Dental Problems

How is Cementation done for Stainless Steel Crown Preparation?

tooth-5Cementation is one of the procedures for the tooth restorations. The cementation done for stainless steel crown preparation is discussed briefly below in this article. Let us examine them.

Stainless steel crown should be cemented only on clean dry tooth. Isolation of teeth with cotton rolls is recommended. The following is the procedure for

cementation of stainless steel crown preparation:

  • Rinse and dry the crown inside and out and prepare to cement it.
  • A ZnPOâ‚„ (zinc phosphate), polycarboxylate or GIC is preferred.
  • If ZnPOâ‚„ is used, 2 coats of cavity varnish should be applied on vital tooth before cementation and cement should be of consistency so that it strings about 1 ½ inches from mixing pad with the spatula.
  • Cement is filled in approximately 2/3rd of crown, with all inner surface covered.
  • Seat the crown completely on dried tooth surface preparation.
  • Final placement should follow an established path of insertion of the crown.
  • Cement should be expressed around all margins.
  • To ensure complete seating of the crown, handle of mirror or band pusher may be used.
  • Before the cement sets, ask the patient to close into centric occlusion by applying pressure through a cotton roll and confirm that the occlusion has not been altered.
  • ZnPOâ‚„ cement can be easily removed with an explorer or scaler.
  • After the polycarboxylate cement is partially set, it will reach a rubbery consistency.
  • Excess cement should be removed at this stage with a explorer tip.
  • The interproximal areas can be cleaned by passing the dental floss through these areas.
  • Rinse the oral cavity and before dismissing the patient reexamine the occlusion and the soft tissues.

Among all the cements used for cementation the GICs are quite new and very promising. Cementing stainless steel crown with GIC have some benefits. These cements have comparable strengths as ZnPOâ‚„, release fluoride as do the silicophosphates chelate or bond to the tooth structure and compatible to the pulp as do the polycarboxylates.

But the response to GIC was characterized by gingival enlargement and sulcular bleeding with no tooth sensitivity. The reason for this is unknown. It could be due to excess material in the gingival sulcus. Hence the most versatile, retentive and least irritating cement available at present time appears to be polycarboxylate.

The above article discusses briefly about thecementation procedure done for stainless steel crown preparation.

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