7th Grade - Standard Check #2 - Central Idea
Complete all of the following questions before submitting your test at the bottom of this page.
Read the text. Answer each question below on the line provided.
“The Straight History of Orthodontics”
1 Some people look forward to getting braces on their teeth, thinking they look cool. Other people grow morbid at the idea. These unwilling patients avoid visiting the orthodontist until resistance becomes futile. But anyone who benefits from the orthodontist’s trade today should be thankful for the progress this science had made over the centuries. In bygone days, many a butcher botched an attempt to remedy a problem that’s now easily cured. The pain that once made dental work notorious has been minimized by anesthesia, but it took some time for orthodontics to reach its present state.
2 Fossil remains of crooked human teeth and cluttered mouths date back tens of thousands of years. Greek and Roman texts describing the treatment of irregular teeth by the application of pressure date back as far as the fifth century BCE (before common era). Archaeological evidence indicates even earlier use of orthodontic appliances, including artifacts found in rich, lavish burial sites in ancient Italy. Another early attempt at braces may have been discovered on Egyptian mummies with dilapidated but recognizable metal bands around their teeth. The metal bands may have anchored elastic strings made of catgut. Thus, from at least 1000 BCE, it was known that teeth move in response to pressure.
3 Techniques for correcting dental irregularities did not advance until the eighteenth century. French dentists led the way to building orthodontic practice on scientific foundations from which it has not been dismantled. The greatest contribution came from Pierre Fauchard. In 1729, Fauchard published the first study of dentistry. In it, he described bandeau. It was used to expand the arch and correct crooked and crowded teeth. Fauchard described another process of straightening. He filed down a crooked tooth to create surplus space around it, then he repositioned the tooth with pliers. With the tooth in its proper position, he bound it to its neighbors and let it set. French and English dentists improved on Fauchard’s work through the eighteenth century.
4 Beneficiaries of Fauchard’s treatment may have been grateful when their work was complete, but no doubt many of them faced the prospect of treatment with fearful timidity and bellowed during the procedures. Indeed, these treatments must have been grueling without anesthesia. But evidently there were many Frenchmen who knew that you can’t make an omelet without breaking some eggs. Hundreds of patients flocked to Fauchard to pamper themselves and improve their looks with dental work.
5Pioneering European orthodontists introduced new techniques and instruments in the nineteenth century. Among them were the wire crib, the lever and screw, the chin strap, the use of rubber bands, and plaster models of patients’ teeth. By midcentury, the American economy was quite hospitable to innovation. American dentists began to take the lead in research and invention. Electricity revolutionized the operating room, and anesthesia made surgery less painful. Norman Kingsley pioneered treatments for cross bites and cleft palates. John Farrar developed guidelines for using screws to move teeth by applying force in short doses at regular intervals.
6 The twentieth century saw refinement in the materials and methods of orthodontics, but the fundamental principles of the science were developed during the days of Fauchard. The research performed between then and now has established orthodontics as a profession and opened the way for everyone to benefit from straighter teeth.
What is the central idea of the passage? (R.I. 1.2)
Orthodontics has progressed due to continual research and practices.
Orthodontic patients faced a variety of obstacles as practices were being refined.
The lack of anesthesia made orthodontic work very painful.
The study of orthodontics only began in the last 200 years
What two pieces of evidence support your answer to number 1? (R.I. 1.1)
Thus, from at least 1000 BCE, it was known that teeth move in response to pressure. (line 12)
Fossil remains of crooked human teeth and cluttered mouths date back tens of thousands of years. (line 7)
American dentists began to take the lead in research and invention (line 30-31)
Hundreds of patients flocked to Fauchard to pamper themselves and improve their looks with dental work. (26-27)
Which of the following would be a central idea for paragraph five? (R.I. 1.2)
Norman Kingsley and John Farrar developed techniques to remedy cross bites and to move teeth.
Many new orthodontic techniques were introduced in the 18th century.
New instruments of the century included the chin strap, plater models, and the wire crib.
A variety of new orthodontic techniques were implemented in the 19th century.
What is the definition of notorious as used in paragraph 1? (R.I. 2.4)
something people looked forward to
something widely known and feared
something involving a painful dental procedure
something not well known
Never submit passwords through Google Forms.
This content is neither created nor endorsed by Google.
Terms of Service