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Dental Materials Reference Guide

Direct Restorative Materials

Composite Resins

Indications:

  • Class III, IV, and V restorations
  • Class I and II restorations in low-stress areas
  • Esthetic anterior restorations
  • Core buildups

Contraindications:

  • Inability to achieve isolation
  • Large posterior restorations in high-stress areas
  • Patients with heavy bruxism

Procedure:

  1. Tooth preparation with rounded internal line angles
  2. Etch (if using total-etch technique)
  3. Apply bonding agent
  4. Incremental placement and light curing
  5. Finishing and polishing

Glass Ionomer Cements (GIC)

Indications:

  • Class V carious lesions
  • Luting cement
  • Base/liner
  • Pediatric dentistry
  • ART (Atraumatic Restorative Treatment)

Contraindications:

  • High-stress bearing areas
  • Areas requiring high esthetics
Note: Resin-modified GIC (RMGIC) offers improved strength and esthetics compared to conventional GIC.

Amalgam

Indications:

  • Class I and II restorations
  • Core buildups
  • Foundations
  • Teeth with heavy occlusal forces

Contraindications:

  • Esthetic areas
  • Small to moderate Class I restorations
  • Patients with mercury allergy
Safety: Use proper mercury hygiene protocols during handling and disposal.

Indirect Restorative Materials

All-Ceramic Restorations

Types: Lithium Disilicate (e.max), Zirconia, Feldspathic porcelain

Indications:

  • Veneers
  • Inlays/Onlays
  • Crowns
  • Bridges (limited span)
Note: Zirconia offers higher strength but is more opaque, while lithium disilicate provides better translucency.

Metal-Ceramic Restorations

Indications:

  • Single crowns
  • Fixed partial dentures
  • Implant restorations

Contraindications:

  • Patients with metal allergies
  • High esthetic demand areas

Luting Cements

Type Uses Advantages Disadvantages
Resin Cement All-ceramic restorations, veneers, posts High strength, esthetic, low solubility Technique sensitive, more expensive
Resin-Modified GIC Porcelain-fused-to-metal crowns, ortho brackets Fluoride release, good bond to tooth Less esthetic than resin cements
Zinc Phosphate Traditional crowns, bridges Long track record, inexpensive No chemical bond, high solubility
Zinc Oxide Eugenol Temporary cementation, sedative dressing Soothing to pulp, easy cleanup Low strength, eugenol may inhibit polymerization

Liners and Bases

Calcium Hydroxide

Use: Direct/indirect pulp capping, deep cavities near pulp

Properties: Antibacterial, stimulates reparative dentin

Glass Ionomer

Use: Base under restorations, dentin replacement

Properties: Adheres to dentin, fluoride release, biocompatible

Resin-Modified Glass Ionomer

Use: Base under composite restorations

Properties: Dual-cure, stronger than conventional GIC

Bonding Agents

Total-Etch (4th/5th Generation)

Steps: Etch → Rinse → Dry → Primer → Adhesive

Uses: Standard technique for most direct restorations

Self-Etch (6th/7th Generation)

Steps: Apply self-etch adhesive → Light cure

Uses: Faster technique, less technique sensitive

Universal Adhesives (8th Generation)

Steps: Can be used in self-etch, total-etch, or selective-etch mode

Uses: Versatile, simplified procedure

Clinical Tip: Always follow manufacturer's instructions for optimal bonding performance.

Provisional Materials

Prefabricated Crowns

Types: Polycarbonate, aluminum, stainless steel

Uses: Quick temporization, pediatric crowns

Bis-Acryl Composites

Properties: Good marginal adaptation, wear resistance

Uses: Custom temporaries, long-term provisionals

Polymethyl Methacrylate (PMMA)

Properties: Durable, can be relined

Uses: Long-term provisionals, diagnostic wax-ups

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