Iowa Code Title IV. Public Health [Chs. 123-158] § 153.13. “Practice of dentistry” defined

1. Persons publicly professing to be dentists, dental surgeons, or skilled in the science of dentistry, or publicly professing to assume the duties incident to the practice of dentistry.

2. Persons who perform examination, diagnosis, treatment, and attempted correction by any medicine, appliance, surgery, or other appropriate method of any disease, condition, disorder, lesion, injury, deformity, or defect of the oral cavity and maxillofacial area, including teeth, gums, jaws, and associated structures and tissue, which methods by education, background experience, and expertise are common to the practice of dentistry.

3. Persons who offer to perform, perform, or assist with any phase of any operation incident to tooth whitening, including the instruction or application of tooth whitening materials or procedures at any geographic location. For purposes of this subsection, “tooth whitening” means any process to whiten or lighten the appearance of human teeth by the application of chemicals, whether or not in conjunction with a light source.