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cerec 3 d. / academy of fixed orthodontics

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Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.

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cerec 3 d. / academy of fixed orthodontics

  1. 1. GOOD MORNING www.indiandentalacademy.comwww.indiandentalacademy.com
  2. 2. AN OVERVIEW OF THE CEREC 3D CAD/CAM SYSTEM INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.comwww.indiandentalacademy.com
  3. 3. INTRODUCTION TECHNIQUE FEATURES EDITING SUMMARY www.indiandentalacademy.comwww.indiandentalacademy.com
  4. 4. THE INTRODUCTION OF COMPUTER-AIDED DESIGN / COMPUTER-AIDED MANUFACTURE (CAD/CAM) TECHNOLOGY HAS MADE STEADY INROADS INTO THE PRACTICE OF DENTISTRY AND REPRESENTS A MAJOR TECHNOLOGICAL BREAKTHROUGH. INTRODUCTION TO CEREC CAD/CAM SYSTEM www.indiandentalacademy.comwww.indiandentalacademy.com
  5. 5. HISTORY  1971: INTRODUCTION OF CAD/CAM TO THE DENTALPROFESSION  1979: HEITLINGER AND RODDER MILLED THE EQUIVALENT OF STONE MODEL USED BY A DENTAL TECHNICIAN TO THE CROWN  1980: MOREMANN AND BRANDESTINI TOOK A SINGLE PICTURE AND MILLED ONLY THE INTERNAL SURFACE OF THE INLAY  1985: MOREMANN AND BRANDESTINI INVENTED THE CEREC SYSTEM WHICH WAS LATER DEVELOPED AND INTRODUCEDTO THE DENTAL PROFESSION  1985: INTRODUCTION OF CEREC-1 SYSTEM  1994: INTRODUCTION OF CEREC-2 SYSTEM  2000: INTRODUCTION OF CEREC-3 SYSTEM www.indiandentalacademy.comwww.indiandentalacademy.com
  6. 6. Over the last 23 years, the CEREC system has evolved into a predictable method for restoring diseased or malformed teeth using computer-aided design/computer aided manufacture (CAD/CAM) technology. The initial investigators were working on a method called CERamic REConstruction, hence the name CEREC. Studies have demonstrated the accuracy and fit of the original CEREC restorations and rated them comparable to laboratory-fabricated restorations in terms of both fit and esthetics. www.indiandentalacademy.comwww.indiandentalacademy.com
  7. 7. SWITZERLANDwww.indiandentalacademy.comwww.indiandentalacademy.com
  8. 8. THE CEREC SYSTEM, DEVELOPED IN ZURICH, SWITZERLAND, IS ONE THAT IS COMMERCIALLY AVAILABLE AND PRACTICAL FOR THE DENTAL OFFICE AT THIS TIME. THIS CAD/CAM UNIT, WHICH WILL FABRICATE INLAYS, ONLAYS, ¾ CROWNS, 7/8 CROWNS AND VENEERS, WILL ALLOW THE CLINICIAN TO RESTORE THE TOOTH WITH AN INDIRECT, PERMANENT RESTORATION IN ONE APPOINTMENT, WITHOUT THE USE OF AN IMPRESSION OR THE ASSISTANCE OF A LABORATORY TECHNICIAN. www.indiandentalacademy.comwww.indiandentalacademy.com
  9. 9. THE COMPACT, MOBILE UNIT CONSISTS OF THREE COMPONENTS: A SMALL CAMERA, A COMPUTER SCREEN AND A THREE – AXIS – OF – ROTATION MILLING MACHINE. www.indiandentalacademy.comwww.indiandentalacademy.com
  10. 10. A FLOW DIAGRAM OF THE PROCESS OF MANUFACTURING A RESTORATION USING THE CEREC SYSTEM www.indiandentalacademy.comwww.indiandentalacademy.com
  11. 11. THE CAD/CAM CEREC SYSTEM HAS EVOLVED FROM THE: CEREC-1,WHICH FABRICATED ONLY MARGINALLY FITTING SINGLE AND DUAL SURFACE CERAMIC INLAYS. CEREC-2,WHICH SHOWED ADVANCES IN COMPUTING,UPGRADED SOFTWARE AND EXPANDED FORM OF GRINDING TECHNIQUE. www.indiandentalacademy.comwww.indiandentalacademy.com
  12. 12. CEREC-3 THAT CAN DESIGN WELL-FITTING INLAYS, ONLAYS, CROWNS, VENEERS ETC., IN A SINGLE VISIT. www.indiandentalacademy.comwww.indiandentalacademy.com
  13. 13. THE CEREC-3 TECHNIQUE MOUTH PREPARATION POWDERING SCANNING www.indiandentalacademy.comwww.indiandentalacademy.com
  14. 14. ADVANTAGES OF THE CEREC SYSTEM SINGLE APPOINTMENT NO IMPRESSION REDUCED MARGINAL GAP EXCELLENT POLISHING CHARACTERISTICS IMPROVED ESTHETICS LESS REDUCTION OF TOOTH STRUCTURE - BETTER PERIODONTAL HEALTH BONDED RESTORATIONS ENHANCE TOOTH STRENGTH PREPARATION, FABRICATION, CEMENTATION AND POLISHING NORMALLY ACCOMPLISHED IN 1 TO 1 ½ HOURS www.indiandentalacademy.comwww.indiandentalacademy.com
  15. 15. The latest system, CEREC 3D (Sirona, Charlotte, NC), has expanded on the concepts of computer imaging by utilizing three-dimensional viewing capabilities. This article provides an overview of the new system and outlines the steps required for fabricating a restoration using CEREC 3D. THE LATEST INCARNATION OF THE CEREC SYSTEM IS THE CEREC 3D, WHICH PROVIDES A VERSATILE, RELATIVELY SIMPLE, USER- FRIENDLY METHOD FOR FABRICATING ESTHETIC RESTORATIONS CHAIRSIDE WITHOUT INVOLVING A DENTAL LABORATORY. www.indiandentalacademy.comwww.indiandentalacademy.com
  16. 16. TECHNIQUE Fabrication using an optical impression. This impression can be accomplished in a single visit, eliminating the need for an elastomeric impression, an interim restoration, and payment of a laboratory fee. . www.indiandentalacademy.comwww.indiandentalacademy.com
  17. 17. The restoration is designed and carved form a solid block of porcelain or composite. These blocks are available in an assortment of shades that can be custom-stained and glazed. www.indiandentalacademy.comwww.indiandentalacademy.com
  18. 18. After the optical impression is made, restorations are designed on the computer using one of two modes, Correlation of Dental Database. Correlation utilizes a preoperative optical impression of a Wax-up of the unprepared tooth, while Dental Database utilizes the software’s virtual library of tooth morphology to create the anatomy and contours of the restoration. www.indiandentalacademy.comwww.indiandentalacademy.com
  19. 19. The prepared tooth is captured in a single optical impression, along with as many of the adjacent teeth as possible. Multiple optical impressions are possible for quadrant dentistry. From this impression, a “Virtual model” is created on the screen. To create proper occlusion more accurately, both modes can utilize an additional optical impression of a bite registration and create an antagonist tooth model www.indiandentalacademy.comwww.indiandentalacademy.com
  20. 20. www.indiandentalacademy.comwww.indiandentalacademy.com
  21. 21. Features : The 3D feature of the software allows the model to rotate 360 degrees in every plane. Creation of virtual die An alignment tool is visible on the screen to help reorient the image after rotation. The software also displays a view window on the screen that makes arrow icons available and allows the operator to view the preparation and subsequent restoration from six predefined views: occlusal, cervical, mesial, distal, buccal, and lingual. www.indiandentalacademy.comwww.indiandentalacademy.com
  22. 22. After creating a virtual die, the next step is to outline the margin line on the die. In CEREC 3D, the margins are created automatically by the software, reducing the chance of operator error. The software makes this a user-friendly process through an automatic margin finder. . www.indiandentalacademy.comwww.indiandentalacademy.com
  23. 23. The ability to view the die from any angle allows the dentist to correct the outline more accurately. Once the dentist is satisfied with the margin line, the software will design the restoration and place it on the die for viewing. The contact tightness should be evaluated and adjusted by clicking on the contact button, which also is displayed in the window. The purple line represents the height of contour, while the red, yellow, green, and blue areas all identify different degree of contact tightness. www.indiandentalacademy.comwww.indiandentalacademy.com
  24. 24. Editing : The restoration now can be modified in a variety of ways. Below the design window is an edit window, which offers the dentist six different tools: Edit, drop, Scale, Shape, Position, and Rotate. Clicking the edit button gives users the ability to modify the edit lines. Clicking the Drop button opens a new wax-up tool, allowing the user to add “drops of wax” to any area of the restoration and giving dentists the ability to alter a small area of the restoration by increasing the tooth’s contour in increments of 50 µn. www.indiandentalacademy.comwww.indiandentalacademy.com
  25. 25. Broad areas of restoration can be modified using the Scale tool; this feature allows dentists to add to the contact area in increments of 25 µm, making it possible to adjust contact tightness at the design stage, rather than having to overbuild and subsequently reduce the contact. The shape tool allows the operator to add or subtract material from any outlined area or any line drawn. The Rotate tool allows the operator to rotate the restoration on the preparation in an occlusal, cervical, mesial, distal, buccal, or lingual direction. The position tool can shift the restoration in any of the six directions. When either the Rotate or Position tools are used, the software compensates automatically so that no open margins are created.www.indiandentalacademy.comwww.indiandentalacademy.com
  26. 26. SUMMARY There are distinct advantages to using the CEREC 3D as compared with its predecessors (CEREC 1, CEREC 2, and CEREC 3). These advantages have decreased the learning curve that normally which are involved with an individual’s adaptation to new technology. The primary difference is the software, which requires far fewer steps than the CEREC 3 and makes it easier for the dentist to proceed. While time and research are necessary to demonstrate whether the CEREC 3D will provide restorations with better marginal adaptation than its predecessors, it is likely that more and more dentists will be attracted to the technology. There is no question that the software now is much more user-friendly and will decrease the learning curve dramatically.www.indiandentalacademy.comwww.indiandentalacademy.com
  27. 27. REFERENCES 1. FRANCOIS DIAME REKOW: CAD/CAM IN DENTISTRY. A REVIEW OF THE STATE OF THE ART. JPD, 1987; 58: 512- 516 ESTAFAN et. Al.,:. 2. DURET et. Al: CAD/CAM IN DENTISTRY. JADA, 1988; 117: 715- 721. 3. A NEW APPROACH TO RESTORATIVE DENTISTRY. FABRICATING CERAMIC RESTORATIONS USING CEREC CAD/CAM. CCED, 1999; 20: 555-560. 4. MORMANN WH, BINDL A. : THE CEREC 3-A QUANTUM LEAP FOR COMPUTER-AIDED RESTORATIONS INITIAL CLINICAL RESULTS. QUINTESSENCE INT., 2000; 31: 699-712 5. FRANKLIN GRACIA – GODOY: ALL CERAMIC CHAIRSIDE COMPUTER AIDED DESIGN. DCNA, APRIL 2002; 46:405- 426. www.indiandentalacademy.comwww.indiandentalacademy.com
  28. 28. THANK YOU…… For more details please visit www.indiandentalacademy.com www.indiandentalacademy.comwww.indiandentalacademy.com

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