Examius
🇮🇳 NEET MDS · flashcards
NEET MDS Conservative Dentistry, Endodontics And Dental Materials Flashcards
50 question-and-answer cards covering Conservative Dentistry, Endodontics And Dental Materials as it is examined in NEET MDS. 24 of them are printed below, taken from across the deck — no signup, no paywall on the preview.
24 sample cards from the Conservative Dentistry, Endodontics And Dental Materials deck
Sampled from the end of the deck, so these are different cards from the ones shown on the syllabus page.
List the steps of cavity preparation according to G.V. Black.
(1) Outline form, (2) Resistance form, (3) Retention form, (4) Convenience form, (5) Removal of remaining caries, (6) Finishing of enamel walls/margins, and (7) Toilet (debridement) of the cavity.
What is the difference between resistance form and retention form?
Resistance form enables the restoration and tooth to withstand occlusal forces without fracture (e.g., flat pulpal floor, rounded internal angles). Retention form prevents displacement of the restoration (e.g., undercuts, dovetails, parallel walls).
State G.V. Black's classification of caries (Classes I–VI).
Class I: pits/fissures. Class II: proximal of posteriors. Class III: proximal of anteriors (incisal angle intact). Class IV: proximal of anteriors with incisal angle involved. Class V: cervical/gingival third. Class VI: cusp tips/incisal edges (Simon's addition).
What is the primary philosophy of Minimal Intervention Dentistry (MID)?
MID emphasizes early caries detection, remineralization of non-cavitated lesions, conservative removal of only infected tissue (preserving tooth structure), and adhesive restorations—shifting from 'extension for prevention' to 'prevention of extension'.
What is Atraumatic Restorative Treatment (ART)?
ART is a minimal intervention technique using hand instruments only to remove soft caries (no rotary/drill), then restoring with high-viscosity glass ionomer. It is useful in field settings and for anxious/pediatric patients.
What is the difference between total-etch and self-etch bonding systems?
Total-etch (etch-and-rinse) uses separate phosphoric acid etching of enamel and dentin, then rinses. Self-etch uses acidic monomers that etch and prime simultaneously without rinsing, reducing technique sensitivity and postoperative sensitivity.
What is the hybrid layer in dentin bonding?
The hybrid layer (resin-dentin interdiffusion zone) is formed when resin monomers infiltrate the demineralized collagen network of etched dentin and polymerize, creating micromechanical bonding (described by Nakabayashi).
What are the main types of composite resin filler based on particle size?
Macrofilled (~8–12 µm), microfilled (~0.04 µm, best polish), hybrid (combination), microhybrid, and nanofilled/nanohybrid composites (best balance of strength and polishability).
What is polymerization shrinkage in composites and how is it managed?
Composites shrink (~2–3 vol%) during polymerization, creating contraction stress and marginal gaps. It is managed by incremental layering, using low-shrink/bulk-fill composites, proper C-factor management, and soft-start curing.
What is the C-factor (configuration factor)?
C-factor is the ratio of bonded to unbonded (free) surfaces in a cavity. A higher C-factor means more polymerization stress and greater risk of debonding; Class I cavities have the highest C-factor.
What is the mechanism of vital tooth bleaching agents?
Hydrogen peroxide (or carbamide peroxide which breaks down to H2O2 and urea) releases free radicals/reactive oxygen that oxidize and break down large pigmented organic molecules in tooth structure into smaller, lighter molecules.
What is the walking bleach technique?
The walking bleach technique is for non-vital (endodontically treated) discolored teeth: a paste of sodium perborate (with or without H2O2) is sealed in the pulp chamber and changed periodically until the desired shade is achieved.
Differentiate direct and indirect veneers.
Direct veneers are made chairside by directly bonding composite resin to the tooth in a single visit. Indirect veneers are fabricated in a lab (porcelain/ceramic or composite) from an impression and bonded in a later visit; they are more durable and stain-resistant.
Define abrasion, attrition, abfraction, and erosion (non-carious lesions).
Attrition: wear from tooth-to-tooth contact. Abrasion: wear from external mechanical agents (e.g., hard brushing). Abfraction: cervical loss from occlusal flexural/tensile stress. Erosion: chemical dissolution by acids (non-bacterial, e.g., dietary/GERD).
What is the typical clinical appearance of an abfraction lesion?
An abfraction lesion is a wedge-shaped (V-shaped) notch at the cervical area with sharp internal line angles, located at the cementoenamel junction, attributed to occlusal stress concentration (cusp flexure).
Differentiate reversible from irreversible pulpitis.
Reversible pulpitis: short, sharp pain to stimuli (cold) that subsides quickly; pulp can heal if irritant removed. Irreversible pulpitis: spontaneous, lingering pain (often worse with heat, relieved by cold in late stage); requires root canal therapy or extraction.
What is the difference between acute apical periodontitis and a periapical abscess?
Acute apical periodontitis is inflammation of the periapical ligament causing tenderness to percussion, often with a normal radiograph. A periapical (acute alveolar) abscess is a localized collection of pus with severe pain, swelling, and possible systemic signs.
Differentiate a periapical (radicular) cyst from a granuloma radiographically and histologically.
Both appear as periapical radiolucencies; definitive differentiation is histological. A periapical granuloma is granulation tissue with chronic inflammatory cells; a radicular cyst has an epithelial lining (from rests of Malassez) enclosing a fluid-filled cavity, usually larger.
Name the laws of access cavity preparation (Krasner & Rankow / endodontic).
Key principles: Law of centrality (pulp chamber floor is centered), Law of concentricity (chamber walls concentric with external surface), Law of CEJ (CEJ is the most consistent landmark for locating the chamber), and Laws of symmetry, color change, and orifice location.
What is the ideal working length determination in endodontics?
Working length is the distance from a coronal reference point to the apical constriction (minor diameter), ideally 0.5–1 mm short of the radiographic apex. It is confirmed with apex locator and radiographs to keep instrumentation within the canal.
What is the role of EDTA and sodium hypochlorite in canal cleaning and shaping?
Sodium hypochlorite (NaOCl) dissolves organic tissue/pulp remnants and is antibacterial. EDTA (a chelating agent) removes the inorganic smear layer and softens dentin to aid instrumentation; they are used alternately for thorough cleaning.
What is the gold standard obturating material and sealer function?
Gutta-percha is the gold standard core obturating material (biocompatible, dimensionally stable). The sealer (e.g., zinc oxide eugenol, resin, or bioceramic) fills voids, bonds gutta-percha to canal walls, and seals accessory canals/irregularities.
What is apicoectomy and when is endodontic retreatment vs surgery indicated?
Apicoectomy (root-end resection) is surgical removal of the apical root tip plus periapical curettage and retrograde filling. Non-surgical retreatment (removing old fill and re-cleaning) is preferred first; surgery is indicated when retreatment fails, is impractical, or for biopsy.
What is the most common material used for retrograde (root-end) fillings today and why?
Mineral Trioxide Aggregate (MTA) is preferred for root-end fillings because it is biocompatible, sets in the presence of moisture/blood, has excellent sealing ability, is bacteriostatic, and promotes hard-tissue (cementum) formation.
What this deck covers
This deck covers the Conservative Dentistry, Endodontics And Dental Materials portion of the NEET MDS syllabus in question-and-answer form. Browse the full NEET MDS syllabus to see how it fits with the rest.
Answers are written to be recallable, not just readable — averaging about 241 characters, which is long enough to carry the reasoning and short enough to say out loud.
A deck like this earns its keep on the second and third pass. Read the syllabus first so you know the shape of the subject, then use the cards to find the specific facts that have not stuck.
Conservative Dentistry, Endodontics And Dental Materials flashcards FAQ
How many Conservative Dentistry, Endodontics And Dental Materials flashcards are in this NEET MDS deck?
50 cards. This page previews 24 of them, sampled evenly across the deck so you can judge the difficulty before installing anything.
Are these NEET MDS flashcards free?
Yes. The preview here is free to read with no signup, and the full 50-card deck is free inside the Examius app.
What do the Conservative Dentistry, Endodontics And Dental Materials cards cover?
They follow the Conservative Dentistry, Endodontics And Dental Materials portion of the NEET MDS syllabus, in question-and-answer form.
How should I use these flashcards?
Read the syllabus first so you know the shape of the subject, then drill the deck. Examius schedules each card with spaced repetition, so cards you keep missing come back sooner and ones you know drift further apart.