"很好的牙医"用英文可以翻译为"a great dentist"。

"Great"是形容词，意思是"很好的、优秀的"。

"Dentist"是名词，意思是"牙医"。

下面是几个例句：

I have a great dentist. He is very gentle and always makes sure I'm comfortable during my visits. 我有一个很好的牙医。他很温柔，并且在我看牙的时候总是确保我感到舒服。
My sister recommended a great dentist to me. She said he did an excellent job fixing her cavities. 我姐姐向我推荐了一个很好的牙医。她说他修补她的蛀牙做得非常好。
I'm looking for a great dentist in the area. Do you have any recommendations? 我正在寻找当地的一个很好的牙医。你有什么建议吗？

希望这些例句对你有帮助。