10. BEGO SEMADOS® S/RI SUB-DENT CLOSED TRAY IMPRESSIONS
9.2 Thermoplastic technique
10.1 Impression-taking for implants with Sub-Dent closed tray impressions
Positioning hole
Removing the healing post
Drill the positioning hole with a diameter of 1.2 or 1.5 mm.
Unscrew the healing post anticlockwise (tool: hexagon screwdriver 1.25 mm). Clean the implant interface to remove blood and tissue remnants before fitting the Sub impression post.
Positioning aid Insert straight wires with the diameter selected (see above) to aid positioning for the drill sleeves.
Fitting the impression post Position the Sub impression post on the implant so that the antirotation protection (Hex) engages. Secure by turning the L11 titanium screw clockwise (hand-tight / 10 Ncm) (tool: hexagon screwdriver 1.25 mm / slot screwdriver). Check for gap-free seating (radiographic check if necessary).
Alignment of drill sleeves Position the 1.6 mm and 2.5 mm drill sleeves. The basal surface of the sleeves are waxed with the model to prevent any ingress of resin during polymerisation. Fitting the impression post cap
Completion Fenestrate the thermoplastic template and polymerise the drill sleeves 2.5 with a self-curing resin (autopolymer).
Fit the impression post cap onto the Sub impression post so that the anti-rotation protection for the post audibly engages. Check for proper seating. Caution: The wings of the cap must be aligned parallel to the straight surfaces of the impression post.
Taking the impression Double sleeve template Drill template with 1.6 mm and 2.5 mm drill sleeves for pilot and initial drilling in the BEGO Semados® Implant System.
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We recommend taking the impression with a special tray. Block out pronounced undercuts in the dental arch (e.g. bridge pontics). To take the impression use a silicone or polyether impression material with high elastic recovery (hydrocolloids are not suitable for this purpose!).
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