Cvek has shown that with pulp exposures:

A. It doesn't matter whether the exposure is traumatic or carious, the amount of pulp that is removed is the same.
B. In a traumatic injury, only a few millimeters of pulp tissue need to be removed, regardless of lapsed time or the size of the exposure.
C. The instrument of choice for tissue removal is a round carbide bur, using a high-speed handpiece and adequate water cooling.
D. The instrument of choice for tissue removal is a round carbide bur, using a slow-speed handpiece and progressing slowly, as to not remove unnecessary healthy pulp tissue.