دانلود رایگان مقاله انگلیسی بازسازی دیوارهای اوربیتال توسط الگوی پیچ خورده لیزری انتخابی - IEEE 2017

ABSTRACT

Diagnosis and treatment of orbital wall fractures are based on both physical examination and computed tomography scan of the orbital cavity. The present paper reports on the secondary reconstruction of the skeletal orbit following untreated orbital floor fracture in a patient wearing an ocular prosthesis because of an orbital trauma. A computer-assisted approach, based on anatomical modelling and custom-made mould fabrication via selective laser sintering, is proposed for manufacturing a preformed orbital implant. Such a procedure offers precise and predictable results for orbital reconstructions. This protocol proved an effective reduction of operating time, patient morbidity and a fast and low-cost preoperative planning procedure. Such an approach can be used for immediate and in-office manufacturing of custom implants in trauma and reconstructive patients.

4. Conclusion

Orbital floor fractures, which are caused by blunt trauma to the periorbital and zygomatic region, have been occurring more often, from the increasing number of traffic and industrial accidents, social activities, and the events of violence. These fractures clinically occur with diplopia, extraocular movement limitation, and enophthalmos. As the failure of prompt recognition and treatment of these fractures may result in notable cosmetic and functional problems, such as enophthalmos, restriction in ocular motility, diplopia, and hypoesthesia of extended through the territory of the second trigeminal bran. Immediate diagnosis and treatment of orbital wall fractures are important and they are based on both physical examination and computed tomography scan of the orbit. A computer-assisted approach, based on anatomical modelling and custom-made mould fabrication via selective laser sintering, is necessary in order to manufacture a preformed orbital implant and to obtain accurate outcome for orbital reconstruction. Our procedure has the following advantages: 1) it provides effective decrease of surgical time, and patient morbidity; 2) the technique is low-cost for patient; 3) it involves a fast preoperative planning procedure. This protocol can be used for immediate and in-office manufacturing of custom implants in trauma and reconstructive patients.