Dental Caries With Pulp Exposure

Caries can progress from early enamel changes to a visible cavity. Bacterial by-products from caries can inflame the pulp, and bacteria can also reach it through a periodontal infection or a tooth fracture.

Early pulp inflammation may cause mild, intermittent pain with cold drinks and no spontaneous pain. Persistent inflammation can irreversibly damage the pulp and bring unprovoked pain, often worse overnight.

Frequent exposure to fermentable carbohydrates supports the cariogenic biofilm that causes mineral loss. Low fluoride exposure is also a contributing factor in dental caries.

A cavity may look brown-yellow and soft, or black and hard, and pulp exposure may be visible. Pain triggered by temperature, unprovoked pain, tooth discolouration and a palpable swelling help distinguish changes in pulp and surrounding tissues.

When pulp inflammation is reversible, treatment removes the carious tissue and places a restoration. Once persistent inflammation has irreversibly damaged the pulp, the tooth needs definitive treatment for the pulp condition.

The clinical work can change as caries moves from an early lesion to a cavity with pulp involvement: an initial lesion may be managed with remineralisation, while lost tooth structure needs filling and rebuilding.

Caries can progress to apical periodontitis, a periapical abscess, cellulitis, periostitis or osteomyelitis. Infection spreading through facial spaces can become serious.

Reducing frequent sugar exposure limits the acidic conditions that demineralise teeth. Fluoride helps prevent caries, and saliva can neutralise acids after sugars have cleared.