- 1
Dentistry is two things at once, and English uses one word for both: the medical study of the mouth and teeth, and the work a dentist does. A student can spend years at university on dentistry before they may treat people on their own; after that, the filling, the cleaning, the pulling of a bad tooth, the false teeth, the sore gums — that is dentistry too.
Dentistry is two things at oncedentistry同時是兩件事， and English uses one word for both英文用同一個字講這兩件事： the medical study of the mouth and teeth, and the work a dentist does一個是研究口腔和牙齒的醫學，一個是牙醫做的工作。 A student can spend years at university on dentistry before they may treat people on their own學生可能要在大學讀好幾年dentistry才能自己看病人； after that, the filling, the cleaning, the pulling of a bad tooth, the false teeth, the sore gums — that is dentistry too之後，補牙、洗牙、拔壞牙、做假牙、處理牙齦痛——這些也都叫dentistry。
Though actually a lot of modern dentistry is about stopping trouble early, not only fixing pain when it is already bad.
Though actually不過其實， a lot of modern dentistry is about stopping trouble early現代dentistry很多重點是及早預防問題， not only fixing pain when it is already bad不只是等問題已經很糟了才修。
The word itself feels a bit official. In everyday talk, people say 'the dentist' or 'the dental clinic,' not 'I have an appointment for dentistry.' You study dentistry; you visit the dentist.
The word itself feels a bit official這個字本身感覺有點正式。 In everyday talk日常對話裡， people say 'the dentist' or 'the dental clinic,'大家會說「the dentist」或「the dental clinic」， not 'I have an appointment for dentistry.'不會說「我約了dentistry」。 You study dentistry; you visit the dentist你讀的是dentistry；你去看的是dentist。
原始詞典資料4 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
dentistrynoun/ˈdɛntɪstɹi/
- 1
The field of medicine concerned with the study, diagnosis, and treatment of conditions of the teeth and oral cavity.
- Some provision should be made for the truly suffering poor, and also for our present students of dentistry to learn something about dental surgery before commencing a profession which has almost become a science.
- A corporation may not operate a dentistry office unless all of its stockholders are licensed to practice dentistry.
- 2
Operations performed on teeth and adjoining areas such as drilling, filling cavities, and placing crowns and bridges.
- POOR Australians are resorting to do-it-yourself dentistry, including filing their own teeth and attempting their own extractions, because of lengthy queues for public dental services.
- This patient is an out-of-town physician who had to wait until retirement to complete his dentistry. He had holding pattern type dentistry done to get him by.
- 3
A dental surgery, an operation on the teeth.
- Dr. Landsberg, of Posen, states that when children's teeth are put in order by means of school dentistries, anaemia, one of the most frequent school diseases, will be greatly diminished.
- I speak now only of your pet's bad breath. Dentistries will specifically improve the oral health of the pet as well as its overall health in the long term.
- 4
A place where dental operations are performed.
- They are very fond of sweet things; and the ladies especially crowd the “candystores,” which are not less numerous than the dentistries—with which business they are intimately connected.
- The author could dilate at great length on the possibilities in plant groceries, restaurants, and dentistries.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。