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Related Experiment Video

Updated: Jun 12, 2026

Calvarial Model of Bone Augmentation in Rabbit for Assessment of Bone Growth and Neovascularization in Bone Substitution Materials
08:41

Calvarial Model of Bone Augmentation in Rabbit for Assessment of Bone Growth and Neovascularization in Bone Substitution Materials

Published on: August 13, 2019

New bone formation in the maxillary sinus using only absorbable gelatin sponge.

Dong-Seok Sohn1, Jee-Won Moon, Kyung-Nam Moon

  • 1Department of Dentistry and Oral and Maxillofacial Surgery, Daegu Catholic University Hospital, Daegu, Republic of Korea. dssohn@cu.ac.kr

Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons
|May 25, 2010
PubMed
Summary

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This study explored whether absorbable gelatin sponges alone could support new bone formation in the maxillary sinus during dental implant procedures. Seven patients underwent sinus floor elevation using a lateral window approach, with gelatin sponges placed to support the sinus membrane. No additional graft materials were used. After an average of six months, new bone formation was observed on radiographs. Eighteen dental implants were placed, with two failing due to initial instability. The authors suggest that this graftless approach may be a reliable method for sinus augmentation.

Area of Science:

  • Dental implantology within maxillofacial surgery
  • Bone regeneration research in oral medicine
  • Sinus augmentation techniques in periodontology

Background:

Sinus augmentation procedures are commonly used to increase bone volume in the posterior maxilla. Traditional methods often involve bone grafts, but these may carry risks such as donor site morbidity. Prior research has shown that graftless approaches may be feasible in select cases. However, the predictability of new bone formation without graft materials remains unclear. This uncertainty drives the need for alternative augmentation strategies. The role of absorbable materials in supporting bone regeneration has not been fully explored. No prior work had resolved whether gelatin sponges alone could provide sufficient structural support. This gap motivated the investigation of gelatin sponges as a standalone graft substitute.

Purpose Of The Study:

The aim of this study was to assess whether absorbable gelatin sponges could support new bone formation in the maxillary sinus without additional graft materials. The specific problem addressed was whether a graftless approach could reliably promote bone regeneration. The motivation stemmed from the desire to reduce surgical complexity and avoid graft-related complications. The study focused on the lateral window sinus augmentation technique. Researchers sought to determine if gelatin sponges could maintain membrane stability and allow bone growth. The study also aimed to evaluate implant success rates in this setting. No prior studies had tested gelatin sponges as the sole graft substitute in this context. The researchers aimed to provide evidence for a simplified augmentation protocol.

Keywords:
Absorbable gelatin spongeMaxillary sinus augmentationDental implant placementSinus floor elevation

Frequently Asked Questions

The study suggests that gelatin sponges may support new bone formation without additional graft materials.

The piezoelectric device was used to create the lateral bony window with minimal soft tissue damage.

Elevating the membrane created a new compartment to allow bone formation around the implant apex.

Eighteen implants were placed, and two failed due to insufficient initial stability, resulting in an 88.9% success rate.

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Biological Compatibility Profile on Biomaterials for Bone Regeneration
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Biological Compatibility Profile on Biomaterials for Bone Regeneration

Published on: November 16, 2018

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Last Updated: Jun 12, 2026

Calvarial Model of Bone Augmentation in Rabbit for Assessment of Bone Growth and Neovascularization in Bone Substitution Materials
08:41

Calvarial Model of Bone Augmentation in Rabbit for Assessment of Bone Growth and Neovascularization in Bone Substitution Materials

Published on: August 13, 2019

Biological Compatibility Profile on Biomaterials for Bone Regeneration
10:28

Biological Compatibility Profile on Biomaterials for Bone Regeneration

Published on: November 16, 2018

Main Methods:

The study involved seven patients requiring nine sinus augmentations. A lateral window was created using a piezoelectric device to minimize soft tissue trauma. The Schneiderian membrane was carefully elevated to form a new compartment. Absorbable gelatin sponges were placed to support the membrane over the implant apex. Dental implants were inserted simultaneously without additional graft materials. The lateral window was sealed using the bony portion after membrane elevation. Patients were monitored for an average of six months before implant uncovering. Radiographic assessments were used to evaluate new bone formation and implant integration.

Main Results:

Radiographic evidence showed new bone consolidation in the maxillary sinus without the use of bone grafts. Eighteen dental implants were placed across nine sinus augmentations. Two implants failed due to insufficient initial stability. No additional graft materials were used in any of the cases. The gelatin sponges remained in place and supported membrane stability. Membrane perforation or collapse was not observed in any case. Bone formation was sufficient to allow implant uncovering after six months. The success rate of implants placed in this setting was 88.9%.

Conclusions:

The authors suggest that using absorbable gelatin sponges alone may be a predictable method for sinus augmentation. The study found that new bone formation occurred without additional graft materials. The success rate of implants placed in this setting was high. The findings support the use of gelatin sponges as a standalone graft substitute. The lateral window approach was effective in maintaining membrane stability. The absence of bone grafts reduced surgical complexity. The study did not compare this method with traditional grafting techniques. The authors propose that this method may be suitable for selected clinical cases.

Implants were uncovered an average of six months after placement to assess new bone formation.

The authors propose that gelatin sponges may be a predictable graft substitute for sinus augmentation.