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Over the past few decades, the number of people keeping their natural teeth has steadily increased. Karen is right, better dental care is much more widely available now than it was in the past.  Many factors have contributed to this improvement of oral health, some of which are still being studied.
The graph below shows the number of teeth that people in different age groups had circa 1990 and 2000.  I made it using the data from this study.
For the purposes of this study, a full set of teeth is defined as 28 teeth.  This does not include the wisdom teeth, since they are often extracted. Between 1990 and 2000, the number of natural teeth that adults across all age groups had noticeably increased. The number of [people missing all their teeth] in the age groups 40-70 years was reduced from 16 per cent in 1973 to 8 per cent in 1993, and to 1 per cent in 2003. The average number of teeth people kept increased.  Up to the age of 60 years, people generally kept all of their teeth.

During the 30-year period,the number of carious lesions and restorations generally decreased. In 2003 the bone level at the age of 60 years corresponded to the bone level at the age of 40 years in 1973.  Bone level is an important measurement used to determine gum health. The comparison of the four studies shows that there has been a great overall improvement in oral health over this 30-year period. Oral health is improving.  It could be because of the increased availability of fluoride, better oral hygiene, higher quality dental care, or a combination of many factors.
Do you have any questions or comments on oral health and aging?  Please leave them in the comments below.  If you liked this article, share it with a friend! I have always wondered if a crown is considered a natural tooth for the purpose of these studies. Hi Linda – As long as there is a natural tooth root anchored in the jawbone, then it is a natural tooth.

I started this site to help you have a better understanding of dentistry so that you can make informed decisions regarding your dental treatment.
Pulpitis: What’s the Difference Between Reversible Pulpitis and Irreversible Pulpitis? DisclaimerThis site is intended for educational, informative, and entertainment purposes only. Only a health professional that is examining you in person, with a patient-doctor relationship can truly understand your unique situation.
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