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Klu. 288.

Fig. 288. The lower bicuspids and first and second molars, showing gingival third decays in the
buccal surfaces. Groups of cavities such as are shown are very liable to occur together, though they
may occur singly or in smaller groups.
Fig. 289. The same case as the above after treatment, showing the outline form of the prepared
cavities with the extension to the angles and below the free margins of the gums.