OVERDENTURE.pptx implant supported prosthesis

implant supported prosthesis : Fixed implant prostheses offer high predictability and patient satisfaction
Fixed implant prostheses are reported to offer higher patient satisfaction and quality of life when compared to other treatment options
The distance available between the anterior and posterior implants determines a prosthesis' cantilever length
Screw-retained designs offer biological and maintenance advantages in comparison to cement-retained solutions.A fixed prosthesis offers benefits from both a functional and esthetic point of view and may be regarded as quite similar to a patient's own natural dentition when compared to alternative treatment options such as complete dentures or implant overdentures. There is a significantly reduced bulk to a fixed prosthesis which is perceived to be more comfortable and since no mucosal support is needed, patients can chew with greater force and eat a wider range of foods. Fixed prostheses lead to a gain of posterior mandibular bone because of the adaptation to higher chewing forces whereas hinging overdentures lead to bone loss in the posterior regions. Patients report enhanced social confidence as a result and reported quality of life satisfaction scores are highest with a fixed implant prosthesis. With all fixed prostheses, the contour should be carefully shaped in order to allow for oral hygiene access as these prostheses cannot be removed by the patient for cleaning. When a fixed prosthesis is close to the oral mucosa, the prosthesis' surface should be smooth and highly polished.This prosthesis type shows excellent clinical long-term results and until recently it has been the primary type of fixed implant prosthesis provided to patients. A metal framework is fabricated which attaches to the implants and which has been designed to incorporate mechanical elements to help retain acrylic resin and artificial denture teeth. The current technology also uses CAD/CAM to fabricate precision-fit frameworks. The final prosthesis is usually screw-retained and is relatively easy to retrieve if denture teeth or acrylic resin need to be repaired.
These prostheses simulate a typical ceramo-metal bridge made for natural teeth in the sense that a substructure is fabricated to provide both the attachment to underlying implants as well as an ideal porcelain thickness for long term durability. A full-contour wax-up of the framework is done. It is then cut back to create the ideal veneering ceramic thickness and then it is scanned. The scanned image is employed in a CAM process to create a metal framework from a ceramic compatible alloy. In some situations, the wax up may be cast in a ceramo-metal alloy but full-arch precision of fit is more difficult to obtain than with a CAM substructure.

A metal-ceramic prosthesis shows very good esthetics, as ceramic is more life-like than acrylic resin. One disadvantage of a metal-ceramic prosthesis is that ceramic chipping or fracture may occur and may be difficult to repair. hi

1. CASE - IMPLANT SUPPORTED OVERDENTURE

2. EXTRAORAL VIEW 67 YEAR/ MALE C/C : MISSING TEETH IN UPPER AND LOWER JAWS

3. PRE OPERATIVE - OPG - Partially edentulous maxilla with completely edentulous mandible

4. PRIMARY CASTS OF UPPER AND LOWER ARCH

5. CUSTOM TRAYS FOR UPPER AND LOWER ARCHES

6. JAW RELATION RECORD FOR UPPER AND LOWER ARCH ARTICULATION OF THE CASTS ON A SEMI ADJUSTABLE ARTICULATOR

7. PUTTY INDEX WAS THE FABRICATED USING THE PROCESSED MANDIBULAR DENTURE

8. DUPLICATED DENTURE CONVERTED INTO A SURGICAL SPLINT FOR IMPLANT PLACEMENT IN MANDIBULAR ARCH.

9. PRE OP PHOTOS BEFORE IMPLANT PLACEMENT

10. 3 IMPLANTS PLACED IN LOWER ARCH WITH THE HELP OF THE SPLINT AND VERIFIED BY RVG

11. PATIENT RECALLED AFTER 4 MONTHS FOR STAGE 2 AND IMPLANT POSITION AND CONDITION VERIFIED ON IOPAR

12. GINGIVAL COLLAR FORMATION AROUND THE IMPLANTS AFTER PLACING GINGIVAL FORMERS FOR 1 WEEK

13. FOR IMPRESSION PROCEDURE OPEN COPING SPLINTING METHOD USED AND IMPLANT COPINGS WERE SPLINTED USING A DENTAL FLOSS FOLLOWERD BY PATTERN RESIN

14. IMPRESSION USING ADDITION SILICONE

15. O-RING ATTACHMENTS FOR OVERDENTURE

16. ATTACHMENTS INSERTED AND VERIFIED FOR PARALLELISM

17. MARKINGS ON DENTURE FOR MAKING HOLES FOR ATTACHMENTS INSERTION

18. A PIECE OF RUBBER DAM SHEET WAS USED FOR EASY INSERTION OF DENTURE THROUGH THE ATTACHMENTS DENTURE INSERTED THROUGH THE ATTACHMENT

19. RPD WAS INSERTED IN THE UPPER ARCH TO REPLACE MISSING TEETH

20. COMPLETE REHABILITATION OF UPPER AND LOWER ARCH USING RPD AND IMPLANT SUPPORTED OVERDENTURE RESPECTIVELY

21. POST OP - EXTRAORAL PHOTOGRAPHS