Survival of Implant-Supported All-Ceramic Prostheses

Status Active, not recruiting

Clinical Trial Summary

The purpose of this research study is to identify reasons that cause an all-ceramic bridge to fracture which include the thickness of the bridge material, the type of bridge material and the bite force of the person. This all-ceramic bridge will be compared to a metal-ceramic bridge. The investigators are conducting this study so we can make bridges which can withstand forces in the mouth which tend to break them. The overall objective of this research is to analyze how properties of ceramic materials and different forces in the mouth interact with each other to affect the longevity of these bridges. These include fracture toughness, elastic modulus of ceramic layers and supporting substrate, core thickness, connector height, wear, loading orientation, and maximum clenching force.

Clinical Trial Description

The long-range goal of the proposed research is to formulate design survival statistics that will aid the dental community in fabricating properly designed prostheses that can predictably survive the oral environment. Patients who qualify for this study will be randomized (as in chanced with the flip of a coin) into two groups. The first group is a metal-ceramic group where patients will receive a bridge with a metal substructure underneath. The second group is an all-ceramic group where patients will receive a bridge which is made of hard ceramic material. All patients will receive two dental implants which will bond to bone for a period of 4-6 months. An impression or mold of the implants will then be made and a bridge will be fabricated based on the randomization of the patient. Patients will be asked to return at 6 months and yearly thereafter up to 5 years. During these recall appointments, photographs will be taken and impressions of the bridge and other teeth will be made. This will allow us to measure the amount of wear happening with the bridge and the other teeth. The investigators can also examine the amount of bone around the implants as well as the integrity of the bridge. ;

Study Design

Related Conditions & MeSH terms

Dental Prosthesis Failure
Disorder of Prostheses and Implants
Partial Edentulism
Prosthesis Failure

Clinical Trial Details

NCT number	NCT01729858
Study type	Observational
Source	University of Florida
Contact
Status	Active, not recruiting
Phase
Start date	December 2008
Completion date	December 2028

View Details

See also
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.