Pickling Write a short note on pickling. Answer: After removing the investment the surface of the casting appears dark with oxides and tarnish. Such surface film can be removed by a process known as “pickling” which consists of heating the discolored casting in an acid. One of the best pickling solutions for gypsum-bonded investment is a 50% hydrochloric acid … [Read more...] about Pickling
Dental Materials
Casting Procedure And Casting Defects
Casting Procedure And Casting Defects Describe casting defects and their remedies in detail. Or Classify casting defects and various methods to compensate for defects. Or Discuss casting defects in detail. Or Classify casting defect. Write in detail about casting defects. Or Describe and classify casting defects. Write in detail about casting defects. Or Write in … [Read more...] about Casting Procedure And Casting Defects
Casting Machines In Dentistry
Casting Machines In Dentistry Write a short note on casting the crucible. Answer: The crucible is heat resistant container in which alloy is melted before casting. There are four types of casting crucibles, i.e. Clay, carbon, quart, and zirconia-alumina. Clay crucibles are used for high noble and noble type alloys while carbon crucibles are used for high noble … [Read more...] about Casting Machines In Dentistry
Types Of Casting Defects
Types Of Casting Defects Define casting defects. Classify and enumerate in detail the different types of porosities and their causes. Answer: A casting defect is an irregularity in the metal casting process that is very undesirable. Classification and Enumeration of Different Types of Porosities: 1. Those caused by solidification shrinkage: Localized shrinkage … [Read more...] about Types Of Casting Defects
Dental Bur Rake Angle
Dental Bur Rake Angle Write a short note on the rake angle. Answer: Each bur blade has two sides, the rake face and clearance face, and three angles, rake angle, edge angle, and clearance angle. The rake angle is the most important design characteristic of a burred blade. The rake angle is the angle between the rake face and the radial line. The rake angle … [Read more...] about Dental Bur Rake Angle