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International Journal of Implant Dentistry
Fig. 3 | International Journal of Implant Dentistry

Fig. 3

From: Implant survival after graftless sinus floor augmentation in highly atrophic maxillae: a randomized controlled trial in a split mouth study

Fig. 3

Schematic drawing of implant placement. a After 6 months sufficient bone gain was apparent. b Bone biopsies are taken with a trephine drill. c Implants are inserted at the same place where the bone biopsies were taken: three on each side. d After 6 months, the implants are exposed and prosthetic rehabilitation is established

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