The full form of RDT in Dentistry is Remaining Dentin Thickness. This is also known as Residual Dentin Thickness. The remaining Dentin Thickness is the thickness of the health dentin between the roof of the floor chamber and the pulpal floor. Remaining Dentin Thickness is an important characteristic of the tooth as it provides a cushion to the pulp and protects the pump from inflammatory products as well as mechanical injuries.
Initially, the studies suggested that there should be a minimum of 2 mm of Remaining Dentin Thickness remaining to protect the pulp. At the same time, there were other researches stating 1 mm is also enough. However, the most recent studies suggest that even 0.5 mm of Remaining Dentin Thickness can protect the pump. This is an important derivation since the cavity and tooth decay can reduce the Remaining Dentin Thickness, and it can impact the tooth's pulp.
The other full forms of RDT are Rapid Diagnostic Tests, Rapidly Disintegrating Tablets, Regular Dialysis Treatment, Rising Dose Tolerance, Radial Diffusivity, Radiodynamic Therapy, Reciprocal of Doubling Time, Registered Dental Technician, Renal Denervation and Repeated-Dose Toxicity.