comparative evaluation of esthetic outcomes of pmma temporary crowns fabricated digitally using cbct and intraoral scanners for full mouth rehabilitation a double blinded crossover clinical trial

Abstract

Background newlineThe advent of CBCT and CAD/CAM technology has revolutionised the field of newlineprosthodontics by providing an accurate and efficient means of fabricating PMMA newlinetemporary fixed prostheses. The use of these tools reduces the time and labour newlinerequired for fabrication, while ensuring precise and accurate restoration of missing newlineteeth. In full mouth rehabilitation cases, temporary fixed prostheses fabricated newlineusing this technology can provide patients with improved function, esthetics, and newlinecomfort, making the treatment process smoother and more efficient. This study newlinedescribes the possibility of implementing CAD/CAM technology to create a newlineprecise construction of fixed tooth supported prostheses, based on cone beam newlinecomputed tomography information stored in the Digital Imaging and newlineCommunications in Medicine (DICOM) format file. newlineAim newlineThe aim of this research article is to compare the clinician and patient reported newlineesthetic outcomes of PMMA crowns fabricated using CBCT and IOS for digital newlinefabrication, in order to provide insights into the most efficient method for newlinefabricating PMMA crowns. newlineMaterials and Methods newlineThe study followed the CONSORT guidelines and was a double-blinded, newlinerandomised, crossover clinical trial. Fifty-six participants aged 18 to 65 years, newlinerequiring full mouth rehabilitation were screened and 12 meeting specific inclusion newlinecriteria were selected using simple random sampling after obtaining written newlineinformed consent. Patients with certain exclusion criteria were excluded from the newlinestudy. Two sets of temporary prostheses, identical except for the data acquisition newlinemethod, were given to each patient for a period of two weeks, one set newlinemanufactured using cone beam computed tomography (group A: CBCT) and the newlineother set obtained using an intraoral scan (group B: IOS). The two-week period newlinewas followed by a washout period of two weeks, during which no dental treatment newlinewas given. The clinical workflow of tooth preparation was conventional, newlinecomprising 5-6 clinical visits. The temporary prosthe