The sprue in wax pattern should be placed________________?
Correct answer: B. At 45°C angle
- A. At right angle
- B. At 45°C angle
- C. At obtuse angle
- D. It depend upon type of wax pattern
Explanation
A sprue is generally attached at about 45 degrees to promote smooth metal flow and reduce turbulence at the pattern junction. The option's “45°C” is a typographical error for a 45-degree angle.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Metals and Alloys
125 free Metals and Alloys MCQs from Dental Materials, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Dental Materials questions like this
Dental Materials is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Metals and Alloys questions
18-B Stainless steel orthodontic wire has_______________?
Disadvantage of having a short sprue is________________?
Gases dissolved in molten metals are liberated when cooled giving rise to________________?
Gold content of an 18 carat alloy is______________?
Titanium casting is done_____________?
Heat hardening is the process done at_______________?