Results : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [2]
After 1 week of healing (Table 1), in the close-to-window region, the proportions of xenograft were 21.3 ± 14.7% and 55.9 ± 19.0 (p = 0.012) in the treated and untreated sites, respectively. After 8 weeks of healing (Table 2), these values decreased to a similar percentage (15.5 ± 14.4% and to 15.5 ± 14.2%; p = 0.917, respectively).
After 1 week of healing (Table 1), in the grafted sinus the highest amount of newly formed bone was found in the bone walls region (Fig. 8a), while very little or no bone at all was found in the other regions. No differences were found between treated and untreated sites. After 8 weeks of healing (Table 2), new bone increased in both sites, reaching higher percentages in the treated compared to the untreated sites in all regions. The total proportion of bone was 27.9 ± 12.9% in the treated sites and 23.6 ± 15.2% in the untreated sites (p = 0.128). The highest percentages of bone were found in the bone walls regions, being 38.0 ± 15.0% and 35.4 ± 15.0% in the treated and untreated sites, respectively (p = 0.310). New bone was still found forming ridges towards the provisional matrix, showing that the healing was not completed yet in all regions and in all sinuses (Fig. 8b).
Serial posts:
- Abstract : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits
- Introduction : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [1]
- Introduction : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [2]
- Materials and methods : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [1]
- Materials and methods : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [2]
- Materials and methods : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [3]
- Results : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [1]
- Results : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [2]
- Discussion : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [1]
- Discussion : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [2]
- Discussion : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [3]
- Availability of data and materials : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits
- Abbreviations : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits
- References : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [1]
- References : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [2]
- References : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [3]
- References : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits [4]
- Funding : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits
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- About this article : Influence of the use of autogenous bone particles to close the access window after maxillary sinus floor augmentation: an experimental study in rabbits
- Table 1 Histomorphometric analysis. Tissues evaluated in the various regions after 1 week of healing : Influence of the use of autogenous bone particles to close the access window after maxillary
- Table 2 Histomorphometric analysis. Tissues evaluated in the various regions after 8 weeks of healing : Influence of the use of autogenous bone particles to close the access window after maxillary
- Fig. 1. Clinical view of the surgical procedures. a Tibial bone exposed for autogenous bone harvesting using a bone scraper. b Antrostomies prepared. c Autogenous bone particles placed in the antrostomy. d Xenograft and bone particles (red arrow) at the antrostomies. e Collagen membranes placed on the antrostomies. f Wounds closed with sutures : Influence of the use of autogenous bone particles
- Fig. 2. The various regions evaluated at the histomorphometric analyses. Bone walls (red arrow); middle (white arrow); sub-mucosa (yellow arrow); close-to-window (orange arrow). The antrostomy region was also evaluated at the medial and lateral edges (dark green arrows) and in the middle aspect (light green arrow) : Influence of the use of autogenous bone particles
- Fig. 3. Photomicrographs of decalcified sections illustrating the healing after 1 week. a Treated site. Bone strips occupying the antrostomy and the subjacent area (close-to-window region). b Untreated site. Note the new bone-forming from the sinus bone walls. Scarlet-acid fuchsine and toluidine blue stain. Images grabbed at × 20 magnification : Influence of the use of autogenous bone particles
- Fig. 4. Photomicrographs of ground sections. a) Treated site. Bone residues (examples in yellow asterisks) included in soft tissue containing fibroblast-like cells and inflammatory cells. b) Untreated site. Xenograft residues (examples in red asterisks) surrounded by soft tissue rich in fibroblast-like cells. Scarlet-acid fuchsine and toluidine blue stain. a) 200 x magnification.; b) 100 x magnification : Influence of the use of autogenous bone particles
- Fig. 5. Photomicrographs of decalcified sections illustrating the healing after 8 weeks. Both at the treated (a) and untreated (b) sites, the antrostomy was closed in most cases, presenting residual defects of various dimensions in the outer side. New bone was connecting the lateral and medial sinus walls. The middle and sub-mucosa regions were not healed completely yet. Scarlet-acid fuchsine and toluidine blue stain. Images grabbed at × 20 magnification : Influence of the use of autogenous bone particles
- Fig. 6. Photomicrographs of decalcified sections illustrating the healing after 8 weeks. a Treated site. Most of the antrostomies presented remaining defects in the outer contour. b, c Untreated sites. Two antrostomies of the treated sites and four of the untreated sites appeared not closed with corticalized bone and presented connective tissue interposed between the edges of the antrostomy. Scarlet-acid fuchsine and toluidine blue stain. a Image grabbed at × 20 magnification. b, c Images grabbed at × 40 magnification : Influence of the use of autogenous bone particles
- Fig. 7. Box-plot representing the new bone percentage and standard deviations (whiskers) found in the various regions evaluated after 8 weeks of healing. (*), a statistical significant difference : Influence of the use of autogenous bone particles
- Fig. 8. Photomicrographs of decalcified sections. a Untreated site. Woven bone formed from the sinus walls after 1 week of healing. b Treated site. After 8 weeks, woven bone was still found forming ridges towards residues of provisional matrix, showing that the healing was not completed yet. Scarlet-acid fuchsine and toluidine blue stain. a × 100 magnification. b × 20 magnification : Influence of the use of autogenous bone particles