The purpose of this study was to evaluate clinically a new type of temporary filling procedure for class II inlay restoration on primary molars. Dislodgement of temporary filling in restoration of class II inlay causes mesial shift of the primary molars, and consequently results in an inability to set the inlay. The required characteristics for temporary filling materials is that they are not dislodged while they are used, however easily removable when necessary, and not harmful to dental pulp.
We developed a new method of temporary filling suitable for class II inlay restoration for primary molars. The method is as follows: Hydroxide base (Procal, Life) is applied to the prepared cavities for the purpose of protection of the pulp and also for making it easy to remove the temporary filling materials, and then composite resin is filled over it. A new method of temporary filling was applied in 60 cases of Class II inlay prepared cavities on human primary molars and observed clinically.
The following conclusions were obtained from this investigation.
1. Dislodgement of the temporary filling was seen in only one case (1.7%) of a 142 day specimen which was an unusually long term for an inlay temporary filling.
2. In most of the cases (52 cases,88.1 %) removal of the temporary filling was easy.
3. The inlay could be set easily in all cases except in one case of dislodgement of the temporary filling.
4. All specimens were found to be clinically asymptomatic both in the teeth and the gingival tissue.
5. The new method of temporary filling for class II inlay restorations for primary molars was considered effective.