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ISSN : 0376-4672
Peri-implantitis is a major threat to implant longevity, requiring timely diagnosis and effective treatment. This case report describes two clinical cases where quantitative light-induced fluorescence (QLF) was used to detect and evaluate peri-implant biofilm. The first involved a medically compromised patient treated non-surgically using ultrasonic scalers, NiTi brushes, and an air-powder abrasive device. The second case required surgical intervention with flap elevation and bone grafting. In both cases, QLF enabled real-time visualization of biofilm accumulation and removal. Fluorescence intensity markedly decreased after treatment, indicating improved im- plant surface cleanliness. QLF allowed detection of residual biofilm that was not easily identified through tradi- tional visual inspection, supporting more thorough decontamination. These findings suggest that QLF is a useful adjunctive tool for the diagnosis and evaluation of peri-implantitis. By enabling precise visualization of biofilm, QLF enhances conventional assessments and may contribute to better treatment outcomes and long-term implant maintenance. (J Korean Dent Assoc 2025; 63(6): 181-189)
Modern dental practice is expanding beyond the treatment of oral diseases to encompass both functional res- toration and esthetic enhancement. The clinical application of botulinum toxin is gaining attention not only for treating functional disorders such as temporomandibular disorders, bruxism, and masseteric hypertrophy, but also for improving esthetic concerns including facial asymmetry, perioral wrinkles, and smile lines. This study systematically reviews the functional and esthetic applications of Botox in dental practice and proposes clinical guidelines for safe and effective practice. Based on the anatomical understanding of facial musculature, key target areas, injection techniques, appropriate dosages, and strategies for minimizing complications are discussed. Ad- ditionally, legal and ethical considerations surrounding Botox use by dental practitioners in Korea are reviewed based on the latest court rulings. This research aims to provide dental clinicians with evidence-based insights for utilizing Botox safely and effectively, enhancing both patient functionality and satisfaction. (J Korean Dent Assoc 2025; 63(6): 190-196)
Several possible causes for the temporomandibular joint disorders have been proposed, but trauma to the jaw in- cluding macro and micro-trauma is the most common etiologic factor contributing to a change in biomechanics in the joint. Facial asymmetry is a factor of the force imbalance to the temporomandibular joint which can cause the temporomandiular joint disorders. It can be corrected by orthognatic surgery (2-jaw surgery) with orthodontic therapy to be a harmonic bite force transmission to the temporomandibular joint. And nonfunctional chewing force can be managed with a biofeedback device which is one of the behavior therapies. Biofeedback is a well- proved treatment method in rehabilitation therapy. In the temporomandibular joint disorders field, it can alert patients to their bruxing habits in real time and manage to stop the bruxism with stimulation to the patients. In this paper, we report on the 3 cases to discuss about the force management of the temporomandibular joint involved with facial asymmetry and sleep bruxism. (J Korean Dent Assoc 2025; 63(6): 197-206)
Intraoral vertical ramus osteotomy (IVRO) is a surgical procedure that can be used to move the distal segment of the mandible posteriorly for the treatment of mandibular prognathism. The mesial segment overlaps with distal segment laterally and goes through a healing process while cortical-to-cortical contact. Compared to sagittal split ramus osteotomy (SSRO), IVRO has the following advantages: the surgical procedure is simple, so there is a low possibility of unexpected fractures; the surgical time is short relatively; the possibility of inferior alveolar nerve damage is low; it has positive effect in treatment temporomandibular joint disease through the condylotomy ef- fect; and the anteroposterior stability is relatively favorable. (J Korean Dent Assoc 2025; 63(6): 207-215)
