Human tooth development the formation of odontoblasts continue from the tips of the cusps, the odontoblasts secrete a substance, an organic matrix, into their immediate surrounding. The organic matrix contains the material needed for dentin formation. As odontoblasts deposit organic matrix termed predentin, they migrate toward the center of the dental papilla. Thus, unlike enamel, dentin starts forming in the surface closest to the outside of the tooth and proceeds inward. Cytoplasmic extensions are left behind as the odontoblasts move inward. The unique, tubular microscopic appearance of dentin is a result of the formation of dentin around these extensions. After dentin formation begins,
Outermost Radio Outermost Radio Outermost Radio is a feature-length documentary, written and directed by Alan Chebot, that takes an intimate look at a community on the tip of Cape Cod, far from the mainland and out of the mainstream, committed to keeping their alternative non-profit community radio station WOMR on the air through adversity. Broadcasting from the outermost region of Provincetown, Massachusetts, WOMR reaches beyond locals and tourists, to a rapidly growing fan base around the world, redefining the very concept of community. "Outermost Radio" introduces audiences to the station’s passionate and unconventional volunteer staff as they fight to keep their freedom