Modern Dentistry is a magazine that appears in the episode "The Whole Tooth."
The cover of the magazine features an image of an old fish smiling with rather large uncleaned teeth. The magazine itself is swampy brown in color. The words "Modern Dentistry" is written at the top with "Aug. 1782" written on the left side and "Weekly" written on the right side.
Role in the episode
The magazine is seen sitting on a table in the dentist office during SpongeBob and Patrick's visit. Patrick is getting nervous and he picks up the copy of Modern Dentistry. However, the fish on the cover frightens Patrick and he tosses it back on the table. The magazine appears to not been read in a long time as Patrick blew away large amounts of dust off it.
The fish on the cover is wearing clothes and a wig in a similar style to various men during the 1700s, most notably like Mozart's hair and clothes.