Clinical Investigation of Mandibular Implant Overdenture
The purpose of this study is to compare the effectiveness of three variable dental implant attachment methodologies in conjunction with lower dental-implant retained/supported complete overdenture treatment. These three methods are all presently used by dental practitioners, but vary significantly in terms of added treatment cost and complexity. The study tests the hypothesis that the least complex and costly method provides an equivalent treatment outcome to other more complex and costly methods.
|Study Design:||Allocation: Randomized
Endpoint Classification: Bio-equivalence Study
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Clinical Investigation of Mandibular Implant Overdenture|
- Comparison of implant overdenture clinical modalities using clinical measures to compare treatment outcomes [ Time Frame: 6 month and 12 month ] [ Designated as safety issue: No ]
|Study Start Date:||November 1998|
|Study Completion Date:||January 2007|
|Primary Completion Date:||January 2007 (Final data collection date for primary outcome measure)|
Active Comparator: treatment modalities changed for comparison
All subjects experienced all treatment modalities being studied.
Procedure: Implant Overdenture Treatment
All overdenture treatment modalities were provided to each subject using a crossover design.
This project utilizes 30 subjects in a prospective, randomly assigned clinical study that uses a four-period, six sequence, three treatment crossover design to test the hypothesis that defined outcomes of variable implant overdenture treatments are equivalent. The project tests three overdenture treatment modalities, (1) four-implant, bar/clip-attached treatment, (2) two-implant, bar/clip-attached treatment, and (3) two-implant independently attached (O-ring) treatment. Each subject has four dental implants placed into the anterior mandible and new dentures are fabricated. After successful implant integration, subjects are randomly assigned to one of six sequences of treatment. Each treatment is followed for data collection for at least twelve months before the mandibular denture is modified to incorporate the next treatment in the sequence. Equivalence is measured in terms of prosthesis retention, stability, supporting and peri-implant tissue response, patient satisfaction/preference and treatment complications/failures.
Information from this study will assist dental practitioners during treatment planning in selecting appropriate and cost effective treatment choices. There is an inverse relationship between edentulism in the U.S. population and socioeconomic status. If less costly and simplified treatment methods are shown to provide an equivalent treatment outcome to more costly/complex methods, these simplified treatments can be used to treat a larger percentage of the edentulous population.
|United States, Virginia|
|Virginia Commonwealth University|
|Richmond,, Virginia, United States, 23298|
|Principal Investigator:||David R Burns||Virginia Commonwealth University|