Dental Space

Iron materials are more heat conductivity than nonmetals and when using the metals in filling, they may cause pain due to their transfers of heat or cold more than natural teeth do

نكمل

 What is the amount of heat in calories or joules passing per second, through a body 1cm thick when the temperature difference 1C

When the temperature get down the solid will expand

When not equal liner, coefficient of the thermal expansion and contraction for filling tooth this causes cracks

Of the damages of opening and closing the gap is

If the filling leaks , this will cause tooth decay - Tooth decay =تسوس الاسنان

Most be the liner coefficient of thermal expansion and contraction in filling different from labs with natural teeth

The change in length per until length for 1cm temperature change

All Properties must be perfect to use in materials

The physical properties of dental material include

TThe signs that concerned with dealing with materials that are used in dentistry and knowing their physical, chemical and mechanical properties and ways to manipulate these properties is called