| Bond strength with APF applied after acid etching. | |
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MedLine Citation:
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PMID: 9810046 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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One tenet of successful orthodontic therapy is to complete treatment without decalcification, hypocalcification, or discoloration of the natural dentition. Fluoride application has been shown to reduce demineralization of enamel. The purpose of this study was to see if fluoride could be incorporated into enamel before orthodontic bracketing without adversely affecting bond strength. Forty extract adolescent human premolars were randomly divided into two equal groups with 20 teeth each. Group 1 served as control group, and group 2 (experimental) was immersed in 1.23% acidulated phosphate fluoride for 4 minutes after acid etching. The buccal surfaces of all 40 teeth were then bonded with the same type of metal bracket and debonded with an Instron machine. The debonding interface was observed with scanning electron microscopy (SEM). The mapping was calculated with energy dispersive x-ray spectrometry. The results showed that the bond strength of group 1 was significantly greater than that of group 2. The enamel detachment (enamel fracture) was found in the experimental group only. Although the application of acidulated phosphate fluoride to a tooth can prevent dental decay or decalcification, the bond strength decreases and enamel detachment is found after debonding. The result shows that the application of acidulated phosphate fluoride after acid etching enamel has an adverse effect on orthodontic bond strength of human enamel. |
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Authors:
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C L Meng; C H Li; W N Wang |
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Publication Detail:
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Type: Comparative Study; In Vitro; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics Volume: 114 ISSN: 0889-5406 ISO Abbreviation: Am J Orthod Dentofacial Orthop Publication Date: 1998 Nov |
Date Detail:
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Created Date: 1998-12-23 Completed Date: 1998-12-23 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8610224 Medline TA: Am J Orthod Dentofacial Orthop Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 510-3 Citation Subset: D; IM |
Affiliation:
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National Defense Medical Center, School of Dentistry, Taipei, Taiwan, Republic of China. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acid Etching, Dental
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methods,
statistics & numerical data Acidulated Phosphate Fluoride / administration & dosage* Adolescent Analysis of Variance Bicuspid Child Dental Bonding / methods*, statistics & numerical data Dental Debonding Equipment Failure / statistics & numerical data Fluorides, Topical / administration & dosage* Humans Orthodontic Brackets / statistics & numerical data Random Allocation Tensile Strength |
| Chemical | |
Reg. No./Substance:
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0/Fluorides, Topical; 39456-59-2/Acidulated Phosphate Fluoride |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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