Hi. I'm Dr. Lee and will do my best to help.
Yes you can use Ciprodex for dog ears. I would suggest to apply that twice a day. Do not, however, use the relief drops. With ears being inflamed, it might not be just a bacterial infection. Dogs often get yeast infection as well which requires special medication from your veterinarian. So for now you can use Ciprodex, but you need to take him to your veterinarian as soon as possible.
Please let me know if you have any questions or concerns. Thanks.