HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Mavropoulos, A. Articles by Athanasiou, A. E. Search for Related Content PubMed PubMed Citation Articles by Mavropoulos, A. Articles by Athanasiou, A. E.

In vivo evaluation of two new moisture-resistant orthodontic adhesive systems: a comparative clinical trial

School of Dentistry, Aristotle University of Thessaloniki, Greece

Professor Athanasios E. Athanasiou, Department of Orthodontics, School of Dentistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece. Email: aeathan{at}dent.auth.gr

Objective: To evaluate and compare the clinical performance of two new moisture-resistant orthodontic adhesive systems: a chemically-cured composite resin (Unite, 3M Unitek, Monrovia, California, USA) in conjunction with a special moisture-resistant primer (Transbond MIP, 3M Unitek, Monrovia, California, USA); and a fluoride-releasing light-cured compomer (Assure, Reliance Orthodontic Products, Inc., Itasca, Illinois, USA).

Design: Randomized controlled clinical trial using the ‘split-mouth’ technique.

Setting: Department of Orthodontics, Aristotle University of Thessaloniki.

Subjects (Materials) and Methods: Twenty-five consecutively started patients (13 females and 12 males) requiring fixed appliance orthodontic treatment.

Interventions: Four-hundred-and-thirty-six stainless steel brackets bonded to all teeth except molars using two different moisture-resistant orthodontic adhesive systems.

Main outcome measures: Bond failure rates during a period of 9 months were estimated for each adhesive system and the corresponding bracket survival curves were plotted using the Kaplan– Meier product-limit estimate. Bracket survival distributions with respect to adhesive material, tooth location, patient’s gender and operator, were then compared by means of a log-rank test. Bond failure interface was determined using the Adhesive Remnant Index.

Results: Assure recorded a higher bond failure rate (13.8 per cent) than Unite & MIP (7.3 per cent). The corresponding bracket survival curves were found to be significantly different (P < 0.05). Premolars exhibited higher bond failures than incisors and canines (P < 0.001), while half (49.8 per cent) of the total bond failures occurred during the first 2 months of treatment. The predominant mode of failure was within the bonding material.

Conclusion: The new moisture-resistant adhesive systems under study were found to be clinically efficient, though Assure exhibited a significantly higher bond failure rate than Unite and Transbond MIP. The higher frequency of adhesive failures observed with Assure might indicate a possible weak point at the adhesive-bracket interface.

Key words: Clinical trial, moisture-resistant adhesive, orthodontic bonding.

This article has been cited by other articles:

				S. Elekdag-Turk, D. Isci, T. Turk, and F. Cakmak Six-month bracket failure rate evaluation of a self-etching primer Eur J Orthod, April 1, 2008; 30(2): 211 - 216. [Abstract] [Full Text] [PDF]

				P. Murfitt, A. Quick, M. Swain, and G. Herbison A randomised clinical trial to investigate bond failure rates using a self-etching primer Eur J Orthod, October 1, 2006; 28(5): 444 - 449. [Abstract] [Full Text] [PDF]