Evaluation of marginal and internal fit of acrylic bridges using optical coherence tomography.
Summary: Background: The potential of non‐invasive optical coherence tomography (OCT) as a tool for assessment of fit of indirect reconstructions is not fully explored. Objectives: The objectives were to investigate the feasibility and validity of OCT, and to measure the internal and marginal fit of...
| Publicado en: | Journal of Oral Rehabilitation Vol. 46; no. 3; pp. 274 - 282 |
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| Autores principales: | , , , |
| Formato: | diagnostic images equations & formulas pictorial research tables/charts Journal Article |
| Publicado: |
Wiley-Blackwell
Mar2019
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| 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=134737221&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 134737221 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 0305182X ERZ jtl: Journal of Oral Rehabilitation issn: 0305182X maglogo: Y pubinfo: dt: Mar2019 vid: 46 iid: 3 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 134737221 134737221 134737221 10.1111/joor.12746 134737221 ppf: 274 ppct: 8 formats: tig: atl: Evaluation of marginal and internal fit of acrylic bridges using optical coherence tomography. aug: au: Al‐Imam, Hiba Michou, Stavroula Benetti, Ana R. Gotfredsen, Klaus affil: Department of Odontology, Section of Oral Rehabilitation, Faculty of Health and Medical Sciences, University of Medical Sciences, University of Copenhagen, Copenhagen Denmark sug: subj: Tomography, Optical Coherence Denture, Partial, Fixed Acrylic Resins Therapeutic Use Prosthetic Fitting Human Validity Dental Cements Dental Abutments Software Descriptive Statistics T-Tests Correlation Coefficient ab: Summary: Background: The potential of non‐invasive optical coherence tomography (OCT) as a tool for assessment of fit of indirect reconstructions is not fully explored. Objectives: The objectives were to investigate the feasibility and validity of OCT, and to measure the internal and marginal fit of acrylic bridges fabricated using direct and indirect digitalisation. Methods: The accuracy of the employed swept source OCT (wavelength: 1310 nm) was assessed by comparing with an object with known dimensions. Validity was assessed by measuring an OCT measurements on replica, mimicking the cement film thickness, with stereomicroscopic measurements. The reconstructions were placed on the abutments without cementation. The internal and marginal fit of acrylic bridges from direct and indirect digitalisation techniques were then assessed by obtaining 5 OCT B‐scans per abutment tooth at pre‐defined positions located 250 μm apart. The marginal and internal cement gaps were measured using image‐processing software (ImageJ). Mean and standard deviation were calculated for both groups and t test assuming unequal variances was carried out. The level of significance was defined at 0.05. Results: A strong linear correlation (r = 0.865) between OCT and stereomicroscopy was found. T test showed significantly (P < 0.01) better internal fit of bridges made from indirect digitalisation, but no difference in marginal fit. Conclusion: OCT is a feasible and valid tool for investigating internal and marginal fit of acrylic dental reconstructions. Better internal fit was observed in bridges fabricated using the direct digitalisation technique. No difference in marginal fit was found between the two fabrication methods. pubtype: Academic Journal doctype: diagnostic images equations & formulas pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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