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Publications (1)1.18 Total impact

  • Amol Patil, Ravindranath Sable, Ramanlal Kothari
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    ABSTRACT: Abstract Objective: To determine if the mandibular condylar cartilage (MCC) will grow with and without mandibular anterior repositioning appliances with the administration of insulin-like growth factor (IGF-1) and transforming growth factor-β (TGF-β). Materials and Methods: Twenty-four growing New Zealand rabbits were divided into three groups: a group with saline injection in the temporomandibular joint, a group that received anterior positioning appliance, and a group that received injection of growth factors as well as mandibular repositioning appliance. Real-time reverse transcription polymerase chain reaction technique was used to study gene expression supported by histomorphometry. Results: Administration of growth factors along with mandibular repositioning appliances has induced 5.70-fold expression of matrix metalloproteinase-1 (MMP-1) (P < .0005) and 1.29-fold expression of MMP-13 (P < .0005). In contrast, administration of mandibular repositioning appliances only has induced 2.33-fold expression of MMP-1 (P < .0005) and 0.83-fold expression of MMP-13 (P < .0005). Histomorphometric analysis revealed increased proliferation of the condylar cartilage in the appliance and injection group as compared to the control group. Conclusion: The administration of growth factors along with the use of mandibular advancement appliance has increased genetic expression of MMP-1 and MMP-13 supported by histomorphometric evidence indicating growth of condylar cartilage.
    The Angle Orthodontist 03/2012; · 1.18 Impact Factor