Vertical distraction osteogenesis using a titanium nitride–coated distractor
Received 24 September 2008; received in revised form 11 December 2008; accepted 5 January 2009.
Objectives
The purpose of this study was to examine the effect of using a titanium nitride (TiN)–coated vertical distractor on osseointegration after implantation.
Study design
Four adult mongrel dogs, weighing 9-10 kg, were used in this study. The lower premolars were extracted, and vertical distraction was performed after 10 weeks using 8 distraction devices (left, 4 titanium; right, 4 nitrified). A 7-day latency period was allowed before distraction began. The distraction device was activated at a rate of 0.5 mm twice a day for 5 days. After completing distraction, the device was removed after a consolidation period of 6 weeks and 24 implants were installed. The dogs were killed after 4 or 8 weeks. Histologic examinations were performed.
Results
The implant success rate was 100% in all of the study groups. Direct bone contact was achieved, and there were no significant differences between the control and experimental groups in the implantation area.
Conclusion
The results suggested that the nitrified distraction device does not negatively affect osseointegration in the vertical distraction osteogenesis; therefore, it has the advantageous potential to substitute for the conventional distractor.
aDepartment of Oral and Maxillofacial Surgery, College of Dentistry, Chosun University, GwangJu City, Korea
bDepartment of Pathology, College of Medicine, Chosun University, GwangJu City, Korea
cDepartment of Biomedical Engineering, University of Texas, San Antonio, Texas
dDepartment of Biotechnology, Konkuk University, Seoul, Korea
eDepartment of Polymer Engineering, University of Suwon, Hwaseong, Korea
Reprint requests: Su-Gwan Kim, DDS, PhD, Department of Oral and Maxillofacial Surgery, College of Dentistry, Chosun University, 421, SeoSukDong, DongGu, GwangJu City, South Korea
ABSTRACT