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Questions and Answers
What are the two factors evaluated to set up the classification system for dental surface defects?
What are the two factors evaluated to set up the classification system for dental surface defects?
How many classes of dental surface defects were identified based on the evaluated factors?
How many classes of dental surface defects were identified based on the evaluated factors?
Four classes
What does class A+ indicate in the classification system?
What does class A+ indicate in the classification system?
What percentage of exposed root surfaces showed an identifiable CEJ associated with a root surface defect?
What percentage of exposed root surfaces showed an identifiable CEJ associated with a root surface defect?
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The classification includes considerations of the condition of the exposed root surface.
The classification includes considerations of the condition of the exposed root surface.
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Who proposed the four classes of marginal gingival recessions?
Who proposed the four classes of marginal gingival recessions?
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What is the clinical significance of the CEJ during diagnosis and treatment of dental surface defects?
What is the clinical significance of the CEJ during diagnosis and treatment of dental surface defects?
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Study Notes
Classification of Dental Surface Defects
- A clinical classification system for dental surface defects in gingival recession was proposed.
- Two critical factors evaluated for classification:
- Presence (A) or absence (B) of cemento-enamel junction (CEJ)
- Presence (+) or absence (-) of dental surface discrepancies caused by abrasion (step).
- Four classes were established:
- Class A+: Identifiable CEJ with root surface defects
- Class A-: Identifiable CEJ without defects
- Class B+: Unidentifiable CEJ with defects
- Class B-: Unidentifiable CEJ without defects.
Research Methodology and Results
- A total of 1,010 gingival recessions were assessed from 353 patients.
- Intrarater agreement ranged from 0.74 to 0.95, indicating almost perfect consistency.
- Inter-rater agreement varied from 0.26 to 0.59, demonstrating moderate consistency.
- Distribution of cases among the four classes:
- Class A+: 14% (144 cases) had identifiable CEJ with defects.
- Class A-: 46% (469 cases) had identifiable CEJ without defects.
- Class B+: 24% (244 cases) had unidentifiable CEJ with defects.
- Class B-: 15% (153 cases) had unidentifiable CEJ without defects.
Importance of the Classification
- The classification addresses the diagnosis of gingival recession areas, focusing on dental surface defects, and is crucial for treatment planning.
- It provides a system to evaluate different degrees of damage to periodontal tissues.
- The condition of exposed root surfaces is highlighted, particularly the presence or absence of identifiable CEJ and root abrasion.
Clinical Relevance
- The CEJ serves as a reference point for diagnosis and treatment, critical for achieving anatomic and aesthetic success post-surgery.
- Maintaining a gingival margin slightly above the CEJ and ensuring good integration of grafted tissue are key for effective outcomes.
- Challenges in identifying CEJ may arise due to abrasion from brushing or cervical caries, complicating the measurement of recession depth and width during evaluation.
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Description
This quiz examines the clinical classification system for dental surface defects in gingival recession. It covers key factors influencing the classification, the established classes based on CEJ and surface discrepancies, and assesses the methodology of a large patient study. Test your understanding of this important dental concept.
