• Maxillofacial Plastic and Reconstructive Surgery
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• 제41권
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• pp.31.1-31.7
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• 2019

Background: To test the hypothesis that in profile smiling view, for ideal aesthetics, a tangent to the labial face of the maxillary central incisor crowns should be approximately parallel to the true vertical line and thereby perpendicular to the true horizontal line. Methods: An idealized female image was created with computer software and manipulated using the same software to construct an "ideal" female profile image with proportions, and linear and angular soft tissue measurements, based on currently accepted criteria for idealized Caucasian profiles. The maxillary incisor labial face tangent was altered in 5° increments from 70 to 120°, creating a range of images, shown in random order to 70 observers (56 lay people and 14 clinicians), who ranked the images from the most to the least attractive. The main outcome was the preference ranks of image attractiveness given by the observers. Results: The most attractive inclination of a tangent to the labial face of the maxillary incisor crowns in profile view in relation to the true horizontal line was 85°, i.e. 5° retroclined from a perpendicular 90° inclination. The most attractive range appears to be between 80 and 90°. Excessive proclination appeared to be less desirable than retroclination. Beyond 105° most observers recommend treatment. Conclusion: In natural head position, the ideal inclination of the maxillary incisor crown labial face tangent in profile view will be approximately parallel to the true vertical line and thereby approximately perpendicular to the true horizontal line.

• 대한치과교정학회지
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• 제47권2호
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• pp.100-107
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• 2017

Objective: To analyze the long-term changes in maxillary arch widths and buccal corridor ratios in orthodontic patients treated with and without premolar extractions. Methods: The study included 53 patients who were divided into the extraction (n = 28) and nonextraction (n = 25) groups. These patients had complete orthodontic records from the pretreatment (T1), posttreatment (T2), and postretention (T3) periods. Their mean retention and postretention times were 4 years 2 months and 17 years 8 months, respectively. Dental models and smiling photographs from all three periods were digitized to compare the changes in three dental arch width measurements and three buccal corridor ratios over time between the extraction and nonextraction groups. Data were analyzed using analysis of variance tests. Post-hoc multiple comparisons were made using Bonferroni correction. Results: Soft-tissue extension during smiling increased with age in both groups. The maximum dental width to smile width ratio (MDW/SW) also showed a favorable increase with treatment in both groups (p < 0.05), and remained virtually stable at T3 (p > 0.05). According to the MDW/SW ratio, the mean difference in the buccal corridor space of the two groups was $2.4{\pm}0.2%$ at T3. Additionally, no significant group ${\times}$ time interaction was found for any of the buccal corridor ratios studied. Conclusions: Premolar extractions did not negatively affect transverse maxillary arch widths and buccal corridor ratios. The long-term outcome of orthodontic treatment was comparable between the study groups.

• 대한치과보철학회지
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• 제42권5호
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• pp.524-534
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• 2004

Statement of problem: The meaning of the beauty has a little different nature according to a time, culture, and nation. Purpose : This study was undertaken to estimate the geometric esthetic criteria for Korean woman by analysis of facial photograph in a smiling. Material and methods: The facial photographs of 678 Korean beautiful woman were collected from Miss Korea candidates(from 1971 to 2003 year). The dento-facial composition was measured and analyzed geometrically on computer monitor using $Adobe^{(R)}$ $Photoshop^{(R)}$ 7.0. The statistical significance of the differences among the 4 decade groups was estimated by a $x^2$ test. Result : The Korean beautiful woman skewed the geometric characteristics such as the 'coincidence' (83.0%) between facial midline and dental midline, the 'normal' (96.9%) alignment and arrangement of upper anterior teeth. the 'average' (79.1%) position and 'upward' (53.4%) curvature of upper lip, the 'parallel' (85.7%) relationship between the lower lip and upper anterior incisal curvature, the 'touching' (49.9%) and 'not-touching' (44.8%) relationship between upper anterior incisor and towel lip, the 'first premolar' (54.1%) and 'second premolar' (38.9%) displayed in a smile, and the 'symmetry' (89.4%) of smile. There was statistical significance among the 4 decades in the respect of the upper lip curvature, the relationship between upper anterior incisor and lower lip, and the most posterior teeth displayed in a smile (p<0.05). Conclusion : The Korean beautiful woman showed similar results to the western esthetic criteria in the some respects and the tendency that the Korean woman had more active smiling recently.

• 대한두개안면성형외과학회지
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• 제12권2호
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• pp.125-128
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• 2011

Purpose: Asymmetric crying facies is caused by agenesis or hypoplasia of the depressor anguli oris muscle and is often associated various anomalies. Several static and dynamic surgical interventions have been reported, but their effects are unreliable. We report on the successful use of botulinum toxin A in an asymmetric crying facies patient. Methods: A 4-year-old girl presented with a facial asymmetry on crying or smiling. Physical examination revealed that her face had no asymmetry at rest. However, the patient showed characteristic asymmetry when smiling, crying, and with other normal facial movements. Asymmetric crying facies was clinically suspected and the weakness of left depressor anguli oris was present on electrophysiology study. Fifteen units of botulinum toxin type A were injected to the right depressor anguli oris muscle. Results: The patient showed the prominent improvement in the facial symmetry without significant complication and the effect persisted until 3 months post injection. Conclusion: Asymmetric crying facies was treated successfully with botulinum toxin A and this method was easy and noninvasive.

• 대한두개안면성형외과학회지
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• 제22권6호
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• pp.303-309
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• 2021

Background: Transferring the hypoglossal nerve to the facial nerve using an end-to-end method is very effective for improving facial motor function. However, this technique may result in hemitongue atrophy. The ansa cervicalis, which arises from the cervical plexus, is also used for facial reanimation. We retrospectively reviewed cases where facial reanimation was performed using the ansa cervicalis to overcome the shortcomings of existing techniques of hypoglossal nerve transfer. Methods: The records of 15 patients who underwent hypoglossal nerve transfer were retrospectively reviewed. Three methods were used: facial reanimation with hypoglossal nerve transfer (group 1), facial nerve reanimation using the ansa cervicalis (group 2), and sural nerve interposition grafting between the hypoglossal nerve and facial nerve (group 3). In group 1, the ansa cervicalis was coapted to neurotize the distal stump of the hypoglossal nerve in a subset of patients. Clinical outcomes were evaluated using the House-Brackmann (H-B) grading system and Emotrics software. Results: All patients in group 1 (n= 4) achieved H-B grade IV facial function and showed improvements in the oral commissure angle at rest (preoperative vs. postoperative difference, 6.48° ± 0.77°) and while smiling (13.88° ± 2.00°). In groups 2 and 3, the oral commissure angle slightly improved at rest (group 2: 0.95° ± 0.53°, group 3: 1.35° ± 1.02°) and while smiling (group 2: 2.06° ± 0.67°, group 3: 1.23° ± 0.56°). In group 1, reduced tongue morbidity was found in patients who underwent ansa cervicalis transfer. Conclusion: Facial reanimation with hypoglossal nerve transfer, in combination with hypoglossal nerve neurotization using the ansa cervicalis for complete facial palsy patients, might enable favorable facial reanimation outcomes and reduce tongue morbidity. Facial reanimation using the ansa cervicalis or sural nerve for incomplete facial palsy patients did not lead to remarkable improvements, but it warrants further investigation.

• 한국콘텐츠학회논문지
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• 제21권6호
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• pp.678-686
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• 2021

미소 짓는 얼굴은 친근하고 따뜻한 인상을 전달하여 대인 관계에 긍정적인 효과를 가져 온다. 그러나 고정관념내용모델과 따뜻함과 유능함 인상의 보상효과에 따르면 미소를 짓는 표정은 타인에게 따뜻한 인상을 전해주지만, 반대 차원의 인상인 유능함에 대한 부정적 평가를 가져올 수 있다. 본 연구는 따뜻함과 유능함 인상평가의 상호 보상효과를 고가 제품군 브랜드의 소셜미디어 광고에 응용하였다. 구체적으로는 미소를 띠는 광고모델로 인해 브랜드의 따뜻함 인상이 증가하고 이는 소비자의 구매의도에 부정적인 영향을 끼칠 수 있음을 소비자의 자기해석 수준을 이용하여 살펴보았다. 분석 결과, 미소를 띠는 모델이 사용된 광고에 노출될 때, 독립적 자기해석을 하는 소비자는 상호의존적 자기해석 소비자보다 낮은 구매의도를 보여준 반면, 미소를 띠지 않은 모델이 사용된 광고에 대해서는 의존적 자기해석을 하는 소비자가 독립적 자기해석 소비자보다 낮은 구매의도를 보여주었다. 따라서 고가 제품군 브랜드 광고에 기용된 모델의 미소가 소비자의 구매의도에 미치는 영향에서 소비자의 자기해석 수준이 조절변수로 작용함이 증명되었다. 본 연구는 고가 제품군 브랜드 광고의 효과적인 광고모델 전략에 대한 이론적, 실무적 시사점을 제공하고자 한다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제48권4호
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• pp.201-206
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• 2022

Objectives: Contemporary biometric technologies have been gaining traction in both public and private security sectors. Facial recognition is the most commonly used biometric technology for this purpose. We aimed to evaluate the ability of a publicly available facial recognition application program interface to calculate similarity scores of presurgical and postsurgical photographs of patients who had orthognathic surgery. Materials and Methods: Presurgical and postsurgical photographs of 75 patients who had orthognathic surgery between January 2018 and November 2020 in our department were used. Frontal photographs of patients in relaxed and smiling states were taken. The patients were classified into three groups: Group 2 had one-jaw surgery, Group 3 had two-jaw surgery to correct mandibular prognathism, and Group 4 had two-jaw surgery to correct facial asymmetry. For comparison, photographs of 10 participants were used as controls (Group 1). Two facial recognition application programs (Face X and Azure) were used to assess similarity scores. Results: The similarity scores in the two programs showed significant results. The similarity score of the control group, which did not undergo orthognathic surgery, was the highest. The results for Group 2, Group 3, and Group 4 were higher in the order of Group 2, Group 3, and Group 4. Conclusion: In this study, all orthodontic patients were recognized as the same person using the face recognition program before and after surgery. A significant difference in similarity results was obtained between the groups with both Face X and Azure and in both relaxed and smiling states.

• 한국가정과학회지
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• 제2권2호
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• pp.1-16
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• 1999

The purposes of this research were to find the general trends of sexual harassment at work and to investigate the differences of related variables. The data were obtained through 321 employee living in Kwangju. The major findings were as follows : 1) 53.0% of respondents reported that they had experienced the offence of sexual harassment at work at least once. And 57.9% of respondents reported that they had experienced the victimization of sexual harassment at work at least once. 2) The most apparent response of victimization at work was ‘anger’. And the most frequent coping behavior was ‘smiling or joking’. 3) The offence style of sexual harassment was different by sex, men＇s marriage, and sex-role attitude. The victimization style of sexual harassment was different by sex, job, women rate in workplace, attitude toward sexual harassment, and sex-role attitude.

• 아동학회지
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• 제22권2호
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• pp.29-47
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• 2001

In this study of 79 3- and 4-year-old children, behavioral inhibition was assessed by their preschool teachers; mother-child attachment was assessed by the researchers in home visits; and mothers reported on their parenting and their child's emotionality at 6-12 months of age. Findings were that insecure attachment was related to high child's distress reactions to limitations (negative emotionality) in early infancy and to strong maternal rejection/hostility. Higher maternal sensitivity to child's inhibition was related to more secure attachment. Girls were more highly inhibited than boys. Smiling and laughter (positive emotionality) in early infancy was negatively related to child's inhibited behavior. Maternal sensitivity to child inhibition was positively related to child's inhibited behavior. Findings are consistent with Engfer's (1993) theory of gender differences in developmental paths into behavioral inhibition.

• 기본간호학회지
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• 제26권2호
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• pp.136-143
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• 2019

Purpose: The feasibility and differential effects of two music therapy methods (interventions with preferred music vs. classical relaxation music) were done to examine the effects on agitation and anxiety in patients weaning off mechanical ventilation. Methods: This pilot study was conducted using a crossover design. Six patients listened to preferred music choices and classical relaxation music. Anxiety scores were measured using the Richmond Agitation Sedation Scale (RASS), State-Trait Anxiety Inventory (STAI), and visual analog scale (VAS). Results: Patients showed a significant decrease in agitation and anxiety after both the preferred and classical relaxation music interventions. The difference in the effects of preferred music and that of classical relaxation music was not significant. As for feasibility, patients exhibited a change in agitated behaviors after the music interventions by not trying to take off medical devices and quietly listening to the music, and by smiling and moving lips along with the lyrics while listening. Conclusion: Music interventions which centered on either patients' preferences or classical relaxation music to enhance relaxation, helped reduce agitation and anxiety during the mechanical ventilation weaning process.