| Autor: |
Lyros I; Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece., Perrea D; Laboratory of Experimental Surgery and Surgical Research 'N.S. Christeas', Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece., Tosios K; Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece., Nikitakis N; Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece., Tsolakis IA; Department of Orthodontics, School of Dentistry, Aristotle University of Thessaloniki, 54623 Thessaloniki, Greece., Ferdianakis E; Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece., Fora E; Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece., Lykogeorgos T; 'Hatzikosta' General Hospital of Messolonghi, 30200 Messolonghi, Greece., Maroulakos MP; Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece., Vardas E; Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece., Georgaki M; Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece., Papadopoulou E; Department of Oral Medicine & Pathology and Hospital Dentistry, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece., Tsolakis AI; Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece.; Department of Orthodontics, Case Western Reserve University, Cleveland, OH 44106, USA. |
| Abstrakt: |
The present study aimed to investigate any biochemical and histological changes of the rat condyle and mandible in animals that had sustained mandibular growth restriction. Seventy-two male Wistar rats were divided into two equal groups, experimental and control. Each group consisted of three equal subgroups. The animals were sacrificed 30, 60, and 90 days after the start of the experiment. Blood samples were collected from the eye, and the osteoprotegerin (OPG), Receptor Activator of Nuclear Factor Kappa B Ligand (RANKL), and Macrophage Colony-Stimulating factor (MCSF)concentrations were measured by using enzyme-linked immunosorbent assay (ELISA) kits. A histological analysis was performed on the mandibular condyles. The blood serum values of OPG, RANKL, and MCSF did not exhibit any statistically significant difference between groups or subgroups. However, significant histological changes became evident after a histomorphometric condylar examination was performed. The Bone Surface/Total Surface ratio appeared reduced in the anterior and posterior regions of the condyle. In addition, the Posterior Condylar Cartilage Thickness was measured and determined to be significantly diminished. The present intervention that employed orthodontic/orthopedic devices did not prove to have any significant effect on the circulating proteins under study. Posterior displacement of the mandible may culminate only in local histological alterations in condylar cartilage thickness and its osseous microarchitecture. |
