Case Study

Interproximal Restorations using Garrison's Wide Prep Ring

Dr. Filip Pezer

Case Details

Interproximal caries is the most common type of dental pathology and therefore interproximal fillings in the posterior area are the most common restorative procedures. Restoring adequate cervical contour and tight interproximal contacts are of utmost importance for long term stability of such restorations. Open contacts and cervical overhangs lead to development of secondary caries and periodontal pocket.

Modern sectional matrices, interproximal wedges and ring systems like the Garrison sectional matrix system make the procedures more predictable and allow dental practitioners to restore such cavities easily.

The presented case is removal of the interproximal caries with deep cervical margin and wide buccal and palatal extensions. After the cavity preparation and isolation with the rubber dam, Garrison matrix with extension, Blue (small) wedge and Wide Prep (green) ring were placed. The wide extensions of the ring allow to restore adequate buccal and palatal contours of the tooth. The sectional matrix is easily shaped to restore proper anatomy and tight contacts. The rest of the cavity is filled with respect of the simplified tooth anatomy. Rough polishing and contouring were done under the rubber dam isolation. After the removal of the rubber dam the procedure ends with fine polishing and occlusal corrections.

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Fig. 1 Tooth 25 with cavitation mesial, occlusal view, initial situation
Fig. 1 Tooth 25 with cavitation mesial, occlusal view, initial situation

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Fig. 2 Tooth 25 with cavitation, mesial buccal view, initial situation
Fig. 2 Tooth 25 with cavitation, mesial buccal view, initial situation

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Fig. 3 Prepared cavity with reduced palatal surface profile, subsequently polished distal tooth surface 24
Fig. 3 Prepared cavity with reduced palatal surface profile, subsequently polished distal tooth surface 24

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Fig. 4 Isolation of the quadrant with rubber dam
Fig. 4 Isolation of the quadrant with rubber dam

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Fig. 5 Placed Garrison premolar matrix and green ring, before etching and adhesive procedure
Fig. 5 Placed Garrison premolar matrix and green ring, before etching and adhesive procedure

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Fig. 6 Appearance of restoration with rough polishing
Fig. 6 Appearance of restoration with rough polishing

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Fig. 7 Final polishing, occlusal view
Fig. 7 Final polishing, occlusal view

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Fig. 8 Final polishing, buccal view, restored contact surface and preserved mesial tooth profile
Fig. 8 Final polishing, buccal view, restored contact surface and preserved mesial tooth profile

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Fig. 9 Before/after occlusal
Fig. 9 Before/after occlusal