MDA Chapter 58 - Coronal Polishing
UPDATED ACTUAL Questions and
CORRECT Answers
Explain the difference between a prophylaxis and coronal polishing. - CORRECT
ANSWER - Coronal polishing removes plaque and stains from the coronal portion of the
tooth.
Prophylaxis removes plaque, stains, debris, and calculus from the teeth.
Explain the indications for coronal polishing. - CORRECT ANSWER - Indications
- before placement of a sealant
- before placement of a dental dam
- before cementation of orthodontic bands
- before application of acid etching solution on enamel
- before cementation of crowns and bridges
Name and describe the types of extrinsic stains. - CORRECT ANSWER - 1. Black Stain -
black line on teeth near the gingival margin, is difficult to remove, caused by natural tendencies
2. Tobacco Stains - a very tenacious dark brown or black stain, caused by the products of coal,
tar in tobacco and by the penetration of tobacco juices into pits and fissures, enamel, and dentin
of the teeth.
3. Brown or Yellow Stains - most commonly found on the buccal surfaces of the max molars,
and the lingual surfaces of the lower anterior incisors, caused by poor oral hygiene.
4. Green Stain - appears as a green or green-yellow usually on the facial surfaces of the max
anterior teeth, caused by poor oral hygiene when bacteria or fungi are retained in bacterial
plaque.
UPDATED ACTUAL Questions and
CORRECT Answers
Explain the difference between a prophylaxis and coronal polishing. - CORRECT
ANSWER - Coronal polishing removes plaque and stains from the coronal portion of the
tooth.
Prophylaxis removes plaque, stains, debris, and calculus from the teeth.
Explain the indications for coronal polishing. - CORRECT ANSWER - Indications
- before placement of a sealant
- before placement of a dental dam
- before cementation of orthodontic bands
- before application of acid etching solution on enamel
- before cementation of crowns and bridges
Name and describe the types of extrinsic stains. - CORRECT ANSWER - 1. Black Stain -
black line on teeth near the gingival margin, is difficult to remove, caused by natural tendencies
2. Tobacco Stains - a very tenacious dark brown or black stain, caused by the products of coal,
tar in tobacco and by the penetration of tobacco juices into pits and fissures, enamel, and dentin
of the teeth.
3. Brown or Yellow Stains - most commonly found on the buccal surfaces of the max molars,
and the lingual surfaces of the lower anterior incisors, caused by poor oral hygiene.
4. Green Stain - appears as a green or green-yellow usually on the facial surfaces of the max
anterior teeth, caused by poor oral hygiene when bacteria or fungi are retained in bacterial
plaque.
