Dental sealants are now big business within the dental community.
Consequently, ADA must maintain its impartiality regarding sealant safety until all of the data can be gathered and analyzed. ADA's apparent lack of objectivity undermines its credibility and the credibility of the studies it sponsors. I was fortunate enough to have attended the meeting where David R. Williams presented the work on achieving better imaging by warping optics, and I am not at all sanguine about this leading to promising improvements in patients' vision through the development of new types of spectacles or contact lenses. Among other things, these new elements add their own source of optical aberration. Glasses may slide down the nose to different positions, for example, or contact lenses may rotate or float on tear films of different thickness.