That colleague who always brushes his teeth after lunch in the office bathroom? A published study suggests that scrubbing immediately after eating may be doing him more harm than good. While professional opinions may vary, Delaware dentist Jeffrey M. Cole, former president of the Academy of General Dentistry, a dental advocacy group, weighs in on this topic.

Cavity Culprits

• professional [prə´feʃənəl]   a.职业的 n.自由职业   (初中英语单词)
• academy [ə´kædəmi]   n.专科学校；学会；协会   (初中英语单词)
• cavity [´kæviti]   n.洞，窝；(人体)腔   (高中英语单词)
• colleague [´kɔli:g]   n.同事，同僚   (英语四级单词)
• bathroom [´bɑ:θrum, -ru:m]   n.浴室；盥洗室   (英语四级单词)
• dentist [´dentist]   n.牙科医生   (英语四级单词)
• dental [´dentl]   a.牙齿的；牙科(用)的   (英语六级单词)