Assigning prognosis:
Good Prognosis: Indicates that there is adequate periodontal support and it is possible to control etiologic factors to assure that the teeth will be relatively easily maintained.
Assigning prognosis
Fair prognosis: Indicates there is a good chance that the teeth can be restored to health and retained, assuming proper maintenance.
would allow proper maintenance, but with difficulty.
Assigning prognosis
Questionable prognosis: One or more of the following:
- Severe attachment loss resulting in a poor crown-to root ratio.
牙周病学电子教案
Chapter11
Periodontal Prognosis& Periodontal Treatment Planning
Factors to consider when assigning overall Prognosis
1Type of periodontitis: chronic or aggressive, with or without systemic factors.
2 Degree of periodontium destruction (Disease Severity)
3 The elimination of local factors: calculus, plaque, occlusal trauma
4 Tooth mobility degree
5 The number of teeth remaining in oral cavity 6 patient cooperation:self-performing plaque
Assigning prognosis
The following criteria constitute a good prognosis: - Probing depth 0-3mm. - Less than 10% bone loss. - No furcation. - No pathologic mobility.
control, reevaluation at time 7 environmental and behavioral factors:smoking 8 systemic factors: diabetes 9 age:
Factors to consider when assigning individual tooth prognosis:
1 PD and AL 2 the alveolar bone resorption degree and
types: 3 tooth mobility degree 4 Anatomic factors: short, tapered roots; cervical
enamel projections, root concavities, developmental grooves
Assigning prognosis
Poor prognosis: One or more of the following:
Moderate attachment loss. Class I and /or class II furaction(s) The location and depth of the furaction
Periodontal Treatment Planning
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- Poor root form. - Deep class II or Class III furcation. - 2+mobility or greater.
Assigning prognosis
Hopeless Prognosis: Inadequate attachment to maintain the tooth in health, comfort and function. Extraction is recommended.
Assigning prognosis
Becker et at (1984) recommended one or more of the following to assign hopeless prognosis:
More than 70% of bone loss. Probing depth >8mm. Class III furcation Mobility grade III. Poor crown –root ratio. History of repeated periodontal abscess formation.
Assigning prognosis
The following factors are suggestive of fair prognosis:(one or more) - Pocket depth up to 5mm. - Up to 30 % bone loss. - Maintainable Class I furcation. - Mobility I.