Fractographic Failure Analysis of a Broken Tooth Following Larnygoscopy
Janet Quinn, L W. Schultheis
ckground: A tooth broken subsequent to laryngoscopy was fractographically analyzed. The science of fractography involves examination of fracture surfaces to determine information such as failure causes, crack progressions, and stress configurations.Case description: Fractographic examination of a maxillary canine root fragment revealed step-wise crack progression, evidence of bruxism and the approximate location and direction of the applied critical force. A force applied to an available discarded tooth, coated and embedded to simulate in vivo conditions, supported the fractographic findings.Clinical Implications: This study shows that fractographic analysis can be successfully applied to human dentition, and uncovers bruxism as a potential significant factor in dental injury in intubated patients.
Journal of the American Dental Association
bruxism, fractography, intubation, tooth fracture
and Schultheis, L.
Fractographic Failure Analysis of a Broken Tooth Following Larnygoscopy, Journal of the American Dental Association
(Accessed June 7, 2023)