ABSTRACT
<p><b>OBJECTIVE</b>This study aims to investigate the diagnosis and treatment of external root resorption of adjacent teeth caused by impacted teeth via cone-beam computed tomography (CBCT).</p><p><b>METHODS</b>A total of 19 teeth from 15 patients with uncertain external root resorption caused by an adjacent impacted tooth were examined from January 2011 to December 2011. All teeth with uncertain external root resorption were scanned by CBCT. Three dimensions reconstruction were the conducted to determine the location and extent of resorption.</p><p><b>RESULTS</b>In all cases, CBCT identified the accurate location and extent of external root resorption caused by adjacent impacted teeth. Furthermore, the technique provided impacted teeth location in three dimensions, including the relation between the impacted teeth and surrounding vital structures.</p><p><b>CONCLUSION</b>CBCT can provide direct and accurate images of the location and extent of external root resorption, as well as the location of the adjacent impacted teeth in three dimensions. Therefore, the proposed technique provides reliable information for clinical diagnosis and treatment.</p>
Subject(s)
Female , Humans , Male , Cone-Beam Computed Tomography , Cuspid , Maxilla , Root Resorption , Tooth, ImpactedABSTRACT
@#ObjectiveTo observe the effect of Nd∶YAG laser combined with enamel cement on dentine hypersensitiveness (DH).Methods120 DH cases (totally 182 teeth) were randomly divided into two groups. The experiment group (92 teeth) was treated with Nd∶YAG laser and enamel cement. The control group (90 teeth) was only treated with Nd∶YAG laser.ResultsEffective rates of the experiment group at the moment of treatment, 3 months and 6 months after treatment were 97.8%, 96.7% and 90.2 % respectively, and that of the control group were 95.6%, 91.1% and 84.4%. There was a significant difference between two groups (P<0.05).ConclusionNd∶YAG laser combined with enamel cement has an obvious effect on DH.