Thirty maxillary premolars were randomly assigned to one of two groups.
Ceramic brackets debonding.
This study was conducted to compare the shear bond strengths patterns of bond failure and enamel surfaces after debonding two ceramic brackets clearvu and radiance plus and one standard metal bracket mini uni twin.
The instrument s jaws and wedge are specially calibrated to the profile and base of the damon clear bracket resulting in a fast comfortable debonding experience for patients.
Consequently the early ceramic brackets used a silane coupler required to act as a chemical mediator between the ceramic bracket base and the diacrylic or acrylic adhesive resin 4 6 12 13 chemical retention results in an extremely strong bond that may cause the enamel adhesive interface to be stressed during debonding 6 7 today there are.
A remaining part of the ceramic bracket on enamel can be shaped in a way that it cannot be removed with pliers and.
You can expect your debond appointment to last about an hour.
The mean shear bond strength of ceramic brackets is significantly greater than for metal.
Pliers will be used to remove the brackets and wires and your teeth will polished to remove any of the glue that is left on your teeth.
The archwire is left in place and each bracket is removed with a pin and ligature cutter or a pincer type bond removal plier.
No flash removal using a burr or scaler is required.
Ceramic brackets are an esthetic alternative to metal brackets.
Removal of ceramic brackets with the introduction of ceramic brackets a new concern over enamel fracture and loss from debonding has arisen.
In group 1 clarity collapsible ceramic brackets 3m unitek monrovia calif were debonded.
A demonstration of how to debond 3m clarity advanced ceramic brackets off the archwire.
To test the null hypothesis that no difference in bracket failure characteristics is noted when use of a new ceramic bracket debonding instrument is compared with the use of conventional pliers.
An additional risk for enamel damage is caused by the low fracture toughness of the ceramic brackets especially the monocrystalline brackets which may lead to break ups of the bracket itself during debonding 17 27 32.
Debonding ceramic brackets that use a mechanical interlock does not appear to offer any new difficulties.
What can i expect.
The principle of applying a slow peeling force at the bracket base still applies.
Debonding on the archwire the instrument seats at the center of each bracket half and over the archwire for a predictable debond.
To debond position the instrument over the bracket firmly squeeze the bracket mesial distal to utilize.
Ceramic brackets on the archwire.
