Clinical Evaluation of Bacterial Leakage of Endodontic Temporary Filling Materials

By Beach CW, Calhoun JC, Bramwell JD, Hutter Jw, Miller GA.

Date: 09/1996
Journal: JOE

Purpose: To evaluate Cavit, IRM, and TREM endodontic temporary restoration materials for bacterial leakage in a human clinical study.

N= 51 Teeth

Exclusion criteria:  ☓Teeth exhibiting large proximal, facial, or lingual restorations that might permit marginal leakage into access chamber. ☓Teeth with questionable marginal integrity, unopposed teeth, and teeth opposing a complete denture or distal extension partial denture. ☓Teeth exhibiting fracture.

 Materials and methods:

•Marginal integrity of all restorations were evaluated radiographically and by extra and intracoronal examination.

•After RD isolation, Access cavity and RCT completed, the teeth randomly received one of the three temp. filling materials (Cavit, IRM, TREM) 

•All temp. restorations were placed according to the manufacturer’s instructions and 4-mm in thickness.

•Pre and post restoration pulp chamber sampling were obtained using dry sterile paper disk and then transferred into ( PRAS) transport media for culturing. ( after 3 weeks )

•Organisms cultured from within post restoration samples were identified using the Minitek system to determine predominant flora.

Most highlighted results:

•Positive growth was found in : TREM ( 4 out of 14 samples ) and IRM ( 1 out of 18 samples ) 

•Positive growth was not found in Cavit ( 0 out of 19 samples ) 

•Cavit provides significantly better seal than TREM, whereas no significant difference between Cavit and IRM 

Clinical significance:

The use of Cavit temp. restoration will provide a bacterial-free environment in the access of endodontically treated teeth for at least 3 weeks.