Objective:To appraise the obturation capability of bonded vertically fractured posterior tooth using 3 different detin adhesive by microleakage tests and scan electron microscopy(SEM) observation.
The influence of a new high-performance bond on the heat-fading-resistance of a self-manufactured semimetal friction materials used for auto brake disk was discussed.
The finite element method is applied to prestressed slabs, the mechanical characters under the normal using load condition are analysised, with unconsidering the lateral restraints.
The dependences of seepage velocity and bending strength on agglomerant content, forming pressure, particle diameter of the aggregate, soaking time, firing temperature and so on were discussed.
For sinter with 25% and 50% MAC fines the iron oxides mainly consisted of hematite and magnetite, the bonding phase were mainly dicalcium silicate, glassiness, and a few amount of calcium ferrite.