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Stainless steel crowns 
Types of stainless steel crowns 
Stainless steel crowns are available in six sizes for both primary molars and 
permanent first molars. Sizes 4 and 5 are the most often used. A size 7 is available for 
extra-large teeth. These sizes are supplied in kit form, with the user needing to record 
only those sizes frequently used. 
 
1. Untrimmed crowns: These crowns are neither trimmed nor contoured, require lot of 
adaptation, thus are time consuming. 
2. Pre-trimmed crowns: These crowns have straight, non-contoured side but are 
festooned to follow a line parallel to the gingival crest. They still require contouring 
and trimming . 
3. Pre-contoured crowns: These crowns are festooned and are also precontoured 
although a minimal amount of festooning and trimming may be necessary 
 
Advantages 

 

SSCs offer the following advantages: 

1.  excellent durability 
2.  the least frequently replaced restoration 
3.  full coverage assists in controlling caries progression 
4.  can be done quickly assuming good patient behavior and operator skill. 

 
Disadvantages  
SSCs pose the following disadvantages: 

1.  parents may object to appearance 
2.  preformed crowns may be challenging to adapt to tooth 
3.  transient damage to periodontium 

4. 

may contribute to ectopic eruption of first permanent molars

 

 
Indications 

1.  Extensive Caries 
2.  Developmental Enamel Defects 
3.  Following Pulp Therapy 
4.  For Temporary Restoration of a Fractured Tooth 
5.  As an Abutment for Space Maintainer 

 
Contraindications
 

1.  Primary  posterior  teeth  in  which  conservative  amalgam  restorations  can  be 

placed.  Quality  of  amalgam  restorations  continues  to  be  the  preferred 
restoration in many primary molars. 

2.  Exfoliation: Teeth expected to exfoliate within a brief period (6 to 12 months) 

and radiograph shows over half the primary root resorbed. 

3.  Poor esthetics in the anterior teeth  
4.  Cost:  The  cost-effectiveness  of  any  restoration  should    be  considered  in 

treatment planning; 

5.  Periodontal problems:  
6.  Patients with nickel allergies. 

 
Steps in Stainless Steel Crown Procedure 
• Occlusal reduction 


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• Proximal reduction 
• Buccal and lingual reduction 
• Selection of crown 
• Initial adaptation and retention 
• Crown contouring 
• Crown finishing 
• Final adaptation 
• Radiographic confirmation of the gingival fit 
• Cementation 
• Postoperative instructions. 
 
Evaluation Criteria for Tooth Preparation 
• The occlusal clearance is 1.5 to 2 mm. (A sheet of wax may be used to indicate area, 
of insufficient reduction). 
• The proximal slices converge toward the occlusal and lingual, following the normal 
proximal contour. 
• An explorer can be passed between the prepared tooth and the proximal tooth at the 
gingival margin of the preparation. 
• The buccal and lingual are reduced at least 0.5 mm with the reduction ending in a 
featheredge 0.5 to 1 mm in to the gingival sulcus. 
• The buccal and lingual surfaces converge slightly toward the occlusal. 
• The occlusal third of the buccal and lingual surfaces is gently rounded. 
• All point and line angles in the preparation are rounded and smoothed. 
 
Checking the Final Adaptation of the Crown 
1. The crown must snap into place. 
2. It should not be able to be removed with finger pressure. 
3. The crown should fit so tightly that there is no rocking on the tooth. Moderate 
occlusal displacement forces at the margin do not displace the crown. 
4. The properly seated crown will correspond to the marginal ridge height of the 
adjacent tooth and is not rotated on the tooth. 
5. Crown is in proper occlusion and should not interfere with the eruption of the teeth. 
6. There should not be any high points when checked with articulating paper. 
7. The crown margin extends about 1 mm gingival to gingival crest. 
8. No opening exists between the crown and the tooth at the cervical margins. Crown 
margins closely adapted to the tooth and should not cause gingival irritation. 
9. Restoration enables the patient to maintain oral hygiene 
 
 
 
 
 
 
 
 
 
 
 
 

 




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