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Brushing Teeth on Shabbat: Difference between revisions

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==Brushing Teeth on Shabbat==
==Brushing Teeth on Shabbat==
===Mimareach===
===Mimareach===
The Mishnah is [[Shabbat]] (73a) lists Memachek as one of the avot melacha-scraping, removing a surface to leave a smooth remainder (sandpaper, scraping hairs off a piece of leather to make it smooth)
The Mishnah is [[Shabbat]] (73a) lists [[Memachek]] as one of the avot melacha-scraping, removing a surface to leave a smooth remainder (sandpaper, scraping hairs off a piece of leather to make it smooth)
Mimareach-smoothing not by eliminating surface, but by spreading something over the surface. <ref> (Rambam Hilchot [[Shabbat]] 11:5,6) </ref>
Mimareach-smoothing not by eliminating surface, but by spreading something over the surface. <ref> (Rambam Hilchot [[Shabbat]] 11:5,6) </ref>
*Rav Moshe Feinstein <ref> (Shu"t Iggerot Moshe Orach Chaim, 1:112) </ref> says that it’s definitely forbidden to use toothpaste because of mimachek, but without toothpaste it is allowed just like washing the rest of your body. Seemingly, Rav Moshe meant mimareach the toladah of mimachek. It is also possible that he meant mimachek in that you’re smoothing out your teeth by removing the plaque. Rav Soloveitchik <ref> (Nefesh harav 168) </ref> said removing dirt or plaque is certainly not mimachek just like washing dishes is permissible. Mimachek is only when you’re removing something that is part of the essence of the object itself and plaque isn’t that. So they asked him maybe you remove enamel by brushing and he said that if that were true eventually you would have no tooth left from brushing.  
*Rav Moshe Feinstein <ref> (Shu"t Iggerot Moshe Orach Chaim, 1:112) </ref> says that it’s definitely forbidden to use toothpaste because of mimachek, but without toothpaste it is allowed just like washing the rest of your body. Seemingly, Rav Moshe meant mimareach the toladah of mimachek. It is also possible that he meant mimachek in that you’re smoothing out your teeth by removing the plaque. Rav Soloveitchik <ref> (Nefesh harav 168) </ref> said removing dirt or plaque is certainly not mimachek just like washing dishes is permissible. Mimachek is only when you’re removing something that is part of the essence of the object itself and plaque isn’t that. So they asked him maybe you remove enamel by brushing and he said that if that were true eventually you would have no tooth left from brushing.