1)
Why did he ask Hashem to destroy their teeth?
1.
Radak: The previous Mizmor said "their teeth are a spear and arrows" (57:5). Destroy their teeth, so they cannot harm via them!
2.
Malbim: He compares their Leshon ha'Ra to teeth in which vicious beasts hold their prey. If the teeth are broken, they cannot hold their prey, even if it is already in their mouths.
2)
What are "Malte'os"?
1.
Rashi: They are the inner teeth.
2.
Radak: They are the big teeth.
3.
Malbim: They are the teeth in which lions hold their prey tightly.
3)
Why did he compare them to young lions?
1.
Radak: They tear like young lions.
