The first bristle toothbrush resembling the modern one was found in China.[15] Used during the Tang dynasty (619–907), it consisted of hog bristles.[16] The bristles were sourced from hogs living in Siberia and northern China because the colder temperatures provided firmer bristles. They were attached to a handle manufactured from bamboo or bone, forming a toothbrush.[7] In 1223, Japanese Zen master Dōgen Kigen recorded in his Shōbōgenzō that he saw monks in China clean their teeth with brushes made of horsetail hairs attached to an oxbone handle. The bristle toothbrush spread to Europe, brought from China to Europe by travellers.[17] It was adopted in Europe during the 17th century.[18] The earliest identified use of the word toothbrush in English was in the autobiography of Anthony Wood who wrote in 1690 that he had bought a toothbrush from J. Barret.[19] Europeans found the hog bristle toothbrushes imported from China too firm and preferred softer bristle toothbrushes made from horsehair.[7] Mass-produced toothbrushes made with horse or boar bristle continued to be imported to Britain from China until the mid 20th century.[6]
The first bristle toothbrush resembling the modern one was found in China.[15] Used during the Tang dynasty (619–907), it consisted of hog bristles.[16] The bristles were sourced from hogs living in Siberia and northern China because the colder temperatures provided firmer bristles. They were attached to a handle manufactured from bamboo or bone, forming a toothbrush.[7] In 1223, Japanese Zen master Dōgen Kigen recorded in his Shōbōgenzō that he saw monks in China clean their teeth with brushes made of horsetail hairs attached to an oxbone handle. The bristle toothbrush spread to Europe, brought from China to Europe by travellers.[17] It was adopted in Europe during the 17th century.[18] The earliest identified use of the word toothbrush in English was in the autobiography of Anthony Wood who wrote in 1690 that he had bought a toothbrush from J. Barret.[19] Europeans found the hog bristle toothbrushes imported from China too firm and preferred softer bristle toothbrushes made from horsehair.[7] Mass-produced toothbrushes made with horse or boar bristle continued to be imported to Britain from China until the mid 20th century.[6] Mintcafe 发表于 2024-02-25 13:03
唐朝时期，西藏 并不属于中国。 五代十国，西藏 并不属于中国。 使用牙线对于清洁牙齿之间和牙龈线下方的狭小空间是必要的。我们今天所知道的牙线是在大约 200 年前发明的。 1815年，一位名叫利维·斯皮尔·帕姆利（Levi Spear Parmly）的美国牙医提出了使用蜡丝线作为牙线的想法。(牙刷是不够的，牙膏也不是必需的。) "the devil is in the details", lol 被问到的问题是 "如果穿越回古代，哪些事是不能忍的" 所以在唐朝之前也可以。 汉朝也可以哈哈。 石器時代也可以哈哈。
再过几十上百年之后估计家庭就消亡了，都是试管婴儿，不需要结婚那种。也可能机器人已经智能到持家了，所以人类两极化，上层人巨富工作控制社会能够长生不老（广义上的能活好几百年那种）。下层人活在虚拟现实里面被当猪养起来，需要美女帅哥AI走起。
皇帝都没有现代一个普通中产过的舒服，工作辛苦高风险。
按照前面自力更生的理论，此处可以自己酿青霉素，提炼吗啡，拯救万千大众，若是赶上乱世，必是万古流芳的神医
古代士大夫认为喝凉水会死人，凉水有毒。所以串门要上茶，他们只喝开水泡的茶
因为水源不一定干净啊，一场瘟疫以后，只有喝烧开的水的人才活了下来，大家就学聪明了。
牙刷倒不用担心，中国人发明的，唐代就有，关键是牙膏 https://en.wikipedia.org/wiki/Toothbrush
说不定几百年后的人还不如我们呢，各种天灾战争。现在说不定就是最好的时代！
被问到的问题是 "如果穿越回古代，哪些事是不能忍的"
1780 年，威廉·阿迪斯 (William Addis) 发明了我们现在所知的现代牙刷。他将猪鬃固定在一个由牛骨制成的特殊雕刻的手柄上。 1844 年，当第一个三排刷子问世时，Addis 的设计得到了进一步发展。
所以在唐朝之前也可以。
汉朝也可以哈哈。
石器時代也可以哈哈。
牙刷比牙膏更重要: 牙刷是刷牙时最重要的工具。牙膏只是一个补充。虽然牙膏制造商声称您需要牙膏才能刷牙，但事实并非如此。牙膏并不是保持牙齿清洁或健康所必需的。(source: google search)
很多牙膏都含有月桂基硫酸钠（SLS）、阿斯巴甜和塑料微珠等有害成分。许多患者在不知不觉中使用牙膏，实际上对牙齿造成了伤害。 https://www.grandstreetdental.com/toothpaste-friend-or-foe/
我小时候见过我奶奶裹的小脚，真的是惨无人道呀
The first bristle toothbrush resembling the modern one was found in China.[15] Used during the Tang dynasty (619–907), it consisted of hog bristles.[16] The bristles were sourced from hogs living in Siberia and northern China because the colder temperatures provided firmer bristles. They were attached to a handle manufactured from bamboo or bone, forming a toothbrush.[7] In 1223, Japanese Zen master Dōgen Kigen recorded in his Shōbōgenzō that he saw monks in China clean their teeth with brushes made of horsetail hairs attached to an oxbone handle. The bristle toothbrush spread to Europe, brought from China to Europe by travellers.[17] It was adopted in Europe during the 17th century.[18] The earliest identified use of the word toothbrush in English was in the autobiography of Anthony Wood who wrote in 1690 that he had bought a toothbrush from J. Barret.[19] Europeans found the hog bristle toothbrushes imported from China too firm and preferred softer bristle toothbrushes made from horsehair.[7] Mass-produced toothbrushes made with horse or boar bristle continued to be imported to Britain from China until the mid 20th century.[6]
也有牙膏（宋），主要成分也是青盐 槐枝膏⋯⋯槐枝半斤（半寸锉），柳枝半斤（半寸锉），桑枝半斤（半寸锉）。制法上以水一斗，煎至三升，滤去滓，慢火熬膏，入后药末，青盐一两（研），芎（末）、细辛
宋代牙刷
我只想穿越去遥远的未来~
唐朝时期，西藏 并不属于中国。
五代十国，西藏 并不属于中国。
使用牙线对于清洁牙齿之间和牙龈线下方的狭小空间是必要的。我们今天所知道的牙线是在大约 200 年前发明的。 1815年，一位名叫利维·斯皮尔·帕姆利（Levi Spear Parmly）的美国牙医提出了使用蜡丝线作为牙线的想法。(牙刷是不够的，牙膏也不是必需的。)
"the devil is in the details", lol
被问到的问题是 "如果穿越回古代，哪些事是不能忍的"
所以在唐朝之前也可以。
汉朝也可以哈哈。
石器時代也可以哈哈。
男人其实更特么惨，古代可是有太监的
不用穿越，现在国内不是也还提倡这些观念
太监也不是相当就当的
做皇帝也太累了，🐔都没叫就得上朝，点蜡烛批奏折到很晚，还得长800个心眼子平衡各方势力。
真能穿越，肯定穿越到未来瞅一眼先呀，干嘛回古代？
一个日剧讲一个外科医生穿越回去江户时代用烂橘子提前发明了青霉素
穿越回古代才能遇见想遇见的人
做好心理准备，想遇见的人说不定让人失望。李白是个邋遢的酒疯子，秦始皇是个矮胖子，还有步步惊心里的几个阿哥一个比一个猥琐。
空气好也不一定有哈，电影小说里古代人动不动就不停咳嗽，基本就是个绝症，最后都无一例外会咳血而死。
喝开水是民国时才普及的知识。喝茶要开水泡的确客观上帮助我们中国人躲过了细菌，增加了寿命。西方人古代没有茶，走了另一条路：一早起来就开始喝啤酒，用酒精灭菌。
仁医，哈哈，那个剧很好看
普通老百姓不是不知道喝开水，主要没那多柴火