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ePaper created 2015-03-06, 09:14:48 | version 1.33.01
32 I I industry report _ direct resin restorations tweezers, which are placed in the hole on the matrix itself making insertion easier (Fig. 11). After checking proper assembly, the wedge and the transparent tines of the V4-Ring are inserted (Figs. 12–15). This allows light to pass through for 360° polymerisation. After the matrix has been positioned, ENAetch is applied for 30 seconds evenly with a brush to distribute the etching agent (Figs. 16 & 17), and the area is washed with water for 30 seconds and with 0.2 % chlorhexidine digluconate (Fig.18).3 Ena Bond is then applied for 60 seconds (Fig.19). Itmustbepolymerisedfor40seconds4 (Fig.20)and at the end ENAseal is brushed on for 30 seconds (Figs. 21–22).5 Finally the cavity is polymerised again for 40 seconds (Fig. 23).6 Every step has to be done properly, from carious lesion removal to cavity surface fin- ishing. Any approximation may compromise long-term outcome and restoration aesthetics.7 With adhesive techniques it is mandatory to respect all protocols in order to prevent sec- ondary tooth decay and ensure a long lasting restoration.8 Fig. 7_Polishing enamel with a rubber red on a blue ring hand piece. Fig.8_Tooptimisecavitypreparationat themarginallevel,metalstripsareused. Fig. 9_To optimise cavity preparation at the marginal level, paper strips are used. Fig.10_Cavitypreparationiscompleted. Fig. 11_Once the preparation is finished matrix V-Ring 4 is placed with its proper tweezers, which are placed in the little hole on the matrix, making its insertion easier. cosmeticdentistry 1_2015 Fig. 9 Fig. 10 Fig. 11 Fig. 12 Fig. 7 Fig. 8 CDE0115_30-34_Vanini 26.02.15 10:35 Seite 3 CDE0115_30-34_Vanini 26.02.1510:35 Seite 3