Black's Classifications

Question 1

What does extension for prevention refer to?

Answer 1

Preps were made as large as possible and extended out past the carie in a hope of preventing future decay.

Question 2

What is a class I lesion/prep?

Answer 2

Class I preps are are on:

• the facial,lingual, or occlusal surface of molars.
• The pits or fissures of premolars
• lingual surfaces of maxillary anteriors

Question 3

What is a Class II lesion/prep?

Answer 3

Class II lesions/preps are:

• on proximals of posteriors(molars/premolars)
• form at or below contact area
• can form fromfood impaction due to lack of flossing
• these do not include anteriors

Question 4

What is used to detect class II lesions and how are they prepped?

Answer 4

Class II lesions are detected with bitewing x-rays and you drop a box to fill them.

Question 5

What is a Class III lesion/prep?

Answer 5

A Class III lesion/prep is on the interproximals of the anterior teeth and does not affect the incisal edge.

Question 6

What is a Class IV lesion/prep?

Answer 6

A Class IV lesion/prep is on the proximal surface of anterior teeth but also involves the incisal edge.

Question 7

What is a Class V lesion/prep?

Answer 7

A Class V lesion/prep is one that is on the facial or lingual in the cervical 1/3 of a tooth

• can be on anterior or posterior teeth
• can be cause by erosion,abrasion, or abfraction
• may involve the root

Question 8

What is a Class VI lesion/prep?

Answer 8

A Class VI lesion/prep is caries on the incisal edge of anterior teeth or the cusps of posterior teeth.