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Heliosit-orthodontic, a visible light cured adhesive, has been compared with Right-on, a chemically activated adhesive, on 122 patients for a mean period of 12 months with a range 3-18 months. The overall bond failure rate was 20 per cent. Heliosit-orthodontic had a 23 per cent failure rate compared with a 16 per cent failure rate for Right-on.(More)
The aim of this investigation was to compare the repeatability of measuring enamel demineralization surrounding an orthodontic bracket using two techniques: computerized image analysis from digitally converted photographic slides and quantitative light-induced fluorescence (QLF). Fifteen human molars were halved and shaped to look like incisors. The teeth(More)
INTRODUCTION Our aim was to determine predictors for the presence and degree of demineralization during orthodontic treatment. This study was a post-hoc analysis of recruits for a randomized controlled trial. Two hundred thirty patients were included in this study and assessed for demineralization at debond by using quantitative light-induced fluorescence(More)
OBJECTIVES To investigate the validity and reproducibility of a method of morphometric assessment of enamel demineralisation. METHODS An in vitro investigation was carried out on 22 human teeth. One investigator coated the crowns of the teeth with an acid-resistant varnish, leaving a small window on the buccal surface. This was incrementally occluded by(More)
This is Part 2 of an in vitro study investigating two techniques for recording and quantifying demineralization surrounding orthodontic brackets. In Part 1 the repeatability of computerized image analysis from digitally converted photographic slides and quantitative light-induced fluorescence (QLF) was explored. In Part 2 of the investigation the validity(More)
The purpose of this study was to compare detection of enamel and dentinal caries by dental students' and faculty members' visual inspection and by quantitative light-induced fluorescence (QLF). The overall aim was to determine whether QLF is an appropriate technique for use in clinical skills laboratories as a teaching aid for dental undergraduates to(More)
Determination of glycosaminoglycans (GAGs) in peri-implant sulcus fluid (PISF) may monitor tissue changes around implants. This study investigated osseointegrated IMZ titanium implants at five stages from initial exposure to occlusal loading from prostheses. Two peri-implant sulcus fluid glycosaminoglycans (PISF GAGs), hyaluronic acid (HA) and chondroitin-4(More)
The purpose of this study was to determine whether quantitative light-induced fluorescence (QLF) could detect very early demineralization and remineralization longitudinally adjacent to orthodontic components in an in vitro model. Extracted human premolars (n = 13) were sectioned sagittally to produce two equal halves and an orthodontic cleat was bonded to(More)
In this study, gingival crevicular fluid (GCF) was collected from around a canine tooth, in children, before and during orthodontic tooth movement. The aim was to identify and quantify the glycosaminoglycan (GAG) components of GCF and relate them to tooth movement, gingival inflammation, plaque accumulation, pocket probing depth and GCF volume recorded at(More)
Gingival crevicular fluid (GCF) was collected from around canine teeth before orthodontic treatment, during retraction, and in retention. The aim was to investigate the changes in the flow of GCF and its glycosaminoglycan (GAG) components at these three stages of orthodontic treatment, and relate them to tooth movement, gingival inflammation, and other(More)