Question: Is a cracked denture still safe to wear?
Explanation: A cracked denture has a fracture line but remains in one piece. It is on the verge of complete failure. The crack propagates with every chewing cycle. Continuing to wear it risks a sudden break, which can cut the mucosa or produce a fragment that is swallowed or inhaled. A crack almost always indicates that the denture no longer fits the underlying ridge, so it flexes under load. Repairing the crack without relining the denture simply returns it to the same stress state, and it cracks again.
Related Questions:
Can a cracked denture be repaired, or does it need replacing?
A crack can be repaired by the laboratory, but the fit must be reassessed. If the ridge has resorbed, a reline or a new denture is needed. Repairing a poorly fitting denture is a short-term fix that usually fails within months.
How does a poor fit cause cracks?
An ill-fitting denture rocks on the ridge, concentrating bending stress along the midline of the palate or at a notch around a natural tooth. Acrylic fatigues under repeated flexure, and a crack initiates at the point of maximum stress. It then grows with each meal.
Should I keep wearing a cracked denture until my appointment?
Preferably not, especially for eating. If you must wear it for appearance, avoid chewing on it and eat soft foods. A denture that snaps mid-meal produces sharp edges. Contact your dentist for an early appointment rather than waiting.
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