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DANB's CPFDA (CPFDA) Practice Tests & Test Prep by Exam Edge - Topics

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Understanding what is on the DANB's CPFDA exam is crucial step in preparing for the exam. You will need to have an understanding of the testing domain (topics covered) to be sure you are studying the correct information.

  • Directs your study efforts toward the most relevant areas.
  • Ensures efficient and adequate preparation.
  • Helps identify strengths and weaknesses.
  • Allows for a focused approach to address gaps in understanding.
  • Aligns your preparation with the exam's expectations.
  • Increases the likelihood of success.
  • Keeps you informed about your field's current demands and standards.
There is no doubt that this is a strategic step in achieving certification and advancing your career.

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Understanding the exact breakdown of the DANB's Certified Preventive Functions Dental Assistant test will help you know what to expect and how to most effectively prepare. The DANB's Certified Preventive Functions Dental Assistant has multiple-choice questions The exam will be broken down into the sections below:

DANB's Certified Preventive Functions Dental Assistant Exam Blueprint
Domain Name % Number of
Coronal Polish
     Dental And Oral Anatomy 8% 2
     Oral Prophylaxis 7% 2
     Objective Of Coronal Polish 7% 2
     Dental Deposits 15% 4
     Polishing Precautions 15% 4
     Patient Education And Recordkeeping 10% 3
     Abrasives And Polishing Agents 8% 2
     Polishing Technique 20% 5
     Infection Control/OSHA Protocol 10% 3
     Purpose Of Sealants 10% 3
     Indications And Contraindications For Sealant Application 40% 10
     Acid Etching 10% 3
     Sealants 40% 10
Topical Anesthetic
     Patient Preparation 10% 3
     Classifications 20% 5
     Precautions And Contraindications 20% 5
     Indications For Use 30% 8
     Placement Of The Topical Anesthetic (including Infection Control/OSHA Protocol 20% 5
Topical Fluoride
     Basic Information About Fluoride 10% 3
     Indications And Contraindications For Topical Fluoride 30% 8
     Benefits Of Topical Fluoride 15% 4
     Topical Fluoride Application 15% 4
     Fluoride Preparations 10% 3
     Adverse Reactions 10% 3
     Patient Education 10% 3

DANB's Certified Preventive Functions Dental Assistant - Exam Topics Sample Questions

What is dental plaque’s consistency?

Correct Answer:
sticky and soft white mass. 
dental plaque is a biofilm or mass that forms on the teeth when bacteria bind together and adhere to the dental surfaces. it is primarily composed of bacteria along with saliva and remnants of food particles. dental plaque is significant because it is a major cause of dental health issues such as tooth decay (cavities) and gum disease (gingivitis).

the consistency of dental plaque is sticky and soft. this sticky nature allows the plaque to cling to the surfaces of the teeth, especially around the gum line and in between teeth where it is harder to clean effectively with regular brushing. the soft texture of the plaque makes it pliable and easy to spread across the tooth surfaces. initially, plaque is colorless or slightly white, which makes it difficult to see without proper dental examination.

over time, if plaque is not removed regularly through brushing and flossing, it can harden into tartar (also known as calculus), which is much tougher and adheres strongly to the teeth. tartar requires professional dental cleaning to remove. the presence of plaque and its progression to tartar are harmful because they harbor bacteria that produce acids from sugar intake, leading to tooth enamel erosion and cavity formation.

the white color of plaque is due to the composition of the biofilm, which includes bacteria, food particles, and other dental debris. while plaque itself is typically white or slightly yellow, neglecting oral hygiene can lead to stained plaque, which can appear yellow, brown, or even green depending on the type of food consumed and exposure to substances like tobacco.

effective oral hygiene practices, including brushing twice a day with fluoride toothpaste, flossing daily, and regular dental check-ups, are crucial in controlling the formation of dental plaque and preventing the associated dental diseases. the understanding of dental plaque's consistency and color helps in recognizing the importance of maintaining good dental hygiene and the need for regular professional cleanings to manage plaque build-up effectively.

What is the purpose of selective polishing?

Correct Answer:
preserve enamel.

the primary purpose of selective polishing in dental care is to preserve tooth enamel while still ensuring that the teeth are clean and aesthetically pleasing. selective polishing is a procedure that targets only those teeth or areas of teeth that have stains, avoiding unnecessary polishing of all teeth.

this approach is advantageous because every act of polishing, regardless of the material used, can remove a small amount of enamel from the tooth surface. enamel is the hard, outer layer of the teeth that protects against tooth decay; once it is worn away, it cannot regenerate. therefore, minimizing the removal of enamel is crucial for long-term dental health. by only polishing teeth with visible stains, dental professionals can reduce the wear on healthy enamel while still removing unsightly stains, thus balancing aesthetic considerations with health preservation.

the selective polishing procedure involves the dental professional assessing each tooth to determine if polishing is necessary. only those teeth with extrinsic stains (stains on the surface of the teeth caused by coffee, tea, tobacco, or other staining agents) are polished. this is in contrast to traditional polishing, where all teeth are polished regardless of their condition. this selective approach not only preserves enamel but also reduces the time spent on the polishing procedure, making it more efficient.

while selective polishing is primarily focused on preserving enamel, it's worth noting that this procedure does not remove calculus (tartar), which is a hardened form of dental plaque. calculus removal requires a different dental procedure known as scaling, which is performed using different instruments and techniques. hence, selective polishing should not be confused with procedures aimed at removing calculus or controlling infections, although maintaining overall oral hygiene can contribute indirectly to these goals by promoting a cleaner oral environment.

in summary, selective polishing is a refined approach to dental cleaning that prioritizes the preservation of enamel by only polishing stained areas. this technique not only maintains the structural integrity and health of the teeth but also addresses aesthetic concerns in a targeted manner.