The Management of Crown Fracture of Immature Teeth by MTA and Calcium Hydroxide: Case Reports

In recent times, interest has centred on the use of mineral trioxide aggregate (MTA), due to its wide array of application in the treatment of complications following dental trauma. These conditions include teeth with exposed pulp, root fracture and pulp necrosis located in the coronal part of the pulp [24-26]. It is the material of choice as an apical plug during the short-term (one-visit) apexification techniques, and adjuvant, placed as a cervical plug in the regenerative endodontic treatment (RET) based on revascularisations techniques [15]. Hydration of MTA powder results in a colloidal gel composed of calcium oxide crystals in an amorphous structure [27]. The use of MTA in endodontics is due to the beneficial properties of this material like ease of manipulation and placement [28]. It neither gets resorbed, nor weakens the root canal dentinal structures [29]. It is insensitive to moisture and blood [16,30]. It shows antimicrobial properties, biocompatibility, low shrinkage and the capacity to induce cementum and periodontal ligament (PDL) formation [14,24,31,32]. During setting time, the pH is between 10.2 and 12.5, favouring hard tissue induction and creating a bacteria-tight seal [14,20,33,34].