Evaluation of Three Hard Relining Materials in Complete Dentures
NCT ID: NCT02203279
Last Updated: 2015-09-29
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
36 participants
INTERVENTIONAL
2014-07-31
2015-09-30
Brief Summary
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Materials and Methods: 36 complete edentulous patients who already have maxillary dentures and complaining of instable mandibular dentures will be invited to participate in this study. Mandibular dentures will be relined randomly by one of three relining materials: two chairside relining materials (Tokuyama Rebase II Fast, Tokuyama Dental Co, Japan), and (Flexacryl Hard, Lang Co, USA) and one heat cured acrylic resin (Vertex, Dental technology Co, Holland).
The color stability of relining material, peeling, and the effect on supporting tissue will be assessed by two separate prosthodontists after 3 and 6 months of follow up. In addition, patients will be asked to grade there overall satisfaction on a Visual Analogue Scale (VAS) ranging from 0 to 100.
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Detailed Description
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There are three types of hard relining chair-side materials: Dual-polymerized Visible light-polymerized as Triad DuaLine, Light Liner (Hard), Astron LC (Hard).Visible light-polymerized as Lightdon-U, Triad Hi-Flow Reline Material, Triad VLC Reline Material. Finally, autopolymerized as New Truline, Tokuyama Rebase II (Fast) , GC Reline. Other concerns related to direct reline materials include patient tolerance (taste, temperature, odor), color stability, durability and ease of handling and polishing.
Few studies evaluated the effect of disinfection solutions on relining materials properties as roughness and hardness. In one study, disinfectant solutions caused a decrease in hardness, whereas with roughness, the materials tested showed a statistically significant increase, except for Tokuyama. Depending on the examined relining materials, some materials have increased and the others have decreased surface roughness after immersion in disinfecting solutions or microwave disinfection.
All previous laboratory studies concentrated on the effects of disinfection on relining materials properties as roughness, hardness, color change. However, the clinical studies did not compare chemically cured and heat cured relining materials and their effects on supporting tissue. The aim of this study is to evaluate the clinical performance of two -chemically cured- and heat cured denture relining material after 3 and 6 months of use. In addition, the effect of hard relining materials on supporting tissues, and patients' satisfaction has not been evaluated yet.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
SINGLE
Study Groups
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Rebase II Fast
The direct chair-side relining materiel 'Rebase II Fast' will be used.
Rebase II Fast
It is going to be used a direct relining material
Flexacryl
The direct chair-side relining material Flexacryl will be used
Flexacryl
This is going to be used as a second direct relining material
Vertex
Vertex is a heat-cured resin material which is going to be used for indirect relining
Vertex
This is going to be used as an indirect relining material
Interventions
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Rebase II Fast
It is going to be used a direct relining material
Flexacryl
This is going to be used as a second direct relining material
Vertex
This is going to be used as an indirect relining material
Eligibility Criteria
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Inclusion Criteria
* complete maxillary and lower dentures
* Mandibular dentures with poor retention
Exclusion Criteria
* Partial maxillary edentulous patients
47 Years
78 Years
MALE
No
Sponsors
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Damascus University
OTHER
Responsible Party
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Principal Investigators
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Omar Teriaky, DDS MSc
Role: PRINCIPAL_INVESTIGATOR
PhD student, Department of Removable Prosthodontics, University of Damascus Dental School, Damascus
Muhannad Alssadi, DDS MSc PhD
Role: STUDY_DIRECTOR
Associate Professor, Removable Prosthodontics Department, University of Damascus Dental School, Damascus
Locations
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Department of Removable Prosthodontics, University of Damascus Dental School
Damascus, Rif-dimashq Governorate, Syria
Countries
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References
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Al Rifaiy MQ. Shear bond strength between light polymerized hard reline resin and denture base resin subjected to long term water immersion. Saudi Dent J. 2012 Jan;24(1):23-7. doi: 10.1016/j.sdentj.2011.10.004. Epub 2011 Nov 20.
Arima T, Murata H, Hamada T. Analysis of composition and structure of hard autopolymerizing reline resins. J Oral Rehabil. 1996 May;23(5):346-52. doi: 10.1111/j.1365-2842.1996.tb00863.x.
Pinto Lde R, Acosta EJ, Tavora FF, da Silva PM, Porto VC. Effect of repeated cycles of chemical disinfection on the roughness and hardness of hard reline acrylic resins. Gerodontology. 2010 Jun;27(2):147-53. doi: 10.1111/j.1741-2358.2009.00282.x. Epub 2009 Jun 8.
Haywood J, Basker RM, Watson CJ, Wood DJ. A comparison of three hard chairside denture reline materials. Part I. Clinical evaluation. Eur J Prosthodont Restor Dent. 2003 Dec;11(4):157-63.
Hong G, Murata H, Li Y, Sadamori S, Hamada T. Influence of denture cleansers on the color stability of three types of denture base acrylic resin. J Prosthet Dent. 2009 Mar;101(3):205-13. doi: 10.1016/S0022-3913(09)60032-9.
Machado AL, Breeding LC, Vergani CE, da Cruz Perez LE. Hardness and surface roughness of reline and denture base acrylic resins after repeated disinfection procedures. J Prosthet Dent. 2009 Aug;102(2):115-22. doi: 10.1016/S0022-3913(09)60120-7.
Machado AL, Giampaolo ET, Vergani CE, Souza JF, Jorge JH. Changes in roughness of denture base and reline materials by chemical disinfection or microwave irradiation: surface roughness of denture base and reline materials. J Appl Oral Sci. 2011 Oct;19(5):521-8. doi: 10.1590/s1678-77572011000500015.
Matsumura H, Tanoue N, Kawasaki K, Atsuta M. Clinical evaluation of a chemically cured hard denture relining material. J Oral Rehabil. 2001 Jul;28(7):640-4. doi: 10.1046/j.1365-2842.2001.00701.x.
Murata H, Seo RS, Hamada T, Polyzois GL, Frangou MJ. Dynamic mechanical properties of hard, direct denture reline resins. J Prosthet Dent. 2007 Oct;98(4):319-26. doi: 10.1016/S0022-3913(07)60105-X.
Ogle RE, Sorensen SE, Lewis EA. A new visible light-cured resin system applied to removable prosthodontics. J Prosthet Dent. 1986 Oct;56(4):497-506. doi: 10.1016/0022-3913(86)90397-5.
Wyatt CC, Harrop TJ, MacEntee MI. A comparison of physical characteristics of six hard denture reline materials. J Prosthet Dent. 1986 Mar;55(3):343-6. doi: 10.1016/0022-3913(86)90117-4.
Other Identifiers
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UDDS-RemPro-02-2014
Identifier Type: -
Identifier Source: org_study_id
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