Podcast
Questions and Answers
What does PDI stand for?
What does PDI stand for?
A PDI patient may fall into how many classes?
A PDI patient may fall into how many classes?
PDI class 1 is more complex than PDI class 4.
PDI class 1 is more complex than PDI class 4.
False
What is the primary factor that PDI uses to classify patients?
What is the primary factor that PDI uses to classify patients?
Signup and view all the answers
What is the most common reason a dentist must refer a prosthodontic case?
What is the most common reason a dentist must refer a prosthodontic case?
Signup and view all the answers
Class 1-4 stand for: __________ compromised cases
Class 1-4 stand for: __________ compromised cases
Signup and view all the answers
Match the classes with their corresponding levels of compromise:
Match the classes with their corresponding levels of compromise:
Signup and view all the answers
In the completely edentulous patient, PDI classification is based on how many diagnostic criteria?
In the completely edentulous patient, PDI classification is based on how many diagnostic criteria?
Signup and view all the answers
What is assessed via a panoramic X-ray for mandibular bone height?
What is assessed via a panoramic X-ray for mandibular bone height?
Signup and view all the answers
What PDI class corresponds to limited interarch space of 18-20 mm?
What PDI class corresponds to limited interarch space of 18-20 mm?
Signup and view all the answers
A hyperactive retracted tongue is classified as PDI class 3.
A hyperactive retracted tongue is classified as PDI class 3.
Signup and view all the answers
A normal dentist typically treats PDI class __ and __.
A normal dentist typically treats PDI class __ and __.
Signup and view all the answers
How many factors are used to assess partial edentulism PDI?
How many factors are used to assess partial edentulism PDI?
Signup and view all the answers
What is the PDI class of a completely dentate patient who has 4 or more pathologically affected teeth in 3+ sextants?
What is the PDI class of a completely dentate patient who has 4 or more pathologically affected teeth in 3+ sextants?
Signup and view all the answers
Class 4 PDI in a fully dentate patient indicates the need for major therapy.
Class 4 PDI in a fully dentate patient indicates the need for major therapy.
Signup and view all the answers
What is the maximum number of incisors in the maxilla for class 1 PDI?
What is the maximum number of incisors in the maxilla for class 1 PDI?
Signup and view all the answers
What is the maximum number of incisors in the mandible for class 1 PDI?
What is the maximum number of incisors in the mandible for class 1 PDI?
Signup and view all the answers
What is the maximum permissible number of posterior teeth in class 1 PDI?
What is the maximum permissible number of posterior teeth in class 1 PDI?
Signup and view all the answers
What is the definition of partial edentulism?
What is the definition of partial edentulism?
Signup and view all the answers
What does partial edentulism with one premolar and one molar mean?
What does partial edentulism with one premolar and one molar mean?
Signup and view all the answers
What is the abutment condition in class 1 PDI?
What is the abutment condition in class 1 PDI?
Signup and view all the answers
What is the occlusal scheme for class 1 PDI?
What is the occlusal scheme for class 1 PDI?
Signup and view all the answers
In class 2 PDI, what is the maximum number of maxillary incisors that can be missing?
In class 2 PDI, what is the maximum number of maxillary incisors that can be missing?
Signup and view all the answers
What does class 2 PDI indicate about the abutment condition?
What does class 2 PDI indicate about the abutment condition?
Signup and view all the answers
What is the residual ridge condition in class 2 PDI?
What is the residual ridge condition in class 2 PDI?
Signup and view all the answers
What is the key feature of class 3 partial edentulism?
What is the key feature of class 3 partial edentulism?
Signup and view all the answers
What is the abutment condition in class 3 PDI?
What is the abutment condition in class 3 PDI?
Signup and view all the answers
What is the occlusal scheme for class 3 PDI?
What is the occlusal scheme for class 3 PDI?
Signup and view all the answers
A class 2 jaw is now a minimum class ___ PDI in a partial edentulous patient.
A class 2 jaw is now a minimum class ___ PDI in a partial edentulous patient.
Signup and view all the answers
What is the condition of the residual ridge in class 3 partial edentulous patient?
What is the condition of the residual ridge in class 3 partial edentulous patient?
Signup and view all the answers
What is the condition of the residual ridge for class 4 partial edentulous?
What is the condition of the residual ridge for class 4 partial edentulous?
Signup and view all the answers
Any edentulous area with a guarded prognosis automatically classifies as class ___ PDI.
Any edentulous area with a guarded prognosis automatically classifies as class ___ PDI.
Signup and view all the answers
What class PDI is given to any patient with a congenital maxillofacial defect?
What class PDI is given to any patient with a congenital maxillofacial defect?
Signup and view all the answers
What abutment condition is identified in class 4?
What abutment condition is identified in class 4?
Signup and view all the answers
A class 4 PDI partial edentulous will be a class ____ jaw or a change in what?
A class 4 PDI partial edentulous will be a class ____ jaw or a change in what?
Signup and view all the answers
Class 2 division 2 is classified as a class ___ PDI in partial edentulism.
Class 2 division 2 is classified as a class ___ PDI in partial edentulism.
Signup and view all the answers
What is the residual ridge condition in partial edentulism PDI class 4?
What is the residual ridge condition in partial edentulism PDI class 4?
Signup and view all the answers
What class PDI is indicated for a severe oral manifestation of systemic disease or a refractory partially edentulous patient?
What class PDI is indicated for a severe oral manifestation of systemic disease or a refractory partially edentulous patient?
Signup and view all the answers
Study Notes
PDI Classification Overview
- PDI stands for Prosthodontic Diagnostic Index.
- Patients are classified into three categories: fully edentulous, partially edentulous, and completely dentate.
Complexity of Cases
- PDI complexity ranges from class 1 (least complex) to class 4 (most complex).
- Class 1 indicates mild compromise; class 4 indicates severe compromise.
- Clinical conditions inform the complexity of treatment cases.
Referral Criteria
- 95% of prosthodontic cases may exceed a general dentist's expertise.
- Common reasons for referrals include procedural complexity, medical conditions, equipment requirements, patient preferences, and practitioner skills.
Edentulous Patient Classification
- Fully edentulous patients are classified based on four criteria: maxillo-mandibular relationship, residual ridge morphology, bone height, and muscle attachment.
- Bone height measurement focuses primarily on the mandibular area.
Residual Ridge Morphologies
- Maxillary residual ridge morphology Types A-D:
- Type A: Intact vestibules, well-defined tuberosity, no tori.
- Type B: Lost vestibules, poorly defined tuberosity, rounded tori may be present.
- Type C: Lost vestibules, minimal resistance from palate, interfered by coronoid process.
- Type D: No vestibule, poorly supportive anterior ridge, and tori interference.
Muscle Attachment Types
- Muscle attachment impacts PDI classification:
- Class A: No muscle impingement.
- Class B: Loss in labial attachment.
- Class C: Loss of labial/lingual attachments.
- Class D: Loss of attachments except posterior lingual.
- Class E: Complete loss of vestibule.
Modifying Variables in Edentulism
- Variables affecting difficulty include tongue size, interarch space, pathology, systemic diseases, and TMD.
- Limited interarch space of 18-20 mm is classified as PDI class 3.
Complete Dentate Patient Classification
- Classified based on occlusal scheme and the condition of existing teeth.
- Class 1: Good condition with minimal compromise; no adjustments needed.
- Class 2: Adjunctive therapy required, anterior guidance intact.
- Class 3: Significant pathology affects multiple sextants, requiring comprehensive treatment.
Partial Edentulism Criteria
- Partial edentulous patients assessed on location/extent of edentulous area, abutment condition, occlusal scheme, and residual ridge anatomy.
- Class 1 has limitations on edentulous spans; Class 4 indicates extensive edentulous areas with guarded prognosis.
Complex Cases and Prognosis
- Class 3 and 4 cases often require major therapy with potential changes in occlusal vertical dimension.
- Patients with severe systemic disease manifestations or refractory conditions are likely classified as class 4.
Summary of PDI Classifications
- Classifications serve to guide treatment decisions based on patient needs, anatomical considerations, and complexity of care required.
- Understanding PDI is crucial for effectively planning and executing prosthodontic interventions.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on the Prosthodontic Diagnostic Index with these flashcards. Learn about the different PDI classes, their definitions, and the complexities involved in patient classification. Perfect for students and professionals in dentistry.
