Tooth function - 3D modeling and analysis

Objectives: Teeth are composed of different components that together enable the tooth to endure high and prolonged mastication loads. Mechanical and functional properties of the different components are thoroughly investigated, but the whole tooth function in the mastication process is still enigmatic. Methods: Using high resolution microCT scanning combined with a specially designed loading system enabled a 3D investigation of rat multi-rooted molar tooth movement during mastication process. Results: A direct contact between the jaw bone and the residing tooth was observed at constant points during tooth loading. These direct contact areas produce a unique trajectory of the tooth inside the alveolar bone. Conclusions: The tooth's trajectory induces repetitive loads on restricted areas both in the tooth and supporting tissues. This fact is of a major importance when analyzing functional and pathological processes.