Vertical distraction osteogenesis using a titanium nitride-coated distractor.
OBJECTIVE
The purpose of this study was to examine the effect of using a titanium nitride (TiN)-coated vertical distractor on osseointegration after implantation.


METHODS
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.


CONCLUSIONS
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.
Yi
Kye-Joon
KJ
Department of Oral and Maxillofacial Surgery, College of Dentistry, Chosun University, GwangJu City, South Korea.
Kim
Su-Gwan
SG
Moon
Seong-Yong
SY
Lim
Sung-Chul
SC
Son
Jun-Sik
JS
Kim
Chan Gil
CG
Chung
KyungHo
K
D000818:Animals; D020099:Coated Materials, Biocompatible; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D004285:Dogs; D020007:Implants, Experimental; D013516:Oral Surgical Procedures, Preprosthetic / Q000295:instrumentation; D016348:Osseointegration; D019857:Osteogenesis, Distraction / Q000295:instrumentation*; D014025:Titanium; D014716:Vertical Dimension
D020099:Coated Materials, Biocompatible; D015921:Dental Implants; C041500:titanium nitride; D014025:Titanium