Tilotta Françoise, Lazaroo B, Gaudy J-F
Institut d'Anatomie, Centre Universitaire des Saints-Pères, Université Paris Descartes, Paris, France.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2008 Aug;106(2):210-6. doi: 10.1016/j.tripleo.2007.12.030. Epub 2008 Jun 11.
The aim of this study was to develop a new technique for maxillary sinus floor elevation through the crestal approach, using trephines and osteotomes with stops, and to assess the risk of sinus membrane lesion.
The study was performed on 30 heads removed from fresh nonpreserved cadavers with subsinus bone height >or=5 mm. The anatomic specimens were sectioned axially on a plane passing 1 cm below the infraorbital foramen, to be able to see and film the sinus floor covered by the membrane. A total of 112 implants were placed using this technique (48 without grafting material and 64 with grafting material).
Using this technique, we obtained a 4-6 mm elevation of the sinus membrane without impairing the mucosa. In the 13 cases where membrane lesions were observed, 9 had been performed without grafting material. The greater the initial subsinus bone height, the higher the elevation observed.
The success of this technique was due to stops on the trephines and osteotomes, which reduced the risk of invading the sinus cavity and made it possible to lift the membrane gently, fully controlling movements. This technique is indicated for large crests of type III or IV bone and with a minimal bone height of 5 mm.
本研究旨在开发一种通过牙槽嵴顶入路进行上颌窦底提升的新技术，使用带有限位装置的环钻和骨凿，并评估窦膜损伤的风险。
对30个从新鲜未保存尸体上取下的头部进行研究，其窦下骨高度≥5mm。将解剖标本在眶下孔下方1cm处的平面上进行轴向切片，以便能够看到并拍摄被膜覆盖的窦底。使用该技术共植入112颗种植体（48颗未使用植骨材料，64颗使用植骨材料）。
使用该技术，我们在不损伤黏膜的情况下使窦膜抬高了4 - 6mm。在观察到窦膜损伤的13例病例中，9例未使用植骨材料。初始窦下骨高度越高，观察到的抬高幅度越大。
该技术的成功归因于环钻和骨凿上的限位装置，这降低了侵入窦腔的风险，并使得能够轻柔地抬起窦膜，完全控制操作动作。该技术适用于III型或IV型骨的高大牙槽嵴且骨高度至少为5mm的情况。
