How many 70 year olds have all their teeth?

Very few 70-year-olds keep all of their natural teeth, with only about 1% to 2% retaining a complete set of 32 teeth.

Tooth Loss Facts for Older Adults

• Averages: Seniors aged 65 and older have an average of about 21 remaining natural teeth rather than a full set.
• Complete Tooth Loss: About 10.6% of adults aged 70 to 74 have lost all of their natural teeth (edentulism), a number that rises past 17% for those over 75.
• Main Causes: Most tooth loss in older adults is caused by gum (periodontal) disease, decay, and wear over time, rather than aging alone.
• Risk Factors: Rates of tooth loss are higher among people who smoke, have lower income or education levels, or live with chronic health issues like diabetes.

The average 70-year-old has around 20 to 21 remaining natural teeth, out of a full set of 28 to 32.

Key Details on Tooth Loss at Age 70

• Partial Loss: Most people have lost a few teeth by age 70, but having all 32 natural teeth is rare (only about 1% to 2% of older adults keep every tooth).
• Complete Tooth Loss (Edentulism): Roughly 13% to 15% of adults aged 65 to 74 have lost all of their natural teeth.
• Influencing Factors: The number of remaining teeth is often lower for individuals who smoke, have lower household incomes, or lack access to regular dental care.
• Data Sources: According to data from the National Institute of Dental and Craniofacial Research (NIDCR), senior citizens retain an average of roughly 21 teeth.

Demi Moore lost her front teeth due to severe stress.

The Story Behind the Tooth Loss

• Stress: Demi Moore shared on The Tonight Show Starring Jimmy Fallon that extreme stress caused her front teeth to fall out.
• The Reveal: She even showed a photo of herself missing a front tooth to prove it.
• No Dramatic Injury: She joked that she wished it happened during a cool activity like skateboarding, but it was purely stress-related.

How She Fixed It

• Partial Dentures / Implants: She used temporary or partial tooth replacements (like a partial denture) in daily life while getting permanent dental work.
• Modern Dentistry: Dentists replaced the missing teeth with advanced procedures like dental implants or crowns.

Seniors do not start losing teeth at a single fixed age, but the risk of tooth loss increases significantly after age 50 and accelerates past age 65.

The Timeline of Adult Tooth Loss

• Ages 35 to 49: Adults retain about 25 teeth on average, but early signs of wear, gum recession, or minor loss can begin.
• Ages 50 to 64: Adults average about 22 to 24 remaining teeth, and tooth loss becomes more measurable. Data from the CDC Oral Health Division shows about 10% of adults aged 50–64 experience complete tooth loss.
• Ages 65 and Older: Seniors have an average of about 18 to 21 remaining natural teeth, and roughly 13% to 28% experience complete tooth loss (edentulism), according to the National Institute of Dental and Craniofacial Research.

Why Seniors Lose Teeth

• Gum Disease (Periodontitis): This is the leading cause of tooth loss in older adults, driven by long-term plaque buildup that destroys supporting bone and gum tissue.
• Root Decay: As gums recede with age, soft root surfaces become exposed to bacteria and decay much faster than enamel.
• Dry Mouth (Xerostomia): Many common medications for high blood pressure, heart disease, and diabetes reduce saliva flow, which normally protects teeth from bacteria.
• General Wear and Tear: Decades of biting, chewing, and potential teeth grinding (bruxism) weaken the structural integrity of teeth.

Very few 80-year-olds retain all of their natural teeth, but exact figures for a complete set of 32 (or 28 without wisdom teeth) are rare, as public health data typically measures functional retention—such as having at least 20 remaining teeth.

Average Tooth Loss at Age 80

• Average count: An 80-year-old typically has about 15 to 19 natural remaining teeth out of a full set.
• The 20-Tooth Goal: Public health campaigns, like the Japan Dental Association's "8020" movement, target having at least 20 natural teeth at age 80 to maintain proper eating and speaking functions. Roughly 60% of 80-year-olds in specific regional studies meet this 20-tooth threshold.
• Complete Tooth Loss (Edentulism): Data from the Centers for Disease Control and Prevention shows that about 20% (1 in 5) of adults aged 75 and older have lost all of their natural teeth.

Key Factors in Retaining Teeth

• Polarized Distribution: Dental researchers note that tooth retention at age 80 is heavily split: people either practice rigorous preventative care and keep most of their teeth, or face compounding issues leading to heavy loss.
• Socioeconomic Status: Higher income and university-level education heavily correlate with a greater likelihood of keeping natural teeth due to better access to routine dental checkups.
• Health Habits: Smoking, a high-sugar diet, and untreated periodontal (gum) disease are the leading drivers of late-life tooth loss.