Fig. 5From: The inflection point: a torque reference for lingual bracket positioning on the palatal surface curvature of the maxillary central incisorThis figure lists in six steps the procedures that were done to calculate the exact location of the inflection point on PSC as well as its torque angle value. All the equations mentioned here are found in Fig.Ā 3 and the specially formed Excel spreadsheet mentioned in the legend of Fig.Ā 4 allowed all the procedures listed here to be doneBack to article page