The Journal
*Dr. Saurabh Goyal
**Dr. Girish Chaudhary
An In Vivo Evaluation of Bond Failure Rates with
Hydrophilic and Conventional Primer Systems
Objective: Bonding is an important part of fixed orthodontic treatment. Failure of bonding can result
in the prolong treatment time. The study was done to compare the bond failure rates of two different
types of etchants. Material and method: Forty patients were bonded using a contralateral bonding
pattern in all quadrants using two different etchants. Results: Out of twenty eight bond failures, ten
were seen with conventional method and eighteen with transbond. Conclusion: Higher failure rate
was observed with transbond MIP and conventional method is a better option.
Introduction Materials and Methods
Pas moisture contamination is reportedly the
1-3
most common reason for bond failure.
Several manufacturers have introduced
hydrophilic systems for bonding to wet enamel
surfaces. Transbond* Moisture Insensitive
Primer (MIP), which contains a hydrophilic
primer solution dissolved in ethanol, is
recommended for use on either dry or wet
etched enamel. This material is chemically
identical to a widely used dentin bonding agent 4
(Single Bond**). Transbond Plus* Self-Etching
Primer (SEP), which is mainly a solution of a
methacrylated phosphoric acid ester, was
developed to combine the etching and priming
stages and eliminate the need for rinsing. This
not only saves time and improves patient
comfort, but also allows better moisture
5
control. The purpose of the present study was
to investigate the in vivo bond failure rates of
brackets bonded with composite resin after the
use of either a conventional etchant method
and Transbond MIP. Forty consecutive patients at the Department of
Orthodontics, at Baba Jaswant Singh dental
college, Ludhiana participated in the study.
Patients were eligible for the study if they:
• Required at least one arch fixed appliance
therapy.
• Had no caries, fillings, or hypoplasia.
• Had no occlusal interferences (to eliminate the
influence of trauma on the bond failure rate).
• Gave their consent to the trial.
Sex, age, and racial differences were ignored.
All teeth, except for the molars, were bonded
directly with metal ROTH 022 slot
brackets***.The primers were allocated by the
split mouth method: The mouth of each patient
was divided into quadrants, and a contralateral
bonding pattern was randomly alternated from
patient to patient to assure an equal distribution
of enamel treatments between the right and left
sides.
In the hydrophilic primer quadrants
(Transbond), the teeth were isolated and dried
with oil-free air.
* Reader, Department of Orthodontics, Baba Jaswant Singh Dental College, Hospital and Research Institute, Chandigarh Road, Ludhiana, Punjab
** Reader, Department of Orthodontics, Baba Jaswant Singh Dental College, Hospital and Research Institute, Chandigarh Road, Ludhiana, Punjab
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Vol. 13 No. 1
Jan-April 2017