All-ceramic crown replacement Hero
March 2, 2020
Dr. Gunnar Reich, DDS

Clinical Case: All-ceramic Crown Replacement

Dual-arch bite impression technique.

About the Case

Patient with a chipped all-ceramic crown on second molar: Impression made with 3M™ Impregum™ Super Quick Polyether Impression Material (Medium and Light Body) using the dual-arch bite impression technique.

The restorations were produced by MDT Nicole Freund, Tutzing, Germany.

Initial situation

Initial situation: Patient arrived with a largely chipped veneered zirconia crown on second lower molar.

Moisture management

3M™ Astringent Retraction Paste was used for moisture management and slight displacement of gingiva.


For single-unit indications, the dual-arch bite impression technique is a viable alternative to full-arch impressions. 3M™ Impregum™ Super Quick Light Body Polyether Impression Material was applied using 3M™ Intra-oral Syringe Purple.

Dual-arch bite impression technique

In parallel, the tray was loaded with 3M™ Impregum™ Penta™ Super Quick Medium Body Polyether Impression Material. The impression was done in the dual-arch bite (closed mouth) impression technique.

Final situation

Final situation: Precisely fitting monolithic 3M™ Lava™ Esthetic Fluorescent Full-Contour Zirconia restoration in situ. The crown was cemented with 3M™ RelyX™ Unicem 2 Self-Adhesive Resin Cement.

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