Transbond™ Plus Self Etching Primer
Frequently Asked Questions
1. Why is the liquid tinted pale yellow?
Camphorquinone (CPQ) causes the pale yellow tint.
Therefore, after proper activation, the saturated applicator fiber tip will look pale yellow. CPQ is only contained in the outer large blister. If the contents of the first blister do not properly mix with the contents of the middle blister or if the applicator tip is not saturated with the properly mixed liquid, then the applicator tip will look clear.
2. Is this product moisture tolerant?
Yes, it contains a hydrophilic component which tolerates small amounts of moisture.1,3
3. Is pumicing the teeth required before the use of Transbond™ Plus Self Etching Primer?
For maximum bond strength and bond reliability it is important to begin the procedure with a clean tooth surface. The tooth surface must be free of plaque, calculus and salivary pellicle. There are two methods for achieving a clean tooth surface prior to the application of Transbond Plus Self Etching Primer: mechanical, e.g. pumice or prophy paste, and chemical, e.g. phosphoric acid etchant.
4. What are the potential drawbacks of the prophy step?
For patients with poor oral hygiene or gingival hypertrophy an aggressive prophy step can cause damage to the gingival tissue which causes gingival crevicular fluid or blood to flow. This can contaminate the tooth surface and compromise bonding. Phosphoric acid can be used to achieve a clean tooth surface.
5. What do you recommend when using Transbond Plus Self Etching Primer on patients with poor oral hygiene?
As with any orthodontic bonding system it is important that a clean tooth surface is prepared at the time of bonding. You may consider that the patient undergo a thorough prophy cleaning within 10 days prior to the bonding appointment.
At the time of bonding, follow up with a supragingival prophy in the area of the tooth to be bonded. This twostep approach may allow the gingival tissue to heal and minimize the gingival crevicular fluid (GCF) or blood from contaminating the tooth surface during the bonding appointment. GCF contamination may be one of many factors that contribute to bond failure.
6. Can I use a phosphoric acid etch prior to the application of Transbond Plus Self Etching Primer?
Yes. Phosphoric acid can be applied as a means to achieve a clean tooth surface, before the application of Transbond
Plus Self Etching Primer.
7. Why is this technique so different from what has been taught about applying traditional etchants?
This product uses a different chemistry and technology for etching teeth. Traditional etchants are lightly painted on the enamel without rubbing.
Transbond Plus Self Etching Primer must be RUBBED onto the enamel for 3 to 5 seconds in order to continue the etching process. This product will not etch properly if it is applied using the traditional phosphoric acid etchant technique.
8. Why should the material be rubbed on the enamel for 3 to 5 seconds?
RUBBING the material on the enamel delivers unreacted etchant/primer molecules to the enamel surface as they
are depleted. It is very important to not just paint the product on the enamel but RUB it onto the enamel
with light force. This technique actually helps with the etching process.
9. Will rubbing this product for 3 to 5 seconds damage the enamel rods?
No. This product may actually cause less enamel loss compared with traditional etchants.4
10. How can one product work as both etchant and primer?
The chemistry used in this product consists of a bifunctional molecule on a methacrylate base.
When RUBBED onto the enamel, the etchant component will expose the enamel rods while the primer components
simultaneously penetrate into those exposed rods.
4 Hosein, I., Sherriff, M., Ireland, A.J., Enamel loss during bonding, debonding, and cleanup with use of a self-etching primer, AJO/DO, pp. 717-723, December 2004.