NAZALUS IMPLANTS
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In a severely resorbed maxilla, Nazalus implants may be recommended in order to use the maxillary bone surrounding the nose.
The implantation site begins in the alveolar bone of the premolar and ends in the bone separating the maxillary sinus and the nasal cavity. The specific implants must be very long to cross the sinus and must be tilted at 24°. Therefore, the prosthetic axis of the implant is designed at 24° to the body of the implant (Co-Axis® concept).
The placement position is shown in the figures below. It is important to note that bone grafting is recommended when the thickness of the alveolar bone is less than 3mm.
Site Preparation Sequence
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Begin site preparation with a round bur or equivalent drill bit.
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If the socket has more than 3mm of good bone, use the Ø2x24mm pilot drill to drill the sockets, into and through the sinus, engaging the lateral nasal wall.
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The 24mm depth gauge can be used to feel the depth of the hole for implant selection.
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Drill to final depth with D-33TP final drill bit using slow speed (350rpm).
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Place the implant according to standard Co-Axis® implant placement procedures, ensuring that the prosthetic axis of the implant is properly aligned.
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NB: If the alveolar bone is less than 3mm thick or is of poor quality, a bone graft should be applied. Open a window in the side wall of the sinuses. Gently reflect the Schneider's membrane and insert a bone graft into the sinus.
