Figure 6.

Comparison of images without and with tooth superimposition during the articulation of /asa/ and /ata/ in the two subjects (subject 1 and subject 2). Tracings were made before, during, and after maximum constriction (at 600 milliseconds for subject 1 and 690 milliseconds for subject 2) for the articulation of /s/ in /asa/ (a, b) and /t/ in /ata/ (c, d), without (a, c) and with (b, d) tooth superimposition, respectively. The time interval was set at 180 milliseconds. Clear contact/separation among the tip of the tongue, lips, and palate (shaded areas) can be observed with tooth superimposition in both subjects.