IRM

Chemical Composition

- IRM material is zinc oxide-eugenol with polymer reinforcement.

Clinical uses

- It is an intermediate restorative material. In a clinical study it was compared to other ZOE compositions and an EBA formulation. Result: it was judged superior for both Class I and II restorations ( at one and two year observations).

Among the many applications are:

restoration of deciduous teeth (when permanent teeth are two years or less from eruption); restorative emergencies; caries management program; dental school clinics and public health dental programs.

Handling characteristics

- IRM powder and liquid should be mixed in less than one minute. The resulting putty consistency is then inserted into the cavity. If indicated, conventional methods of matrix application are appropriate.

Physical characteristics

- Its strength properties approach those of zinc phosphate cement. Other physical-related clinical advantages include: excellent abrasion resistance; good sealing properties; and low solubility.