Clinical Application of Pulp Tests - Dental pulp tests are valuable techniques used in dentistry to establish the pulpal health status of a tooth. - The diagnostic information obtained from pulpal testing is used alongside a patient's history, clinical and radiographic findings to determine a diagnosis and prognosis. - Pulp tests are useful for diagnosing endodontic pathology. - They can help localize tooth pain. - Pulp tests aid in differentiating between odontogenic and non-odontogenic pain.

Sensitivity Testing - Sensitivity tests assess the sensory response of a tooth to external stimuli. - Sensory stimuli like heat, cold, or electrical current are applied to the tooth to stimulate the nocireceptors within the pulp. - Sensibility testing is based on Brännström's hydrodynamic theory. - The type of sensory fibers activated determines the response felt by the patient. - Sensitivity testing can indirectly determine the pulpal health status.

Responses to Sensitivity Testing - A normal response to sensitivity testing indicates a healthy pulp. - A heightened or prolonged response suggests pulpal inflammation. - Pronounced pain that subsides indicates reversible pulpitis, while lingering pain indicates irreversible pulpitis. - Lack of response suggests diminished nerve supply, such as in pulpal necrosis or previously root-treated canals. - Sensitivity testing results require careful interpretation in clinical practice.

Types of Sensitivity Tests - Thermal tests involve applying hot or cold stimuli to the tooth. - Cold testing is commonly done using products with varying melting points, such as household ice or refrigerant sprays. - Heat tests use heated instruments or gutta-percha. - Electric pulp testing generates an action potential in the pulp's Type Aδ fibers using an electrical current. - Anaesthesia testing is used when other sensitivity tests are inconclusive.

Limitations of Sensitivity Testing - Sensitivity tests only indicate the presence or absence of the nerve supply to a tooth. - Prolonged response indicates pulpal inflammation but not its degree. - False positive results can occur due to innervation of adjacent teeth or in anxious patients. - False negative results can occur in recently traumatised teeth or teeth with incomplete root canal treatment. - Sensitivity test results should be interpreted by an experienced dentist considering clinical symptoms and radiography.