Journal of Oral Implantology September 2012 - (Page 519)

CLINICAL Anorganic Bovine-Derived Hydroxyapatite vs b-Tricalcium Phosphate in Sinus Augmentation: A Comparative Histomorphometric Study Mehmet Kurkcu, DDS, MSc, PhD1 M. Emre Benlidayi, DDS, PhD1* Burcu Cam, DDS, PhD1 Yasar Sertdemir, MSc, PhD2 The choice of augmentation material is a crucial factor in sinus augmentation surgery. Bovine-derived hydroxyapatite (BHA) and beta-tricalcium phosphate (b-TCP) have been used successfully in sinus augmentation procedures. Choosing one of these materials for sinus augmentation is still controversial. The aim of this clinical study was to compare the biological performance of the new BHA graft material and the well-known synthetic b-TCP material in the sinus augmentation procedure. The study consisted of 23 patients (12 male and 11 female) who were either edentulous or partially edentulous in the posterior maxilla and required implant placement. A total of 23 two-step sinus-grafting procedures were performed. BHA was used in 13 patients, and b-TCP was used in 10 patients. After an average of 6.5 months of healing, bone biopsies were taken from the grafted areas. Undecalcified sections were prepared for histomorphometric analysis. The mean new bone formation was 30.13% 6 3.45% in the BHA group and 21.09% 6 2.86% in the b-TCP group (P ¼ .001). The mean percentage of residual graft particle area was 31.88% 6 6.05% and 34.05% 6 3.01% for the BHA group and b-TCP group, respectively (P ¼ .047). The mean percentage of soft-tissue area was 37.99% 6 5.92% in the BHA group and 44.86% 6 4.28% in the b-TCP group (P ¼ .011). Both graft materials demonstrated successful biocompatibility and osteoconductivity in the sinus augmentation procedure. However, BHA appears to be more efficient in osteoconduction when compared with b-TCP. Key Words: anorganic bovine-derived hydroxyapatite, beta-tricalcium phosphate, sinus augmentation, histomorphometry INTRODUCTION mplant placement in the posterior maxilla often requires surgical involvement of the subantral area because of insufficient bone volume. Maxillary sinus floor augmentation performed for inserting the implants in this region was first described by Boyne and James1 and Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Cukurova University, Adana, Turkey. 2 Department of Biostatistics, Faculty of Medicine, Cukurova University, Adana, Turkey. * Corresponding author, e-mail: DOI: 10.1563/AAID-JOI-D-11-00061 1 I Tatum.2 This surgical procedure makes the implant placement possible by enhancing the alveolar bone height in this region. A wide variety of graft materials have been used to augment the maxillary sinus floor. Autogenous bone grafts are considered to be the gold standard since they are not immunogenic and they have osteogenic, osteoinductive, and osteoconductive properties.1,3–6 However, there are several disadvantages including donor site morbidity, limping when the graft is taken from the iliac crest, prolonged healing time, second surgical intervention, requirement of general anesthesia and hospiJournal of Oral Implantology 519

Table of Contents for the Digital Edition of Journal of Oral Implantology September 2012

American Academy of Implant Dentistry Foundation Supports Basic and Clinical Research
Evaluation of 3- to 8-Year Treatment Outcomes and Success Rates With 6 Implant Brands in Partially Edentulous Patients
Histometric Analysis of Bone Repair in Bone-Implant Interface Using a Polylactic/ Polyglycolic Acid Copolymer Associated With Implants in Rabbit Tibia
Fold-Over Flap Technique for Developing the Facial Gingival Contour: A Case Report
Rehabilitation of the Atrophic Posterior Maxilla With Pterygoid Implants: A Review
Immediate Loading of Maxillary and Mandibular Implant-Supported Fixed Complete Dentures: A 1- to 10-Year Retrospective Study
Immediate Loading of Single Post-Extractive Implants in the Anterior Maxilla: 12-Month Results From a Multicenter Clinical Study
Immediate Implants After Enucleation of an Odontogenic Keratocyst: An Early Return to Function
Effects of Different Abutment Connection Designs on the Stress Distribution Around Five Different Implants: A 3-Dimensional Finite Element Analysis
Implant-Prosthetic Rehabilitation of a Patient with Nonsyndromic Oligodontia: A Clinical Report
Planning for Immediate Loading of Implant-Supported Prostheses: Literature Review
Development of a Rat Model of Bisphosphonate-Related Osteonecrosis of the Jaw (BRONJ)
Anorganic Bovine-Derived Hydroxyapatite vs β-Tricalcium Phosphate in Sinus Augmentation: A Comparative Histomorphometric Study
Peripheral Giant Cell Granuloma Associated With Dental Implants: Clinical Case and Literature Review
Bilateral Vertical Ridge Augmentation With Block Grafts and Guided Bone Regeneration in the Posterior Mandible: A Case Report
Cell Culture–Based Tissue Engineering as an Alternative to Bone Grafts in Implant Dentistry: A Literature Review

Journal of Oral Implantology September 2012