Frasaco ST-5K-421 – Transparent strip crowns, lower right lateral incisor, size 421, pack of 5
Frasaco strip crowns are elastic, thin and easy-to-cut celluloid crowns; in the transparent execution they transmit polymerisation light. They are used as moulds for temporary restorations on preparations and as matrices for restoring corners and edges, also with composites. Class I medical device for single use; never leave in the mouth for more than 30 days. Each ST-5K refill box contains 5 transparent crowns of the same size.
Reference ST-5K-421: lower right lateral incisor, size 421. Frasaco numbering: 1st digit = quadrant, 2nd = tooth position, 3rd = size.
Technical specifications
| Tooth | 42 – incisive latérale inférieure droite |
| Size | 421 |
| Size range for this tooth | 420 à 422 |
| Pack | Boîte de recharge, 5 couronnes de la même taille |
| Material | Celluloïd, transparent (perméable à la lumière de polymérisation) |
| Included in assortments | ST-FK174, ST-FBK 58 |
| Regulatory status | Dispositif médical classe I, usage unique |
| Maximum time in mouth | 30 jours |
| Country of origin | Allemagne (DE) |
| Customs code (Intrastat) | 90212900 |
Frequently asked questions
How do I read the reference?
1st digit = quadrant, 2nd = tooth position, 3rd = size. ST-5K-421 is therefore tooth 42 (lower right lateral incisor), size 421.
How long can a strip crown stay in the mouth?
Never more than 30 days. If it stays for a few days, its gingival edge must be no deeper than 1 mm inside the sulcus.