Humans ; Mandibular Condyle ; injuries ; Mandibular Fractures ; surgery ; Postoperative Complications ; prevention & control

Atrophy ; Bone Transplantation ; methods ; Fracture Fixation, Internal ; Fracture Healing ; Fractures, Comminuted ; surgery ; Humans ; Mandible ; pathology ; Mandibular Fractures ; pathology ; surgery ; Surgical Wound Infection ; etiology

OBJECTIVETo evaluate the efficiency of individually fabricated titanium mesh to correct enophthalmos following orbital fracture by using computer-assisted navigation system.

METHODSForty- nine patients with unilateral orbital fracture were divided into navigation group (25 cases) and non-navigation group (24 cases). All patients underwent orbital reconstruction to correct post-traumatic enophthalmos with individually fabricated titanium mesh. The bilateral global projection and the orbital volumn were measured preoperatively and postoperatively. The depth of titanium mesh was measured postoperatively.

RESULTSStatistical analysis demonstrated the global projection at the affected side increased by (3.35 ± 1.46) mm in navigation group and by (2.25 ± 1.14) mm in non- navigation group postoperatively, and there was a significant difference between the two groups (P < 0.05). The orbital volumn at the affected side decreased by (5.94 ± 2.20) ml in navigation group and by (4.21 ± 2.18) ml in non-navigation group, and there was a significant difference between the two groups (P < 0.05). The depth of titanium was (31.95±2.97) mm in navigation group and (29.27±2.72) mm in non-navigation group, and the values between the two groups differed significantly (P < 0.05).

CONCLUSIONSThe use of computer-assisted navigation for the orbital wall reconstruction with individually fabricated titanium mesh can protect the optic nerve reliably and achieve satisfactory results.

Enophthalmos ; etiology ; surgery ; Eye Injuries ; Humans ; Orbit ; Orbital Fractures ; complications ; Prostheses and Implants ; Reconstructive Surgical Procedures ; Surgery, Computer-Assisted ; Surgical Mesh ; Titanium

OBJECTIVETo analyze the epidemiological characters of fresh maxillofacial fractures in hospitalized patients by the retrospective study.

METHODSFrom Jan. 2008 to Dec. 2013, a total of 1 009 patients with fresh maxillofacial fractures treated at Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology were investigated. The data were statistically analyzed by SPSS 21.0.

RESULTSThe male and female ratio was 2.94:1 and 33.5% of the patients aged from 20 to 30 years. The most common cause of the fresh fracture was road traffic accidents (424 cases, 42.0%), followed by tumblings (250 cases, 24.8%) and violence (128 cases, 12.7%). The number of new fracture was increasing gradually in recent years. The patients were at peak of 20-29 years old. The mandibular fracture was the most frequently seen (536 cases, 53.1%), followed by zygomatic complex fractures (233 cases, 23.1%). The simple maxillary fracture was rare and usually combined with other fractures. Infraorbital nerve injury was the most common one in nerve injuries (144 cases). The most common associated injury was extremity injuries (77 cases), followed by thoracic injury (65 cases) and craniocerebral injury (57 cases). Associated injuries were mostly caused by car accidents (127 sites), followed by fall (32 sites). Logictic regression analysis showed that fall and tumbling were risk factors of mandibular and condylar fracture (OR > 1, P < 0.05), while age was a protective factor (OR > 1, P < 0.05).

CONCLUSIONSOral and maxillofacial fresh fractures most commonly occurred in young people, and the most common cause of fractures was road traffic accidents. Infraorbital nerve was involved frequently. The most common associated injuries was extremity injuries.

Accidental Falls ; statistics & numerical data ; Accidents, Traffic ; statistics & numerical data ; Adult ; Beijing ; epidemiology ; Female ; Hospitalization ; statistics & numerical data ; Humans ; Male ; Mandibular Fractures ; epidemiology ; etiology ; Maxillary Fractures ; epidemiology ; etiology ; Maxillofacial Injuries ; epidemiology ; etiology ; Regression Analysis ; Retrospective Studies ; Risk Factors ; Sex Distribution ; Skull Fractures ; Violence ; statistics & numerical data ; Young Adult ; Zygomatic Fractures ; epidemiology ; etiology