DANB CPFDA case studies
DANB CPFDA · Put your knowledge to work in context.
The DANB Certified Preventive Functions Dental Assistant (CPFDA) is a DANB credential for dental assistants who perform preventive duties - sealants, coronal polishing, topical anesthesia and fluoride application - under the infection-control and safety standards that frame every one of those procedures. This page is an independent study resource built for candidates searching for a clear, current path through that material. The DANB CPFDA case studies are 5 cases and about 3,465 words.
1Sealing a Partially Erupted First Molar in a Child With a Strong Gag Reflex
A 6-year-old boy attends a six-month recall. His mandibular left first permanent molar, tooth #19, has erupted only far enough for the mesial half of the occlusal surface to be visible; a flap of gingiva still covers the distal portion.
788 words, about 4 min2Selective Polishing in a Patient With Veneers, Recession, and Chlorhexidine Stain
A 58-year-old woman arrives for her routine prophylaxis. Six months of chlorhexidine rinse, prescribed during periodontal therapy, have left a light brown extrinsic stain across her maxillary anterior facial surfaces.
588 words, about 3 min3Topical Anesthetic for a 4-Year-Old With a Prior Reaction to Benzocaine Teething Gel
A 4-year-old girl weighing 16 kg is scheduled for a pulpotomy on tooth #B and will need a maxillary infiltration. At check-in her mother reports that at 18 months the child had benzocaine teething gel applied and within minutes became gray around the lips and very sleepy; she was taken to the emergency department and recovered without treatment.
750 words, about 4 min4Choosing a Professional Fluoride Agent for an Orthodontic Patient With a Rosin Reaction
A 14-year-old boy with full fixed orthodontic appliances attends a six-month recall. You can see 11 white-spot lesions around the brackets, and since his last bitewings he has two new interproximal radiolucencies.
560 words, about 3 min5A Positive Biological Indicator and a Needlestick in the Same Morning
On Monday morning you open the sterilization log and see that the biological indicator from Friday's last cycle in the office's only autoclave has come back positive. That load contained the surgical cassettes used for three patients on Friday afternoon, including a set of extraction forceps, and the chamber had been loaded slightly overfull.
779 words, about 4 min