How can a cracked tooth be repaired?

If a tooth has a crack, the appropriate treatment depends on the location, depth, extent, and symptoms associated with the fracture. Superficial cracks—often called “craze lines”—affect only the enamel, are typically asymptomatic, and usually require no intervention beyond routine monitoring and good oral hygiene.

For cracks that extend into the dentin but remain above the gumline and do not involve the pulp, a conservative restoration such as a composite resin filling or a ceramic inlay/onlay may be sufficient to restore function and prevent further propagation of the crack.

When the crack involves the pulp (i.e., causes persistent pain, sensitivity to temperature or biting pressure, or shows signs of pulpal inflammation or necrosis), root canal treatment is generally indicated to remove infected or inflamed pulp tissue, followed by placement of a protective crown to reinforce the remaining tooth structure and minimize fracture risk.

In cases where the crack extends below the gumline (subgingival), particularly if it involves the root or compromises structural integrity significantly, the tooth may not be salvageable. Extraction may be necessary, followed by discussion of replacement options such as dental implants, bridges, or removable partial dentures.

It’s important to note that cracked teeth do not heal spontaneously, and early diagnosis and management are critical to preserving tooth vitality and function. Patients experiencing sharp pain upon biting, intermittent discomfort, or unexplained sensitivity should seek prompt evaluation by a dentist or endodontist for clinical examination, radiographic imaging (e.g., periapical radiographs or CBCT when indicated), and possibly transillumination or bite-testing to confirm the diagnosis.