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Article
The Effect of Some Remineralization Materials and Resin Infiltration (ICON) on the Depth of White Spot Lesions

Authors: Israa J. Attar اسراء جعفر العطار --- Nidhal H. Ghaib نضال حسين غايب
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2018 Volume: 30 Issue: 2 Pages: 71-75
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: White spot lesions (WSLs) are subsurface enamel demineralization manifested as white opacities which had an esthetic problem. The purpose of this in-vitro study was to evaluate the lesion depth improvement of WSLs following application of fluoride varnish, tooth mousse and resin infiltration (ICON).Materials and methods: Artificial WSLs were created on 120 premolar teeth using demineralization solution with pH (4-4.5). Samples randomly allocated into four groups; fluoride varnish, tooth mousse, ICON and untreated group. Groups were discolored in Cola and orange juice for 24 hours. Teeth were ground sectioned by longitudinal cutting then these sections examined and photographed under stereomicroscope at 12X magnification then analyzed for lesion depth measurements using Image Pro Plus computer software to record the average lesion depth (μm).Results: The mean values of lesion depth for WSLs groups in DDW, Cola and orange juice increased after formation of WSLs then decreased with the fluoride varnish, tooth mousse and ICON. There was a statistically significant difference between the WSLs, fluoride and Mousse group in DDW and Cola, while there was no statistically significant effect of ICON on WSL in DDW (p=0.341)and Cola (p=0.210).Conclusions: Formation of WSLs is associated with significant lesion depth changes and the use of fluoride varnish, tooth mousse and ICON could return minerals or resin to subsurface enamel of WSLs and improve lesion depth in different soft drinks


Article
Diagnosis and localization of the maxillary impacted canines by using dental multi-slice computed tomography 3D view and reconstructed panoramic 2D view

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Abstract

Background: Diagnosis and treatment planning can be difficult with conventional radiographic methods as the or-thodontic-surgical management of impacted canines requires accurate diagnosis and precise localization of the impacted canine and the surrounding structures. This study was aimed to localize and evaluate weather there is any differences in the diagnostic information provided by multi-slice computed tomography three dimensional volumet-ric CT images and two dimensional reconstructed panorama images (derived from CT) in subjects with impacted maxillary canines.Materials and Methods: Thirty patients including 24 female and 6 male with mean age of 18 years with suspected unilaterally or bilaterally impacted maxillary canines were evaluated on images taken with Brilliance™ 64, Philips mul-ti-detector computed tomography. The spatial relationships of the impacted maxillary canines relative to the adja-cent structures was evaluated using linear and angular measurements, and the adjacent lateral incisor root resorp-tion was assessed with three dimensional and two dimensional visualization software.Results: The inclination of the impacted maxillary canine measured to the midline and to the occlusal plane did not differ significantly when it was evaluated using the two imaging modalities. However, there were significant differ-ences between the 3D and 2D images with respect to the impacted maxillary canine vertical height, bucco-palatal localization, and in detecting the proximity and root resorption of the adjacent lateral incisors.Conclusion: Dental CT volumetric images provide more reliable and accurate information for diagnosing the maxil-lary impacted canine position, inclination, distance from adjacent structures, and detection of lateral incisors rootre-sorption.


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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