Active clinical trials for "Tooth Discoloration"

The whitening action of an investigative hydrogen peroxide/sodium fluoride containing mouth rinse will be evaluated through stain removal using mean Lobene Stain Index over 14 days compared to a currently marketed hydrogen peroxide containing whitening mouth rinse (Crest® 3D White Multi-Care Whitening Rinse, Glamorous White, Fresh Mint). A currently marketed toothpaste (Colgate® Cavity Protection) will be included as the negative control in order to compare to brushing alone. 225 healthy volunteers will be enrolled in this two week study. Volunteers who qualify to be in this study will have an equal chance of being assigned to one of the three treatment groups. Volunteers will have a total of 5 clinic visits including 1) screening, 2) baseline 3) Day 4 (after 3 days of use), Day 8 (after 7 days of use) and Day 15 (after 14 days of use). Volunteers will maintain a diary at home to record each treatment use. Examinations for oral hard/soft tissue assessment and extrinsic tooth stain after the subject brushes with water and floss will be completed at Baseline and repeated at Clinic Visits 3, 4, and 5, which are on Days 4, 8 and 15 post baseline (i.e., after 3, 7, and 14 days of product use).

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 color change of endodontically treated teeth is a common concern in clinical practice. The objective of this study will be to evaluate, in vivo, the color change (ΔE00) caused by endodontic treatment. A observational retrospective study will be conducted to evaluate the ΔE00 of anterior (incisors and canines) and posterior (premolar) teeth treated at a private clinic, regardless of technique, treatment time and sealer used. In this study the ΔE00 will be evaluated using the measurements obtained in the homologous tooth (without endodontic treatment) versus the measurement obtained from the tooth treated endodontically. The values of ΔE00 obtained for each sealer, cut and time will be analyzed by multifactorial analysis to verify associations of the outcomes with the ΔE00.