Deep tooth decay treatment is performed when caries has progressed close to the dental pulp and may cause pain, sensitivity, or risk of infection. The procedure involves careful removal of decayed tissue while preserving the vitality of the pulp whenever possible.

Protective liners or therapeutic materials may be applied to shield the nerve, followed by restoration of the tooth with a suitable filling. In some cases, staged treatment may be required. Deep decay treatment helps relieve discomfort, prevent pulp damage, and maintain the natural tooth, supporting long-term dental health and function.