Vidor MM, Felix RP, Marchioro EM, Hahn L. Enamel surface evaluation after bracket debonding and different resin removal methods.
Dental Press J Orthod 2016;
20:61-7. [PMID:
25992989 PMCID:
PMC4445227 DOI:
10.1590/2176-9451.20.2.061-067.oar]
[Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 09/26/2014] [Indexed: 12/05/2022] Open
Abstract
OBJECTIVE:
To assess enamel surface under scanning electron microscopy (SEM) after resin
removal and enamel polishing procedures following brackets debonding, as well as
compare the time required for these procedures.
METHODS:
A total of 180 deciduous bovine incisors were used. The enamel surface of each
tooth was prepared and brackets were bonded with light cured Transbond XT
composite resin. Brackets were removed in a testing machine. The samples were
randomized and equally distributed into nine groups according to the resin removal
and polishing technique: Group 1, 30-blade tungsten carbide bur in high speed;
Group 2, 30-blade tungsten carbide bur in high speed followed by a sequence of 4
Sof-lex polishing discs (3M); Group 3, 30-blade tungsten carbide bur in high speed
followed by Enhance tips (Dentsply). All groups were subdivided into (a)
unpolished; (b) polished with aluminum oxide paste; and (c) polished with water
slurry of fine pumice. Subsequently, the enamel surface was assessed and
statistical analysis was carried out.
RESULTS:
There were statistically significant differences in enamel roughness and removal
time among all groups. Groups 3a, 3b and 3c appeared to be the most efficient
methods of removing resin with low damages to enamel. Groups 2a, 2b and 2c were
the most time consuming procedures, and Group 2a caused more damages to enamel.
CONCLUSION:
The suggested protocol for resin removal is the 30-blade tungsten carbide bur in
high speed followed by Enhance tips and polishing with aluminum oxide paste. This
procedure seems to produce less damages and is less time consuming.
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