Comparison between digital superimposition and microcomputed tomography methods of fit assessment of removable partial denture frameworks.
The fit of removable partial denture frameworks should be assessed to optimize clinical adaptation. Potential discrepancies between framework and supporting structures are typically precisely measured with negative subtracts and high-resolution equipment. The growth of computer-aided engineering tec...
| Publicado en: | Journal of Prosthetic Dentistry Vol. 131; no. 3; pp. 479 - 487 |
|---|---|
| Autores principales: | , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Elsevier B.V.
Mar2024
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=175696419&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 175696419 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00223913 1ZB jtl: Journal of Prosthetic Dentistry issn: 00223913 maglogo: N pubinfo: dt: Mar2024 vid: 131 iid: 3 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 175696419 175696419 175696419 10.1016/j.prosdent.2023.02.002 175696419 ppf: 479 ppct: 8 formats: tig: atl: Comparison between digital superimposition and microcomputed tomography methods of fit assessment of removable partial denture frameworks. aug: au: Conceição, Pedro Portugal, Jaime Franco, Margarida Alves, Nuno M. Marques, Duarte Neves, Cristina B. affil: Invited Assistant Professor, Department of Dental Biomaterials, Biomedical and Oral Sciences Research Unit (UICOB), Faculdade de Medicina Dentária, Universidade de Lisboa, Lisbon, Portugal sug: subj: Denture, Partial, Removable Tomography, X-Ray Computed Methods Dental Prosthesis, Implant-Supported Human In Vitro Studies Conceptual Framework Silicones Technology Methods Computers and Computerization Chromium Cobalt Dental Care Software Reproducibility of Results Descriptive Statistics Comparative Studies Wilcoxon Rank Sum Test Spearman's Rank Correlation Coefficient ab: The fit of removable partial denture frameworks should be assessed to optimize clinical adaptation. Potential discrepancies between framework and supporting structures are typically precisely measured with negative subtracts and high-resolution equipment. The growth of computer-aided engineering technology allows the development of new methods for the direct evaluation of discrepancies. However, how the methods compare is unclear. The purpose of this in vitro study was to compare 2 digital methods of fit assessment based on direct digital superimposition and microcomputed tomography indirect analysis. Twelve cobalt chromium removable partial denture frameworks were fabricated by conventional lost-wax casting or additive manufacturing techniques. The thickness of the gap between occlusal rests and respective definitive cast rest seats (n=34) was evaluated by using 2 different digital methods. Silicone elastomer impressions of the gaps were obtained, and microcomputed tomography measurements were used as controls for validation purposes. Digitization of the framework, the respective definitive cast, and the combination was followed by digital superimposition and direct measurements with the Geomagic Control X software program. Because normality and homogeneity of variance were not verified (Shapiro-Wilk and Levene tests, P <.05), the data were analyzed with Wilcoxon signed rank and Spearman correlation tests (α=.05). The thicknesses measured by microcomputed tomography (median=242 μm) and digital superimposition (median=236 μm) did not reveal statistically significant differences (P =.180). A positive correlation (ρ=0.612) was detected between the 2 methods of assessing fit. The frameworks presented median gap thicknesses under the limit of clinical acceptability without differences between the proposed methods. The digital superimposition method was determined to be as acceptable as the high-resolution microcomputed tomography method for assessing removable partial denture framework fit. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|