An experimental study on injury characteristics of blast injury in maxillofacial region wounded by spherical explosive
- VernacularTitle:下颌骨爆炸性损伤致伤效应的实验研究
- Author:
Lisheng HE
;
Jianhu LI
;
Yanpu LIU
- Publication Type:Journal Article
- Keywords:
Blast injuries;
Mandibular injuries;
Facial injuries;
Pathology
- From:
Journal of Practical Stomatology
2001;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To study the injury characteristics of blast injury in maxillofacial region wounded by spherical explosive. Methods: Spherical explosive was used to wound maxillofacial region in rabbits , after gross observation of the trauma , bone tissue specimens were collected from 0.5 or 1.0 cm to the boundary of wound 6 hours, 3 and 7 days after wounding respectively, the samples were prepared and stained with HE and modified Mallory's trichrome staining and observed under light microscope . Microcirculation in wounded bone was studied by ink injection and observed in ground bone sections. Results: No changes were found 6 hours after injury. Inflammatory infiltration were found 3 days after injury.Osteonecrosis was observed 7 days after injury, the structure of bone beyond 0.1 cm of the wound was found to be normal and restoration of bone was observed. Conclusion : Pathological changes of mandible injured by spherical explosive are similar to those of usual fracture except that the wound of blast injury is seriously polluted.
