View clinical trials related to Leukoplakia.
Filter by:This study is to verify the efficacy of tobacco cessation in patients with oral diseases; periodontitis, dental implant and oral mucosal diseases by a multicenter prospective trial. Tobacco cessation intervention is implemented for 12 weeks. During the tobacco cessation intervention for the subjects, attending doctors implement standard treatments for their oral diseases. Improvement of each disease is evaluated between smoking cessation intervention group and non-cessation intervention group.
This phase IIa trial studies how well metformin hydrochloride works in preventing oral cancer in patients with an oral premalignant lesion (oral leukoplakia or erythroplakia). Oral premalignant lesions look like red or whitish plaques or lesions in the mouth that do not rub off and can be associated with a higher risk of cancer. Metformin hydrochloride may help prevent oral cancer from forming in patients with an oral premalignant lesion.
Recent studies estimated that 15 to 20% of all cancers in humans are associated with viruses. Among oral cancer about 90% are oral squamous cell carcinomas (OSCC). Alcohol and tobacco consumption have been recognized for years as the main risk factors for development of OSCCs. However, 10 to 20% of patients suffering from OSCCs are non-smokers and/ or non-drinkers. Consequently, the hypothesis of another agent responsible has risen. Indeed, several studies have suggested the possibility that a virus could be associated with or be a causal agent of OSCC. The first objective is to detect and characterize the presence of infectious agent (mostly virus) transcripts in pre-malignant or malignant tumours from patients with OSCCs.The secondary objectives are (i) to associate and (ii) if possible define a causality link between these agents and a subset of potentially malignant disorders and/or OSCCs.
Pre-malignant lesions are difficult to treat. Even after surgical removal they tend to re-appear. Often the lesions are to large and are apparent on many sites, therefore surgical removal is not always possible. The photodynamic therapy uses a special substance, which is absorbed in cells, and thereafter activated by a defined light. The aim of this study is to compare the photodynamic therapy in potentially malignant lesions to a placebo. The investigators assume a significant better result in photodynamic therapy then treatment with a placebo.
The goal of this clinical research study is to learn how Actos (pioglitazone) may affect oral premalignant lesions (OPLs) and/or the risk of mouth cancer. The safety of this drug will also be studied.
Evaluate the ability to image oral mucosa in healthy volunteer by nonlinear microscopy
Oral leukoplakia within the mouth is a visible white patch which can develop into cancer if not treated. There is no good treatment for these lesions, apart from surgery which is associated with significant side effects and physical deformation of the treated area. The investigators hypothesized that photodynamic therapy can be used safely and effectively to induce significant regression of oral leukoplakia.
This phase I trial studies the side effects and best dose of photodynamic therapy using aminolevulinic acid in treating patients with oral leukoplakia. Photodynamic therapy uses a drug, such as aminolevulinic acid, that becomes active when it is exposed to a certain kind of light. When the drug is active, abnormal cells are killed. Photodynamic therapy using aminolevulinic acid may be effective against oral leukoplakia.
This clinical trial studies widefield fluorescence and reflectance imaging, fluorescence spectroscopy, and tissue samples in regularly examining (monitoring) participants at risk for developing oral cancer. All tissue and cells are made of tiny particles. Some of these particles give off small amounts of light. This light is called fluorescence. Fluorescent imaging use instruments that shine different wavelengths (colors) of light in the mouth taking fluorescence pictures through a portable head light or by taking fluorescent and reflectance pictures through a dental microscope using a digital camera. Fluorescent spectroscopy uses a small probe placed gently against the lining of the mouth and the tissue is exposed to small amounts of fluorescent light that is then collected with a special camera and a computer to be analyzed. Checking mouth tissue samples under a microscope may also help detect abnormal cells. Diagnostic procedures, such as fluorescence and reflectance imaging, fluorescence spectroscopy imaging, and tissue samples, may help doctors detect pre-cancer or early cancer when it may be easier to treat.
This phase II trial is studying how well rosiglitazone works in preventing oral cancer in patients with oral leukoplakia. Chemoprevention is the use of certain drugs to keep cancer from forming, growing, or coming back. The use of rosiglitazone may keep cancer from forming in patients with oral leukoplakia