综合一区欧美国产,99国产麻豆免费精品,九九精品黄色录像,亚洲激情青青草,久久亚洲熟妇熟,中文字幕av在线播放,国产一区二区卡,九九久久国产精品,久久精品视频免费

USEUROPEAFRICAASIA 中文雙語Fran?ais
Lifestyle
Home / Lifestyle / News

At a glance

By Liu Zhihua | China Daily | Updated: 2012-09-19 09:35

Common dental diseases and prevention

Tooth decay (dental caries)

Dental caries is an infection caused by plaque, a sticky film on teeth formed from accumulated food debris. Bacteria found in plaque changes sugars into acids, which erodes the tooth enamel to form cavities. It is the most common problem affecting teeth.

Proper oral hygiene - regular brushing, flossing and dental checkups - is the best prevention. The use of dental sealants is another means. Sealants are applied on newly erupted molars to stop food from collecting on the chewing surfaces. Regular follow-ups and checkups are necessary, because sealants can wear out and need to be replaced.

Gum or periodontal diseases

Gum disease is serious infection of the gums caused by invisible plaque, and if left untreated, can lead to tooth loss as the plague destroys the muscles and bones that hold teeth in place.

At the mild stage (gingivitis), the gums become red, swollen, and bleed easily. There is usually little or no discomfort at this stage.

With time, periodontitis sets in, when plaque hardens into tartar. Once tartar forms, it starts to destroy gum tissue and the gum weakens and form pockets around the base of the teeth. Eventually, the tissues and bone are broken down, and teeth will fall out. Often, this destructive process has very mild symptoms.

Proper brushing and flossing daily can remove food debris that cause the start of the disease, and minimize the formation of plaque. Uneven teeth increase the chances of dental problems, and orthodontic treatment will correct that. Systemic conditions such as heart disease, respiratory disease, and diabetes are associated with gum disease.

Regular visits to a dentist are necessary as even brushing and flossing cannot prevent plaque totally, and professional scaling may be needed.

TIPS

What you eat and how often you eat are important factors to dental health. Nuts, milk, crunchy fruits and vegetables, water are all good, while products with a large amount of sugar, such as candy and cookies, are poor choices. Carbonated drinks should also be avoided.

If your gums bleed freely, are discolored or pulling away from your teeth, it is best to see a dentist at once. Other symptoms of bad dental health are bad breath or loose teeth.

Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
南陵县| 双城市| 陆川县| 永泰县| 疏附县| 灵石县| 安阳市| 邵阳市| 利辛县| 盘山县| 虎林市| 咸丰县| 德化县| 柞水县| 北安市| 绍兴县| 永新县| 偃师市| 丹寨县| 南康市| 中西区| 凌云县| 南江县| 华宁县| 彭山县| 来凤县| 苏州市| 科技| 鄂托克前旗| 略阳县| 格尔木市| 汨罗市| 咸丰县| 屯留县| 博客| 隆子县| 郓城县| 永州市| 米林县| 清水河县| 昌图县|