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Article
Effect of different staining materials on color stability of sapphire brackets bonded with different types of light cure orthodontic adhesives (An in vitro study)

Authors: Alaa Faleh Albo Hassan الاء فالح البوحسن --- Nidhal H. Ghaib نضال حسين غايب
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2015 Volume: 27 Issue: 2 Pages: 136-141
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: The demand for better esthetic during orthodontic treatment has increased nowadays, so orthodontistsstarting using esthetic arch wires, brackets and ligatures.Tooth colored brackets were introduced in different types ofmaterials. Sapphire ceramic brackets are one type of esthetic brackets and their color stability remains the mainconcern for the clinicians and patients at the same time .The present study design to evaluate the effect of three different staining materials (pepsi, black tea and cigarettesmoke) on the stainability of sapphire ceramic brackets bonded with three types of light cure orthodontic adhesiveswhich include: Resilience, Enlight and Transbond.Materials and Methods: The sample consisted of three hundred sixty sapphire brackets. The brackets were dividedaccording to bonding materials into three groups each group consist of one hundred twenty brackets, then eachsubgroup farther subdivided into four groups according to the material they were immersed (distilled water, blacktea, Pepsi and cigarette smoke) with thirty brackets each, then Each group with ten brackets farther subdividedaccording to time interval of immersion in each media into three groups one day, seven days and fourteen days at37°C in the incubator.A UV-Visible spectrophotometer (Shimadzu, UV -1800) was used to perform a light absorptiontest.Results: ANOVA and LSD post Hoc tests were used to identify the significant effects of the staining materials at asignificance level P ≤ 0.05.It was found that the immersion time gradually influenced the color stability of the adhesivematerials with sapphire brackets with the highest activity observed at fourteen days interval. The brackets bondedwith Resilience light cure adhesive are the most type affected by staining materials, then followed by the bracketsbonded with Transbond and finally the brackets bonded with Enlight light cure adhesive. For the staining materials itwas found that the cigarette smoke is the most powerful staining material, followed by tea and finally pepsi.Conclusions: From the above result we can conclude that the type of adhesive must take in consideration when theesthetic brackets have been used


Article
The Effect of AcceleDent® Device on Both Gingival Health Condition and Levels of Salivary Interleukin-1- βeta and Tumor Necrosis Factors-Alpha in Patients under Fixed Orthodontic Treatment

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Abstract

Background: Traditional orthodontic treatment takes a long time and this may lead to several disadvantages likehigher predisposition to periodontal diseases and dental caries. Recently, many researchers focus on shorterorthodontic treatment time through different methods like the use of: vibration, surgical approach, adjunctivemedicine, laser and others. This study aimed to determine the effect of Acceledent vibration device on the gingivalhealth condition and the changes in levels of salivary IL-1β and TNF- α among patients under fixed orthodonticappliance during orthodontic treatment.Material and Methods: A total of 32 adult patients with an age ranged between 19-23 years were participated in thisstudy. They were divided into two groups: 14 patients under fixed orthodontic appliance with the use of Acceledentvibration device as study group and 18 patients under fixed orthodontic appliance only as control group. All patientswere with Class I and /or Class II malocclusion cases requiring bilateral extraction of their maxillary first premolarteeth, underwent a session of professional oral hygiene and received oral hygiene instructions before and during theperiod of study. The collection of the unstimulated salivary samples from the individuals was performed at differenttimes after placement of the fixed orthodontic appliance; base line (T0), after 1 hour (T1), after one week (T2), aftertwo week (T3). The levels of salivary IL-1β and TNF-α were estimated by using commercially available ELISA kits. Oralcleanliness were determined by using of gingival index (GI) and plaque index (PI).Results: For both study and control groups, results reported that the mean value of salivary IL-1-β (pg/ml) and TNF-α(pg/ml) were highest at T1, followed by T2, then T3 and lowest T0 with highly statistically significant difference(P<0.01).The mean value of both salivary IL-1-β (pg/ml) and TNF-α (pg/ml) among study group were higher thancontrol group at T1, followed by T2, then T3 with statistically significant difference (P<0.05). Among study group only,results of this study recorded a negative direction correlation between both IL-1-β (pg/ml) and TNF-α (pg/ml) andgingivitis at the (T2 and T3) and (T3) with statistically highly significant and significant respectively.Conclusion: The application of Acceledent device play important role in improving the gingival health condition andincreasing the levels of salivary IL-1β and TNF-α secretion among patients under fixed orthodontic appliance incomparison to other under fixed orthodontic appliance

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