Evaluation And Comparison Of Mandibular Asymmetry Indices In Different Classes Of Malocclusion: A Radiographic Study.

Objective: To evaluate contribution of condylar and ramal asymmetries in various classes of maloclussion with the use of Orthopantomographs by frontal aspect . Materials and Methods: Panoramic radiographs (PRs) are routinely taken radiographs for the diagnosis purpose. All radiographs were taken by experienced radiology technician on digital panoramic system. The subjects were positioned with the lips in rest position & head oriented to Frankfort horizontal plane as suggested by Azevedo et al. The sample consisted of study five groups including 150 subjects of different types of malocclusions. All the radioghraphic films were traced & measured by the same author and all the asymmetry indices were measured using formula developed by Habets et al. Results: Descriptive statistics and Comparison of Condylar Asymmetry index(CAI), Ramal Asymmetry index(RAI) and Combined Asymmetry index(CoAI) showed that there no statistical significance within RAI (0.216) and CoAI (0.116), but statistically significant values were recorded within CAI (0.0052).We have found more asymmetry in condyle than ramus. Conclusion: Generally for orthodontic treatment orthodontist see mainly skeletal malformation in sagittal plan but from our studies it can be said that it is equally important to look for skeletal asymmetry from frontal aspect, particularly in lower third of the face and condyle. If such asymmetries are diagnosed earlier then it is possible to intervene them with the help of asymmetrical myofunctional appliances. [Manjiri J NJIRM 2016; 7(5):78-81]

Assessment of nerve conduction study to establish most common electrophysiological predictor of lumbosacral radiculopathy among radiologically diagnosed L5S1 neural foramina compression cases.

Magnetic resonance imaging (MRI) and electromyography (EMG) are complimentary investigations in diagnosis of lumbosacral radiculopathy (LSR). With changing pattern of S1 electrodiagnosis by H-reflex study measures, electrophysiological studies were conducted to establish most common electrophysiological predictors of LSR in MRI diagnosed L5S1 neural foramina compression subjects. Fifty subjects, with definite L5S1 neural foramina compression underwent electrophysiological evaluation and the data was analyzed using established electrodiagnostic criteria. Reduced H/ M ratio in combination with absent H response was evident in 74 nerves. H-reflex study was abnormal in 88% subjects. Study concluded that, H/M ratio if used with other H-reflex study variables may be most common predictor of LSR.