PREMIER ISO 9001:2008 CERTIFIED DENTAL CENTRE
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Fatigue strength is the maximum force an implant/abutment combination can survive for at least five million cycles. Nobel Biocare developed a protocol for testing fatigue strength in 1992. Today, the International Standard for single-post endosseous dental implants fatigue testing (ISO 14801) is used, which is very similar to the original Nobel Biocare protocol.
ISO 14801 protocol:
• Implant/abutment combinations mounted in 30° off-axis orientation
• Cyclic force applied (frequency 14 Hz)
• 5 million cycle duration
The maximum insertion torque for NobelActive™ was established at 70 Ncm, based on clinical study results(1):
• Implants were placed with varying insertion torque levels
• No correlation was found between complications and insertion torque at these levels, when compared (Unpublished data)
NobelActive™ was designed with high torque strengths in mind:
• 282 Ncm maximum implant torque strength for NobelActive™ Ø3.5
• 452 Ncm maximum implant torque strength for NobelActive™ Ø4.3
A CASE WITH NOBEL ACTIVE
Implantation immediately after tooth extraction offers several advantages for both patients and clinicians, including shorter treatment time, less bone resorption, fewer surgical sessions, and easier definition of the implant position. It makes the use of longer implants possible due to the preservation of ridge height and width. Moreover, it provides better opportunities for osse-ointegration because of the healing potential of the fresh extraction socket.
The long-term success of osseointegrated implants in the treatment of completely and partially edentulous patients with a sufficient amount and quality of bone has been well documented. A healing period of at least 3-6 months has been recommended between tooth extraction and implant placement, during which the treatment may be delayed and the alveolar bone resorption may result in a thinner alveolar for implant placement. The immediate placement of implants into fresh extraction sockets can offer advantages over the delayed implant placement and should have the potential to increase the patients' acceptance of the procedure.In this way, functional replacement and esthetic maintenance or enhancement is accomplished spontaneously. The immediate implant procedure preserves bone and soft tissue structures necessary for implant placement.In contrast, as to delayed implant placement, pressure from prosthetic restorations during the healing time may decrease alveolar bone width and height, thereby decreasing the bone volume required for proper implant placement.
In summary, the immediate placement of implants into extraction sockets seems to be a safe and predictable method, the main advantage of which is obtainments of time and bone volume.
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