Evaluation of water atomized solid-state laser apparatus as a method for debonding ceramic orthodontic brackets (An In vitro study)
|MUSTANSIRIA DENTAL JOURNAL
|Article 1, Volume 15, Issue 1, December 2018, Pages 69-76
|Dr. Omar Fawzi Abduljabbar Chawshli; ; ;
|Background and objectives: The contemporary demand for esthetic less visible
ceramic bracket is associated with the disadvantage of complicated and difficult
debonding procedure at the end of the treatment. The aim of this study was to
evaluate the water atomized laser system for debonding ceramic brackets.
Method: Eighty maxillary premolars were divided into two main groups. In group-1,
poly crystalline ceramic brackets (Reflections, Ortho technology, USA) were
bonded to buccal enamel surface. In group-2, mono crystalline ceramic brackets
(PURE, Ortho Technology USA). Were bonded to buccal enamel surface. For
all teeth, the same bracket bonding system was used. Following debonding with
both water atomized laser device and manual debonding instrument, teeth and
brackets were examined under 10X magnification for assessment of bracket
failure (fracture) and of residual adhesive on the enamel surface using a
modified adhesive remnant index (ARI). Enamel surfaces were visualized with
trans-illumination prior to bonding and after removal of the residual adhesive, so
the effect of the debonding forces could be determined. The numbers of the
fractured brackets were counted.
Results: Statistical analysis showed a significant difference in the ARI between
debonding with water atomized laser and utility-debonding pliers in such away
more adhesive remnant was revealed on teeth with laser debonding. Also less
enamel damage recorder with laser group debonding compared with
conventional debonding procedure, which was statistically significant,
additionally more bracket fractures encountered with conventional debonding
than debonding with laser apparatus, which was highly significant statistically.
Conclusions: Debonding of ceramic orthodontic brackets could be done with water
atomized laser apparatus with minimal enamel surface cracks and lesser chance
of bracket fractures.
|Key Words; Laser; ceramic brackets; debonding
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