Wettability of saliva substitutes on CAD/CAM denture base materials

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dc.contributor.authorMikhail, Paul
dc.contributor.examiningcommitteeFranca, Rodrigo (Restorative Dentistry)
dc.contributor.examiningcommitteeAzpiazu Flores, Francisco (Restorative Dentistry)
dc.contributor.supervisorPesun, Igor
dc.date.accessioned2024-07-11T16:30:19Z
dc.date.available2024-07-11T16:30:19Z
dc.date.issued2024-06-26
dc.date.submitted2024-06-26T21:32:49Zen_US
dc.date.submitted2024-07-03T01:09:25Zen_US
dc.degree.disciplineRestorative Dentistry (Prosthodontics)
dc.degree.levelMaster of Dentistry (M.Dent.)
dc.description.abstractPurpose: To measure and compare contact angle (CA) goniometry of liquids on denture bases manufactured by different methods, and to investigate the impact of physical and chemical topography, as well as various saliva substitutes, on contact angle measurements. Methods: This study was organized into three phases. Phase 1 measured contact angle (CA) of deionized water on two non-polished CAD/CAM denture bases: Mnp (milled; Lucitone 199 disc milled in Dentsply MCX5) and Pnp (printed; Formlabs denture base resin printed in Formlabs 3B). Phase 2 measured CA of deionized water on 5 polished denture bases: C (conventional; Lucitone 199 heat cured), M (milled), P (printed), I (injection molded; Ivocap), and F (flexible; Ultraflex). Phase 3 measured CA of 5 saliva substitutes – Biotene, VEGA, Spry, Moi-Stir, and Dentilube – on the 5 polished denture bases. Ten droplet measurements were obtained for each group, with each droplet analyzed for static CA, advancing contact angle (ACA), receding contact angle (RCA), and contact angle hysteresis (CAH). Statistical analysis was conducted using ANOVA, with a significance level set at 0.05. Results: The Pnp exhibited the highest ACA with statistical significance, while the Pnp, Mnp, and I had the lowest RCA. CAH was demonstrated to have statistically significant differences among the denture bases, with Pnp exhibiting the largest CAH, followed by Mnp, and then the polished denture bases. There were no significant differences in CAH among the polished denture bases. The saliva substitutes exhibited differences in ACA, with Spry and VEGA having the highest ACA, while Biotene had the lowest. Conclusion: The manufacturing methods of denture bases influences the CAH, while the chemical composition of the denture base specimens does not appear to affect CAH. Saliva substitutes do, however, impact CA measurements.
dc.description.noteOctober 2024
dc.identifier.urihttp://hdl.handle.net/1993/38320
dc.language.isoeng
dc.rightsopen accessen_US
dc.subjectwetability
dc.subjectcomplete denture
dc.subjectcomputer aided design
dc.subjectcomputer aided manufacturing
dc.subjectdenture retention
dc.subjectdenture stability
dc.subjectcontact angle
dc.subjectdenture base
dc.subjectartificical saliva
dc.titleWettability of saliva substitutes on CAD/CAM denture base materials
dc.typemaster thesisen_US
local.subject.manitobano
oaire.awardTitleResearch Fellowship grant
project.funder.nameACPEF (American College of Prosthodontics Education Foundation)
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