An easy to install tooth spreading and uprighting device that is positioned on a temporary basis across an edentulous space between a pair of teeth in the mouth of a dental patient to correct and prevent the teeth from tipping and loosing their upright alignment which awaiting the implantation of a dental crown. The size of the tooth spreading and uprighting device is selectively adjustable depending upon the spacing between the patient's teeth so as to establish a tight fit and thereby apply a suitable holding pressure to prevent a misalignment of the teeth while awaiting the installation of the dental crown to replace a natural tooth which has been removed from the patient's mouth. The size of the tooth spreading and uprighting device is selectively adjustable by an inner body that is received within and slidable axially through a hollow outer body. An optional locking feature is provided to prevent a displacement of the inner body relative to the outer body.