1.Efficacy of Submucosal Polydeoxyribonucleotide Injection after Impacted Mandibular Third Molar Extraction: A Randomized Controlled Trial
Hyun Joong KIM ; Seo Yeon PARK ; Hyungjin KWON ; Yiqin FANG ; Youngmin KWON ; Chunui LEE
Yonsei Medical Journal 2026;67(1):79-86
Purpose:
This study aimed to evaluate the efficacy of polydeoxyribonucleotide (PDRN) injection after impacted mandibular third molar (IMTM) extraction. The primary outcome was postoperative pain, while secondary outcomes included postoperative swelling, periodontal pocket depth, and patient-reported outcome.
Materials and Methods:
Thirty medically uncompromised patients who underwent bilateral extraction of IMTMs were enrolled in the clinical study. PDRN was randomly injected on the experimental side, while normal saline was injected on the control side.Postoperative pain was assessed using a visual analog scale. Postoperative swelling was evaluated via linear measurements based on the Laskin method. Furthermore, three-dimensional volumetric analysis was conducted by superimposing serial facial scans obtained at baseline (preoperatively) and on postoperative days 3 and 7. Pocket probing depth was evaluated using a periodontal probe. Patients’ postoperative morbidity and subjective perceptions were evaluated using the patient-centered outcome questionnaire. Statistical software was used to evaluate the data, and p<0.05 was considered statistically significant.
Results:
Patients demonstrated statistically meaningful reductions in postoperative pain, swelling, and discomfort on the experimental side.
Conclusion
The results suggest that PDRN injection can be a suitable option to mitigate postoperative complications after IMTM extraction. However, further randomized controlled trials are required to confirm the reliability of the study and verify its suitability.
2.Clinical Characteristics of Status Epilepticus as the First Presentation of Fever Related Seizure in Children.
Hyungjin KIM ; Jisun PARK ; Ben KANG ; Youngse KWON
Journal of the Korean Child Neurology Society 2017;25(2):82-88
PURPOSE: Status epilepticus (SE) is a neurological emergency disease because it can cause severe neurological complications. In order to avoid these complications, early diagnosis and appropriate treatment is required in SE. Febrile SE is the most common form of SE in children. We investigated the clinical characteristics and prognosis of patients with febrile SE is the first seizure of life. METHODS: We retrospectively reviewed the medical records of patients with SE as the first presentation of fever related seizures who visited our hospital from July 1996 to January 2013. Clinicodemographic characteristics, brain magnetic resonance imaging (MRI) and electro-encephalogram (EEG) findings, and anti-epileptic treatment were compared between two groups divided according to prognosis; fair vs. poor prognosis. RESULTS: Seventy-eight children were included in this study. The median age of the subjects was 20.0 months (interquartile range [IQR] 12.0–42.8). Fifty-one subjects had a fair prognosis, while twenty-seven subjects had a poor prognosis. Statistically significant differences was observed in the duration of seizure (P=0.043), the number of antiepileptic drugs (P<0.001) and the presence of abnormal EEG findings (P<0.001). CONCLUSION: Children with febrile SE as the first seizure of life are likely to reveal a poor prognosis in those whose seizure last longer or are controlled only through high step anti-epileptic drugs. Thus, in order to ensuring a better prognosis for such patients, appropriate treatment is needed to stop the seizure.
Anticonvulsants
;
Brain
;
Child*
;
Early Diagnosis
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Electroencephalography
;
Emergencies
;
Epidemiologic Study Characteristics as Topic
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Fever*
;
Humans
;
Magnetic Resonance Imaging
;
Medical Records
;
Prognosis
;
Retrospective Studies
;
Seizures*
;
Status Epilepticus*

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