Not really , all the changes that happen when we're getting older can give us dental caries . Also after gingival recession and problems with gingiva came the exposed root to oral environment . The root part of teeth was covered by cementum which have less strength than enamel . So it is the start of caries and thermal sensitivities . It was found that elderly people ( from 50 age up ) have high incidence of cervical caries . Besides there are secondary caries which can happen around the old filling . That is because in their childhood they didn't take care of their oral hygiene well enough and they also have many filling . As time pass this filling became old and always broken or leak so there came dental caries.

  One thing we always feel when we're getting older is that our teeth get more yellow and it hard to whitening them. There are 2 reasons for this , first , it was because of the bacteria accumulate faster and easier as time pass . So we need dentist to clean them off . Second , which is not actually a problem, as we're getting older there are changing of dentin's color beneath the enamel that 's why they're getting yellow.

  There have been reported that cigarette and tobacco can increase incidence of oral cancer ,gingivitis and periodontitis destroying attachment of bone and gingiva to teeth .
  This can cause thermal sensitivity and dental caries. Also smoking can irritate healing of wound in mouth ,halitosis and staining tongue.

    There are 2 main function of primary teeth. First , they keep the space for secondary teeth to erupt in the right position . Second , normally the primary teeth 's root guide secondary teeth to erupt in the right position. If primary teeth happen toextract before the right time ,the wound would be healed and it would be difficult for secondary teeth to erupt.
  Indication for extracting primary teeth
    1. Secondary teeth erupted in the wrong position because of primary teeth
    2. Problems of chewing associated with primary teeh ( mostly happen with infected teeth)
    3. Unerupted secondary teeth caused by ankylosed primary teeth

    Yes , exactly as we know that children have higher incidence of dental caries than adult .But that doesn't mean they didn't get a chance .Root caries are the most common dental caries of the elderly people .When we received fluorite ,it can help strenghtening the outer surface of teeth so that can decrease dental caries .The easily way to get topical fluorite is to use toothpaste with fluorite or apply topical fluorite by dentist.

  The best way is to keep your god oral hygiene. That's because the reason of gingivitis is dental plaque which can be cleaned by brushing teeth 2 times before going to bed and in the morning with dental floss at least once a day . And for the persons that easily have gingivitis ,they should brush and floss their teeth every time after meals.

  Actually, in the past electrical toothbrush are uses for handicapped people who cannot use their hand properly ,but now they are develop for normal people .The efficiency : There is no different comparing ordinary and electrical toothbrush in cleaning plaque. But electrical toothbrush is more effective if the way of brushing teeth is incorrect.

Advantage : electrical toothbrush very easy to use : just hold the toothbrush

Disadvantage : electrical toothbrush is more expensive than ordinary toothbrush.