- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02769715
A Study About Patient Satisfaction With Laser-sintered Removable Partial Dentures
Laser-sintered Removable Partial Dentures: a Crossover Pilot Clinical Trial
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Patients seeking Removable partial dentures in the undergraduate clinic at McGill University were asked to participate in the study. Patients were treated by undergraduate students under the supervision of expert prosthodontists. Both the dentists treating the case and the patients were blinded to the type of RPD used. The Principal investigator was responsible for preparing the laboratory prescriptions and sending the final impressions to the dental lab in order to assure blinding of the patient and the treating dentists.
Patients were treated according to standardized clinical procedures. Both dentures were fabricated from one master cast to ensure standardization. The cast was scanned digitally to fabricate the laser-sintered dentures, and then was used to fabricate the cast dentures traditionally using lost-wax casting technique. For each patient, two dentures were fabricated from one final impression; one by casting technique and the other by laser-sintering. Patients were given randomly one denture first and followed-up for 1, 2 and 4 weeks. Then, they were given the second denture and followed-up again. At each follow-up visit, patients filled McGill Denture Satisfaction Instrument. At the end of the study patients were asked which denture they prefer to keep.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
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Quebec
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Montreal, Quebec, Canada, H3A 1G1
- McGill University Faculty of Dentistry
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- partially edentulous
- have adequate space for regularly sized prosthetic teeth and metal frame(s)
- be able to maintain adequate oral hygiene and clean their dentures; do not have major systemic health problems that could interfere with general oral health
- have an adequate understanding of written and spoken English or French
- be capable of giving written informed consent and fill out questionnaires
Exclusion Criteria:
- there is a lack of minimum interocclusal space to accommodate a metal frame and acrylic material
- they have acute or chronic symptoms of parafunctional disorders
- they have inflammatory mucosal conditions such as lichen planus, progressive periodontitis or others
- they have a history of radiation therapy to the orofacial region
- there are health conditions that may jeopardize the treatment, such as alcoholism,
- they are taking any phenytoin (Dilantin), cortisone or insulin
- they have a severe/serious illness that requires frequent hospitalization
- they have impaired cognitive or motor function
- they are unable to return for evaluations/study recalls
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: cast removable partial denture
patients received cast removable partial dentures fabricated using traditional lost-wax casting technique.
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The denture was fabricated traditionally using lost-wax casting technique.
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Experimental: laser-sintered removable partial denture
patients received removable partial dentures fabricated using laser-sintering.
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The master cast was scanned using 3D scanner.
In the digital file, the path of insertion was determined using a special software.
The survey line was drawn and all undesirable undercuts were eliminated.
After that, the entire framework design was built virtually 3 dimensionally using a special software (3Shape Software) according to the specified design in three steps: deciding the contour of the component, building the tissue surface then creating the polished surface.
The file was saved in STL file and was transferred to rapid prototyping machine.
Framework was produced by selective laser sintering technique using the alloy powder (Sintech Metal).
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Mean of patient satisfaction measured by McGill Denture Satisfaction Survey using visual analog scale from 0-100
Time Frame: after 4 weeks
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Mean patient satisfaction in McGill Denture Satisfaction Survey was assessed in regard to 9 aspects of the dentures; general satisfaction, chewing efficiency, chewing ability, easiness to clean, stability, comfort and oral condition.
Mean of patient satisfaction in each of these 9 aspects will be presented for both cast and laser-sintered dentures.
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after 4 weeks
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of participants who choose to keep the laser-sintered removable partial dentures
Time Frame: after 2 months
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Patients will be asked which denture did they prefer to keep after trying both cast and laser-sintered removable partial dentures.
The number of patients who preferred each denture will be presented as well as the number of patients who have no preference.
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after 2 months
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Faleh Tamimi, McGill University Faculty of Dentistry
- Principal Investigator: Rubens Albuquerque, McGill University Faculty of Dentistry
Publications and helpful links
General Publications
- Koutsoukis T, Zinelis S, Eliades G, Al-Wazzan K, Rifaiy MA, Al Jabbari YS. Selective Laser Melting Technique of Co-Cr Dental Alloys: A Review of Structure and Properties and Comparative Analysis with Other Available Techniques. J Prosthodont. 2015 Jun;24(4):303-12. doi: 10.1111/jopr.12268.
- Lima JM, Anami LC, Araujo RM, Pavanelli CA. Removable partial dentures: use of rapid prototyping. J Prosthodont. 2014 Oct;23(7):588-91. doi: 10.1111/jopr.12154. Epub 2014 Apr 18.
- Williams RJ, Bibb R, Eggbeer D, Collis J. Use of CAD/CAM technology to fabricate a removable partial denture framework. J Prosthet Dent. 2006 Aug;96(2):96-9. doi: 10.1016/j.prosdent.2006.05.029.
- Almufleh B, Emami E, Alageel O, de Melo F, Seng F, Caron E, Nader SA, Al-Hashedi A, Albuquerque R, Feine J, Tamimi F. Patient satisfaction with laser-sintered removable partial dentures: A crossover pilot clinical trial. J Prosthet Dent. 2018 Apr;119(4):560-567.e1. doi: 10.1016/j.prosdent.2017.04.021. Epub 2017 Jul 11.
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 12-452 BMD
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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