In Greek/Roman architecture, a dentil is one of the small, rectangular blocks resembling teeth that decorate the underside of a jutting roof ledge. Small details like dentils made the ancient stone and marble buildings so beautiful.
Spiritually: The apostle Paul says in 1 Corinthians 12 and 1 Timothy 2 that it’s not the outward show, or the obvious, that makes us beautiful to God (body shape, wealth, noticeable leadership skills), but what is usually small and hidden–kindness, obedience to God’s will, modesty at all levels, the “lowly” member who models Jesus Christ at work and at home (Matt. 10:42)—dentil