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Banaras Hindu University, Varanasi, India, and Bristol University, Dental School, Bristol, England

0 cclusal splints have been used in the diagnosis and treatment of myo-occlusal disorders of the masticatory system, such as myofascial pain-dysfunction syndrome, periodontal bone loss, and nocturnal or diurnal bruxism.‘*’Occlusal splints effectively eliminate occlusal interferences and alter the relationship of the mandible to the maxillae as determined by tooth intercuspation. With the exception of athletic mouth protectors, occlusal splints are usually made of hard acrylic resin and are worn in the maxillary arch. Soft occlusal splints, however, are less likely to cause the significant occlusal changes