NCT02769715

A Study About Patient Satisfaction With Laser-sintered Removable Partial Dentures

Laser-sintered Removable Partial Dentures: a Crossover Pilot Clinical Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 12 (actual)
• Sponsor: Faleh Tamimi · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

Removable partial dentures (RPDs) are traditionally fabricated by lost-wax casting technique, a time-consuming and very laborious manual technique. Recently, fabricating removable partial dentures using computer designing and laser sintering techniques have been introduced. The purpose of this study was to evaluate the patient satisfaction with new computer-generated removable partial dentures and compare it to the traditional removable partial dentures.

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.

Conditions

• Partially Edentulous Jaws

Interventions

Type	Name	Description
DEVICE	Laser-sintered removable partial denture	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).
OTHER	cast removable partial dentures	The denture was fabricated traditionally using lost-wax casting technique.

Timeline

• Start date: 2014-01-01
• Primary completion: 2015-06-01
• Completion: 2015-11-01
• First posted: 2016-05-12
• Last updated: 2016-05-12

Locations

1 site across 1 country: Canada