View clinical trials related to Tooth Discoloration.
Filter by:Dentists have recently preferred to use composite materials and restorative techniques that allow the use of simplified clinical protocols in order to reduce the time the patient spends in the dentist's chair and minimize technical sensitivity. Color selection in the clinic is a very sensitive process and is affected by environmental factors and operator-related variables. This has led to the development of single-color universal composite resins that aim to facilitate color selection. These materials have a universal opacity and several Vita shades and are recommended by manufacturers to be used in a single color layer that can match different tooth colors. In recent years, monochromatic universal composites have been developed that are supposed to be compatible with all Vita Classic Scale shades from A1 to D4. Manufacturers report that single-color universal composites can be applied to teeth of all colors without using the layering technique using different color composites. Therefore, the aim of this study is to compare the clinical performance of 2 different single-color universal composite resin materials (OMNICHROMA and Zenchroma) in the restoration of non-carious cervical lesions with the control group (Filtek Z250, 3M), which is a multi-color composite resin material, using modified US Public Health Service (USPHS) and World Dental Federation (FDI) criteria.
The aim of the present project is to clinically evaluate the bleaching effectiveness, tooth sensitivity, gingival irritation and patient´s satisfaction during a at-home bleaching with 10% carbamide peroxide using a conventional bleaching tray or a clear aligner.
Aim of the Study: This study will compare between injectable flowable composite (Beautifil flow plus x) and high viscosity glass ionomer (Equia Fil) by ART caries preventive protocol in high caries risk patients receiving chemotherapy and/or radiotherapy
Dental staining may interfere with compliance with chlorhexidine mouth rinse use Thus, developing strategies to control tooth staining associated with chlorhexidine use may be relevant for improving compliance. Thus, a new anti-staining toothpaste formulation (Dentaid, Barcelona, Spain) has been recently developed, aiming to interfere with the development of extrinsic staining associated with chlorhexidine use (preventive action), but also with the capacity of removing staining already formed. For that, the proposed formulation includes hexametaphosphate, tripolyphosphate and polyvinylpyrrolidone (PVP), within its ingredients. Thus, it may be relevant to test the efficacy of this new anti-staining toothpaste formulation in two consecutive randomized clinical trials (RCTs). Objectives The primary objective of these RCTs will be to evaluate the capacity of preventing tooth staining, associated with the use of a chlorhexidine mouth rinse, adjunctive to subgingival instrumentation (step 2 of periodontal therapy) (RCT #1). As secondary objective, the capacity of eliminating or reducing tooth staining already present will be assessed (RCT #2).
The objective of the present study was to compare the effects of reduction of extrinsic stains between a commercially available Oclean electric toothbrush and Oral B manual toothbrush.
The aim of the present study is to evaluate the clinical outcomes (marginal discoloration, marginal adaptation, gingival health, debonding and patient satisfaction) of translucent zirconia crowns bonded by TheraCem (MDP, calcium and fluoride releasing) self-adhesive resin cement compared to multilink self-adhesive resin cement.
Visual shade matching is the most common method, in which a color standard from a commercially available dental shade guide is compared to and matched with the target tooth. However, several factors can contribute to perception errors including: different lighting variables, multiple shade systems available in the market with lack of standardization in color systems and corresponding porcelain systems, individual human variables in color perception and lack of understanding of color science. Therefore, in order to eliminate the uncontrolled variables during the color matching process, instrumental methods have been developed. Spectrophotometric measurement methods employing computer calculations, based on color science and theories, allow quantitative evaluation which is objective and appears to be more accurate. However, extremely high costs, relatively low performance with respect to agreements of the computer-aided devices, and edge loss error make it less acceptable. One of the most powerful tools in communicating with both patients and dental ceramists is digital photography. Hence, this study is designed to explore the possibilities of a novel approach to shade management (eLABor_aid) utilizing a photocolorimetric (PCM) method and subsequent shade formulation without the use of stock shade guides in comparison to well-known visual and instrumental methods. The aim of the study is to evaluate the accuracy of digital photography combined with shade analyzing software (eLAB) in optimizing shade matching when compared to conventional and instrumental methods of shade selection. A Null Hypothesis is suggested where no significant difference regarding shade selection between eLAB protocol, conventional and instrumental methods will be found.
The aim of this study will be to evaluate if subjects submitted to a white diet counseling during home dental bleaching will present better results than subjects that maintained their usual diets. Forty patients will be divided into two groups and randomly allocated to each group: usual diet (control) or white diet, avoiding dye-containing food and beverages. patients will be assessed through a food frequency questionnaire and color measurement using a spectrophotometer at baseline and six months after bleaching.
The specific objective of this study is: - Evaluate and quantify colorimetric changes in young permanent anterior teeth; - Compare the efficiency and efficacy of three gels used for self-administered home whitening and an over the counter whitening strip; - Analyze the increase in dental sensitivity in adolescent patients submitted to home whitening with 6% and 7.5% hydrogen peroxide with and without the addition of calcium (whitening strips); - Assess sensitivity, comfort and acceptance of whitening strips by patients; - Assess patient satisfaction with the method and material used for home whitening.