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. 2017:2017:2594670.
doi: 10.1155/2017/2594670. Epub 2017 Mar 2.

Maxillary Sinus Augmentation with Decellularized Bovine Compact Particles: A Radiological, Clinical, and Histologic Report of 4 Cases

Antonio Scarano  1
Affiliations

Maxillary Sinus Augmentation with Decellularized Bovine Compact Particles: A Radiological, Clinical, and Histologic Report of 4 Cases

Antonio Scarano. Biomed Res Int. 2017.

Abstract

Background. One of the most problematic regions for endosseous implants is the posterior maxilla, not only having poor bone density, but also lacking adequate vertical height as a result of sinus pneumatization. The purpose of the present study was a radiologic, histological, and histomorphometrical evaluation, in humans, of specimens retrieved from sinuses augmented with decellularized bovine compact particles, after a healing period of 6 months. Methods. Four patients, with atrophic resorbed maxillas, underwent a sinus lift augmentation with decellularized bovine compact bone from bovine femur. The size of the particles used was 0.25-1 mm. A total of four grafts and 5 biopsies were retrieved and processed to obtain thin ground sections with the Precise 1 Automated System. Results. The mean volume after graft elevation calculated for each of the 4 patients was 2106 mm3 in the immediate postoperative period (5-7 days), ranging from 1408.8 to 2946.4 mm3. In the late postoperative period (6 months) it was 2053 mm3, ranging from 1339.9 to 2808.9 mm3. Histomorphometry showed that newly formed bone was 36 ± 1.6% and marrow spaces were 34 ± 1.6%, while the residual graft material was 35 ± 1.4%. Conclusion. In conclusion, based on the outcome of the present study, Re-Bone® can be used with success in sinus augmentation procedures and 6 months are considered an adequate time for maturation before implant placement.

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Conflict of interest statement

The author declares that there are no competing interests.

Figures

Figure 1
Figure 1
CBCT of an edentulous patient with bilateral severely atrophic maxilla.
Figure 2
Figure 2
Sinus lifting procedure. The maxillary sinus lateral wall is exposed and a bone window is removed.
Figure 3
Figure 3
Sinus filled with cortical bovine bone.
Figure 4
Figure 4
A membrane is placed over the antrostomy.
Figure 5
Figure 5
Postoperative CBCT scan panoramic view at 6 months after maxillary sinus lifting.
Figure 6
Figure 6
The lateral wall is completely closed by new hard tissues.
Figure 7
Figure 7
(a-b) Bone core biopsy carried out with a small trephine. (c) Newly formed trabecular bone (T) is present, with wide marrow (M) spaces and biomaterials (B). Toluidine blue 10x.
Figure 8
Figure 8
At higher magnification previous image: a few lamellar bones are visible (LB). Toluidine blue 50x.
Figure 9
Figure 9
No gaps are present at the bone-particles interface, and newly formed bone is always in close contact with the particles. The biomaterial (B) seems to be totally incorporated in the trabecular bone (T). Toluidine blue 100x.
See this image and copyright information in PMC

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