where are these spots you can see?? the next teeth that generally come through next are the top two followed by two bottom ones either side of the first bottom ones. but having said that all kids are different and teeth come through where ever and whenever the want!
as for cleaning my DD who has no teeth yet chews on a baby toothbrush everynight int he bath and has done for a few months now! we also brush her gums so she gets used to it