Dentures can fracture from a variety of causes, commonly through dropping onto a hard surface although other causes include failure of inherent defects from poor processing. Other factors predisposing complete dentures (CDs) to failure are a shallow palatal vault combined with severe flexure such as biting down onto a hard object or a deep incisal notch acting as a stress riser.

The commonest maxillary denture fractures occur at the midline from trauma (dropping) or arise from poor fit or occlusion problems. Although a repair can return the denture with a midline fracture to functionality, causative problems such as poor/>