AbstractIn 2004, it is 100 years since the experiments by Carl Sandstedt on tissue changes during orthodontic tooth movement were published in an international journal, shortly after his early death.KeywordsDental historyorthodonticstooth movementReferences1. Sandstedt CE . Några bidrag till tandregleringens teori. Stockholm: Kungl Boktryckeriet/Nordstedt & Söner, 1901.2. Sandstedt C Einige Beiträge zur Theorie der Zahnregulierung. Nord Tandl Tidskr 1904; 5: 236–56; 1905, 6: 1–25; 6: 141–68.3. Spångberg C. Carl Sandstedt—en biografi (in Swedish). Nord Medicinhist Årsbok 1992; 159–70.