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ISSN : 0376-4672
Purpose: This study evaluated the pathological effects of single posterior implant-supported fixed prostheses on adjacent and antagonistic teeth and investigated the influence of systemic diseases, occlusal conditions, implant site, and patient sex.Materials and Methods: A retrospective observational study was conducted on 100 patients who had received a single posterior implant and were followed for at least one year at Gangneung-Wonju National University Dental Hospital. Clinical and radiographic assessments compared adjacent and antagonistic teeth at the implant site (ex-perimental group) with the corresponding contralateral teeth (control group). Parameters included tooth cracks, cusp fractures, alveolar bone status, treatment history, and occlusal contact assessed using the Shimstock test. Associations with systemic diseases, occlusal contact, sex, and implant position were also analyzed. Statistical analysis was performed using the chi-square test with a significance level of 0.05. Results: The distal adjacent tooth at the implant site showed significantly higher mobility than the control group (p<0.05). In patients without unilateral mastication, periapical lesions in antagonistic teeth (p<0.05) and cracks in adjacent teeth (p<0.05) were more frequent. Diabetic patients demonstrated a significantly higher prevalence of alveolar bone loss and treatment history in both adjacent and antagonistic teeth (p<0.05). When no occlusal contact was present on the implant-antagonistic tooth, less alveolar bone loss was observed (p<0.05), whereas cusp fractures in adjacent teeth were more common. Male patients showed a higher frequency of cusp fractures and cracks in adjacent teeth (p<0.05). Conclusion: Single posterior implant-supported fixed prostheses can induce pathological changes in adjacent and antagonistic teeth. Implant treatment planning should consider systemic health, occlusal dynamics, sex-related differences, and long-term maintenance. (J Korean Dent Assoc 2025; 63(12): 381-390)
Purpose: This study examines age distributions of pediatric maxillofacial and nasal fractures and assess whether 1) open reduction method and fracture site in childhood predict craniofacial deformity in adulthood, and 2) age at nasal fracture in childhood predicts septoplasty/rhinoplasty after 16 years.Materials and Methods: We conducted a retrospective cohort study using de-identified, nationwide administrative claims from the Korean Health Insurance Review and Assessment Service (HIRA) covering January 2007 through March 2023. Patients under 16 years who had been assigned International Classification of Diseases, 10th Revi-sion (ICD-10) facial fracture codes were identified; outcomes included facial deformity codes after 16 years and septoplasty/rhinoplasty after 16 years; statistics included chi-square test, 3×2 χ², or Fisher’s exact tests.Results: Initial diagnosis occurred at median age 10 years for maxilla, 9 years for mandible, and 11 years for nasal fractures; first open reductions clustered at 13–14 years across sites. No significant association was found between open vs closed reduction or fracture site and adult mandibular/maxillary deformity, whereas nasal-fracture age groups differed in later septal surgery rates, with adolescence showing higher risk (p<0.05).Conclusion: Pediatric facial fractures and first open reductions concentrate around early–mid adolescence, open vs closed reduction and fracture site did not predict adult craniofacial deformity, and adolescent nasal fractures were strongly associated with septal surgery in adulthood, supporting targeted prevention and long-term follow-up in this age group. (J Korean Dent Assoc 2025; 63(12): 391-398)
Pre-eruptive intracoronal resorption (PEIR) is a non-carious radiolucent defect typically found within the den-tin of unerupted teeth. This report describes three pediatric cases involving PEIR in a mandibular second mo-lar, maxillary canine, and maxillary first premolar, each showing unique clinical and radiographic features. Treatment decisions were based on lesion size, pulpal proximity, eruption stage, and symptoms, and included surgical exposure, indirect or direct pulp capping with calcium silicate-based materials, and restoration using glass ionomer cement or composite resin. Follow-up periods ranging from several months to 10 years revealed stable outcomes without lesion progression, symptoms, or need for endodontic therapy. These cases highlight the importance of early radiographic detection, individualized management, and long-term monitoring. Clinicians should carefully assess panoramic radiographs in mixed dentition to identify PEIR, particularly in less commonly affected teeth, and tailor treatment according to lesion activity and anatomical considerations. (J Korean Dent Assoc 2025; 63(12): 399-405)
Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used for pain and inflammation control in dental practice, yet their gastrointestinal risks remain frequently underestimated, particularly in older adults. This report introduces two 80-year-old men with odontogenic infection, who had serious upper gastrointestinal bleeding (UGIB) as a result of abusing NSAIDs before hospitalization. Laboratory test and upper gastrointestinal endoscopy confirmed the UGIB in patients. They received fluid resuscitation and blood transfusion. Hemostasis was achieved through epinephrine injection and cauterization. Patients was kept nir per os, and continuous use of intravenous proton pump inhibitors (PPIs) was followed. These cases highlight the need for appropriate risk assessment and preventive strategies, such as concomitant use of PPIs or use of alternative analgesics, especially in older patients. (J Korean Dent Assoc 2025; 63(12): 406-412)
