Q: I recently moved to Massachusetts and was examined by a new dentist. She found several cavities on the chewing surface of some of my molars. Why did my long time, previous dentist miss all of these? I was just in his office a few months ago, just before moving.
- Sally in Malden, MA.
A: This is a dilemma we hear quite often. Generally, X-rays are useful for detection of chewing surface decay (occlusal caries) only after extensive lesions have developed that are very close to the nerve canals of the teeth. Over the past few years, electronic devices been developed to detect these cavities in much earlier stages. The Diagnodent uses a laser to read the bacteria levels produced by cavity-causing organisms. The Spectra system shows live images of teeth with the microorganisms fluorescing in red against a green background of the healthy enamel.
Dr. Wu practices Advanced Restorative Dentistry in Malden, Massachusetts. She is an extramural faculty member of the Boston University School of Dental Medicine, and a columnist in the Malden Observer Newspaper. Dr. Wu was awarded America's Top Dentists in 2009 and 2010 by the Consumer's Research Council of America. Dr. Wu can be reached at diana.pwudmd@verizon.net (781) 322-0131, or by visiting www.mymaldendentist.com
