No abstract

INTRODUCTION: Distraction osteogenesis using internal distraction devices is commonly used to treat patients with congenital micrognathia. One main disadvantage of this treatment is the requirement for device and screw removal after a consolidation period. The conventional internal distraction devices utilize titanium screws for fixation. The removal of titanium screws can pose a challenge in some instances and may require the use of transbuccal approach with a trocar system.Biodegradable poly-L-lactide (PLLA) materials have been used for maxillofacial osteosynthesis in pediatric patient population. These materials do not need to be removed and are strong enough to provide bony fixation. Previous in vivo studies have found that the average force produced by mandibular distraction is 35.6N, with the maximal force reaching 69.4N. 1 We hypothesize that PLLA screws are strong enough to support the compressive force encountered during active mandibular distraction.