5.2 ORAL CAVITY
Ten percent of all malignant tumours of the head and neck occur
in the oral cavity and 95% being squamous carcinomas.
Risk is higher in male than in females.
ETIOLOGY
There is a strong relation between smoking and oral carcinomas,
in regions where oral cancer has the highest mortality.
IN ANDHRA PRADESH
A state in India-there is prevalence of a carcinoma of the palate
called "Chutta Cancer" in smokers.
It is possible that thermal trauma and tobacco tar provide the
carcinogenic stimulus.
IN UTTAR PRADESH AND BIHAR
Tobacco and slaked lime is habitually sucked by men in some
districts.
A quid is kept in the lower gingivo-labial fornix for hours during
the day.
A high incidence of carcinoma is found at this site.
Betal nut chewing is practice among Indian, Javanese and
Malayans. Ground betal nut and slaked lime used results in a
high incidence of cancer.
Alcohol has a suggested role in oral cancer, poor oral hygiene
and oral sepsis are also present in this group and may have a
contributary role.
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