Volume 18, Issue 1 pp. 40-50
ARTICLE

Clinical and Histomorphometric Evaluation of Fresh Frozen Bone Allograft in Sinus Lift Surgery

Tatiana Regina Ramos Nantes de Castilho DDS, MSc

Corresponding Author

Tatiana Regina Ramos Nantes de Castilho DDS, MSc

Implantologist

Implantology Specialization Course, Fundação da Faculdade de Odontologia, School of Dentistry, University of São Paulo, São Paulo, Brazil

Corresponding Author: Tatiana R.R. Nantes de Castilho, FFO–FOUSP, Av. Prof. Lineu Prestes, 2227 Cidade Universitária, 05508-000 São Paulo, SP Brazil; e-mail: [email protected]Search for more papers by this author
Pedro Tortamano DDS, PhD

Pedro Tortamano DDS, PhD

assistant professor

Department of Prosthodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil

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Juliana Marotti DDS, PhD

Juliana Marotti DDS, PhD

Dental Assistant and Researcher

Department of Prosthodontics and Biomaterials, Faculty of Medicine, RWTH Aachen University, Aachen, Germany

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José Carlos Silva de Andrade Jr DDS

José Carlos Silva de Andrade Jr DDS

Implantologist

Implantology Specialization Course, Fundação da Faculdade de Odontologia, School of Dentistry, University of São Paulo, São Paulo, Brazil

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Israel Chilvarquer DDS, PhD

Israel Chilvarquer DDS, PhD

associate professor

Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo, Brazil

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Michel Eli Lipiec Ximenez DDS

Michel Eli Lipiec Ximenez DDS

professor

Radiology Specialization Course, Associação Paulista dos Cirurgiões Dentistas—Jardim Paulista, São Paulo, Brazil

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Maria Teresa de Seixas Alves MD, PhD

Maria Teresa de Seixas Alves MD, PhD

full professor

Department of Pathology, Federal University of São Paulo, São Paulo, Brazil

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First published: 06 June 2014
Citations: 5

Abstract

Purpose

The aim of this prospective clinical study was to evaluate the clinical and histomorphometric data of newly formed bone tissue from fresh frozen human allograft in sinus lift surgery.

Patients and Methods

Thirty-three sinus lift procedures were performed in 20 patients, divided into two groups. The control group (n = 8) received autogenous bone from the mandibular ramus, and the experimental group (n = 12) received fresh frozen bone (FFB) allograft in chips. After 6 months, 52 implants were placed and 50 biopsies were collected for histomorphometric analysis. Cone beam computed tomography scans were performed at preoperative, immediate postoperative, and delayed postoperative time intervals to assess the degree of graft volume loss.

Results

There was no statistically significant difference between groups as regards degree of graft volume loss (p = .983), total bone area (p = .191), remaining particles (p = .348), and proportion of active osteoblasts (p = .867). There was a statistically significant difference in the vitality rate between the groups (p = .043). In both groups, all implants were clinically osseointegrated after 4 months.

Conclusion

FFB allograft was shown to be a feasible substitute for autogenous bone graft in sinus lift surgery.

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