View clinical trials related to Tooth Discoloration.
Filter by:Evaluation the influence of the use of silane coupling agent application as a separate step versus application of silane or acid resistance silane containing adhesives on the clinical performance of repaired posterior resin composite restorations according to Modified United States Public Health Service (USPHS) criteria over one year.
Enamel abrasion and stain removal efficacy of two whitening toothpastes
Aim of this study will be conducted to compare the shade matching and clinical performance of shade blocker versus chameleon effect of two single-shade of universal resin composite in class IV restorations over 1 year evaluation period
Although black staining is considered a drawback that is clinically observed following SDF application and is the main primary barrier for its use clinically . Child's behaviour and cooperation cannot be controlled at a young age or in special health care needs cases. Therefore, the best treatment modality will always be a simple, fast and painless procedure and SDF is the best solution for those cases. Discolouration caused researchers to search for a solution that will reduce or prevent discolouration using KI and GSH. A systematic review was conducted in-vitro, and it showed the use of SDF with KI had reduced stains markedly, potential advantages of minimal staining might be advantageous, along a short period. However, studies with long-term follow-up would be required to provide evidence-based guidelines for using SDF and KI formulations in routine clinical practice
The present study is aimed to evaluation of shade for clinical color change of discolored teeth treated by bleaching vs laminate veneers.
Black stains (BS) are type of extrinsic discoloration of the tooth. It's characterized as dark lines or an incomplete coalescence of dark dots found mostly on cervical third of the crown. Most studies worldwide found that children with the black stained teeth have low caries prevalence. A study on Brazilian population also suggested that black stains might be protective factor against development of dental caries. A study reported that chromogenic bacteria were proposed as etiological factor in production of black stains.The most common microbiological composition of BS was found to be Actinomycetes. Dental examination and saliva samples collection will be done for black stained teeth children of outpatient clinic of Pediatric Dentistry and Dental Public Health Department, Faculty of Dentistry, Cairo University. This research adopts null hypothesis; it assumes that there is no effect on dental caries experience in children with black stained teeth.
Patient with discolored anterior teeth and need conservative restoration treated with all ceramic esthetic laminate veneers. The Patient will be satisfied with restoration mimic the surrounding natural teeth, but conventional preparation shows approximately 60% of veneer failure in form of color change and nearly 67% Fractures of laminate veneers so the modified gull wing preparation is a significant factor affecting the final esthetic especially in discolored teeth and improve fracture resistance of the restoration.
When restoring teeth with IPS Empress laminate veneers, fracture of restorations may occur. So, material with higher mechanical properties is required. Celtra Duo is a new material with glass ceramics infiltrated by 10% zirconia particles which increase the fracture resistance of the material.
The most frequent reason for failure of laminate veneers made of glass ceramics (feldspathic, leucite based and lithium silicate based ceramics) was fracture of the ceramic, Therefore, ceramic materials that have higher fracture resistance, especially for patients suffering from abnormal occlusion, are needed.
Restoration of anterior teeth using conservative approach allows clinicians to provide porcelain laminate veneers with excellent esthetics without extensive tooth structure removal. laminate veneers need the use of etch-able ceramics like glass ceramics (E.max) and hybrid ceramics (Lava Ultimate). The aim of this study is to compare both e.max and lava ultimate veneers clinically.