Background: The aim of this study was to evaluate the success of the artificial intelligence (AI) system in implant planning using three-dimensional cone-beam computed tomography (CBCT) images.Methods: Seventy-five CBCT images were included in this study. In these images, bone height and thickness in 508 regions where implants were required were measured by a human observer with manual segmentation method using InvivoDental 6.0 (Anatomage Inc. San Jose, CA, USA). Also, canals/sinuses/fossae associated with alveolar bones and missing tooth regions were detected. After all of this evaluations were repeated using the deep convolutional neural network (Diagnocat, Inc.) The jaws were separated as mandible/maxilla and each jaw was grouped as anterior/premolar/molar teeth region. The data obtained from manual segmentation and AI methods were compared using Bland-Altman analysis and Wilcoxon signed rank test.Results: In the bone height measurements, there were no statistically significant differences between AI and manual measurements in the premolar region of mandible and the premolar and molar regions of the maxilla (p>0.05). In the bone thickness measurements, there were statistically significant differences between AI and manual measurements in all regions of maxilla and mandible (p<0.001). Also, the percentage of right detection was 72.2% for canals, 66.4% for sinuses/fossae and 95.3% for missing tooth regions.Conclusions: Development of AI systems and their using in future for implant planning will both facilitate the work of physicians and will be a support mechanism in implantology practice to physicians.

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Introduction: This study aimed to investigate sleep and awake bruxism habit experienced by people who quarantined different places during the COVID-19 pandemic in the TRNC. Material and Methods A 25-question self-reported questionnaire was sent to the patients' mobile phones to measure their demographic information, the level of bruxism habits which they experienced before and during their quarantine period while sleeping and awake, and asked to answer. The answers were evaluated statistically by percentage and chi-square test. Results 241 people participated in our research. During the quarantine period, there was an increase in awake bruxism and a slight decrease in sleep bruxism. While the feelings worried, scared, panic and hopelessness felt by the participants in the first days of the quarantine decreased in the last days of the quarantine but calm was increased regardless of the place and length of stay in the quarantine. Teeth clenching, teeth grinding and earache were mostly seen in those who stayed in dormitory quarantine. Conclusion People's anxiety is increasing in the COVID-19 pandemic and there is a positive correlation between anxiety and both sleep and awake bruxism. Dentists should pay more attention to the signs of bruxism during the examination, especially from people who say that they are in quarantine during the anamnesis. Although the reason for the patient's visit to the doctor may seem like just a simple toothache, the underlying factors such as clenching should not be forgotten with a holistic approach and awareness should be created for the patient.