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 It is a contraindication to use nitrous oxide on a patient with cystic fibrosis.

Which of the following does not contraindicate the use of N2O-O2 sedation?

All patients diagnosed with periodontal disease need to be assigned a stage and grade. As noted above, Susan M. was staged as having stage III periodontal disease. Based on the information provided above, what would be the most appropriate grade you would add to her periodontal diagnosis?

It is not necessary to aspirate on the infiltration injection.

Which injection deposits anesthetic just superior to the mandibular foramen?

Which of the following conditions does not contraindicate the administration of N2O?

The pre-sedation preparation phase of sedation begins with establishing tidal volume and administering 100% oxygen for 2 minutes.

Which of the following are routes of delivery of dental local anesthetic drugs?  Choose all that apply.

The red dot at the border of the incisive foramen shows the deposition site for which injection?

Which of the following are part of the safety mechanism of the nitrous oxide delivery system.  Choose all that apply.