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Overcoming oral odour

Tips for fresher breath
Science has not completely understood the intricacy of halitosis. Although the recognition and treatment of halitosis may seem insignificant in the panthesis of medical conditions, it has a dramatic effect on a person's life and relationships. Here are some tips that will help relieve your fear of halitosis and make you more confident.

*Gently clean the very back of your tongue with a tongue cleaner (soft bristled small tooth brush may help). Take care not to damage your tongue. Just sweep the mucus layer away. Practice helps to overcome the vomitish feeling.

*Eat a good breakfast; it cleanses the mouth, and gets the saliva flowing.

* Prevent your mouth from drying out. Chewing gum for just a few minutes can reduce bad breath. Drink sufficient quantities of liquids.

* Use a mouth wash (Consult your dentist because some can stain your teeth). The most effective method is to rinse and gargle just before sleep. This prevents build up of micro organisms and odour during the night.

* Clean your mouth after eating odorous foods or drinks such as garlic, onions, curry and coffee. Make sure to clean between your teeth after eating food or beverages rich in proteins.

* Brush and floss (Ask your dentist how to use dental floss).

* Ask an adult family member or close friend about your breath. This is the most reliable way to find out if you have halitosis.

By Dr. Buddika Dassanayake
Bad breath, medically termed Halitosis [from Latin halitus (breath) and the Greek osis meaning abnormal conditions] is attracting growing public attention. It traverses a wide range of scientific fields including dentistry, medicine, bacteriology, biochemistry, physiology and not suprisin-gly, psychology. The extent to which this phenomenon of bad breath has drawn public attention is well reflected in American market research studies.

According to reports, Americans spend $1.8 billion on toothpastes, $715 million on oral core gum, $740 million as mouth washes and other dental rinses and almost $950 million on tooth brushes and dental floss annually. Significantly, $625 million is spent on breath freshners which are exclusively aimed at safeguarding fresh breath.

So, where does halitosis come from? According to recent scientific studies carried out in this area, 85-90% emanates from the mouth, 5-10% from the nose, 3% from tonsils and about 1% from other sites. Whatever the site of origin it is the result of microbial metabolism which is not different from the body odours that emanate from a person's underarms and covered feet.

Our mouth is inhabited by hundreds of bacterial species. These tiny organisms that particularly depend on proteins for their nutritional needs produce some truly fetid chemical compounds. Some of the bacteria that feed on sugars also play a role in producing a malodorous mouth because sugars are often present as glycoproteins (a combination of sugar and protein).

Some of the bacteria that are unique in producing halitosis are Treponema denticola, Porphyronomas gingivalis and Bactriods forsyths. Scientists have recently found that the microbiota on the tongue differs from those species living in plaque on teeth and gums. In otherwise healthy people the very back of the tongue is the source of malodour rather than teeth or gums. Microbes happily lodge in the small invaginations found in that area which are poorly cleansed by saliva.

One might be tempted to conclude that eradication of all micro organisms on the tongue would be a potential treatment for halitosis. These bacteria, however, play a protective role. Ordinarily, the tongue harbours some fungus (candida albicans) in small numbers. This population is kept in check by the presence of bacteria. When tongue bacteria are wiped out, the fungus can run rampant. And fungal diseases are more severe and difficult to control than halitosis. So it is wiser to keep bacterial population present, but under control.

Other oral sources of bad breath include poor oral hygiene, gum inflammation, faulty dental work, unclean dentures, food particles collected in cavities of teeth, and pus produced by oral infections. Because a steady flow of saliva washes away bacteria and their products, anything that promotes dryness - mouth breathing, fasting, dehydration, prolonged talking, stress, radio therapy, salivary gland diseases, medications and tobacco smoking will aggravate the situation.

Apart from the mouth, the nose and the nasal passages also account for 5-10% of bad breath cases. Here the odour comes mainly, out of the nose. Nasal odour may result from inflammation of air cells in facial bones (Sinusitis) or conditions that impede or block the nasal secretions, such as an embedded bead in the air way. If a child suddenly develops an overall offensive odour it is wise to have a good check up for any blockage in nasal passages.

Suppurated tonsils may account for about 3% of halitosis cases. Small stones called tonsilloliths grow in the crypts of the tonsils and consist of partially calcified bacteria and debris. Tonsilloliths smell foul themselves but don't always cause bad breath. They are relatively uncommon, and because they do not usually cause any medical problems, many physicians and dentists have never heard of them.

A lingering mystery is why people tend to be exquisitely sensitive to the breath quality of their fellows and notoriously bad at smelling their own. The answer to this may be simply because, we expel air from our months horizontally and only subsequently breathe in vertically through our nose, so the chance of getting a representative whiff is low. Whatever the reason it is difficult for someone to know if he or she has bad breath without being told. And given the embarrassment involved, being told is unlikely.

Ironically, billions of dollars are spent on breath freshening products annually, most probably by individuals, who do not have a problem but merely fear they do. An extreme version of this common belief is the phenomenon of "Halitophobia".
(Prepared from "Scientific American")


Answering some questions, raising some more
This book is the latest ad dition to the expanding literature on the history of western medicine in Sri Lanka. Earlier work on the subject includes Vanderstraatten 1975, Wijerama 1947, Dias l980, and Uragoda 1987. Of the various studies undertaken so far, the monograph by Kamalika Pieris comes closest to a sociology of medical profession in Sri Lanka. Following the lead given by Kamalika Pieris, one has to venture into the history of medical profession in Sri Lanka in order to configure the significance of past personalities that continue to figure in the contemporary urban landscape and social history of Sri Lanka. This includes towering figures in the history of the medical profession in Sri Lanka, including Sir Marcus Fernando, E.M. Wijerama, E.V. Ratnam and Senaka Bibile.

The period covered in this book requires some comment. The story begins in 1843, the year in which the first batch of qualified Sri Lankan doctors returned to the island, after completing their studies in the famous Bengal Medical School in Calcutta that served as an important training ground for Sri Lankan doctors prior to the establishment of the Colombo Medical School in 1870. Kamalika Peiris' account of the history of the medical profession ends in 1980 on the declared grounds that the private sector in health care reached new heights since that year. Not everyone will agree with this periodicasion, but nobody can dispute the fact that the western medical profession in Sri Lanka took its distinctive shape during the period under consideration.

The book consists of 9 chapters. The first two chapters deal with the origin and development of western medical profession in Sri Lanka. The key areas explored include development of medical education, increased popularisation of western medicine and establishment of a legal framework for western medicine. In British Ceylon two contrasting agencies, namely military and missionaries, played an important role in introducing western medicine to the island. It would be useful to explore further what distinctive impact it had on the nature of western medicine introduced to the island and how it was perceived by the public.

Chapter 3 investigates the development of professional organisations and trade unions within the western medical profession in Sri Lanka. The focus is on the origin and development of the Sri Lanka Medical Association (SLMA) and Government Medical Officers Association (GMOA), with the former as a professional association committed to promotion of western medicine and the latter as a trade union representing the interests of western medical practitioners in government service. The development of professional organisations must be seen as an important aspect of professionalisation of any occupational group. From this point of view, the development of GMOA as a powerful pressure group can be seen as an important landmark in the professionalisation of western medicine in Sri Lanka.

Chapters four and five cover the development of western medicine in government and private sectors. The focus is on development of specific institutions, medical services and categories of health workers ranging from medical officers to apothecaries. The first hospitals in British Ceylon mainly catered to well-defined imperial interests such as military, British residents and plantation communities. The health services for the rest of the population were mainly dictated by frequent outbreaks of epidemics such as small pox, cholera, plague and malaria. How this situation finally gave way to a well-developed welfare state with free and at the same time quality health care available for a vast majority of population in the country is not fully examined in the monograph.

Even though this book is primarily devoted to the study of history of western medicine in the country, chapter 6 titled "Modern versus traditional health care" provides a useful diversion into the relationship between western and indigenous forms of medicine within the Sri Lankan context. On the whole the analysis centres on how ayurveda, including deshiya chikitsa, is gradually eclipsed by western medicine. The author attributed this trend to perceived and empirically demonstrated greater effectiveness of western medicine in the treatment of specific ailments and in the control of devastating epidemics affecting the country.

Chapters 7 to 9 deal with important sociological issues relating to the professionalisation of western medicine in Sri Lanka. Since the latter part of the 19th century, ascendance to the western medical profession has been a primary goal of social mobility. In the early period Dutch Burghers and Jaffna Tamils were highly over-represented in the medical profession in Sri Lanka. Among the Sinhalese, the Karawa caste obviously had a privileged access to the medical profession. Following the development of a free education system since 1940s, this situation gradually gave way to a more open pattern of recruitment and greater access to the profession for hitherto excluded sections of society.

The author Kamalika Pieris and Visidunu Publishers must be congratulated for bringing out this important volume. It can be a useful guide to medical practitioners, historians and social scientists alike. As a sociology of the medical profession, it answers some important questions but even more importantly it raises some issues that require further research.

(The reviewer is Professor of Sociology at the University of Peradeniya and currently Executive Director of the Centre for Poverty Analysis in Colombo).


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