[A critical and ironic instant in science and attitude of health personnel].

Smoking habits have a negative impact on general health and are detrimendous for teeth, dental implants, periodontal and peri-implant tissues. In this paper, however, a critical note is placed based on a comparison of the current evidence based knowledge with scientifically sound communications dating 1946. It seems that not only science has turned its own conclusions upside down but also health care workers and dentists have changed their opinion regarding smokers enormously. Some reflection and relativism should be taken into account when dentists are planning dental care in smoking patients.