Dental implants,Implant overdentures & impression techniques .
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The document discusses dental implants, focusing on distinctions between tooth-supported and implant-supported restorations, with details on maintenance, cost, and longevity. It further covers implant overdentures, describing their types, indications, and the relevant impression techniques for implant-supported restorations. Osseointegration, first discovered by Branemark, is highlighted as a critical aspect of implant stability.
Dental implants,Implant overdentures & impression techniques .
- 1. Dental Implants By Mohamed Mahmoud Abdul-Monem Assistant lecturer Dental Biomaterials Department Faculty of Dentistry Alexandria University
- 2. Content 1. Difference between tooth-supported and implant supported restoration 2. Implant Overdentures 3. Impression techniques for implant supported restorations
- 6. Osseointegration • The phenomenon of osseointegration of titanium implants was discovered by the Swedish surgeon, Branemark in 1952 . • Functional ankylosis (bone adherence), where new bone is laid down directly on the implant surface and the implant exhibits mechanical stability .
- 8. Materials used as dental implants
- 9. 1.Difference between tooth supported and implant supported restorations
- 12. Tooth-supported restorations Implant-supported restorations Preservation of tooth structure NO YES Transmission of forces to bone Less More (if not performed properly) Bone loss More (Pontic area) Less (if performed properly) Maintenance by patient Difficult Easy Time of fabrication Short Long Cost less expensive More expensive Service life 7-10 years Up to 20 years
- 14. Implant supported restorations Implant- supported restorations Fixed Screw- retained Cement - retained Removable Implant overdentures Hybrid
- 15. Fixed implant supported restorations Screw retained Cement retained
- 18. • A removable implant overdenture is a prosthesis which is removable by the patient and is supported or retained by dental implants . • The prosthesis has to be removed for the purpose of cleaning around the abutments
- 19. Types of implant overdentures 1.Tissue-implant supported – In the mandible a minimum of 2 and in the maxilla a minimum of 4 implants are indicated for this type of an overdenture • The overdenture is mainly tissue- borne. • The attachments give retention to the prosthesis. • In eating, the ridge receives masticatory forces. • The tissue supported implant overdenture is useful in cases where the presenting problem is that of denture movement.
- 20. 2.Fully implant supported • A minimum of 4 implants in the mandible and 4 to 6 in the maxilla. • During mastication, the attachment assembly transfers all the masticatory forces to the supporting implants. • This type of implant overdenture is particularly appropriate for patients who present with considerable functional difficulty and pain while functioning on their dentures.
- 22. The components available for retaining overdentures are: 1.Bar with clips 2.Studs ( ball anchor)
- 23. Types of overdentures Tissue/Implant supported Fully implant supported Mandible Minimum 2 implants Minimum 4 implants Maxilla Minimum 4 implants Minimum 4-6 implants Masticatory forces To Tissues To Implants Indication Denture movement Pain
- 24. 3.Impression techniques for implant supported restorations
- 25. Healing abutment
- 27. Implant vs Implant analogue
- 28. Final abutments
- 32. Implant level impression Pick-up (open tray)
- 35. Gingival mask
- 38. Closed tray (Transfer type)
- 40. Abutment level impression technque Direct
- 44. Indirect
- 45. Indirect