Interpretation of pulp sensibility tests - A review

Diagnosis can be defined as the art of distinguishing one disease from another. One of the most essential part of the diagnostic procedure for pulp disease is the use of pulp sensibility tests. When diagnosing pulp pain, these tests can be used to reproduce the symptoms reported by the patient to diagnose the diseased tooth as well as the disease state. There are several pulp sensibility tests available such as thermal tests (heat and cold stimuli), electric pulp tests (EPT), and a test cavity. But which test should be used in which condition still remains a confusion for the dentist. How to cite this article Kanav J, Ashwini J, Shivamurthy GB. Interpretation of pulp sensibility tests – A review. CODS J Dent 2014;6;108-111

Ultra-Gradient Test Cavity for Testing SRF Wafer Samples

A 1.3 GHz test cavity has been designed to test wafer samples of superconducting materials. This mushroom shaped cavity, operating in TE01mode, creates a unique distribution of surface fields. The surface magnetic field on the sample wafer is 3.75 times greater than elsewhere on the Niobium cavity surface. This field design is made possible through dielectrically loading the cavity by locating a hemisphere of ultra-pure sapphire just above the sample wafer. The sapphire pulls the fields away from the walls so the maximum field the Nb surface sees is 25% of the surface field on the sample. In this manner, it should be possible to drive the sample wafer well beyond the BCS limit for Niobium while still maintaining a respectable Q. The sapphire's purity must be tested for its loss tangent and dielectric constant to finalize the design of the mushroom test cavity. A sapphire loaded CEBAF cavity has been constructed and tested. The results on the dielectric constant and loss tangent will be presented.