Biomechanical Study of Trapezoidal Plate, Delta Plate and Miniplate in Subcondylar Fracture
Journal Title: Journal of Clinical and Diagnostic Research - Year 2018, Vol 12, Issue 10
Abstract
ABSTRACT Introduction: Condylar fracture accounts for 25-35% of all mandibular fracture. When it comes to open reduction and internal fixation, the design of the plate plays a crucial role to withstand the amount of masticatory force in the condylar region. Aim: To evaluate the biomechanical stability of osteosynthesis using the Trapezoidal plate, Delta plate and Miniplate in subcondylar fracture. Materials and Methods: The condyle of 36 porcine hemimandible was osteotomized at a defined location with the help of a jig. Three groups A, B, C were created and each group had 12 hemimandibles. Group A was fixed with trapezoidal plate, group B was fixed with delta plate and group C was fixed with 2 four-hole miniplates. Each group was subjected to a linear loading using a Universal Testing Machine (UTM) in four different directions. The direction of the force used was from lateral to medial, medial to lateral, anterior to posterior and posterior to anterior was indicated using (1,2,3,4) respectively. Yield load and yield displacement were measured for the trapezoidal plate, delta plate and miniplate. Means were derived and compared for statistical analysis using the Kruskal-Wallis test and Mann-whitney U test with a confidence level of 95%. Results: None of the plates fractured. Screw loosening was seen in one delta plate and in two miniplate. In posterior to anterior and from medial to lateral the trapezoidal plate tolerated the highest load. From anterior to posterior and lateral to medial the miniplate tolerated the maximum load. Statistically significant difference was seen for yield load and no difference was seen for yield displacement in three groups. Conclusion: This biomechanical study indicates that like miniplate, trapezoidal and delta plates exhibit stable osteosynthesis for subcondylar fractures. The trapezoidal and delta plate has the advantages of providing three dimensional stability using single plates.
Authors and Affiliations
JYOTISH SAIKIA, Sanjeev Kumar, Harsh Jain, Amit Gupta
Keywords
Related Articles
- EP ID EP529940
- DOI 10.7860/JCDR/2018/36725.12134
- Views 83
- Downloads 0
Index/Ring Finger Ratio, Hand and Foot Index: Gender Estimation Tools
Introduction: Gender estimation from dismembered human body parts and skeletal remains in cases of mass disasters, explosions, and assaults cases is an imperative element of any medico-legal investigations and has been a...
Impact of Arm Length and Body Mass Index on Abductor Pollicis Brevis (APB) H-Reflex among Females
ABSTRACT Introduction: Hoffmann reflex (H-reflex) is an electrically induced reflex analogous to the mechanically induced spinal stretch reflex. H-reflex is useful clinically to diagnose nerve root lesions, particularly...
Primary Ewings Sarcoma of Kidney: A Case Report
ABSTRACT Primary Ewings Sarcoma (EWS) of the kidney is a very rare tumour and very few cases have been reported till date. We present a case of a 36-year-old lady presenting to us with flank pain and haematuria, with a h...
Infiltrating Ductal Carcinoma Co-Existing with Intraductal Papillary Carcinoma of Male Breast: A Rare Case Report
Male breast carcinomas are rare tumours, accounting for less than 1% of all malignancies in men. Intracystic Papillary Carcinoma (IPC) in males is a very rare entity, representing 5-7.5% of all male breast carcinomas. It...
Cone-Beam Computed Tomography Evaluation of Vertical Bone Thickness of Midpalatal Suture Area in Young Patients: A Pilot Study
ABSTRACT Introduction: Miniscrews are devices used when absolute anchorage is required. They are easy to install and recommended for all ages. Aim: The aim of this study was to assess bone thickness of midpalatal suture...