Detection of Artificial Tooth Cracks based on Optical Coherence Tomography

Due to the hidden symptoms of the tooth cracks, the existing imaging technologies have problems of insufficient resolution and inaccurate detection. In this paper, a swept-source OCT system is designed, which is suitable for the full crown scanning of different kinds of teeth. And the artificial tooth-cracked model is prepared by the temperature difference method, the tooth cracks tomographic images of incisors, premolars and molars under different preparation conditions were obtained by the swept-source OCT. The experimental results show that the swept-source OCT system can image different grades of tooth cracks and monitor the progress of cracks. At the same time, it is verified that the different grades of tooth cracks can be obtained by changing the cold treatment time and number of preparation cycles, which is of great significance for the clinical diagnosis and treatment of tooth cracks.