Dental Problems

What are the Special Considerations for Stainless Steel Crowns?

How to Clean Mouth GuardTooth restorations are done using various restorative materials. Though, there are various materials, stainless steel crowns are one among the semi permanent restorations. The literature on tooth caries risk factors particularly in young kids indicate that kids who are at high risk of exhibiting molar caries and/or anterior tooth decay may benefit with stainless steel crown treatment to protect the remaining tooth surfaces that are at risk. There are many special considerations for the stainless steel crowns which are mentioned below. Read on to know more.

Special considerations for stainless steel crowns

  • Quadrant dentistry:

    When the quadrant dentistry is practiced, stainless steel crowns are to be placed on the adjacent teeth. Few points which are to be considered here are as follows:

    • Prepare the occlusal reduction of one tooth completely before beginning the occlusal reduction of the other tooth as there is tendency to under reduce both, when reduction on both the teeth is done simultaneously.
    • Reduce the adjacent proximal surface of the teeth being restored more than when only one tooth is restored. The greater reduction will ease the placement of the crowns and interproximal approximation.
    • Both crown should be trimmed, contoured and prepared for adjustment in the interproximal spaces and establish proper contact areas.

    To get these adjustments, adapt and seat the crown on the most distal tooth first and proceed mesially.

  • Crown in areas of space loss:

    When there is an extensive and long standing caries, the primary teeth shift into the interproximal contact areas. As a result the crown required to fit over the B-L dimensions will be too wide a M-D to be placed and the crown selected to fit over the M-D space will be too small in circumference.

    • Select a larger crown which will fit over the tooth’s greatest convexity.
    • Reduce the M-D width by grasping the marginal ridges of the crown with Howe utility pliers and squeezing the crown.
    • Recontour the proximal, buccal and lingual walls of the crown with the number 137 or 114 pliers.
    • Do the additional reduction of buccal and lingual surface of tooth and select a smaller crown, if this crown is difficult to place.
  • Preparing a stainless steel crown adjacent to a class II amalgam:

    • Place the rubber dam.
    • Crown reduction is completed and the crown is adapted.
    • Next a matrix band and wedges are placed. Amalgam is inserted and carved.
    • With the matrix band in place, the crown is removed safely without fracturing the amalgam.
    • Then remove the matrix band and the final carving of the amalgam is done, as there is good visibility and access to the proximal box area.
    • Now complete the crown adaptation and cement the crown.

    The advantage of this approach is that, because the crown and class II amalgams are prepared and restored concurrently, better restoration may result and it helps to overcome the placement of 2 rubber dams.

The above article discusses briefly about the special considerations for the stainless steel crowns. For almost about 50 years, dentists are using these stainless steel crowns for semi-permanent tooth restorations and also for permanent posterior teeth and primary teeth. This type of restorations is better than other types of restorations in terms of convenience, durability, reliability and low cost, particularly when there is a requirement of interim full-coronal coverage. Over the years, performed restorations with stainless steel crown have improved a lot. Different methods of stainless steel crown manipulation have evolved and better luting cements for better restorations have been developed.

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