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    A Deep Learning-Based Approach to Detect Lamina Dura Loss on Periapical Radiographs
    (Springer, 2025) Sahin, Busra; Eninanc, Ilknur
    This study aimed to develop a custom artificial intelligence (AI) model for detecting lamina dura (LD) loss around the roots of anterior and posterior teeth on intraoral periapical radiographs. A total of 701 periapical radiographs of the anterior and posterior regions retrieved from the Dentomaxillofacial Radiology archives were reviewed. Images were cropped to include only the teeth exhibiting LD loss and those without LD loss, which were labeled as 1 and 0, respectively. The dataset was diversified using image preprocessing and data augmentation techniques. Among the radiographs, 72% were used for training, 18% for validation, and 10% for testing. A custom AI model, consisting of 4 blocks and 49 layers, with a total of 21.2 million parameters, was developed using the TensorFlow library and residual blocks introduced in ResNet architecture. Sensitivity, specificity, accuracy, precision, F1 score, and kappa (kappa) coefficients (for intra-observer agreement) were calculated to evaluate the performance of the AI model. When applied to a test set of 71 images, the AI model showed good performance in detecting LD loss, achieving an average sensitivity of 0.730, specificity of 0.706, accuracy of 0.718, precision of 0.730, and an F1 score of 0.730, regardless of the dental region. This study represents the first known application of an AI algorithm tailored to detect LD loss on periapical radiographs. The developed AI model could aid clinicians in making accurate diagnosis and help prevent misdiagnosis.
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    Ramsay Hunt Syndrome with Oral Findings: A Rare Case
    (Univ Indonesia, Fac Dentistry, 2023) Eninanc, Ilknur; Sahin, Busra
    Ramsay Hunt syndrome (RHS) is a disease that is caused by the varicella-zoster virus and is characterized by severe ear pain, auricular vesicular eruptions, and peripheral facial paralysis. Objective: The aim of this case report is to provide information about the clinical findings and treatment process of RHS, which is a rare case and may have oral findings and stress the importance of early diagnosis. Case Report: A 60-year-old male patient had previously consulted an otolaryngologist and a family physician with complaints of vesicular eruptions in the right ear auricle and on the mandible. The patient in whom a diagnosis could not be established presented to the Department of Oral and Maxillofacial Radiology after exacerbated lesions. White plaque-like and ruptured vesicular lesions were observed in the intraoral examination. All vesicular lesions were on one side of the face, and the patient was referred to the dermatology clinic with the diagnosis of RHS. Facial paralysis fully recovered in a short time after early diagnosis and treatment. It should be kept in mind that there may also be oral findings in RHS, and a patient's intraoral and extraoral examination findings should be evaluated together. Conclusion: Early diagnosis and treatment are highly important in preventing complications such as permanent facial paralysis, vestibulocochlear dysfunction, and hearing loss