Herbert Bone Screw Versus Lag Screw in the Treatment of Anterior Mandibular Fracture (Randomized Clinical Trial)

Abstract

INTRODUCTION:The most common type of trauma is the mandibular fracture with various fixation modalities. One of these modalities is the use lag screw and Herbert cannulated bone screw. OBJECTIVES: Comparison of the clinical and radiographic results of Herbert bone screw (HBS) with conventional Lag screws in anterior mandibular fracture. MATERIALS AND METHODS: Twelve patients were randomly allocated into two groups each including six patients. Group 1 received Herbert bone screw, and group 2 received Lag screw. Follow up visits after 24-hours, one, four, six and twelve weeks for clinical assessment. After twelve weeks, a radiographic examination was conducted to measure the mean bone density along the fracture line. RESULT: After twelve weeks, both groups showed normal occlusion, no intra-fragmentary mobility, no wound dehiscence or infection, normal sensory function and decreased pain intensity level which was statistically significant (p value <0.0001). By comparing post-operative 12 weeks to pre-operative values, the mean bone density showed a statistically significant improvement in values in both groups 1 (p <0.001) and 2 (p<0.0001). CONCLUSION: HBS is comparable to gold standard lag screw with similar outcomes in anterior mandibular trauma. Yet, HBS shows higher compressive feature than LS. Also countersinking is not necessary during HBS insertion unlike LS.

Mental Nerve Injury During Fixation of Mandibular Fractures Using Twin-Fork Miniplate

“…There was a gender predilection in this study, with a male to female ratio of 8:1, which agrees with other studies (14,15). The explanation for this higher male ratio may be that men are more exposed to RTA as the percentage of males who ride vehicles and motorcycles is higher than females; also, men are more involved in interpersonal violence than women.…”