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. 2017 Dec;3(1):20.
doi: 10.1186/s40729-017-0063-9. Epub 2017 May 19.

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

Kenko Tanaka  1   2 , Irena Sailer  3 , Yoshihiro Kataoka  4 , Shinnosuke Nogami  4 , Tetsu Takahashi  4
Affiliations

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

Kenko Tanaka et al. Int J Implant Dent. 2017 Dec.

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.

Keywords: Bone graft; Interpositional bone graft; Long-term follow-up; Sandwich graft.

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Figures

Fig. 1
Fig. 1
Preoperative intraoral photograph and radiograph
Fig. 2
Fig. 2
Septa and thickened sinus membrane within maxillary sinus
Fig. 3
Fig. 3
a A paracrestal incision was made on the buccal side, and horizontal and vertical osteotomies were made with a piezo-electric device. b Placement of the ramus bone block as an interpositional graft. c Ramus bone graft fixed
Fig. 4
Fig. 4
Preoperative and postoperative radiograph
Fig. 5
Fig. 5
Plate removal and insertion of two implants 6 months after grafting
Fig. 6
Fig. 6
Application of final fixed prosthesis
Fig. 7
Fig. 7
Nine-year follow-up radiograph of the implants
See this image and copyright information in PMC

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