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In the maxillary superior reposition during Le Fort I surgery, 2 types of intermediate surgical splints (thick and thin splints) are used which help to place the maxilla in its new position. The aim of the study was to compare thin and thick surgical splint during Le Fort I osteotomy in vertical maxillary excess subjects. Splints were prepared using a model surgery on casts and were used during surgery. We determined changing in vertical reference lines on the maxilla when it was positioned. We evaluated 19 subjects (6 females and 13 males) that consisted of 10 skeletal class II-vertical maxillary excess (VME), 8 skeletal class III-VME, and 1 pure VME. Results showed that the changing the splint would lead to change in reference lines in 6 subjects (32%). In 4 subjects, reference line changes were positive and in 2 subjects were negative. In the remaining 13 (68%) subjects, no changes occurred. A significant relationship was seen among the maxillary superior reposition, incisal pin changes, and reference line changes. In conclusion, following the use of the thin and thick splints, the maxilla can take different positions. The possibility of variations in using thin and thick splints is related to the changes in the incisal pin and the amount of maxillary impaction. Furthermore, the use of thick splints will cause the maxilla to take a more correct position.

The aim of our study was to evaluate the biodegradable plates (PG910/PDO) for reconstruction of various sizes of the orbital floor defects in the blow-out fractures. We included patients who had an impure blow-out fracture. All patients had a recent trauma and also the surgical intervention was done between 1 and 10 days after trauma. The amount of the orbital floor defect was measured in each case through computed tomography scan. In the surgical intervention, a biodegradable plate was used for the reconstruction of the orbital floor defect along with titanium miniplates used for bone fixation in orbital rim. Due to aesthetic reasons, all patients underwent secondary surgery including removal of titanium miniplates after 18 months. The orbital floor was reevaluated during the removal of the miniplates. The clinical evaluation of remnant defects and biodegradable plates (presence of complete or partial resorption) were documented for each patient. In our study a total of 15 patients (10 males and 5 females) underwent the orbital floor reconstruction using biodegradable miniplates. The size of the orbital floor defects was meanly 3.51 ± 1.29 cm(2). Results demonstrated that 4 out of 15 patients had a remnant defect after resorption of the biodegradable plate. In 10 out of 15 patients, the biodegradable plates completely replaced with fibrous tissues after 18 months. Remaining five patients had partial resorption of plates. There was not any relationship between the defect size and the remnant defects (p > 0.05). A significant relationship was seen between the defect size and the plates' resorption rate (p < 0.001). There is a significant relationship between the resorption rate and the remnant defect. The risk to have remnant defects have been increased as the plates had incomplete resorption. The use of biodegradable plates is an appropriate option for reconstruction of the orbital floor defects. The defect size does not have any effect on the stability of the plate. However, incomplete plate resorption increases the risk of remnant defects in the orbital floor. The larger defects lead to slow degradation of biodegradable plates.