Original article
A clinical study of amount of adhesive remaining on enamel after debonding, comparing etch times of 15 and 60 seconds

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Abstract

This study is a follow-up of a previously reported trial that examined bond failures with either a 15- or 60-second enamel etch time.13 For the current study the same subjects were followed through to debonding at the end of active treatment. Two different methods of bond removal were used and an assessment of the amount of adhesive remaining was made by means of an Adhesive Remnant Index (ARI). ARI was not affected by etch time, age, sex, quadrant, or length of time on test; however, there was a statistically significant association with the position of the tooth in the arch, bracket type, debonding method, and operator. There would appear to be no clinical disadvantage with an enamel etch time of 15 seconds.

Cited by (26)

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    2008, American Journal of Orthodontics and Dentofacial Orthopedics
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    Enamel damage caused during the removal of ceramic brackets has been the subject of concern to many researchers and has prompted a number of studies. Some of these evaluated bonding factors, such as the etching time on the enamel surface and the type of adhesive used.2,4,7,13-19 Others assessed the different types of bracket base retentions.2,4,7,8,16,17,20-28

  • Effects of etchants and primers on shear bond strength of a self-ligating esthetic orthodontic bracket

    2007, American Journal of Orthodontics and Dentofacial Orthopedics
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    The specimens were mounted in a shear testing jig attached to a universal testing machine (model 4204; Instron, Canton, Mass), which was used to measure debonding force in pull mode. Adhesive left on the tooth was characterized under a light microscope according to the adhesive remnant index (ARI).12 Samples were scored based on the following criteria: 3, all adhesive remained on the tooth; 2, more than half of the adhesive remained on the tooth; 1, less than half of the adhesive remained on the tooth; 0, no adhesive remained on the tooth (adhesive failure).

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Formerly Senior House Officer/Registrar, now in orthodontic practice.

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Formerly Senior House Officer/Registrar, now Senior Registrar, Glasgow Dental Hospital.

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Senior Lecturer, Department of Child Dental Health, University of Wales College of Medicine.

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Lecturer, Department of Medical Computing and Statistics, University of Wales College of Medicine.

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