Sandwich bone graft for vertical augmentation of the posterior maxillary region: a case report with 9-year follow-up

Kenko Tanaka,Yoshihiro Kataoka,Irena Sailer,Tetsu Takahashi,Shinnosuke Nogami

doi:10.1186/s40729-017-0063-9

Kenko Tanaka, Yoshihiro Kataoka + Show 3 more

Open Access

https://doi.org/10.1186/s40729-017-0063-9

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Abstract

The loss of teeth followed by bone resorption often lead to defects in the alveolar ridge, making installation of dental implants difficult. Correction of such bone defects, especially lack of height of the ridge, is a difficult problem for all dental surgeons. This report describes the outcome of treatment after alveolar ridge augmentation in the atrophic posterior maxillary region via segmental sandwich osteotomy combined with placement of an interpositional autograft prior to placement of endosseous implants. The technique was successfully used to treat a deficiency in the vertical dimension of the posterior maxillary region. Six months after graft surgery, two implants were successfully placed in accordance with the original treatment protocol, and they survived for 9 years of follow-up.

Highlights

Osseointegrated implants for the replacement of missing teeth have recently become a routine treatment option [1, 2]
Any tooth loss may be followed by extensive resorption of the alveolar ridge, which usually makes implant placement difficult or impossible because of the lack of bone volume
The fixation system was removed, and two dental implants (4.5 × 11 mm) (Astra Tech AB, Mölndal, Sweden) were placed in accordance with the Discussion This paper reports on a segmental osteotomy procedure with an interpositional graft in the posterior maxillary region with 9 years of follow-up

Summary

Introduction

Osseointegrated implants for the replacement of missing teeth have recently become a routine treatment option [1, 2]. Any tooth loss may be followed by extensive resorption of the alveolar ridge, which usually makes implant placement difficult or impossible because of the lack of bone volume. There are a variety of defect situations with increasing complexity, ranging from fenestrations, to dehiscences, to both horizontal and vertical deficiencies, while combinations of these occur. Ridge augmentation techniques are available to effectively and predictably increase the width of the alveolar ridge in horizontal deficiencies. If vertical deficiencies are present, including in combination, the predictability of the techniques is usually substantially lower [3]. A significant bone defect is an anatomical limitation that can be overcome using different surgical techniques, including vertically guided bone regeneration. Several techniques are currently employed, using some combination of autologous bone or biomaterials, various vertical guided bone regeneration (GBR) procedures [4, 5], alveolar

Discussion

Conclusion