1. 201-RS-01 Dentistry History Dra. Bertha Carrillo

4. Oral disease has been a problem for humans since the beginning of time. Skulls of the Cro-Magnon people, who inhabited the earth 25,000 years ago, show evidence of tooth decay. The earliest recorded reference to oral disease is from a Sumerian text (circa 5,000 B.C.) that describes "tooth worms" as a cause of dental decay.

5. ANCIENT ORIGINS 5000 BC - A Sumerian text of this date describes “tooth worms” as the cause of dental decay. 2700 BC - Evidence that the Chinese used acupuncture to treat pain associated with tooth decay

6. 2600 BC - Death of Hesy-Re, an Egyptian scribe, often called the first “dentist.” An inscription on his tomb includes the title “the greatest of those who deal with teeth, and of physicians.” This is the earliest known reference to a person identified as a dental practitioner. 500-300 BC—Hippocrates and Aristotle write about dentistry, including the eruption pattern of teeth, treating decayed teeth and gum disease, extracting teeth with forceps, and using wires to stabilize loose teeth and fractured jaws.

7. 166-201 AD—The Etruscans practice dental prosthetics using gold crowns and fixed bridgework. 700—A medical text in China mentions the use of “silver paste,” a type of amalgam. 1130-1163—Barbers often assisted monks in their surgical ministry because they visited monasteries to shave the heads of monks and the tools of the barber trade— sharp knives and razors—were useful for surgery.

8. 1210—A Guild of Barbers is established in France. Barbers eventually evolve into two groups: surgeons who were educated and trained to perform complex surgical operations; and lay barbers, or barber- surgeons, who performed more routine hygienic services including shaving, bleeding and tooth extraction. 1575—In France Ambrose Pare, known as the Father of Surgery, publishes his Complete Works. This includes practical information about dentistry such as tooth extraction and the treatment of tooth decay and jaw fractures.

9. 1685 First dental textbook to be published in English, by Charles Allen, "The Operator for Teeth". 1785 John Greenwood served as George Washington's dentist, and helped raised public awareness about porcelain teeth. 1790—John Greenwood,, constructs the first known dental foot engine. He adapts his mother’s foot treadle spinning wheel to rotate a drill

10. 1816 - Auguste Taveau, Paris, developed first dental amalgam (fillings from silver coins mixed with mercury). 1832—James Snell invents the first reclining dental chair. 1839 Charles Goodyear discovered vulcanized rubber. This discovery made denture bases, previously made out of gold, affordable for the average person. Before that time, dental care was typically reserved for the upper class.

11. 1839—The American Journal of Dental Science, the world’s first dental journal, begins publication. 1840 Dentist Horace Wells first demonstrated nitrous oxide for sedation. 1840 Dentist Thomas Morton first demonstrated ether anesthesia for surgery

12. 1840 Horace Hayden and Chapin Harris invented modern dentistry. They founded the first dental school in the world, the Baltimore College of Dental Surgery. Also invented the modern doctorate of dental surgery (DDS) degree and started the world's first dental society, the American Society of Dental Surgeons (ASDA), which eventually formed into the American Dental Association. 1871 -The first electric dental engine, a self-contained motor and handpiece

13. 1890s American dentist Willoughby Miller in Germany first described the microbial basis of dental cavities. 1895 Wilhelm Roentgen discovered x- radiation (x-rays). 1895 G.V. Black standardized both cavity preparation and manufacturing process of silver fillings. Set of dentures made for George Washington by John Greenwood, 1798.

14. 1903—Charles Land devises the porcelain jacket crown. 1929 Penicillin was invented. This had a major impact on treatment protocols for dental infections. 1945 Grand Rapids, MI, first city in the world to fluoridate drinking water. 1955 Michael Buonocore invented white (composite) fillings. He also described a method of bonding resin to tooth enamel, enabling dentists to repair cracked enamel on front teeth.

15. 1957 John Borden invented a high speed air-driven hand piece, increasing drill power from the traditional 5,000 rpm to 300,000 rpm, which shortened the time to prepare a tooth for a filling to a matter of minutes. 1970 Electric toothbrush introduced in the United States. 1970's Sit-down, "four-handed" dentistry became common. Most dentists have dental assistants helping with procedure.

17. Future of Dentistry Integrating dentistry into comprehensive health care. Increased focus on the link between oral health and overall health. Gene-mediate therapeutics, which means altering the genetic structure of teeth to make them impervious to decay. Some researchers are now investigating the possibility of growing new tooth structure around weakened enamel. Increased knowledge base and computer-assisted technology approach for diagnosis and treatment. Community-based health promotion for oral health care.

18. The History of Dental Care: The First Dental Floss Anthropological evidence shows that ancient man showed a concern for his teeth, or at least a concern for the discomfort that food lodged between the teeth can cause. Grooves on the teeth of ancient man shows that dental picks and dental floss were used even in antiquity. The very first dental floss on record was actually created from silk. Then nylon string came along. The wax coated floss we’ve come to know and love these days came about through the Johnson and Johnson manufacturing conglomerate.

19. Para que se uso este instrument?

20. History of Dental Care: Toothpaste The first known toothpastes in the western world contained regular soap for cleaning, and date back to the 1800s. In China, however, historians believe that toothpaste was in use in some way, shape or form as early as 500 BC. Luckily, the harsh soap was replaced some hundred years after to include emollients and baking soda as scrubbers, reducing the horrible gag reflex the soap caused. The Colgate Company was the first manufacturer of modern toothpaste, and is still a leading producer in the field today. In fact, if you visit your local dentist, you’re likely to receive a tube of Colgate toothpaste before leaving the office

21. False Teeth in the History of Dental Care While a good set of artificial choppers is still hard to come by these days, historians say that artificial sets of teeth were carved from animal bones as early as 700 BC! We no longer have to chew with bones borrowed from animals; today’s false teeth are made from modern man-made materials that hold up well to years of munching and crunching. Since there are probably going to be children reading this, stick to the ‘cleaner’ version of dental history – as there are a few sordid stories in its history. After all, we adults don’t like having our mouths washed out with soap either! Brush and floss!

22. Dental drill

27. What will these instrument?