Guided Flapless Surgery With Immediate Loading for the High Narrow Ridge Without Grafting

Author:

Schnitman Paul A.12,Lee Sang J.2,Campard Guillaume J.3,Dona Maria4

Affiliation:

1. Private Practice, Wellesley Hills, Mass

2. Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, Mass.

3. Private Practice, Nantes, France; Previously with Harvard School of Dental Medicine, Boston, Mass.

4. Harvard School of Dental Medicine, Boston, Mass.

Abstract

Computer guided implant treatment allows implants and associated restorations to be precisely placed during the same procedure directly through the gingiva with reduced postoperative complications and surgical time. When bone height is adequate but very narrow, the virtual guided sleeve is often placed too deeply into the ridge crest interfering with the seating of the surgical template. This case report of a patient exhibiting very narrow residual ridges due to severe resorption describes a new computer guided procedure using a single surgical template maintaining bone height and immediate restoration without a mucoperiosteal flap. The success of this technique is the result of innovative modifications in the software as well as instrumentation. Modifications include planning a different implant length virtually to raise the position of guide sleeves, alteration of drilling sequences, modifications of the start drill, incorporation of osteotomes, and use of an alternative implant seating mount. The combination of these methods allows for deeper site preparation and implant seating beyond the default settings, without any crestal bone reduction. These modifications not only make the guided concept possible for the entire preparation and seating procedures, but also allow for the slight removal of bone that would interfere with the implant seating through the surgical template without a mucoperiosteal flap. This new approach to computer guided surgery maintains prosthetic precision in the fabrication of a provisional restoration prior to implantation with minimal delivery adjustments using prefabricated conical abutments when placing implants at differing levels into the high narrow ridge.

Publisher

American Academy of Implant Dentistry

Subject

Oral Surgery

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