CASE REPORT - Seating A Crown on Tooth #10

Daniel S. Kim, DDS demonstrates seating a crown using the ContacEZ Restorative Strip System.

 Fig. 1) The temporary crown was removed from the tooth #10 prep.

Fig. 1) The temporary crown was removed from the tooth #10 prep.

 Fig. 2) The e.max crown was placed onto Tooth #7.

Fig. 2) The e.max crown was placed onto Tooth #7.

 Fig. 3) With the abrasive side facing the crown, the ContacEZ Black Diamond Strip was inserted in the mesial and distal and passed buccolingually a few times to determine the side with heavier proximal contact. The side where greater pressure is felt against the strip is where the proximal contact is heavier.

Fig. 3) With the abrasive side facing the crown, the ContacEZ Black Diamond Strip was inserted in the mesial and distal and passed buccolingually a few times to determine the side with heavier proximal contact. The side where greater pressure is felt against the strip is where the proximal contact is heavier.

 Fig. 4) Heavier contact was detected on the distal side, and so the Black Diamond Strip was passed 5-6 more times through the distal interproximal space. This process (Fig. 3 & 4) is then repeated on the mesial and distal interproximal spaces until equal light resistance on the Strip is felt on both sides. Note that the central opening of the Strip allows for easy access with cotton pliers to securely hold the crown in place. When this light resistance is achieved, the ideal proximal contact adjustment of the crown is complete and ready for cementation.

Fig. 4) Heavier contact was detected on the distal side, and so the Black Diamond Strip was passed 5-6 more times through the distal interproximal space. This process (Fig. 3 & 4) is then repeated on the mesial and distal interproximal spaces until equal light resistance on the Strip is felt on both sides. Note that the central opening of the Strip allows for easy access with cotton pliers to securely hold the crown in place. When this light resistance is achieved, the ideal proximal contact adjustment of the crown is complete and ready for cementation.

 Fig. 5) The x-ray shows superb marginal fitting.

Fig. 5) The x-ray shows superb marginal fitting.

 Fig. 6) The crown was cemented firmly into place, and the dual cure resin cement was light cured.

Fig. 6) The crown was cemented firmly into place, and the dual cure resin cement was light cured.

 Fig. 7) Excess resin cement is removed from around the crown with an explorer, but harder to reach cement remains in the interproximal spaces.

Fig. 7) Excess resin cement is removed from around the crown with an explorer, but harder to reach cement remains in the interproximal spaces.

 Fig. 8) The ultra-thin White Serrated Strip, is passed through both mesial and distal interproximal spaces to cut and clean out the trapped resin cement without opening the contact.

Fig. 8) The ultra-thin White Serrated Strip, is passed through both mesial and distal interproximal spaces to cut and clean out the trapped resin cement without opening the contact.

 Fig. 9) The Gray Final Polishing Strip is then used, both to confirm Interproximal Relief and to polish the surface of the crown to a natural finish.

Fig. 9) The Gray Final Polishing Strip is then used, both to confirm Interproximal Relief and to polish the surface of the crown to a natural finish.

 Fig. 10) Dental floss was snapped into and out of the contacts with firm resistance, confirming the ideal proximal contacts. Note that the ContacEZ Gray Strip, which is thinner than some floss, passed through the interproximal space with light resistance.

Fig. 10) Dental floss was snapped into and out of the contacts with firm resistance, confirming the ideal proximal contacts. Note that the ContacEZ Gray Strip, which is thinner than some floss, passed through the interproximal space with light resistance.

 Fig. 11) Occlusion was checked using articulating paper and required minimal or no adjustment. The patient said that the crown felt natural and that there was no discomfort or pressure.

Fig. 11) Occlusion was checked using articulating paper and required minimal or no adjustment. The patient said that the crown felt natural and that there was no discomfort or pressure.

 Fig. 12) The x-ray shows the complete marginal seating of the crown after cementation. Using the ContacEZ Restorative Strip System easily produces complete marginal seating with every crown.

Fig. 12) The x-ray shows the complete marginal seating of the crown after cementation. Using the ContacEZ Restorative Strip System easily produces complete marginal seating with every crown.