EFDA EFDA Periodontal Procedures & Oral Health 2 — Questions and Answers
Question 1: An EFDA performing coronal polishing should avoid polishing which of the following surfaces?
- Facial enamel
- Lingual enamel
- Exposed cementum or dentin (Correct answer)
- Buccal cusps
Correct answer: Exposed cementum or dentin
Exposed cementum and dentin are softer than enamel and can be easily abraded by prophy paste, causing sensitivity.
Question 2: Which classification of furcation involvement indicates that the probe can enter the furcation but not pass through?
- Class I
- Class II (Correct answer)
- Class III
- Class IV
Correct answer: Class II
Class II furcation involvement means the probe penetrates into the furcation but cannot pass completely through to the other side.
Question 3: What oral hygiene aid is most effective for cleaning interproximal areas between teeth?
- Tongue scraper
- Dental floss (Correct answer)
- Toothbrush
- Mouth rinse
Correct answer: Dental floss
Dental floss is specifically designed to remove plaque and debris from the interproximal surfaces that a toothbrush cannot reach.
Question 4: Which bacteria is considered a major pathogen in aggressive periodontitis?
- Streptococcus mutans
- Aggregatibacter actinomycetemcomitans (Correct answer)
- Lactobacillus acidophilus
- Fusobacterium nucleatum
Correct answer: Aggregatibacter actinomycetemcomitans
Aggregatibacter actinomycetemcomitans (Aa) is strongly associated with aggressive (formerly juvenile) periodontitis.
Question 5: What is the purpose of an oral irrigation device (water flosser) in home care?
- Remove calculus
- Replace brushing
- Flush debris and reduce bacterial load subgingivally (Correct answer)
- Whiten teeth
Correct answer: Flush debris and reduce bacterial load subgingivally
Oral irrigators flush food debris and reduce the bacterial load in periodontal pockets but do not remove plaque biofilm like mechanical methods.
Question 6: When documenting gingival recession, the EFDA records the distance from the:
- Incisal edge to the CEJ
- CEJ to the free gingival margin (Correct answer)
- Free gingival margin to the mucogingival junction
- Alveolar crest to the CEJ
Correct answer: CEJ to the free gingival margin
Recession is measured from the cementoenamel junction (CEJ) to the free gingival margin to quantify how far the gingiva has migrated apically.
EFDA EFDA Periodontal Procedures & Oral Health 2
An EFDA performing coronal polishing should avoid polishing which of the following surfaces?