What was the recession measured at the gingival margins on teeth #8 and #9?

• A. 1 mm
• B. 2 mm
• C. 3 mm
• D. 4 mm

Answer: (B)

Gingival recession is quantified by the distance from the cementoenamel junction (CEJ) to the gingival margin. For teeth two central upper incisors, the measured distance at the facial aspect is two millimeters, meaning the gingival margin has moved apically by 2 mm from the CEJ. This standard measurement helps gauge severity and guide treatment. A 1 mm recession would indicate a shallower recession, while 3 or 4 mm would reflect more extensive recession, which isn’t the value described here. Therefore, two millimeters is the correct measurement.