Final; Prognosis Flashcards
What is a prognosis
it is a prediction of the course, duration, and outcome of a disease based on the pathogenesis of the disease and the presence of risk factors for the disease
When is a prognosis established
after the diagnosis is made and before the treatment plan is established
What are the two types of prognosis
overall
individual tooth
What four things compile the overall clinical factors
patient age
disease severity
plaque control
patient compliance
What are four systemic/environmental factors
smoking
systemic disease/condition
genetic factors
stress
What are four prosthetic/restorative factors
abutment selection
caries
non-vital teeth
root resorption
What are some factors that can affect the overall prognosis
age current severity of disease systemic factors smoking plaque/calculus/local factors patient compliance prosthetic possibilities
Why do you determine the overall prognosis before the individual tooth
if the overall prognosis of the whole moth is hopeless, then don’t plan on keeping teeth regardless
What are some factors that can affect the individual tooth prognosis
affected by overall prognosis mobility probe depth bone loss furcation involvement local factors
What are the classifications of the Becker, Berg, and Becker
good
questionable
hopeless
What are the classifications of McGuire and Nunn
good
fair
poor
hopeless
What classifies a good prognosis under the BBB classification system
<2 mobility
What classifies a questionable prognosis under the BBB classification system
50% bone loss
6-8mm probing depth
class 2 furcation
anatomical variables
What classifies a hopeless prognosis under the BBB system
more than 75% bone loss more than 8mm probing depth class 3 furcation class 3 mobility poor crown/root ratio unfavorable root proximity repeated periodontal abscess formation
*What classifies a good prognosis under the McGuire and Nunn system
adequate remaining bone support
adequate possibilites to control etiological factors
patient cooperation
no systemic environmental factors or well controlled
What classifies a fair prognosis under the McGuire and Nunn system
25-50% attachment loss
grade I or grade II furcation involvement
adequate maintenance possible
few systemic complications
What differs between BBB and M&N
M&N uses attachment loss, BBB uses bone loss
What classifies a poor prognosis with McGuire and Nunn
> 50% attachment loss
tooth mobility
grade I and II furcation involvements
difficult to maintain areas Sandor doubtful patient cooperation
presence of systemic/environmental factors
What classifies a hopeless prognosis with McGuire and Nunn
>75% attachment loss tooth mobility 2+ grade II and III furcation involvements difficult-to-maintian areas and/or doubtful patient cooperation root proximity
Why would the prognosis for a patient that is older but with the same amount of bone loss as someone younger, be better
for the older person is took however long (60 years or whatever) to get that loss, while someone younger, took less, although the younger patient may have a better restorative capacity
What are two parameters of disease severity
level of clinical attachment
radiographic examination shows the amount of root surface still invested in the bone
Which has a better prognosis; a tooth with deep pockets and little attachment loss or one with shallow pockets and severe attachment and bone loss
deep pockets and little attachment loss
What differs in prognosis of bone loss defects
horizontal bone loss depends on the hight of existing bone
in regards to angular bone loss, the number of remaining walls
This is nearer to the crown which results in a more favorable distribution of forces to the periodontium and less tooth mobility
Cres
