leukoplakia,erythroplakia and palatal changes due to reversed smoking(R.S) are considered as precancerous lesions .oral lichen planus has been considered as a precancerous condition.to evaluate  precancerous lesions in factory workers of Kerman city,a cross sectional study was designed in which 1167 workers(1070 men,97 women,mean age=31.8) were participated.dental mirrors,explorers and flas...

Purpose: Qat chewing, smoking, smokeless tobacco (locally known as shammah) and waterpipe smoking (locally known as madaah) are common habits in Yemen. The aim of this study was to investigate the prevalence of oral cancerous and precancerous lesions, and to investigate the prevalence of oral risk habits among Yemeni adults attending outpatient dental clinics, Sana‘a University. Materials and m...

Oral health disparities have exacerbated since the popularity of chewable tobacco among the general population in Pakistan. Karachi South ranks second in the incidence of oral cancer and this frequency is steadily rising. Several molecular studies have shown a link between the use of chewable tobacco products and oral submucosal fibrosis. Oropharyngeal cancer, is being driven by HPV is now well...

Nonmalignant tobacco-associated lesions of the oral cavity were discussed in the first part of this two-part article. Here, we describe malignant lesions associated with tobacco use, basic biopsy principles for such lesions and intervention strategies that dental professionals may use to reduce the chances of their patients developing precancerous lesions or primary malignancies.

The Study was conducted to evaluate the prevalence of Use of tobacco & its associated products & Oral Sub Mucous Fibrosis among teenagers. It was conducted on 750 school going teenagers of Dehradun city. Results of the study showed that 34.1% of the study subjects used tobacco & its associated products & among them 14.2% of Oral Sub Mucous Fibrosis cases were identified. Association between typ...

Nicotine, a tumor promoter in tobacco, can increase Peroxiredoxin (Prx1) and nicotinic acetylcholine receptors (nAChRs) in oral squamous cell carcinoma (OSCC). In the present study, we investigate the effects of nicotine in oral precancerous lesions focusing on apoptosis and nAChR/Prx1 signaling. We detected expression of Prx1, α3nAChR, α7nAChR, phosphorylation of mitogen-activated protein kina...

Background: New tobacco products, such as smokeless tobacco, are becoming more popular every year. In talking with our patients, we determined several reasons for that trend. The sale of these products is prohibited in many countries; hence, people obtain the product illegally. This important, since when stored under inappropriate conditions and temperatures, quality properties change, includin...

Oral cancer is historically linked to well-known behavioural risk factors such as tobacco smoking and alcohol consumption. Other risk factors include age over 40, male sex, several dietary factors, nutritional deficiencies, viruses, sexually transmitted infections, human papillomavirus, chronic irritation, and possibly genetic predisposition. Precancerous lesions in the oral cavity include leuk...

background: the present study was undertaken to estimate and compare the levels of plasma total cholesterol (tc), low density lipoprotein (ldl), high density lipoprotein (hdl), very low density lipoprotein (vldl) and triglycerides in patients with oral precancerous lesions/conditions, oral cancer and normal subjects. materials and methods: the study comprised of 60 patients with oral precancero...

Anumber of risk factors such as tobacco, human papilloma virus, areca nut, alcohol have been termed in the literature as causative agents for head and neck squamous cell carcinoma (HNSCC).Areca nut, when mixed with tobacco products or wrapped in the leaf of the piper betel plant, named as betel nut. Areca nut chewing is associated with acute as well as chronic effects. The acute effects are wor...