A 40 year old male patient complains of decayed tooth. Patient gives history of cavity preparation and restoration with mixture of spherical alloy particles and mercury done with 26. Intra-oral examination reveals proximal caries with 26. Which of the following is not the property of alloy particles used to restore the tooth in this patient?
Correct Answer: Decrease fluidity of the mixture
Description: It was demonstrated that by spherodizing the alloy particles, the particles packed more efficiently and required much less mercury to make a practical mixture. Spherical particles also increased the fluidity of the mixture by presenting less resistance to particle sliding. Using some or all spherical alloy particles, it is possible to reduce the mercury portion of the mixture to less than 50% by weight.
Reference: Sturdevant’s Art and Science of Operative Dentistry, Mosby, 4th Edition, Page No: 149
Category:
Dental
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now