A promising method for treating periodontal problems is hydrogel, a substance made of functional polymers. With excellent biocompatibility, hydration retention, and sustained release, it has the potential to mimic the extracellular matrix and offer periodontal cells with adequate attachment sites and growth conditions. In order to serve as a guide for future work, we have outlined the key elements of hydrogel in this paper's discussion of periodontal tissue regeneration and major hydrogel production techniques. Hydrogels are crucial in the engineering of periodontal tissue because they offer cells the perfect habitat. Future research must focus on the creation of intelligent, multipurpose hydrogels for periodontal reconstruction.