Shut SMS #42

Rabbi Aviner answers hundreds of text message questions a week. Some appear in the parashah sheets "Ma'ayanei Ha-Yeshu'ah," "Olam Ha-Katan" and "Be-Ahavah U-Be-Emunah." Here's a sample:
Q: Are braces or a retainer milchig or flieshchig?
A: No, because one does not generally put burning hot food into his mouth which would transfer the taste.
Q: The Torah says that Yishmael would be a wild man. Doesn't this take away his free will?
A: No, it was an inclination and it was possible to overcome it. In fact, Yishmael repented in the end.
Q: Does Vaseline for one's lip require kosher certification?
A: No.
Q: When I finish basic training should I recite Shehechiyanu?
A: Yes, at the ceremony because it is great news.
Q: At the swearing in ceremony for Tzahal should I say "I swear allegiance" or "I declare allegiance"?
A: The basic halachah is that one can swear since you certainly will not commit treason and violate the oath, but because of the severity of the laws of oaths, you should declare.
Q: There is a Sefer Torah being donated to the shul but my wife wants me to stay at home. Which is preferable?
A: Home, since the Torah has many people to bring it joy, and your wife only has you.
Q: My mother does not have enough money and I am a student. What should I do?
A: Stop your studies and work. Do you want that strangers should provide your mother with a living?