In the anteroposterior bar major connector, the shape of the bars are:

  # In the anteroposterior bar major connector, the shape of the bars are:

A. Anterior bar – flat strap; posterior bar- half oval

B. Anterior bar – half pear shape; posterior bar- half pear shape

C. Anterior bar – half oval; posterior bar- flat strap

D. Anterior bar – flat strap; posterior bar- flat strap

The correct answer is A. Anterior bar – flat strap; posterior bar- half oval.

The anterior component is a flat strap located as far posteriorly as possible to avoid rugae coverage and tongue interference. The anterior border of this strap should be located just posterior to a rugae crest or in the valley between two crests. The posterior strap is thin, a minimum of 8 mm wide, and located

as far posteriorly as possible, yet entirely on the hard palate. It should be located at right angles to midline rather than diagonally.

Posterior palatal component: a strap of 22-gauge thickness, 8 to 10 mm wide (a half-oval form of approximately 6-gauge thickness and width) may also be used.

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