PYRAMIDION — ultra-short pyramid-shaped expandable implants offers clinicians a simple, safe and effective alternative to bone augmentation procedures in both the maxilla and the mandible.
Thanks to multiple bio-mechanical features, the PYRAMIDION performs as a conventional longer implant (≥ 10 mm):
Four Titanium membranes spread out during expansion to enlarge the outer surface and the total bone to-implant contact area.
Unique, error-free expansion mechanism creates the pyramid shape (instead of the standard cylinder shape) to allow for better distribution of chewing forces on the implant structure.
Patented Snap-Back mechanism prevents over expansion of the implant’s apical area and excess pressure to the surrounding bone
Achieving high stability with an ultra short implant, following the natural anatomy (Pear shape-like), requires an implant that has a narrow neck with a wide base.
The Pyramidion implant is designed to meet these requirements. A mild change in apical diameter, which occurs only at the base of the implant – keeps Pyramidion within the range of popular implant coronal diameters.
This change is NOT only a change in diameter, it is also a change in shape: from cylindrical and a round base to a pyramid and square base respectively.
The change of size and shape results in mild bone compression and higher initial stability.
This superior apical fixation enables maximal utilization of the supporting bone hence improving the implant’s mechanical performance under immediate loading conditions, with subsequent quicker treatment and faster “time to teeth”.
The Pyramidion expansion mechanism ensures two critical aspects: complete seal and controlled bone compression.
These two aspects are addressed by the mechanism’s design as a “push” mechanism:
An internal element is moved apically by an externally attached expansion tool, pushing four wing-shaped elements outward and creating the desired pyramid shape.
The internal expansion element then reaches a stopping point where it is snapped back and then locked. This mechanism prevents overexpansion of the implant’s apical area and excess pressure to the surrounding bone, while at the same time preventing the internal moving element from being pushed out of the implant and obstructing the passage from the oral cavity to the apical portion of the implant.
In addition to the vast clinical experience with Pyramidion implants, in-vivo and in-vitro studies were conducted, aimed to research two key concerns related to the implant’s mechanism:
1) potential damage to the bone around the expanded areas; and
2) potential leakage through the expansion mechanism to the apical peri-implant area.
According to the results of these studies, no bone damage occurred, and inflammation and necrosis were completely absent from the surrounding bone following expansion, and absolutely no leakage through the mechanism was detected.
Slightly conical Pyramidion implant is placed similarly to a conventional implant.
Using the Pyramidion expansion tool, the apical section of the implant is gradually expanded - enhancing surrounding bone density and closing micro-gaps.
Thanks to a unique internal mechanism, the apical portion of the Pyramidion implant folds slightly inward after reaching maximum expansion, reducing the total pressure on the surrounding bone.
Minimal Cortical Bone Loss
Popular implant coronal diameter designed to save cortical bone.
Preparation of the bone bed with a wide-diameter drill, to minimize stress during implant placement.
Proven prevention of bacterial leakage.
Primary Stability at
Atrophic Trabecular Bone
Maximal stability of twice the torque during implant placement.
Contact ostegenesis through application of limited pressure on the surrounding bone.
Increased bone-to-implant contact area.
Enlarged apical surface.