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The first step of fixed orthodontic therapy is bonding the brackets to the enamel surface of the teeth by a resin adhesive which should be removed at the completion of treatment while debonding. Commonly, some resin adhesive might remain on the teeth surface after bracket debonding which need to be thoroughly removed in order to prevent the accumulation of plaque and acting as a mechanical irritation to the gingiva that could increase the incidence of periodontal problems [1,2]. Also, discolouration of adhesive due to the poor adhesive removal would become a source of patient dissatisfaction. Since the adhesive used in orthodontics is tooth-coloured, the process of adhesive cleanup could be problematic and timeconsuming [3]. Determining the precise boundaries of adhesive and enamel is difficult which may cause the iatrogenic enamel damage [4]. In routine practice, usually this process is done by visual inspection under unit light and tactile sensation. However, this greatly depend on the experience and skills of the practitioner [5]. Various methods have been introduced in an effort to reduce the operator-sensitivity of the adhesive detection procedure. Applications of ink dye and 0.2 brilliant green solutions are some examples [6]. Rachala MR et al., introduced a method of contrasting the residual adhesive with articulating paper [7]. However, they are toxic and not FDA approved and are used only in forensic dental identification [8,9]. Also, using ultraviolet light and quantitative lightinduced fluorescence have been proposed to be useful in detecting the adhesive resin, based on the different fluorescence properties between natural teeth and adhesive resin [10-14] which is not truly practical because the fluorescence emission is better visualised in a dark environment [12]. In addition, most of these techniques require expensive equipment [13,14]. Because of these limitations developing a simple practical method using FDA approved agents which could disclose the composite is extremely in demand. Abdallah MN et al., reported that the solution of turmeric in combination with methylene blue could efficiently stain the composite [6]. The aim of this study was to provide a media for staining protocol of Abdallah MN et al., in order to make it more applicable in clinical situations. Persica solution and GC-MI Plus paste were chosen to be used as the media for turmeric. Persica is a FDA approved herbal mouthwash, commonly prescribed for fixed orthodontic patients [15]. GC-MI Plus paste is a tooth paste containing 900 ppm fluoride which is also extremely recommended for patients during or immediately after orthodontic treatment [16]. Although the active substance for dying the composite (turmeric), was similar in both study groups, using a vehicle to simplify applying turmeric was assumed to have possible effects on colouring properties of turmeric. Therefore, this study compared the staining effects of turmeric-persica solution and turmeric-GC-MI Plus paste.

Staining Ability of Turmeric-Persica Solution and Turmeric-GC-MI Plus Paste on Remnant Adhesive Resin after Bracket Debonding