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Restorative Dentistry

Restoration of a tooth includes two main steps:

  • Tooth preparation
  • Placement of restorative materials
Tooth preparation

The process of tooth preparation involves cutting the tooth with a dental bur to remove the decayed portions and make space for the restorative material to be placed.

Placement of restorative materialsRestorative Dentistry — St-32
  • Silver amalgam restorationSilver amalgam is a metal-like filling material which is composed of amixture of silver/tin/copper alloy and mercury.
  • Glass ionomer cement restorationGlass ionomer cement is a tooth-coloured filling Restorative Dentistry — St-33material which bonds chemically to the tooth structure and releases fluoride.
  • Composite resin restorationComposite resin is a tooth coloured cross-linked polymeric fillingmaterial. There are two types:
  • Self-cured composites:Available in a two-paste system.
  • Light-cured composites:Available in a single paste system. UV light or visible light is used toRestorative Dentistry — St-34 cure.

Clinical Technique:

Shade selection is done at the start of the appointment. Natural light is used to select the shade.Cosmetic Dentistry — St-39

Tooth preparation:

The tooth preparation is determined by the size, shape and location of the defect. It should include all caries and faults in the tooth structure.

The discoloured tooth structure is removed as required for aesthetics.Restorative Dentistry — St-56

  • Isolation of the operating site
    It is important to keep the tooth area free of moisture; therefore, a rubber dam or cotton roll isolation is done.
  • Acid etching
    37% phosphoric acid is applied for 15 seconds with a micro brush.It is washed off with water and dried if the cavity is on enamel only.Restorative Dentistry — St-57
  • Placement of primer and adhesive
    On the etched surface, the bonding agent is rubbed with an applicator tip. The resin is cured for 10-20 seconds.
  • Insert ion of comp osit e resin: Incremental placement is done using hand instrument and each increment is light-cured.Restorative Dentistry — St-58
  • Finishing and polishing
    Carbide finishing bur and fine grit diamond finishing burs are used to contour the restoration.

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