about que 2
(1) Shovel Shaped Incisors
In incisors, the marginal ridges may be especially prominent and enclose a deep fossa in the lingual surface. There are a variety of systems for grading this trait. Dahlberg and others subsequently have devised cast plaster plaques for standardized study.
The shoveling is most common in permanent and deciduous upper incisors, but can at times appear in lower incisors also. At times, the shoveling can create a pit on the lingual surface of central incisors.
The highest frequencies (greater than 90%) are found amongst Asians and Native Americans and lowest amongst Europeans. Shovel shaped incisors appear in Homo erectus, suggesting that this is a very ancient trait.
so it can increase the risk of caries but not of periodontal disease
about last que
u r missing some thing they are asking
which of following is not correctly match with it's activated precursor
activated precursor for glycogen is udp-glucose not only glucose