What the evangelist churches did was not that different from what the Jesuits did for the catholic church, that is, they were sending their missionaries or itinerant preachers with the intention and goal of preaching and evangelizing people who lived in those areas.
The answer is Canon of Medicine or letter. Among the treatments written in this work were
teeth filling, toothaches as well as addressing oral cavity. It also discuss the functions and importance
of chewing and swallowing. They also
made a connection between oral symptoms and diseases.
