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Temporomandibular Joint (TMJ) ankylosis is a debilitating condition characterized by the fusion of the jawbone (mandible) to the temporal bone of the skull, resulting in restricted jaw movement. This condition can severely impact a person's ability to eat, speak, and maintain oral hygiene, and can also lead to facial deformities, especially in growing children. TMJ ankylosis can be classified into intra-articular (within the joint) and extra-articular (outside the joint) types. The condition arises from various etiologies, including trauma, infections, systemic diseases, and congenital...

All Portland cements tend to contain impurities of hexavalent chromium compounds due to the raw materials used or due to the additions, usually made during the process of cement production. During the past about three decades, numerous strategies for producing the Portland cement with low hexavalent chromium in wet condition have been devised by various researchers. All the information pertaining to this domain is proprietary in nature. The research domain under discussion has been reviewed excellently twice during the past decade. In European countries, US and Canada, due to stringent...