Question 15 of 20

Click on the correct answer to the following question:

The periodontal ligament injection (PDL) is contraindicated for deciduous teeth because:

  1. the injection technique is too painful for children
  2. innervation of the deciduous teeth is unpredictable, therefore the PDL injection is unreliable
  3. it can cause enamel hypoplasia in the permanent tooth that is developing just beneath the deciduous tooth
  4. the decreased density of the bone surrounding deciduous teeth will not allow diffusion of the anesthetic solution