LAUSR

Hydraulic cements are unique materials that set in the presence of water and do not deteriorate when wet and, as such, they lend themselves to be used in a range of endodontic procedures. Various products are available, and a classification is helpful to guide the clinician. Hydraulic cements may be used in three different locations namely: intra-coronally (pulp capping and barrier regenerative endodontics); intra-radicularly (root canal sealer and apical plug); and extra-radicularly (perforation repair and root-end filler). This article is the first of two parts and reviews the chemistry of these materials and their intra-coronal use. CPD/Clinical Relevance: Hydraulic cements are indicated for several procedures in clinical endodontics and their efficacy is supported by an increasing body of evidence.