Clinical Trial Details
— Status: Active, not recruiting
Administrative data
| NCT number |
NCT04378140 |
| Other study ID # |
1164902 |
| Secondary ID |
|
| Status |
Active, not recruiting |
| Phase |
|
| First received |
|
| Last updated |
|
| Start date |
May 5, 2017 |
| Est. completion date |
December 20, 2030 |
Study information
| Verified date |
April 2024 |
| Source |
Roseman University of Health Sciences |
| Contact |
n/a |
| Is FDA regulated |
No |
| Health authority |
|
| Study type |
Observational
|
Clinical Trial Summary
This study is a clinical trial to determine the retention and durability of the anterior
zirconia wing bridge. The type of zirconia-wing bridge the investigators are researching in
this study has two wings which generally have three countersunk holes (meaning that the
circumference of the outer portion of the hole is larger than the inner part of the hole).
Composite resin (dental filling material) is placed in the holes as well as under and around
the wings.
Twelve patients will have bridges placed and be evaluated every 6 months (ideally) to
determine if the bridge is staying in place (retention) and if it is resistant to fracture
(durability).
Description:
For patients missing an anterior tooth, the treatment options available include a dental
implant, a removable partial denture, or a bridge. Some patients may not desire an implant
due to the surgical nature, the limited bone available or the high cost. Removable partial
dentures are relatively inexpensive but are undesirable for many patients due to the limited
esthetics, trouble speaking and annoyance of an oral prosthesis. Traditional bridges use
adjacent teeth as abutments and replace the missing tooth. However, these require the removal
of 1-2 mm of tooth structure on adjacent teeth provide room for the porcelain of the bridge.
Decades ago, the option for a conservative bridge was primarily found in the Maryland bridge,
which had two metal wings that were cemented or bonded on to two abutments. Though
conservative, the Maryland Bridge did not enjoy a high reputation because of the high rate of
debonding (falling off).
In the last several decades, the use of zirconia as a restorative material in dentistry has
dramatically risen due to its toughness, resemblance in color to natural teeth, and
affordability. Also, composite resin bonding agents (adhesive for dental fillings) have
increased in strength and effectiveness. With these two advancements, the possibility of
overcoming the some of the previous shortcomings with the Maryland Bridge is more of a
reality.
The type of zirconia-wing bridge we are researching in this study has two wings which
generally have three countersunk holes (meaning that the circumference of the outer portion
of the hole is larger than the inner part of the hole). Composite resin (dental filling
material) is placed in the holes as well as under and around the wings.
In summary, the zirconia-wing bridge presents a desirable alternative to traditional options
for missing anterior teeth. With the advancements in resin-bonding and zirconia, this study
seeks to examine how these combined elements can be used in the zirconia-wing bridge to
maximize durability and retention in clinical scenarios.
