Hydrogels are a group of hydrophilic polymers which contain more than 10% of water content in their structure. They have got a specific structure and also compatibility with different condition of use. Flexibility of hydrogels, primarily due to its water content, makes it possible to use them in a myriad of applications ranging from industries to biological uses. Their application in medical field is popular due to their biocompatibility and inert nature. Hydrogels have a wide range of application in the field of dentistry also. These can be used as a better substitute for some of the materials used in dentistry. This article describes then various avenues for application of hydrogels in dentistry.