Publications by authors named "Gi-Woong Hong"

Nasolabial folds significantly impact facial appearance and are a common aesthetic concern. This article reviews anatomic considerations and filler injection techniques for treating these folds, with a focus on the Korean population. The dermal filler used in this study is Maili hyaluronic acid filler (Sinclair Pharma), derived from a novel proprietary manufacturing technology known as OxiFree™ technology (Kylane Laboratoires , Switzerland).

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This study focuses on anatomically based diagnosis and filler injection techniques for managing perioral wrinkles, which present unique challenges due to complex vascular anatomy and diverse wrinkle types. Key perioral wrinkles include vertical lip wrinkles (smoker's lines), oblique lip-chin creases, labiomental creases, central chin creases, and marionette lines. Effective treatment requires understanding the underlying anatomy and careful procedural planning.

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Background: Our understanding of facial anatomy has expanded recently through the introduction of the concept of facial biomechanics. A pivotal aspect in the concept of facial biomechanics is the presence of facial ligaments, which, by anchoring the layered soft tissue envelope of the face, create zones of adhesion that are essential pillars of the biomechanics of the face. This study analyzes the force required to penetrate the major facial ligaments forming the line of ligaments.

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Background: Thread lifting is a popular minimally invasive option for correcting submental fullness. Given the complex anatomy and multifactorial causes of double chin deformity, anatomical understanding is critical for safe and effective treatment. This study outlines key anatomical considerations and procedural strategies for optimal outcomes in double chin thread lifting.

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Background: The selection of dermal fillers in aesthetic medicine often relies on factors such as cost, immediate outcomes, and practitioner experience. However, incorporating knowledge of fillers' rheological properties, such as viscoelasticity and cohesiveness, allows for more precise product selection tailored to patient needs and treatment goals while reducing the risk of complications.

Aims: This review aims to summarize essential considerations for filler selection, focusing on rheological properties, safety profiles, and clinical applications.

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Lip augmentation has become increasingly popular in aesthetic medicine, driven by advancements in dermal filler technologies and injection techniques. This review provides a comprehensive overview of lip anatomy, age-related changes, and current best practices in lip augmentation using dermal fillers. The complex structure of the lips, including multiple layers of skin, muscle, and mucosa, contributes to their unique appearance and function.

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Supraorbital hollowness and pretarsal fullness, commonly known as the sunken eyelid and charming roll, respectively, are significant anatomical features that impact the aesthetic appearance of the periorbital region. Supraorbital hollowness is characterized by a recessed appearance of the upper eyelid, often attributed to genetic factors, aging, or surgical alterations, such as excessive fat removal during blepharoplasty. This condition is particularly prevalent among East Asians due to anatomical differences, such as weaker levator muscles and unique fat distribution patterns.

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Temporal hollowing is a common aesthetic concern addressed with filler injections using an anatomy-based approach. Understanding the complex anatomy of the temporal region, including the superficial temporal artery, temporal branch of the facial nerve, and sentinel vein, is essential for safe and effective treatment. Injection planes-subfascial, within the superficial temporal fat pad, or submuscular-are selected based on individual anatomy and desired outcomes.

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Infraorbital groove and hollowness are common aging-related anatomical changes in the periorbital region, leading to a sunken and tired appearance. These conditions are caused by the progressive loss of volume in the deep fat pads, including the sub-orbicularis oculi fat (SOOF) and malar fat, along with skin thinning and decreased elasticity. Filler injections, particularly hyaluronic acid-based fillers, are the preferred treatment to restore volume and smooth the under-eye area.

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This review presents a comprehensive analysis of mandible borderline lifting, a minimally invasive procedure designed to enhance jawline definition using barbed threads. The technique addresses age-related tissue laxity along the mandibular border by utilizing the anatomic structure of the platysma-auricular ligament as an anchor point. Recent changes in facial morphology among Korean populations, coupled with increased orthodontic interventions, have shifted esthetic focus from chin projection enhancement to overall jawline definition, similar to Western esthetic preferences.

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Nasal augmentation using dermal fillers has become a popular nonsurgical esthetic procedure, particularly among Asian populations. This review explores the anatomical considerations, injection techniques, and safety measures essential for successful outcomes. The complex nasal anatomy, comprising 5 distinct soft tissue layers and intricate vascular networks, necessitates a thorough understanding to minimize risks of complications such as skin necrosis and visual impairment.

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Purpose: Marionette lines, also known as static labiomandibular folds, are common age-related perioral wrinkles that impact facial aesthetics, particularly in Asian populations. This article aims to examine the anatomical basis, etiology, and filler injection techniques used for treating marionette lines.

Materials And Methods: The study reviews anatomical studies and clinical practices related to marionette lines.

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This review explores the anatomical considerations and technical aspects of thread lifting for the forehead and eyebrow, focusing on the relationships between vascular structures, muscular anatomy, and age-related changes in the forehead-eyebrow complex. It highlights the critical importance of understanding neurovascular pathways, particularly the supratrochlear and supraorbital vessels, as well as the appropriate thread placement techniques necessary for optimal outcomes. The review demonstrates that I-shaped threads, when placed beneath the frontalis muscle, provide a safer and equally effective alternative to traditional U-shaped designs.

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Facial thread lifting has emerged as a minimally invasive alternative to traditional face-lifting procedures, with particular emphasis on U-shaped and I-shaped barbed threads. This review analyzes the anatomical considerations, procedural techniques, and clinical outcomes of different thread types for facial rejuvenation. The study examines the mechanical principles and lifting mechanisms of U-shaped "suspension type" threads versus I-shaped threads, highlighting their distinct characteristics and applications.

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Background: Hyaluronic acid (HA) fillers are commonly used in esthetic medicine for facial contouring and rejuvenation. However, complications such as overcorrection, vascular occlusion, and irregular filler distribution necessitate the use of hyaluronidase to dissolve the fillers. This study aimed to evaluate the efficacy of hyaluronidase in degrading different types of HA fillers and provide clinical guidelines for its use based on filler type, dosage, and application techniques.

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Background: Nonsurgical rhinoplasty (NSR) with dermal fillers has gained popularity because of its immediate and visible results, minimal downtime, and long-lasting effects. However, complications such as filler migration can lead to the development of the "Avatar nose," a condition where the nose appears unnaturally wide and bulbous in the nasion area, disrupting facial harmony. This phenomenon is often exacerbated by the presence of a taut nasofrontal ligament, which tethers the periosteum to the dermal layer and influences nasal contour.

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Chin augmentation and jawline contouring have emerged as significant procedures in aesthetic medicine, addressing both structural and age-related changes in the lower face. This review explores anatomic-based diagnosis and filler injection techniques for these treatments. Ethnic variations in facial structure necessitate different approaches, with Western patients often seeking jawline definition, while Asian patients frequently require chin projection.

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This narrative review explores the various injection techniques utilized in facial filler procedures, emphasizing their applications, benefits, and potential complications. The increasing demand for total facial contouring and rejuvenation has led to a rise in the use of volumizing fillers and the integration of these procedures with other treatments such as toxins, threads, lasers, radiofrequency, and ultrasound. Achieving satisfactory results necessitates a comprehensive understanding of facial anatomy and the effects of aging on skin tissue.

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Background: Hollowness in the anteromedial, buccal, and lateral cheek regions is a common concern in aesthetic medicine, often resulting from age-related volume loss and structural changes. Advanced filler injection techniques that incorporate a thorough understanding of facial anatomy are critical for achieving optimal and safe outcomes.

Objective: To review and detail anatomically guided filler injection techniques for addressing hollowness in specific cheek regions, considering facial anatomy, ethnic variations, and patient-specific aesthetic goals.

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Glabellar filler injections are a popular non-surgical approach to address depressions and wrinkles caused by aging, muscle activity, and soft tissue loss. An anatomy-based technique emphasizes understanding the complex structure of the glabellar region, including the corrugator supercilii and procerus muscles, and the superficial vascular pathways, such as the supratrochlear and supraorbital arteries. Effective treatment involves precise filler placement, often combined with botulinum toxin to address both volume loss and dynamic wrinkles.

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Introduction: Non-surgical rhinoplasty has evolved with the introduction of volumizing threads, which offer a less invasive alternative to traditional methods by enhancing nasal contours while minimizing filler use. This technique is gaining popularity, particularly in Southeast Asia, due to its shorter recovery time, reduced risk profile, and ability to prevent the 'Avatar nose' effect. However, there is limited anatomical guidance available for its application, especially in the Asian population.

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Background: Hyaluronic acid (HA) fillers are widely used in aesthetic medicine, but their in vivo behavior and long-term effects are not fully understood.

Aims: To review the decomposition and changes occurring in the body following HA filler injections, focusing on crosslinking agents, degradation processes, and tissue responses.

Methods: This review analyzed oxidative and enzymatic degradation processes of HA fillers, evaluated the impact of 1,4-Butanediol Diglycidyl Ether (BDDE) crosslinking, and examined histological changes post-injection.

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Hyaluronic acid (HA) fillers are extensively utilized in aesthetic medicine due to their biocompatibility, reversibility, and effectiveness in enhancing skin hydration, volume, and overall appearance. These fillers are predominantly produced through microbial fermentation, followed by a critical cross-linking process that enhances their longevity by resisting enzymatic degradation. This review provides a thorough examination of the manufacturing processes that differentiate HA fillers, with particular attention to the distinctions between biphasic and monophasic variants.

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