Paper Information

Journal:   JOURNAL OF MASHHAD DENTAL SCHOOL   2007 , Volume 31 , Number SPECIAL ISSUE; Page(s) 12 To 16.
 
Paper: 

A PILOT STUDY OF RIDGE AUGMENTATION USING THE OSTEODISTRACTION TECHNIQUE AND INTERPOSITIONAL BONE GRAFT METHOD IN SHEEP

 
 
Author(s):  RAHMANI M.E.*, SARGOLZAEI N., SEDIGHI M.R.
 
* DEPT. OF PERIODONTICS, SCHOOL OF DENTISTRY AND DENTAL RESEARCH CENTER OF MASHHAD UNIVERSITY OF MEDICAL SCIENCES, MASHHAD, IRAN
 
Abstract: 

Introduction: The objective of this study is to increase the thickness of ridge in the dental pad of sheep by osteodistraction and interpositional methods.
Materials & Methods: In this study, three sheep were used as subjects. The animals were medicated before surgery. Under the aseptic technique and general anesthesia, a full partial thickness flap was reflected over the lateral surface of the dental pad of the mandible. The thickness of the ridge was measured in anterior (test) and posterior parts (control) of the dental pad. The osteodistraction method was performed on one side. After a latent period of 10 days, one millimeter tension was applied and repeated every two days to achieve 4 mm distraction. An interpositional bone graft was performed on the other side of the mandible. The animals were controlled by food and medicine for eight weeks and then slaughtered. The net increase in the width of the ridge, as a result of the two techniques, was compared using the Mann-Whitney U test. The difference between control and test sections at each side of the ridge was detected by the Wilcoxon test.
Results: The sheep tolerated the surgical procedure well. The soft tissue healed fine. The net width of the ridge increased to 1.83±1.15 mm in the distraction technique and 1±0.55 mm with the interposition method.
Conclusion: Both methods can be used for increasing the width of ridge, resulting in an improved implant site. The distraction osteogenesis is a new alternative for grafting procedures in increasing the width of ridge. The advantages of this method are that no donor region is required. This method needs further studies to achieve optimal results.

 
Keyword(s): RIDGE AUGMENTATION, DISTRACTION OSTEOGENESIS, OSTEODISTRACTION, INTERPOSITIONAL BONE GRAFT, BONE REGENERATION, RIDGE EXPANSION
 
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