Preliminary Registration Detail

Research Registry No : PLRID-00973_V2
 
Postgraduate Research : local
 
Name of University : University Of Dental Medicine, Mandalay
 
Degree : M.D.Sc.
 
University Departmental Research : Yes
 
Name of University : University of Dental Medicine, Mandalay
 
Department : Department of Prosthodontics
 
Registration Date : 2020-11-25
 
Principle Investigator : Phyu Lwin Htun
 
Co-Investigators : Phyu Phyu Kyaw
 
Title of Research : Effectiveness of metal inserted removable partial dentures fabricated by two different denture base materials
 
Field of Research : Dentistry
 
Preliminary Research Design : Experimental Study
 
Preliminary Research Type : Applied
 
Preliminary Justification : Recently, the use of non-metal clasp dentures (NMCDs) made from thermoplastic resins has been raised for patients who do not prefer conventional RPDs with metal clasps for aesthetic reasons. But NMCDs without metal components could cause denture sinking, flexing, tissue displacement and resorption of the residual ridge under the denture base if it is used as long term definitive prosthesis. The application of metal rests in the non-metal clasp denture is supposed to reduce these undesirable affects without compromising aesthetics. Despite previous studies have proved metal inserted conventional acrylic dentures prevent denture sinking and tissue displacement under denture, only a laboratory study on simulated model has performed for metal inserted NMCDs. For above reasons, metal inserted thermoplastic PMMA dentures should be tested for patients who required at least one clasp at the visible area of the face like anterior or premolar tooth using metal inserted conventional PMMA dentures as control. Then, patients satisfaction, masticatory performance, tissue displacement by the dentures and plaque coverage area on the abutment teeth should be assessed and compared between conventional PMMA dentures with metal occlusal rests and clasps and thermoplastic PMMA dentures with metal occlusal rests and aesthetic clasps at the visible area of the dentation .
 
Preliminary Aim : To study the effectiveness of metal inserted removable partial dentures fabricated by thermoplastic PMMA and conventional PMMA denture base materials
 
Preliminary Objectives : 1. To assess the patient satisfaction with metal inserted thermoplastic and conventional PMMA dentures by using Patient Evaluation Questionnaire (PEQ) 2. To assess the masticatory performance of metal inserted thermoplastic and conventional PMMA dentures by using color- changeable chewing gum and a color scale 3. To assess tissue displacement of metal inserted thermoplastic and conventional PMMA dentures by using pressure indicating paste (PIP) 4. To assess plaque scores of abutment teeth for metal inserted thermoplastic and conventional PMMA dentures by Quigely and Hein index5. To compare the patient satisfaction, masticatory performance, tissue displacement and plaque scores between metal inserted thermoplastic and conventional PMMA dentures  
 
Preliminary Sample Size : 14
 
Preliminary Study Duration : One year (September, 2019 to August, 2020)
 
Preliminary Study Area : Department of Prosthodontics, University of Dental Medicine, Mandalay
 
Preliminary Study Method : Mandibular partially edentulous patients (Kennedy class III) who are attending to the Department of Prosthodontics, University of Dental Medicine Mandalay during the first seven months of study period will be selected according to inclusion criteria.
 
Preliminary Research Outcome : Metal inserted thermoplastic PMMA dentures have better patient satisfaction than metal inserted conventional PMMA dentures
 
Preliminary Research Finding : on going research
 
Preliminary Progress Report : on going research
 
Study Starting Date : 2019-09-09
IRB/PRC/ERC Approval Date : 2019-09-05
 
Placement of IRB/PRC/ERC : University of Dental Medicine, Mandalay
 
IRB/PRC/ERC Approval Letter/Document : 25112020031945PhyuLwinTun.pdf
 
Pre-existing Registration ID : -
 
Pre-existing Name of Organization : -
 
Pre-existing Name of Organization Website : -