Evaluation and Comparison of Root Proximity of Maxillary and Mandibular Interradicular Sites for Mini Implant Placement Using Orthopantomogram and Cone Beam Computed Tomography

Abstract

The purpose of this study is to evaluate and compare the root proximity of maxillary and mandibular inter radicular sites using orthopantomogram (OPG) and cone beam computed tomograph (CBCT) for the primary stability of mini implants. The cone beam computed tomographic images and orthopantomographic images of 70 subjects were taken. The interdental sites from distal of canine to mesial of second molar are examined for root proximity. The root proximity was measured at four levels from cementoenamel junction in 70 CBCT and OPG images. The results showed a statistically significant difference between the values obtained from CBCT and OPG images; the root proximity was least 6mm above the cementoenamel junction in maxilla and mandible in the range of 1.09–3.62mm, 1.45–4.17 mm respectively. The study concluded that CBCT images are more accurate and reliable. At 5mm from CEJ in the region between the first molar and second premolar in maxilla and in the area between first molar to first premolar in mandible the root proximity is least and adequate for mini implant placement.