The internal mandibular lengthening eevice of type MS - 1 in an experimental study: a preliminary report
10.3760/j.issn:1009-4598.2001.02.008
- VernacularTitle:MS-1型内置式下颌骨骨牵引延长器的研制及动物实验
- Author:
Xiaofeng CHANG
1
;
Xiaoming GU
;
Wenwei GUO
Author Information
1. Stomatology Hospital Xi'an Medical University
- From:
Chinese Journal of Plastic Surgery
2001;17(2):90-92
- CountryChina
- Language:Chinese
-
Abstract:
Objective To introduce the new type of MS - 1 internal mandibular distracter and its applications and to investigate the advantage or disadvantage of the device through an experimental study in dogs.Methods 15 dogs were subjected to unilateral or bilateral mandibular lengthening using the MS- 1 internal mandibular distracter. Photography, tooth casting, general measurement, X-ray and hisological examinations were conducted to observe new bone formation and mineralization at the bony gap at various times of distraction. Results The amount of mandibular lengthening reached to nearly 98% of the designed value in all animals except for one. Breaking or corrosion of the material was not discovered within the whole experimental period.The created bony gap was filled up with woven trabecular bone while some cartilage islands occurred in only 3 dogs. Conclusions The MS - 1 mandibular distracter has unique structural traits and advantages over the external one, such as precision of elongation. It may become a new access to treat mandibular deformities in the future.
