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Implant basics simple introduction
- 1. Marwan M. El Said BDS. MSc.
- 3. tapered screw shaped implant
- 4. Implant design • Macroscopic Features: Body Design Thread geometry Platform Crest module and abutment connection Abutment • Microscopic Features implant materials surface morphology surface coatings
- 5. tapered screw shaped implant Advantages of the tapered form implant : allow for placement in narrow spaces better stability for immediate placement better distribution of compressive forces.
- 6. • Tapered screw implants can be : Two piece implant Single piece implant
- 10. Thread geometry • understanding of the forces an implant might endure is essential to the concepts of implant thread geometry • three main types of load an implant may endure at the interface between the implant surface and bone. • These three forces are compressive, tensile and shear
- 11. Forces distribution Tensile and shear forces Compressive forces unfavorable favorable
- 12. • Thread pitch refers to the distance from the center of the thread to the center of the next thread . • 𝒑𝒊𝒕𝒄𝒉 = unit length 𝒏𝒖𝒎𝒃𝒆𝒓 𝒐𝒇 𝒕𝒉𝒓𝒆𝒂𝒅𝒔
- 13. • If implant length is the same, a smaller pitch means there are a greater amount of threads
- 14. • Implants with more threads (i.e. smaller pitch) were found to have a higher percentage of BIC and increase resistance to vertical forces
- 15. • The lead is the distance from the center of the thread to the center of the same thread after one turn.
- 16. • this could be the distance the implant would advance if it was advanced one turn
- 17. • implant could have a single ,double or triple thread design in which two or three threads run parallel to each other
- 18. • maintain a high level of resistance to vertical forces and level of BIC at the same time as allowing for increased speed of implant insertion.
- 19. • Thread depth the distance from the tip of the thread to the body of the implant
- 20. • A shallow thread will be easier to insert into dense bone • A deep thread will allow for much greater primary stability specifically for situations such as soft bone or immediate implant sites
- 21. • Thread width is the distance in the same axial plane between the coronal most and the apical most part, at the tip of a single thread.
- 22. • Thread shape describes the geometry of the implant thread • five types of thread geometry V-shape, square, buttress, reverse buttress and spiral
- 27. Implant platform
- 28. Implant platform
- 37. Implant abutment connection • External hex • Internal hex • Mores taper
- 47. Abutments
- 66. Implant placement and loading protocol
- 70. Implant surgery Two stage surgery First stage implant placement Second stage placement of healing abutment One stage surgery The implant is exposed from day one
- 74. Implant surgery Flapless More conservative Better soft tissue healing Less bone loss More esthetic outcome Less visibility Risk of bone dehiscence or fenestration More sensitive technique Flap elevation More visibility Better irrigation Bone augmentation Complete wound closer Bone resorption More healing time Risk of flap dehiscence
- 90. Implant placement delayed 3 to 6 months after tooth extraction Early 1 week to 2 months after extraction Immediate At the same time of tooth extraction
- 91. Implant loading delayed 3 to 6 months after implant placement Early from 2 weeks to 2 months of implant placement Immediate within 1 week of implant placement
- 92. •primary stability achieved by direct contact between implant body and threads with bone during implant placement. •Secondary stability As healing progresses, the original bone around the implant surface remodels and areas of new bone emerge at the implant surface. The remodeled bone contact and new bone contact result in secondary or biologic stability.