Prognosis

Question 1

what is class A

Answer 1

• good -> minimal risk of being lost
• 80-100% bone support -> easy to maintain
• 80-100% sound coronal tissue
• can complete endo tx
• tooth in correct position

Question 2

what is class B

Answer 2

• fair-> low risk of being lost in forseen future
• 50-80% bone support -> well maintained/any furcations well maintained and cleaned
• 50-80% sound tooth structure
• tooth not in position but can be adjusted
• predictable endo retreatment/difficult endo tx

Question 3

what is class C

Answer 3

• questionable -> medium risk of being lost
• 30-50% bone support -> difficult to maintain cleaning
• 30-50% sound tooth structure
• acute or chronic failing endo tx/difficult to predict retx
• not in position and requires procedures to function

Question 4

what is class D

Answer 4

• comprimised - > high risk of being lost/immediate extraction
• less than 30% bone support -> cannot be well maintained/active perio lesion
• less than 30% tooth structure
• failing endo - no predictability of retx
• tooth severely out of place -> tilted after tx/position impacts health of adj structures

Question 5

what is class X

Answer 5

• non-salvageable -> extraction/unrestorable
• less than 30% bone support -> cannot be cleaned/maintained without infection
• no remaining supra crown structure
• supererupted/tilted -> cannot be restored to function

Question 6

what are the pros of prognosis

Answer 6

• peer-reviewed
• comprehensive systematic approach
• practical classification system to prognosis
• txp and pt communication

Question 7

what are the cons of prognosis

Answer 7

subjective clinical tx

Question 8

what are the criteria for evaluating prognosis

Answer 8

• peri condition and bone support
• restorability
• endo condition
• occlusal plane and tooth position
• anatomic irregularities
• iatrogenic compromising factors

Question 9

define prognosis

Answer 9

predicition of the future course of the disease and treatment outcome