Dental Tribune U.S. Edition

Dental Tribune U.S. Edition | October 2014 a19 Ad LAB INDUSTRY Clinical Fig. 12: Final structure’s control with masks. Fig. 11: Vestibular metal structure view. Fig. 13: Final structure's control with lingual masks. Fig. 14: Prosthesis final view before retentive caps insertion. Fig. 15: Retentive caps placed with insertion tool. Fig. 16: Inserted caps. Fig. 17: Completed prosthesis. Fig. 18: Reduced-diameter green caps. Fig. 10: Structure testing following insertion of retentive components. in position (Fig. 4). After the Ot Box Classic boxes were placed in position, the available spacewasmeasuredtocompletetheproce- dure with the lingual and vestibular masks (Fig. 5). The Ot Box Special boxes were then tested together with the masks to deter- mine if adequate space remained available. Once it was decided to use the Ot Box Special with the connectors, the castable components were connected with resin to createthestructureusingthesiliconmasks (Fig. 6). After the structure was completed, sprue followed, keeping the structure over the model (Fig. 7). The sprue procedure was completed us- ing castable pivots and a special metal sta- bilizingbar.Removalofthespecialbarfrom themodelwascompletedafterafusionand investment procedure. The structure was cleared from the investment (Fig. 8). Then, to verify that the procedure was successful, a test was run over the model (Fig. 9). The structure was cleaned and modeled, and the retentive components were inserted and tested over the model (Figs. 10, 11). The masks were used again to reconfirm that the available space was sufficient (Figs. 12, 13). Modeling proceeded once the opaque process was completed (Fig. 14). Use of the Rhein’83 special tool for the retentive caps insertion enabled a simple and safe insertion of the proper prosthetic components (Figs. 15, 16). The general struc- ture was now completed and ready to be delivered to the clinic (Fig. 17). Once the test inside the oral cavity was completed, the pink retentive caps were replaced with the reduced-diameter green caps (Fig. 18) to im- prove the retention — providing optimal stabilitytotheprosthesisandabettersense of comfort to the patient. As mentioned, the initial situation was functionallycompromisedbytheretentive components. But the quality of the repair materials enabled optimal final results, both esthetically and functionally. Time and costs were reduced thanks to proper use of the Rhein’83 solutions. The castable cap boxes were fundamental for the pro- cedure and for the construction of the bar. The components satisfied the patient’s and dentist’s expectations. Proper use of the Rhein’83 components added a relevant val- ue to the dental laboratory work. Carlo Borromeo founded Dental Laboratory Borromeo in Italy in 1988, specializing in the construction of prosthesis for implants using CAD/CAM. He collaborates with Nobel Biocare Procera, Dental Wings, Rhein’83 and other companies to improve his expertise with their materials. He is a highly published industry author and presents and participates in many dental lab courses and conferences. “ PROSTHESIS, page A18

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