신경치료는 언제 개발되었냐?

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우리 할매 옛날에는 그런치료 없었다는데...
대략 몇 년대 부터 시작됨?

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알빠노 좆같은진료

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19세기부터 있었음

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흠~

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In 1838, the first root canal therapy tool was invented by American Edwin Maynard, who created it using a watch spring. In 1847, a filling material called gutta percha was first used to fill root canals, a method still practiced to this day.

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마취약이 발전하면서 대중화됐겠지. 마루타실험이,,,,