South Korea’s research while affiliated with Ewha Womans University and other places

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Publications (92)


Application and Analysis of the Constructive Po- tential of China's Digital Public Sphere Education
  • Preprint
  • File available

November 2024

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16 Reads

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Qiang Wan

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Wangmei Chen

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[...]

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South Korea

In the past decade, digital information technology has enabled the public to access information online and participate in public debates to a greater extent. This has led to the restructuring and transformation of public consultation. The public is interconnected and interactive within a broader scope and hierarchy. On the other hand, when examining its discourse construction and interactive methods in more detail, it is also found that the public is distributed discursively. This article analyzes the logic and patterns involved in constructing the digital public sphere. The article uses documentary and digital theory, as well as interview methods. Besides, it also explores public participation patterns, discourse contest, negotiation, and integration in the context of "discursive" distribution and hierarchical "connec-tion," and proposes the potential of the digital public sphere and initiatives to address new challenges. Additionally, this paper uses qualitative research analysis and case analysis methods for analysis. Furthermore, the limitation of this article is that it relies heavily on document descriptions for analysis and qualitative descriptions. There may be a lack of some substantive cases, which is also a limitation. The main contribution of this article is to describe the content theme of digital public sphere education.

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Training, use, and modifications related to artificial intelligence in postgraduate orthodontic programs in North America

November 2024

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63 Reads

American Journal of Orthodontics and Dentofacial Orthopedics

Introduction: The use of artificial intelligence (AI) is growing quickly and has already had a significant impact on the practice of orthodontics. This study aimed to explore the degree to which the study and use of AI have been integrated into accredited postgraduate orthodontic programs in North America. Methods: An anonymous electronic survey was sent to each of North America's 74 orthodontic residency programs, requesting information from either the program director or department chair. Data were collected and analyzed using SPSS (version 28; IBM, Armonk, NY) and Excel (Microsoft, Redmond, Wash). Results: Forty-one valid surveys were analyzed. Among the respondents, 56.1% had implemented or planned to implement AI instruction into their program. Among those who reported using this technology, 60.9% indicated that they have applied these principles for research purposes. Most respondents (87.8%) noted that they have not developed seminars and/or AI training to be included in their curriculum, whereas residents in 17.1% of respondent programs have advocated for these modifications. Lack of expertise and availability in the schedule (71.4%) are common challenges associated with the dearth of curriculum changes. Most programs (68.3%) encouraged their residents to attend continuing education for AI fundamentals, while 75.6% reported that they do not encourage their residents to use AI for patient care, research, or didactic assignments. Several programs (68.3%) reported not updating their academic manuals and syllabi with new AI policies, nor have they installed new AI detection software (80.5%). Conclusions: More than half of orthodontic residencies have implemented AI into their program in some capacity. The continual advancements of AI algorithms will require modifications to orthodontic residency programs. AI-related education should be implemented into academic curricula to provide residents with the tools necessary to thrive in an AI-driven practice. (Am J Orthod Dentofacial Orthop 2024;-:-)


Orthodontic assistant retention: Which benefit has the best prognosis for maintaining orthodontic staff?

February 2024

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18 Reads

American Journal of Orthodontics and Oral Surgery

Introduction: Dentists are struggling to recruit staff and determine which benefits to provide to their staff. The purpose of this study was to survey orthodontic staff and orthodontists regarding their staff's perception of the most and least desirable benefits and what keeps them working at their current orthodontic office. Methods: A total of 96 orthodontic staff and 67 orthodontists were surveyed. The 11-question orthodontic staff survey and 12-question orthodontist survey asked participants about office demographics, what staff liked or disliked about the office they currently work for, and overall staff satisfaction. Results: Orthodontic staff reported they were somewhat satisfied, satisfied, or very satisfied, and most orthodontists reported their staff were satisfied. Orthodontic staff reported they preferred offering full-time employment and positive staff relationships, whereas they disliked their health insurance and the lack of full-time positions the most. Moreover, 85% of orthodontists identified positive staff relationships, and 72% selected offering full-time employment positions as reasons why staff chose to stay at the office. Furthermore, 43% of orthodontists selected "other," whereas 25% selected poor staff relationships as reasons staff chose to leave the office. Predictors for staff satisfaction include positive staff relationships (8.1% of variance; P = 0.007) and disliking their salaries and bonuses less (5.8% of variance; P = 0.002). Conclusions: Our findings showed that orthodontic staff prefer full-time employment, a positive work environment , and improved health insurance benefits. Overall, orthodontists are improving their understanding of desirable staff benefits; however, there are still some benefits staff desire but are not receiving. (Am J Orthod Dentofacial Orthop Clin Companion 2024;XX:XX-XX)


Incisor torque recovery in a transfer case with iatrogenic perforation of the labial cortical plate

February 2024

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37 Reads

American Journal of Orthodontics and Dentofacial Orthopedics

This report presents an orthodontic retreatment of a patient seeking a second opinion because of severe retroclination of the maxillary incisors and anterior crossbite. Perforation of the labial cortical plate by the roots of the maxillary incisors was noted. The patient declined a surgical approach, so skeletal anchorage was planned to regain the incisor torque and improve the facial profile. The orthodontic treatment successfully repositioned the maxillary incisor roots within the alveolar bone. The facial profile was improved significantly through active vertical control. This report emphasizes the significance of torque control during space closure and the potential for active vertical control to enhance the profile. Overall, treatment stability was good after 1 year of retention. (Am J Orthod Dentofacial Orthop Clin Companion 2024;XX:XX-XX) O rthodontic treatment is sometimes unsuccessful for several reasons, including poor treatment plans, improper mechanics, unfavorable growth, and poor patient cooperation. 1 In this case, inadequate treatment planning and mechanics led to poor occlusal and facial results. Effective incisor torque control is crucial during space closure. 2 If torque control is insufficient during incisor retraction, uncontrolled tipping of the maxillary incisors may occur. In extreme cases, such as this one, perforation of the labial corti-cal plate by the incisor roots is possible. The case report relays our experience repositioning the incisor roots within the alveo-lar trough and improving the facial profile through active vertical control. This was achieved by using infrazygomatic crest (IZC), anterior subapical, and midpalatal miniscrews. DIAGNOSIS AND ETIOLOGY A 26-year-old woman presented to our clinic with multiple concerns. She reported difficulty in chewing because of uncomfortable anterior tooth contacts, as well as a convex facial profile. The patient had been undergoing orthodontic treatment for 2 years and 2 months, which involved the extraction of the maxillary first premolars and closure of the missing mandibular right first molar space. Despite the premolar extractions, the patient remained dissatisfied with the convex profile and requested further retraction of her dentition (Fig 1). Two maxillary posterior miniscrews were placed to retract the maxillary dentition. However, this resulted in severe retroclina-tion of the maxillary incisors and an anterior crossbite, which prompted her to seek a second opinion at our clinic. On examination, the patient presented with a convex lateral profile and a retrognathic mandible. Her nasolabial angle measured around 90°, whereas the labiomental fold appeared shallow with slight mentalis strain. In her smiling photograph, she had a normal gingival display and incisor show; however, retroclination of the maxillary incisors was



Figure 1: Outline of the current clinical workflow in tertiary eye centres IOP=intraocular pressure. OCT=optical coherence tomography. VA=visual acuity.
Comparisons between deep learning models, GPT, and ChatGPT
Large language models and their impact in ophthalmology

November 2023

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389 Reads

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48 Citations

The Lancet Digital Health



Skeletal anchorage-assisted interdisciplinary full-mouth rehabilitation of mutilated dentition with a canted occlusal plane and insufficient occlusal clearance

June 2023

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52 Reads

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1 Citation

A case report of mutilated dentition with multiple missing posterior teeth leading to a collapsed malocclusion with a canted occlusal plane and insufficient occlusal clearance for prosthetic reconstruction illustrates the interdisciplinary process of full-mouth rehabilitation. The patient’s elongated posterior teeth needed to be intruded using skeletal anchorage, which also helped to level the canted occlusal plane. A reduction alveoloplasty was performed when the dental implants were placed. A crown lengthening procedure was performed for further intrusion after the elongated teeth had been embedded into the gingiva. Another crown lengthening procedure with labial bone reduction and recontouring was done in the maxillary anterior region to restore the appropriate crown length of maxillary anterior teeth and smooth labial bone after massive intrusion and retraction. The implant-supported prostheses were finished at an increased vertical dimension of occlusion with caution after adaptation and observation. This complex full-mouth rehabilitation improved function and esthetics with good stability thanks to collaboration among various specialties. (Am J Orthod Dentofacial Orthop Clin Companion 2023;3:268–82)


AJO-DO CLINICAL COMPANION

June 2023

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79 Reads

We appreciate your questions and feedback regarding our article (Liaw JJL, Park JH. Total arch distalization with extraalveolar miniscrews for nonextraction treatment of a patient with low-angle Class II Division 1 malocclusion: a 10-year follow-up. Am J Orthod Dentofacial Orthop Clini Companion 2023;3:43-54). We would like to address some of the points you raised:


A 3-dimensional evaluation of available retromolar space for the application of ramal plates

June 2023

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239 Reads

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3 Citations

American Journal of Orthodontics and Dentofacial Orthopedics

Introduction: This study aimed to evaluate the available retromolar space for ramal plates in patients with Class I and III malocclusions and compare that space with and without third molars using cone-beam computed tomography. Methods: Cone-beam computed tomography images of 30 patients (17 males, 13 females; mean age, 22.2 ± 4.5 years) with Class III malocclusion and 29 subjects (18 males, 11 females; mean age, 24.3 ± 3.7 years) with Class I malocclusion were analyzed. Available retromolar space at 4 axial levels of the second molar root and the volume of the retromolar bone were evaluated. Two-way repeated measures analysis of covariance (repeated measures analysis of covariance) was applied to compare the variables between Class I and III malocclusions and the presence of third molars. Results: Patients with Class I and III relationships showed up to 12.7 mm of available retromolar space at 2 mm apical from the cementoenamel junction (CEJ). At 8 mm apical from CEJ, patients with Class III malocclusion had 11.1 mm of space, whereas those with a Class I relationship showed 9.8 mm of available space. When patients had third molars, the amount of available retromolar space was significantly greater in patients with a Class I and III relationship. However, patients with Class III malocclusion exhibited greater available retromolar space than those with a Class I relationship (P = 0.028). In addition, the bone volume was significantly greater in patients with Class III malocclusion than in patients with a Class I relationship and those with third molars than in those without them (P <0.001). Conclusions: Class I and III groups showed the availability of at least 10.0 mm of retromolar space 2 mm apical to the CEJ for molar distalization. Based on this information, it is suggested that clinicians consider available retromolar space for molar distalization in diagnosing and planning treatment for patients with Class I and III malocclusion.


Citations (42)


... LLMs, renowned for their prowess in natural language processing, are now being explored for a variety of applications in the medical field, including but not limited to, simplifying radiology reports, writing medical records, predicting patient outcomes, and assisting in clinical decision-making (40)(41)(42). Currently, in the field of ophthalmology, the applications of LLM mainly include streamlining medical record documentation (43,44), identifying key risk factors (45), developing management recommendations (45,46), answering patient queries (47), and facilitating triage and appointment prioritization (48). For example, Huang et al. (49) compared the diagnostic accuracy and comprehensiveness of responses from GPT-4 with those of glaucoma and retina specialists on ophthalmological questions and real patient case management. ...

Reference:

Evolutionary patterns and research frontiers of artificial intelligence in age-related macular degeneration: a bibliometric analysis
Large language models and their impact in ophthalmology

The Lancet Digital Health

... Limitation of available phosphorus in soil necessitates regular supplement of chemical P fertilizer to plants which causes biological and environmental hazards like ground water contamination, eutrophication, hypoxia in aqua pools etc. Eco-friendly phosphate solubilizing microbes (PSM) would partially substitute chemical Pfertilizers through biogeochemical cycling of different insoluble P (IP) compounds and make available to rice and other plants [1]. The PSM mineralize IP compounds through acidification by organic/inorganic acid and phosphatase production, ion exchange reactions, chelation etc. Co-application of polyvalent PSM and rock phosphates in soil effected release of phosphorus, promotion of plant growth, improvement of soil texture, suppression of plant pathogens etc. and made it a promising, cheaper and ecofriendly growth promoter [2]. ...

Perspectives of Phosphate Solubilizing Microbes for Plant Growth Promotion, Especially Rice -A Review

... In the literature, most published case reports performed distalization in one arch, only few twoarch distalization cases are available. [9,10] e accuracy of bracket position has a major impact on the quality of lingual orthodontic treatment result. [11,12] At present, indirect lingual bracket placement is usually done manually through complicated laboratory procedures or digitally with closed source software and the laboratory fee is usually high. ...

Total arch distalization with extraalveolar miniscrews for nonextraction treatment of a patient with low-angle Class II Division 1 malocclusion: a 10-year follow-up
  • Citing Article
  • February 2023

... The winter months are defined as November, December, January, and February. In this study, we focused on winter P in the region (37)(38)(39)(40)(41)(42)(43)(44)(45)(46)(47)(48)(49)(50) • N, 110-130 • E), which is located in the northern EA and will be abbreviated as NEA hereafter. Additionally, we employed a covariance-matrix-based empirical orthogonal function (EOF) to identify the primary modes of winter P in NEA. ...

On the increasing fluctuations of midlatitude winter temperature 4 associated with the Arctic in the 1.5° and 2.0° warmer world 5 6 7
  • Citing Article
  • February 2023

npj Climate and Atmospheric Science

... Two hundred seventy-six records were carefully tested after duplicate records were removed. As a result, nineteen studies were included in the current systematic review [3,14,15,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. Figure 1 shows the PRISMA flow diagram of articles selection and the number of accepted and excluded articles. The hand-searching within the included studies did not add any new studies to the included list. ...

Treatment effects after maxillary total arch distalization using a modified C-palatal plate in patients with Class II malocclusion with sinus pneumatization
  • Citing Article
  • October 2022

... This is especially difficult to manage in Class II division 2 patients, who often present with significantly retroclined maxillary incisors. 1,2 In conventional edgewise mechanotherapy, rectangular archwires are required to control the torque with third-order bends through the interaction of the archwire and the bracket slots. 1,3 Because incisor torque control is even more challenging with aligners, nonextraction treatment approaches such as maxillary molar distalization are often considered instead of extractions. ...

Use of temporary skeletal anchorage devices for intrusive root movement of maxillary incisors in adult patients with Class II Division 2 malocclusion
  • Citing Article
  • April 2022

... As the distal segment setbacks along the occlusal plane, a vertical height difference between the lower borders of the proximal and distal segments of the mandible, known as the vertical bony step (VBS), occurs inevitably due to the divergence between the occlusal plane and mandibular plane. This VBS has been reported to be associated with relapse after mandibular BSSRO surgery [17,18]. ...

Vertical bony step between proximal and distal segments after mandibular setback is related with relapse: A cone-beam computed tomographic study
  • Citing Article
  • March 2022

American Journal of Orthodontics and Dentofacial Orthopedics

... Firstly, the zygomaticomaxillary sutures (Fig. 2j) were measured in coronal cross-section. Secondly, in axial cross-sections, the widths of the zygomaticotemporal sutures [15,17,22,23] ( Fig. 2k) were measured; thirdly, the widths of the pterygopalatine sutures (→) were measured at the level of the pyramidal process of the horizontal plate of the palatine bone and the medial plate of the pterygoid process. The location for measuring the pterygopalatine suture on the medial plate of the pterygoid process was chosen based on its relationship to the horizontal plate of the palatine bone at this level, as this anatomical structure is easily identifiable as a reference point. ...

Short-term effects of microimplant- assisted rapid palatal expansion on the circummaxillary sutures in skeletally mature patients: A cone-beam computed tomography study
  • Citing Article
  • December 2021

American Journal of Orthodontics and Dentofacial Orthopedics

... However, among the disadvantages of IBT, there are the difficulties of the inner technical procedures, which are related to the professional experience of the operator (including recording of alginate impressions and fabricating of dental casts and transfer trays). Moreover, IBT is associated with higher overall time and cost of laboratory procedures compared to the direct bonding technique [11,12]. ...

A completely digital indirect bonding technique using a customized virtual orthodontic bracket setup and 3-dimensional printing technology
  • Citing Article
  • October 2021