Physical Properties of Root Canal Cements

By Grossman L

Date: 10/1976
Journal: JOE

Summary: 

Purpose:  to assess the physical properties (particle size, flow, adhesion, setting time and dimensional changes) among AH26, Diaket, Kerr sealer, Mynol, N2, N2 no-lead, Procosol (non- staining), RC2B, Roth 801, Roth 811, Tubliseal, and zinc oxide-eugenol cement.

Materials/Methods:

Particle size: powder placed on a mesh sieves and vibrated for 20 sec, then particles passed by were weighted and subtracted from original weight

Flow: cement was mixed and placed on a glass plate that was positioned vertically. Flow was measured in cm after 24h

Setting time: Test was repeated on the thin layer that flow above the mold •Adhesion: cements were placed on sandblasted glass slab through a metal tube, 2 links of ball chain were dropped in Left for 1 week to set in incubator. After that weights ranging from 100 to 1,000 gm were attached to test adhesion.

Dimensional changes: each material was placed in test tube (6-8mm) dye placed above it for 24 H before examining of leakage. Each test was repeated 10 times/cement

Most highlighted Results:

•Degree of fineness, from finest to least fine, is as follows:
AH26, Roth 811, Kerr sealer, Roth 801, Mynol, RC2B, N2, N2 no-lead, Procosol, zinc oxide-eugenol, and Diaket. •

Flow (Chart and table 2). Setting time (Chart and table 3).

•AH 26 and Diaket were the best in adhesion properties, zinc oxide eugenol showed no adhesion.

•Leakage (Chart and tables 5)