Clipping is a handy way to collect important slides you want to go back to later. We use cookies to help provide and enhance our service and tailor content and ads. 1) Clinical procedure for DIRECT TECHNIQUE This indirect-direct procedure has several advantages. Introduction to Fixed Prosthodontics Forth Year. TECHNIQUES FOR FABRICATION OF CUSTOMIZED PROVISIONAL RESTORATION 1) DIRECT TECHNIQUE 2) INDIRECT TECHNIQUE 3) DIRECT-INDIRECT TECHNIQUE The most commonly used method is the impression method. A direct technique for fabricating esthetic provisional restorations saves a clinician time and money. planned for definitive prosthesis. If you continue browsing the site, you agree to the use of cookies on this website. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. INDIRECT TECHNIQUES • Prepare tooth / teeth and make impression • Laboratory then fabricates provisional restoration(s) while patient waits OR • Laboratory fabricates shell provisional restoration before the patient comes for the tooth preparation appointment prostheses are used to assist in determination of Copyright © 2021 Elsevier B.V. or its licensors or contributors. The provisional restoration should be an intra-oral prototype for the proposed restoration. Attention to details in these procedures can be most rewarding to both the patient and the dentist. Fill putty matrix with Protemp, place onto typodont tooth, and remove putty matrix. Provisional restoration. Direct techniques usually require more chairside time compared to indirect techniques. the therapeutic effectiveness of a specific The technique involves fabrication of the interim restoration outside the mouth. In the direct technique the provisional is directly produced in the patient’s mouth, usually under use of an anatomic impression taken prior to the preparation, the so called preliminary impression (fig. Mix putty and fabricate matrix. Looks like you’ve clipped this slide to already. 16 Marginal leakage of a provisional restoration […] 1. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. You can change your ad preferences anytime. See our User Agreement and Privacy Policy. 1). See our Privacy Policy and User Agreement for details. In many instances the provisional restorations will be removed … Esthetics, stabilization and/or function for a A properly fabricated provisional restoration is important in achieving a successful indirect restoration. The most common direct dental restoration are fillings for cavities. (The ball should fill at least 50% of the pontic space). Seat the matrix over the teeth. A straightforward approach to fabricate provisional restorations for veneer preparations involves the use of a silicone matrixa developed from the diagnostic mock-up (Figure 1 and Figure 2).6,7 The silicone matrix is filled with a self-curing bisacryl materialb,c and seated intraorally over the prepared teeth. H. B. Dumbrigue, “Composite indirect-direct method for fabricating multiple-unit provisional restorations,” Jou… Fabrication of provisional restorations is an important procedure in fixed prosthodontics. protect the tooth from microleakage Accurate margins of an extracoronal provisional restoration are important because they Indirect-direct technique (Shell provisional): A combination of the two techniques is proposed to provide a relatively atraumatic means to achieve the most accurate fitting interim prosthesis. The technique produces a custom made preformed external surface form of the restoration but the internal tissue surface form if formed by the underprepared diagnostic casts. A preoperative wax‐up should be fabricated, followed by fabrication of a transparent polyvinyl siloxane (VPS) matrix in a clear plastic prefabricated tray with retentive holes. Marginal ad- aptation is critical in maintaining a seal around the nish line from bacterial invasion. My ch… The small irreversible 396 APRIL 1988 VOLUME 59 NUMBER 4 DIRECT PROVISIONAL RESTORATION TECHNIQUE hydrocolloid section can be expanded slightly as it is placed over the teeth for ease of insertion and can also be opened out slightly on the buccal or lingual to check for polymerization. Prepare and dispense Protemp provisional material. A technique has been presented for the efficient fabrication of a temporary or provisional restoration with emphasis on esthetics, proper contour, and marginal integrity. By continuing you agree to the use of cookies. Definition A fixed prosthesis, designed to enhance Esthetics, stabilization and/or function for a limited period of time, after which it is to be replaced by a definitive prosthesis. Direct Dental Restorations Direct tooth restorations are those that can be done in one procedure in one dentist office visit. Fabrication of provisional restorations using the indirect technique eliminates the problems associated with the direct technique and also has the advantage that it can be partially delegated to auxiliary personnel []. Conclusion: This technique will help the clinicians to enhance the quality of the provisional restorations, to prevent entrapment of bubbles, improve marginal precision and prevent seating error. 4.The direct technique allows for superior access and enhances the time and convenience of making multi-unit bridges or crowns in difficult-to-access areas. limited period of time, after which it is to be Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The type of matrix material selected should be convenient to use, cost-effective, and provide a smooth surface, which will allow the provisional material to cure with a smoother surface that requires less polishing once the material has cured.
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