Round 9: Tossup 8

These body parts are partly created by ameloblasts, whose activity creates tree-ring-like striae of Retzius. Bacteria that grow on these body parts like Streptococcus mutans are particularly destructive toward their cementum. A (15[1])hook-shaped WHO probe is used to measure the depth of the sulcus between these body parts and the surrounding (*) gingival tissue. These (10[1])body parts’ deciduous type erupt during infancy and are typically lost before adulthood. Sugar-fermenting bacteria form a biofilm called plaque on these (10[1])body parts (10[2])and can demineralize their enamel. For 10 points, name these body parts including incisors, canines, and molars. ■END■

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