Increase of enamel fluoride retention by low fluence argon laser beam: a 6-month follow-up study in vivo.

Background And Objectives: The aim of this 6-month in vivo study was to investigate if argon laser irradiation of enamel can increase the retention of fluoride.

Study Design/materials And Methods: Ninety-eight teeth in 12 patients were randomly divided into three groups: (1) EF group: 40 teeth were only treated with fluoride gel (applied for 5 minutes followed by a 1 minute rinsing with distilled water). (2) EFL group: 40 teeth were treated the same way as in the EF group but they were lased after fluoridation.

Increase of enamel fluoride retention by low fluence argon laser in vivo.

Background And Objectives: The aim of this in vivo study was to investigate if argon laser irradiation of enamel can increase the retention of fluoride.

Study Design/materials And Methods: Ninety-eight teeth in 12 patients were randomly divided into three groups: (1) EF group: 40 teeth were only treated by fluoride gel (application for 5 minutes followed by 1 minute rinsing with distilled water). (2) EFL group: 40 teeth were treated the same way as in the EF group but they were lased after fluoridation.

[Contribution of one century of X-rays to medicine].

In order to commemorate the centenary of the attribution of Nobel prizes in sciences, we present in this article a short description of the interaction of X-rays with materials and a bibliography of 33 Nobel prize winners (6 for medicine, 18 in chemistry and 9 in physics) whose work is connected to applications of X-ray interactions for medical and pharmaceutical purposes, and additionally of 12 Nobel prize winners in physics for their initiative in the discovery of particles which were recently used for medicine.