The invention concerns a dental care apparatus and an accessory arm to be connected to the dental care apparatus. In the dental care apparatus, at least one connector construction is arranged for an accessory arm, which connector construction contains a means to releasably connect the arm such that either only a mechanical connection is formed or such that both a mechanical and an electric connection is formed between the arm and said connector construction. Respectively, a means to mechanically and electrically connect the arm to the dental care apparatus is arranged in the accessory arm, which means is realized in a quick-connector type fashion to enable connection of the arm without using tools.
