Comparison of New and Conventional Centric Relation Techniques. Clinical, Electromyographical and Radiological Evaluation

      Аннотация: Aim: To assess the best technique to retrude the mandible to centric relation amongst Dawson’s bimanual and Wax ball technique.The study was conducted as a randomised controlled trial on dentate subjects aged between 18-25 years with Angle’s class I occlusion with no occlusal disharmony or balancing contacts, intact dentition except for 3rd molars.The methodology for this research study was carried out in 3 phases:1. Clinical: Registration of centric relation using both the techniques- bimanual manipulation technique and wax ball technique. 2. Electromyography assessment of the temporalis and masseter muscle activity bilaterally.3. Radiological assessment for the positional assessment of condyles in relation to the articular eminence using MRI.Within the limitations of the present study it can be concluded both Dawson’s bimanual method and wax ball technique © are similar. There is no statistical difference between both the techniques. However; considering the time taken (3) and ease of understanding and ease of use the wax ball technique can be easily incorporated into day to day practice to guide the mandible into CR position.

Ключевые слова: Centric Relation, condyles, MRI, EMG