Casting Failures & Defects In Dentistry
“What are casting failures and defects in dentistry? A detailed question and answers guide”
It is also known as hot spot porosity. This occurs at the sharp occlusoaxial or incisoaxial line angle. It is mainly seen as an external void inside of a crown opposite sprue.
“Importance of studying casting failures for dental professionals: Questions explained”
Cause Of Suck Back Porosity:
Molten metal alloy impinging on the mold wall near the sprue, the hot spot caused in this region and freezes last. Since the sprue has already solidified, no more molten alloy is available and the resulting shrinkage causes suck-back porosity.
“Common challenges in preventing casting failures effectively: FAQs provided”
Remedies Cause Of Suck Back Porosity:
- Flaring of the point of sprue attachment.
- By reducing the temperature difference between the mold and the molten alloy.
Leave a Reply