医疗健康类搜索引擎及目录索引

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牙科 Dentistry：

4smile.com - Dental directory offering patients the ability to search for dentists by location, name, and specialty. Also offers patient education, dental links, news and continuing education
information for the dental professional.

Accessible Dental Directory - Directory of dentists and dental offices worldwide.

DDS4U - Dentist directory which contains the dentists that are right for you.

Dental Related Resources - Directory of Dental sites on the web.

Dental Resources - Sink your teeth into this resource.

SmileFinder.com - Directory of US and Canadian dentists. Look up education, license, credentials, and more.