View clinical trials related to Tooth Discoloration.
Filter by:Aim of the study was to evaluate the color stability of lithium disilicate ceramic veneers and zirconia reinforced lithium silicate ceramic veneers by using two different types of resin cements including light cured and dual cured cements.
The objective of this clinical research study is to evaluate the stain removal efficacy of a toothpaste containing stannous fluoride as compared to negative control toothpaste in adults.
The aim of this study is to compare the clinical performance of composite veneers performed in two different ways, indirect and direct methods over a period of 6-year. 30 volunteer patients without systemic diseases and who applied to Ege University School of Dentistry for the esthetic restoration of their anterior diastema (gap) were selected according to inclusion and exclusion criteria. The closure of 102 diastema was randomly performed with prefabricated composite resin veneers (n=15; indirect method- Componeer, Coltène, Altstätten, Switzerland) or direct composite resin veneers (n=15; direct method- Essentia, GC, Japan). These restorations were clinically evaluated at baseline, 1-2-6-year by two experienced and blind examiners according to modified Ryge criteria (USPHS criteria). Color match, marginal discoloration, anatomic form, marginal adaptation, secondary caries, surface roughness, retention, and polishing retention were evaluated for that purpose. Statistical analysis was performed with McNemar and Chi-square tests (p<0.05).
The aim of this study was to evaluate the clinical performances of Edelweiss prefabricated veneers and direct resin composite restorations (Ceram-X Duo SphereTec) performed with U- veneer transparent templates used for anterior diastema closure and tooth reshaping over 3-year. The patient group consisted of individuals who applied for aesthetic complaints on their anterior teeth. 21 volunteer individuals without systemic disease were included in the study. Patients were randomly selected for each group. In Group 1; 38 teeth (10 patients) were restored with Edelweiss prefabricated veneers (Edelweiss Dentistry) in combination with Edelweiss nanohybrid resin composite (Edelweiss Dentistry) and Prime&Bond Universal (Dentsply Sirona) adhesive system. In Group 2; 36 teeth (11 patients) were restored with Ceram-X Duo SphereTec (Dentsply Sirona) resin composite in combination with U- veneer (Ultradent) transparent templates and Prime&Bond Universal adhesive systems. Properties of the restorations were evaluated at baseline, 6, 12, 24, and 36 months using Modified Ryge Criteria (USPHS Criteria). Data were evaluated using Chi-Square and Fisher's Exact tests (p=0.05).
This randomized controlled trial is to clinically assess and compare impression quality of polyvinylsiloxane impression material using one step (experimental) and two step (control) impression techniques and its effect on marginal fit of prosthesis and proximal contact of prosthesis.
This trial evaluated the influence of polishing on enamel color change after in-office bleaching treatment. It also evaluated the influence of polishing on tooth morphology and sensitivity.
The aim of this study is to investigate the stain removal efficacy of 2 experimental anti-dentin hypersensitivity (DH) dentifrices with four and eight weeks twice daily use. A daily use, regular fluoride dentifrice will be included as a reference dentifrice.
The aim of the present study was to investigate the relationship between the presence of black tooth stain (BS) and dental caries incidence, dental plaque scores and to examine the colonization of Streptococcus mutans, Lactobacillus spp., Actinomyces spp. and Capnocytophaga spp. in dental plaque samples with or without BS. The socioeconomic status of the family, the oral hygiene and dietary habits of the children, medical and dental history of the children were also compared between two groups.
The aim of the study is to assess the efficacy of Blanx Black Toothpaste against extrinsic stains of teeth. Patients who sign the informed consent will participate to the study. At the baseline, the collection of Plaque Index, modified Lobene index and Bleeding Index will be performed, giving the instruction for a proper home oral hygiene. Professional supragingival and subgingival dental hygiene with piezoelectric will be performed. Then, patients will be randomly divided into two groups: - Trial Group will use Blanx Black Toothpaste (2 minutes brushing) twice a day for the all the study duration; - Control Group will use Colgate Sensation White Toothpaste (2 minutes brushing) twice a day. Patients will be reevaluated after 10 days, after 1 month and after 3 months, collecting again the indices and improving home oral care.
To clinically compare the effects of LED- or Diode laser-activated bleaching on colour change, tooth-sensitivity, gingival-irritation and temperature variation over 9-months. Thirty-five patients with tooth colour A2 or higher will be included in the study. In a split-mouth design, using a 35% HP bleaching agent (Whiteness HP); one side of each mouth will be randomly activated by a diode laser (Epic X) and the other side by an LED (Radii Plus) light-source. During bleaching, the temperature variations will be recorded using a thermocouple from the buccal surface of canine teeth. Colour change (ΔSGU, ΔE) will be evaluated by subjective (Vita classic/bleached guide) and objective methods (spectrophotometry) before treatment and immediately, 48h, 1 week, 1, 6, 9 months after. Tooth-sensitivity and gingival- irritation will be assessed by visual analogue scale (VAS) and Gingival Index.