Publications by authors named "Sangyoon Park"

Article Synopsis
  • The extraction of a submandibular-displaced mandibular third molar root is challenging for surgeons due to its closeness to important structures like the lingual nerve and sublingual artery.
  • Preoperative imaging helps locate the root, but real-time synchronization is tough because of the mandible's moving nature.
  • This study highlights the successful extraction of a residual root using a magnetic navigation system, resulting in a minimally invasive procedure with no complications or major issues reported postoperatively.
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  • The study compares the biomechanical stability of two magnesium alloys (WE43 and ZK60) with titanium (Ti-6Al-4 V) for use in LeFort I osteotomy, analyzing how different configurations respond under stress.
  • The results showed that magnesium screws had varying stress levels in bone compared to titanium, with ZK60 plates presenting lower fracture risk and better stability.
  • Despite promising stress distribution with magnesium alloys, the overall strength of the screws needs enhancement to be viable for bone fixation applications.
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  • Traditional cephalometric radiographs can result in errors because they represent 3D structures in a 2D format, while cone beam computed tomography (CBCT) offers clearer, distortion-free images.
  • This study compared artificial intelligence-enhanced low-dose CBCT images to traditional and standard CBCT cephalograms using a sample of 16 participants.
  • The results showed that while most measurements were comparable across the groups, low-dose CBCT demonstrates potential for efficient dentofacial analysis, indicating a need for more research into AI technologies in dental imaging.
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Purpose: To evaluate the efficacy and safety of docetaxel/cisplatin chemotherapy followed by pelvic radiation therapy after staging surgery in patients with high-risk endometrial cancer.

Methods And Materials: In this open-label, single-arm, phase 2 trial conducted at 2 South Korean centers, we enrolled patients with histologically confirmed endometrial cancer who had undergone staging surgery. Inclusion criteria were based on International Federation of Gynecology and Obstetrics (FIGO) Staging 2009: stage I patients with ≥2 risk factors (grade 3, positive lymphovascular invasion, more than half of myometrium invasion); stage IB and II patients with clear cell or serous adenocarcinoma; stage II patients post-type 1 hysterectomy; and patients at stage III.

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Background: Antibody-drug conjugates (ADC) have emerged as a highly promising systemic option in the treatment of recurrent ovarian cancer. The present study aimed to evaluate the treatment efficacy of folate receptor α (FRα)-targeting ADCs, associated treatment-related adverse events (TRAEs), and their impact on treatment safety.

Methods: We conducted an electronic search to identify prospective trials of single-agent ADCs targeting FRα and those combined with chemotherapy in recurrent ovarian cancer.

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  • The study focused on nausea and vomiting caused by niraparib maintenance therapy in patients with advanced ovarian cancer, aiming to identify patterns and risk factors.
  • Out of 53 patients, a significant number experienced nausea and vomiting, with peak symptoms occurring a few hours after medication, but these symptoms decreased over time.
  • Key risk factors for experiencing nausea and vomiting included having HRD-positive tumors and a history of chemotherapy-induced nausea, suggesting that preventive antiemetic treatment may be necessary.
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Background: Current treatment strategies for primary epithelial ovarian cancer (EOC) have significantly evolved, and the value of complete cytoreduction has not yet been reassessed. The study aimed to investigate the impact of residual disease after cytoreductive surgery for EOC on survival outcomes within the recent paradigm of frontline ovarian cancer treatment.

Methods: We searched relevant literature from the MEDLINE, Embase, and Cochrane Library databases to identify randomized controlled trials and prospective clinical trials of primary EOC published between 1 January 2000 and 22 September 2022.

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The somatic BRCA1 or BRCA2 Pathogenic Variant (PV)/Likely PV (LPV) from Next Generation Sequencing (NGS) is the most important biomarker for PARP inhibitor use and maintenance-targeted therapies. A discrepancy in the detection rates of BRCA1 and BRCA2 PV/LPV was identified among the NGS platforms. The objective of this study was to compare the somatic BRCA results from two distinct platforms using the same cohort and to identify the causes of these differences.

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  • This study aimed to evaluate the impact of starting niraparib maintenance therapy early (within 8 weeks post-chemotherapy) versus later in patients with newly diagnosed advanced ovarian cancer.
  • The research found that early initiation of niraparib was linked to significantly better progression-free survival, especially when started within 6 weeks after chemotherapy completion.
  • However, early treatment was also associated with a higher rate of adverse events leading to treatment discontinuation, suggesting a trade-off between benefits and risks.
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(BRG1) is a core unit of the SWI/SNF complex, regulating gene transcription through chromatin remodeling. Germline variants have been reported to be associated with various malignancies. Here, we report the first case of extraskeletal Ewing sarcoma in a young female patient with a germline pathogenic variant of (c.

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  • The study evaluated how reliable and consistent ChatGPT's responses are concerning hip fracture management guidelines from the AAOS.
  • Nineteen statements from the 2021 guidelines were used to generate questions, and outputs were analyzed over three different sessions.
  • While ChatGPT showed some potential in providing guidelines, its accuracy and precision were not very high, and it still has issues with generating false or misleading information.
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The objective of this study is to investigate the surgical, clinical and pathological outcomes of left hemi-hepatectomy during cytoreductive surgery (CRS) in patients with primary ovarian cancer. The electronic medical charts of patients with primary ovarian cancer who received CRS including left hemi-hepatectomy from 2000 to 2023 were reviewed and retrospectively analyzed. A total of 17 patients underwent left hemi-hepatectomy for resection of a deep peritoneal implant in the round ligament of the liver during primary CRS.

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  • The study addresses the challenges of placing dental implants correctly due to different shapes of the mandible, which can lead to complications like lingual perforations.
  • By analyzing 96 cone-beam CT images, researchers classified mandibular shapes into U, C, and P types, finding that U-shaped mandibles are the most prone to perforations.
  • The results showed U, P, and C shapes appear in 34.6%, 28.9%, and 36.5% of cases respectively, with significant differences in shape related to gender, age, and tooth type, highlighting the importance of understanding these anatomical variations for safer dental procedures.
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  • This study examined the frequency of hidden cancers and outcomes for women who had risk-reducing salpingo-oophorectomy (RRSO) due to gene mutations linked to breast and ovarian cancer.
  • Of the 255 women analyzed, about half had pathogenic variants in specific cancer-related genes, with a small percentage (3.5%) found to have occult cancers during surgery.
  • Despite no visible signs of disease at the time of surgery, one patient developed another cancer later, highlighting the importance of ongoing monitoring for these women even after surgery.
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Background: This multicenter retrospective study aimed to investigate the prognostic value of the CA-125 elimination rate constant K (KELIM) in EOC patients who received platinum-based chemotherapy followed by PARP inhibitors, in either upfront or interval treatment settings.

Methods: Between July 2019 and November 2022, we identified stage III-IV EOC patients who underwent primary or interval cytoreductive surgery and received olaparib or niraparib. Individual KELIM values were assessed based on validated kinetics and classified into favorable and unfavorable cohorts.

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  • The study examines the effectiveness of patient-specific plates created through digital technology versus conventional titanium plates in treating mandibular fractures.
  • Twenty patients were divided into two groups, with one receiving the patient-specific plates and the other receiving titanium plates, and various clinical outcomes were evaluated.
  • Results indicated that while most outcomes were similar between the two groups, the patient-specific plates significantly improved occlusal force, suggesting they are beneficial and advantageous for less experienced surgeons.
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Background: The combination of immune checkpoint inhibitors (ICIs) and platinum-based chemotherapy has emerged as a highly promising primary option for advanced or recurrent endometrial cancer (EC). The study aimed to evaluate treatment efficacy of ICIs with cytotoxic chemotherapy in EC.

Methods: We conducted a comprehensive review of randomized controlled trials up to November 11, 2023, focusing on immunotherapy combined with chemotherapy versus chemotherapy alone for EC.

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Objectives: Orthognathic surgery (OS) has evolved with technological advancements, notably through the implementation of computer-assisted orthognathic surgery (CAOS). This article aims to elucidate various types of CAOS and their efficiency and accuracy, supplemented by a thorough literature review focusing on their clinical applications in South Korea.

Study Selection, Data, And Sources: A comprehensive search strategy was employed, including systematic reviews, meta-analyses, randomized controlled trials, and observational studies published until December 2023 in the PubMed, MEDLINE, and Google Scholar databases.

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Objectives: Temporomandibular disorder (TMD) is a common condition that affects the temporomandibular joint (TMJ) and the muscles of the jaw, resulting in pain and dysfunction. TMD is affected by both behavioral and psychological factors. Digital therapeutics (DTx) can exert therapeutic effects by controlling behavioral factors through the delivery of appropriate interventions.

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With the growing demand for orthognathic surgery and other facial treatments, the accurate identification of anatomical landmarks has become crucial. Recent advancements have shifted towards using three-dimensional radiologic analysis instead of traditional two-dimensional methods, as it allows for more precise treatment planning, primarily relying on direct identification by clinicians. However, manual tracing can be time-consuming, mainly when dealing with a large number of patients.

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The latest advances in mobile platforms, such as robots, have enabled the automatic acquisition of full coverage point cloud data from large areas with terrestrial laser scanning. Despite this progress, the crucial post-processing step of registration, which aligns raw point cloud data from separate local coordinate systems into a unified coordinate system, still relies on manual intervention. To address this practical issue, this study presents an automated point cloud registration approach optimized for a stop-and-go scanning system based on a quadruped walking robot.

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Article Synopsis
  • This study compared the effectiveness and safety of two PARP inhibitors, olaparib and niraparib, in patients with advanced ovarian cancer who have BRCA mutations and responded to platinum-based chemotherapy.
  • A total of 80 patients treated with olaparib and 31 with niraparib were matched to analyze progression-free survival, time to subsequent therapy, overall survival, and adverse events.
  • Findings showed no significant difference in overall survival between the two treatments, emphasizing the importance of considering side effects when choosing which PARP inhibitor to use.
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To investigate the outcomes of children, adolescents, and young adults (AYAs) with malignant ovarian germ cell tumors (MOGCTs), we analyzed the data of 61 patients aged ≤39 years diagnosed with MOGCT between 2006 and 2022. Among 59 patients who received chemotherapy after initial diagnosis, 57 received BEP (standard dose of bleomycin with 30 units per week, = 13) or bEP (reduced dose of bleomycin with 15 units/m on day 1, = 44). The 5-year overall survival (OS) and event-free survival (EFS) rates were 98.

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Objective: To investigate the prognostic value of cancer antigen 125 (CA125) related variables on progression free survival and overall survival in primary and recurrent ovarian cancers.

Method: A comprehensive review of the Medline, Embase, and Cochrane Library databases was conducted to identify relevant literature on survival outcomes according to the ELIMination Rate Constant K (KELIM), Gynecologic Cancer InterGroup (GCIG) CA125 response criteria, CA125 half-life, and CA125 nadir levels during first line or later line chemotherapy. The search included articles published before February 2023.

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Machine learning approaches using satellite imagery are providing accessible ways to infer socioeconomic measures without visiting a region. However, many algorithms require integration of ground-truth data, while regional data are scarce or even absent in many countries. Here we present our human-machine collaborative model which predicts grid-level economic development using publicly available satellite imagery and lightweight subjective ranking annotation without any ground data.

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