The invention relates to a medical laser treatment module, which comprises a laser radiation source for generating a fundamental wavelength μ1 and which is highly variable in use. According to the invention, the medical laser treatment module is characterized in that it comprises at least one means (2, 3) for generating laser radiation of another wavelength μ2, μ3 and at least one means for optionally injecting the laser radiation of the fundamental wavelength μ1 into the means for generating the wavelength μ2, μ3. The laser module designed in such a manner can be used, in particular, in dentistry and both as an integratable module and as a fixed component of a treatment unit.