Journal of Oral Implantology May 2013 - (Page 248)

RESEARCH The Effects of a Static Magnetic Field on Bone Formation Around a Sandblasted, Large-Grit, Acid-Etched–Treated Titanium Implant Richard Leesungbok, DMD, MSD, PhD1* Su-Jin Ahn, DMD, MSD, PhD1 Suk-Won Lee, DMD, MSD, PhD1 Geon-Ho Park, DMD, MSD, PhD2 Joo-Sung Kang, DMD, MSD2 Jung-Joo Choi, DMD, MSD2 The purpose of this study was to compare the bone formation around commercial sandblasted, large-grit, acidetched (SLA)–treated titanium implants with or without a neodymium magnet in a rabbit tibia through histomorphometric analysis. Commercial SLA-treated implants with or without neodymium magnets were placed in 10 rabbits. After incising the flat part of the rabbit’s tibia and installation of the specimens of titanium implants, the nonmagnet group was stitched without magnet insertion. On the other hand, the magnet group was inserted with neodymium magnet, fixed with pattern resin, and stitched. At 3 and 6 weeks after surgery, the animals were sacrificed, and the specimens were obtained. Undecalcified specimens were prepared for histomorphometric analysis of the bone-to-implant contact ratio (BIC) and bone volume (BV). The histomorphometric findings of the cortical bone showed that the mean BVs of the magnet group (3 weeks, 75.99%; 6 weeks, 82.94%) were higher than those of the nonmagnet group (3 weeks, 74.58%; 6 weeks, 78.75%), but there were no significant differences between the 2 groups (P . .05). In the marrow bone, the mean BICs of the magnet group (3 weeks, 10.36%; 6 weeks, 10.41%) were higher than those of the nonmagnet group (3 weeks, 6.41%; 6 weeks, 7.36%). After 3 weeks of installation, there was a significant difference between the 2 groups (P , .05). In rabbit tibia, the SLA-treated titanium implants with a neodymium magnet can trigger faster early peri-implant bone formation than those without a magnet. Key Words: static magnetic field, early peri-implant bone formation, histomorphometric analysis, SLAtreated titanium implant INTRODUCTION D ental implants were invented to liberate patients from the effects of the loss of teeth and alveolar bone around it on mastication, esthetics, and pronunciation. They have ad- 1 Department of Biomaterials & Prosthodontics, Kyung Hee University Hospital at Gangdong, School of Dentistry, Kyung Hee University, Seoul, Korea. 2 Department of Prosthodontics, School of Dentistry, Graduate School, Kyung Hee University, Seoul, Korea. * Corresponding author, e-mail: hjhasj@hotmail.com DOI: 10.1563/AAID-JOI-D-11-00101 248 Vol. XXXIX /Special Issue /2013 vanced rapidly after the hypothesis was proven that osseointegration occurs directly when an implant and osseous tissue integrates without any soft-tissue intervention.1 Nevertheless, patients still experience a long period of inconvenience to allow the superstructure of a prosthetic appliance to be fully functional for mastication after implant installation. The healing process of each patient can differ significantly from 6 weeks to 6 months according to their bone density.2 Therefore, several attempts have been made to find the right solution for patients experiencing difficulties during the osseointegration

Table of Contents for the Digital Edition of Journal of Oral Implantology May 2013

Implantology: Inter-Dependent Worldwide Relationships
Use of Osteotomes for Implant Bed Preparation-Effect on Material Properties of Bone and Primary Implant Stability
The Effects of a Static Magnetic Field on Bone Formation Around a Sandblasted, Large-Grit, Acid-Etched-Treated Titanium Implant
Effect of Platelet-Rich Plasma on the Outcome of Early Loaded Dental Implants: A 3-Year Follow-up Study
Flapless Dental Implant Surgery for Patients on Oral Anticoagulants-The "WarLess Procedure": A Report of 2 Cases
Radiographic Evaluation of Narrow-Diameter Implants After 5 Years of Clinical Function: A Retrospective Study
Histomorphometry of 2 Immediately Loaded Mini Implants Retrieved From Human Mantible After 3 Months: A Light and Scanning Electron Microscopy Report
Splinted Zirconia Fixed Partial Denture Supported by Small Diameter (Mini Implants) in the Posterior Mandible: A Case Letter

Journal of Oral Implantology May 2013