Background: The dental radiograph is a two dimensional view for a three dimensional object present in the jaws , sometimes various objects like supernumery tooth, impacted tooth or foreign bodies present inside the jaws and are hidden from eyes causing problem to patient in the form of pain, swelling and vestibular obliteration. Object localization is a method used to locate the position of tooth or foreign object present inside the jaws. It is a small review on various techniques used in object localization and its use in dentistry.Materials and methods: about 33 patients with impacted upper canines in Baghdad smile clinics with the total of 45 cases using cone beam computerized tomography (CBCT) scan. used NewTom CBCT device in our research.so in the screen of the CBCT device we should select anatomical region of interest , and Select default position of the device.as well as to obtain high quality imaging we should plce the patient in correct position , the patient should be asked to place his/her incisor in the groove of the device , once the positioning parameters set we press on the exposure button until the device complete its 360 rotation aroud the head of the patient. Results: current study found that prevalence of impacted upper canine was much more in females than males 75.7% versus 24.3%; so the majority of patients were youthful compared to old patients. Palatally impacted canine was much more common than buccally impacted canine. Also the artifacts in our CBCT scanning like beam hardening, noise, blurry images, aliasing. Conclusion: CBCT scanning is easy and convenient method of localization to obtain accurate 3D images for impacted canines. also the patient seems more cooperative and more comfortable with CBCT device , It has less artifacts than conventional methods , But unfortunately it has more radiation dose than conventional methods.

Keywords: Localization Technique ; CBCT Scan ;Upper Canine; Orthodontic Treated Patients