For periodontal ligament injections, the solution is placed ____________.
a. in the pulp of an open tooth
b. in the spongy bone
c. near the apex of the tooth
d. in the gingival sulcus
Question 2
In regard to the size of crystals in the emulsion, the larger the crystals, ____________.
a. the faster the film
b. the slower the film
c. there is no difference
d. it depends on the temperature of the developing solution