎛ were obtained with Trios 4 IOSs (TR) and Carestream 3600 (CS), respectively (P = .001). The CS scanner constituted the impression group with the highest deviation in terms of accuracy. In terms of dimensional differences in the angle parameter, a statistically significant difference was revealed among the mean deviation angle values according to the scanners (P < .001). While the lowest angular deviation was obtained with the PS impression group with 0.185°, the values of 0.499° and 1.250° were obtained with TR and CS, respectively. No statistically significant difference was detected among the impression groups in terms of precision values (P > .05). CONCLUSION. A statistically significant difference was found among the three digital impression groups upon comparing the impression accuracy. Implant angulation affected the impression accuracy of the digital impression groups. The most accurate impressions in terms of both distance and angle deviation were obtained with the PS impression group.

• 대한치과보철학회지
• /
• 제54권4호
• /
• pp.379-386
• /
• 2016

목적: 본 연구에서는 전통적 인상채득과 디지털 인상채득을 모두 경험한 환자들의 만족도를 조사하여 다양한 항목에 대하여 비교 분석하고자 하였다. 재료 및 방법: 구강 내 디지털 인상채득의 방법을 사용하는 5개의 치과병원에서, 보철 치료를 위해 기존의 인상재를 이용한 방법과 디지털 인상채득을 모두 경험한 만 20세 이상의 성인 환자 170명을 대상으로, 2015년 10월부터 2016년 4월까지 설문조사를 실시하였다. 총128부의 설문지를 분석 자료로 이용하였으며, 빈도분석, 다중응답 빈도분석, 기술통계, 비모수 검정, 교차 분석을 시행하였고, 유의수준은 0.05로 설정하였다. 결과: 디지털 인상채득의 이유는 '임플란트치료'(43.8%), '크라운치료'(30.5%), '인레이치료'(15.6%) 순서로 나타났다. 전통적 인상채득의 평균 만족도보다 디지털 인상채득의 평균 만족도가 유의하게 더 높았다 (P<.05). 재선택하고 싶은 인상채득 방법으로는 전통적 인상채득(11.7%) 보다 디지털 인상채득(60.2%)이 더 높게 나타났다. 디지털 인상채득을 재선택한 이유로는 '구토반사가 없어서'(35.1%), '3D디지털 스캔이라 신뢰가 가서'(33.8%), '시간이짧아서'(33.8%) 순으로 나타났다. 결론: 환자 만족도 및 다시 선택하고 싶은 인상채득의 방법으로 전통적 인상채득 보다 디지털 인상채득의 선택이 더 높게 나타났다.

• 치위생과학회지
• /
• 제10권6호
• /
• pp.459-464
• /
• 2010

본 연구는 실리콘 고무인상재의 보관온도에 따른 작업 시간과 압축 시 변형율, 탄성회복율, 점조도에 관한 물리적 특성에 대해서 평가하였으며, 다음과 같은 결과를 얻었다. 1. 작업시간은 저온의 온도유지장치에서 보관한 인상재가 실온이나 고온에서 보관한 인 상재보다 유의하게 크게 나타났고(P<0.05), 실온과 고온에서 보관한 인상재는 유의차 가 없었다. 2. 압축변형율은 저온 온도유지장치에서 보관한 인상재가 실온이나 고온에서 보관한 인 상재보다 유의하게 컸으며(P<0.05), 실온과 고온에서 보관한 인상재는 유의차가 없 었다. 3. 탄성회복율은 인상재를 보관한 각 저장온도에 따라 유의한 차이가 있는 것으로 나타 났으며(P<0.05), 온도가 높아짐에 따라 증가하였다. 4. 점조도는 인상재를 보관한 각 저장온도에 따라 유의한 차이가 있는 것으로 나타났으 며(P<0.05), 온도가 높아짐에 따라 감소하였다.

• The Journal of Advanced Prosthodontics
• /
• 제16권1호
• /
• pp.57-65
• /
• 2024

PURPOSE. The aim of this stuldy was to compare the clinical marginal fit of CAD-CAM inlays obtained from intraoral digital impression or addition silicone impression techniques. MATERIALS AND METHODS. The study included 31 inlays for prosthodontics purposes of 31 patients: 15 based on intraoral digital impressions (DI group); and 16 based on a conventional impression technique (CI group). Inlays included occlusal and a non-occlusal surface. Inlays were milled in ceramic. The inlay-teeth interface was replicated by placing each inlay in its corresponding uncemented clinical preparation and taking interface impressions with silicone material from occlusal and free surfaces. Interface analysis was made using white light confocal microscopy (WLCM) (scanning area: 694 × 510 ㎛²) from the impression samples. The gap size and the inlay overextension were measured from the microscopy topographies. For analytical purposes (i.e., 95-%-confidence intervals calculations and P-value calculations), the procedure REGRESS in SUDAAN was used to account for clustering (i.e., multiple measurements). For p-value calculation, the log transformation of the dependent variables was used to normalize the distributions. RESULTS. Marginal fit values for occlusal and free surfaces were affected by the type of impression. There were no differences between surfaces (occlusal vs. free). Gap obtained for DI group was 164 ± 84 ㎛ and that for CI group was 209 ± 104 ㎛, and there were statistical differences between them (p = .041). Mean overextension values were 60 ± 59 ㎛ for DI group and 67 ± 73 ㎛ for CI group, and there were no differences between then (p = .553). CONCLUSION. Digital impression achieved inlays with higher clinical marginal fit and performed better than the conventional silicone materials.

• 대한치과보철학회지
• /
• 제30권2호
• /
• pp.233-245
• /
• 1992

The purpose of this study was to evaluate the demensioal stability and wettability of several rubber impression materials. Impressions were made from a metal master die machined to stimulate five full veneer crown preparations symmetrically placed in an arch form. Cast from impressions were measured about ; 1) intrapreparation distance 2) lower base diameter 3) length. For comparing materials were formed against a smooth surface. The advancing contact angle of a saturated aqueous solution of $CaSO_4$ on the impression materials was measured after 1 minute. Mean contact angle were calculated and results were analyzed. Results were as follows : 1. As the intrapreparation distance, hydrophilic addition-cured silicone had the smallest change and condensation-cured silicone had the largest one. 2. As the lower base diameter, traditional addition-cured silicone had the smallest change and polyether had the largest one. 3. As the height, traditional addition-cured silicone had the smallest change and polyether had the largest one. 4. As the contact angle, polyether had the smallest change and condensation-cured silicone had the largest one.

• 패션비즈니스
• /
• 제17권5호
• /
• pp.57-69
• /
• 2013

The purpose of this study is to compare the traditional shopping model and virtual avatar fitting model with regards to credibility and favorable impression effects on shopping mall satisfaction, product preferences, and purchasing intentions of apparel e-commerce. Questionnaires are distributed to 10-30s years old consumers who live in Seoul. Data are analyzed by descriptive statistics, Cronbach's ${\alpha}$, and regression analysis. The results are that the provoked credibility and favorable impression from the traditional shopping model affects the consumers' shopping mall satisfaction and buying intention in descending order. In additional, the credibility from traditional shopping model affects the product preference. The provoked credibility from the virtual fitting model influences the consumers' product preferences, and buying intentions. The favorable impression from the virtual fitting model affects shopping mall satisfaction. In general, provoked credibility from virtual avatar fitting model and traditional shopping model play key roles which could influence the consumers' buying intention.