Table 2.

Summary statistics for combined measures DEJ width estimates.

Measure	Method 1 (μm)				Method 2 (μm)
	Mean	Std. Err.	95% CI	Std. Dev.(1)	Mean	Std. Err.	95% CI	Std. Dev.(1)
Indentation	6.4′	0.63	4–9	1.8	4.6	0.60	2–7	1.1
Raman	7.8	0.86	4–11	2.9	8.3	0.74	5–12	2.7

⁽¹⁾The Standard Deviation (Std. Dev.) was computed using measured DEJ widths. Other measures were computed using widths estimates that employed a linear model which adjusted for multiple measurements on the same tooth and combined measurements using the same instrumentation device (hardness and modulus or Raman 960 cm⁻¹ and 2900 cm⁻¹ peaks).