PDI Flashcards
Potential benefits of the system include:
(1) improved intraoperator consistency
(2) improved professional communication
(3) insurance reimbursement commensurate with complexity of care
(4) an improved screening tool for dental school admission clinics
(5) standardized criteria for outcomes assessment and research
(6) enhanced diagnostic consistency and
(7) a simplified aid in the decision-making process associated with referral
PDI
What are the 4 diagnostic criteria for PDI for Complete edentulism?
- Bone Height (mandibular)
- Residual Ridge Morphology (maxilla)
- Muscle Attachments (mandibular)
- Maxillomandibular Relation
What are the 4 diagnostic criteria for PDI for partial edentulism?
- Abutment Condition
- Occlusal Scheme
- Location / Extent Edentulous Areas
- Residual Ridge
What are the 4 diagnostic criteria for PDI for dentate pts?
- Tooth Condition
2. Occlusal Scheme
Class ___ Dentate patient
Tooth Condition and Occlusal Scheme
Dr. Donna Deines
•Ideal or minimally compromised tooth condition
•No localized adjunctive therapy required
•Pathosis that affects the coronal morphology of three or less teeth; one sextant
•Ideal or minimally compromised occlusal scheme
•No pre-prosthetic therapy required
•Contiguous, intact dental arches
•Class I molar and jaw relationships
Class 1 dentate pt
Class ___ Partial Edentulism
1. Location and extent of edentulous area: ideal or minimally compromised
edentulous area confined to a single arch and may include:
• anterior maxillary span that does not exceed 2 incisors,
• anterior mandibular span that does not exceed 4 missing incisors,or
• posterior span that does not exceed 2 premolars or 1 premolar and 1 molar
2. Abutment Condition: ideal or minimally compromised
no need for pre-prosthetic therapy
3. Occlusion: ideal or minimally compromised
no need for pre-prosthetic therapy
Class I molar and jaw relationships.
4. Residual Ridge Morphology: Class I Complete Edentulism description
Class 1
Class ___ Partial Edentulism
Location and extent of the edentulous area: moderately compromised
Location: both arches have edentulous spaces and 1 of the following:
• anterior maxillary span that does not exceed 2 incisors
• anterior mandibular span that does not exceed 4 missing incisors
• posterior span that does not exceed 2 premolars or 1 premolar and 1 molar
• Any missing canine (maxillary or mandibular)
Abutment Condition: moderately compromised
•Insufficient tooth structure to retain or support intracoronal or extracoronal restorations –1 or 2 sextants
•Abutments in 1 - 2 sextants require localized adjunctive therapy (minor)
Occlusion: moderately compromised
•Occlusion requires localized adjunctive therapy (enameloplasty – prematurities)
•Class I molar and jaw relationships are seen.
Residual Ridge Morphology: Class II Complete Edentulism description
Class 2
Class __ Partial Edentulism
Location and extent of the edentulous area: substantially compromised
•1 or both arches; compromised support of abutment teeth
•Posterior maxillary or mandibular edentulous area > 3 teeth or 2 molars
•Any edentulous areas including anterior and posterior areas of 3 or more teeth
Abutment Condition: substantially compromised / fair prognosis
•Insufficient tooth structure to retain or support intracoronal or extracoronal restorations –3 sextants
•More substantial localized adjunctive therapy (perio, endo, ortho treatments) –3 sextants
Occlusion: substantially compromised
•Entire occlusion must be re-established, but without any change in the occlusal vertical dimension.
•Class II molar and jaw relationships are present
Residual Ridge Morphology: Class III Complete Edentulism
Class 3
Class ___ Partial Edentulism
Location and extent of the edentulous area: severely compromised
•Any edentulous area or combination of edentulous areas requiring a high level of patient compliance.
Abutment Condition: severely compromised
•Abutments in 4 or more sextants have insufficient tooth structure to retain or support intracoronal or extracoronal restorations.
•Abutments in 4 or more sextants require extensive adjunctive therapy (ie, periodontal, endodontic, or orthodontic procedures).
•Abutments have guarded prognoses
Occlusion: severely compromised
•Entire occlusion must be reestablished, including changes in the occlusal vertical dimension
•Class II division 2 and Class III molar and jaw relationships are seen
Residual Ridge Morphology: Class IV Complete Edentulism
Class 4
Class __ Dentate patient
Tooth Condition and Occlusal Scheme
Dr. Donna Deines
•Ideal or minimally compromised tooth condition
•No localized adjunctive therapy required
•Pathosis that affects the coronal morphology of three or less teeth; one sextant
•Ideal or minimally compromised occlusal scheme
•No pre-prosthetic therapy required
•Contiguous, intact dental arches
•Class I molar and jaw relationships
Class 1
Class ___ Dentate patient
Dr. Donna Deines
Moderately compromised tooth condition
•Insufficient tooth structure to retain or support intracoronal or extracoronal restorations –one sextant (pin-retained core / post-core)
•Pathosis that affects the coronal morphology of 4 or more teeth in a sextant
•Pathosis can be in 2 sextants and can be in opposing arches
•Teeth require localized adjunctive therapy, i.e., periodontal, endodontic or orthodontic procedure for a single tooth or in a single sextant.
Moderately compromised occlusal scheme•Occlusal scheme requires localized adjunctive therapy•Enameloplasty on premature occlusal contacts•Anterior guidance is intact
•Class I molar and jaw relationships
Class 2
Class ___: Completely Dentate Patient
Dr. Donna Deines
•Substantially Compromised Tooth Condition
•Insufficient tooth structure to retain or support intracoronal or extracoronal restoration—2 sextants
•Pathosis that affects the coronal morphology of 4 or more teeth in 3 or more sextants
•Pathosis can be in 3 sextants in the same arch and/or in opposing arches
•Teeth require more substantial localized adjunctive therapy, i.e., periodontal, endodontic or orthodontic procedures for teeth in 2 sextants
•Substantially Compromised Occlusal Scheme
•Occlusal scheme requires major therapy to maintain the entire occlusal scheme without any change in the occlusal vertical dimension
Class 3
Class ____ Completely Dentate Patient
Severely Compromised Tooth Condition
•Insufficient tooth structure to retain or support intracoronal or extracoronal restorations –3 or more sextants
•Pathosis affects coronal morphology of ≥ 4 teeth in all sextants
•Teeth in ≥4 sextants require extensive adjunctive therapy (perio, endo, or ortho)
Severely Compromised Occlusal Scheme
•Occlusal scheme requires major therapy to re-establish the entire
occlusal scheme including any changes in the occlusal vertical dimension•Class II, Division 2 malocclusion
•Class III molar and jaw relationships
Class 4
For PDI classification, if one aspect of the case is a 3 but another aspect is a 2, what would the classification be?
Higher class always wins: Class 3
