A Novel Approach to Repositioning and Stabilization of a Luxated Tooth With Displacement Using a 3D Printed Guide.

The management of traumatic dental injury aims at functional and esthetic rehabilitation. After luxation injury, a displaced tooth must be replaced into its normal position as soon as possible. Incorrect tooth repositioning can cause discomfort to the patient and compromise the outcome. This report documents a novel digital technology-based approach for the management of teeth following luxation injury with displacement. A 25-year-old female reported 2 days after traumatic dental injury to her maxillary right central incisor tooth #8. After clinical and radiographic examination, a diagnosis of lateral luxation of tooth #8 was made. The preoperative high-resolution cone-beam computed tomography (CBCT) image data set confirmed palatal luxation of tooth #8 with fractured and displaced labial cortical plate. The CBCT data were imported into a medical image processing software program, and a segmentation tool was used to segment the fractured cortical plate, luxated tooth, and alveolar process. The socket is reconstructed by realigning fractured cortical bone over the alveolar process and repositioning the tooth in the virtual planning software. A three-dimensional (3D) guiding template was designed over the repositioned tooth and adjacent teeth and printed. This 3D printed guide was used for the repositioning of luxated tooth #8 and stabilizing it during the splinting procedure. This technique of using CBCT and 3D guide for repositioning is an objective, precise, and predictable approach. The 3D printed model of the dental arch after virtual tooth alignment can be used by the dentist to determine the exact splint length and contour before splinting.

Incidentally Detected Hypermetabolism in Pons Suggestive of Pontine Myelinolysis on 18F-FDG PET/CT Scan.

ABSTRACT: Central pontine myelinolysis (CPM) is demyelinating condition of pons caused by osmotic stress due to rapid correction of hyponatremia. We present a case where CPM was an incidental finding on FDG PET/CT scan. To the best of our knowledge, only 3 case reports have been published till date describing CPM on 18F-FDG PET/CT scans.

Incidentally Detected 18F-PSMA Uptake in Glomus Jugulare.

PSMA (prostate-specific membrane antigen) PET/CT scan is the imaging modality of choice for staging and restaging of carcinoma prostate. Although initially thought to be a tracer with high specificity for prostatic tissue, with its extensive clinical use, there has been a rise in published literature citing its uptake in nonprostatic conditions. We present a case where false-positive PSMA uptake was noted in glomus jugulare during staging workup for carcinoma prostate.

Migrated esophageal stent posing a challenge for ventilation.

Self-expandable esophageal stents are being commonly used for palliative treatment in advanced esophageal cancer patients to relieve dysphagia, prevent tracheoesophageal fistula, and facilitate symptomatic betterment. The modern covered stents reduce the ingrowth of the tumor but have seen an increase in the incidence of stent migrations. We report a rather complicated presentation of an esophageal stent for esophageal dilatation and a challenging management of a difficult tracheostomy.