We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byAndrew Dyke
Modified over 2 years ago
© Food – a fact of life 2009 Development and Maintenance of Healthy Teeth Extension
© Food – a fact of life 2009 Learning objectives To understand the development and structure of teeth. To understand the concept of demineralisation and remineralisation. To understand the importance of good dental health. To know the factors associated with dental caries. To know the factors associated with dental erosion.
© Food – a fact of life 2009 Tooth development and structure Two sets of teeth develop in life: * a primary set, comprising 20 teeth. These appear at about 6 months of age. * a secondary or permanent set, comprising 32 teeth. These replace the primary set between the ages of 6 and 12 years. This set can last for life if cared for properly.
© Food – a fact of life 2009 Tooth development and structure Teeth consist of three tissues, enamel, dentine and cementum. Enamel is a hard substance which forms the outer surface of the tooth. It is composed of calcium and phosphate.
© Food – a fact of life 2009 Dentine Dentine is the major component of teeth which is supplied with nerves and blood vessels. These nerve endings can cause pain if the dentine is exposed in the mouth. Dentine is covered by a thin layer of bone-like material called cementum which holds the teeth in the jaw.
© Food – a fact of life 2009 Dental plaque Dental plaque is a sticky substance containing bacteria, which is present on the surface of teeth. Its presence can be minimised by good oral health - regularly brushing with a fluoride toothpaste and flossing to remove plaque at the gum margin between the teeth.
© Food – a fact of life 2009 Demineralisation and remineralisation Plaque bacteria produce acids by fermentation of sugars, which decreases the pH at the tooth surface. The sugars may already be present in foods or produced by starch breakdown in the mouth. These acids dissolve the minerals in the enamel (calcium and phosphorous) – a process which is known as demineralisation. Enamel demineralisation takes place below a pH of about 5.5 – this has been called critical pH.
© Food – a fact of life 2009 Demineralisation and remineralisation The acids produced by bacteria in the mouth are gradually neutralised by saliva. This causes the pH of the tooth surface to rise above critical pH. The increase in pH causes a return of the dissolved calcium and phosphate back to the tooth enamel. This is called remineralisation.
© Food – a fact of life 2009 Demineralisation and remineralisation If foods or drinks containing carbohydrate are eaten frequently throughout the day, there is little chance for remineralisation to occur. In contrast, if there is sufficient time between meals (approximately 2-3 hours) and the damage is not too great, the teeth can repair themselves through the action of salvia.
© Food – a fact of life 2009 Dental caries Dental caries (tooth decay) is the progressive destruction of the teeth by acid produced by the bacteria on the tooth surface. It occurs when, over a period of time, the process of demineralisation is greater than remineralisation. Attempts to prevent dental caries involve reducing the factors that cause demineralisation, and increasing the factors that lead to remineralisation.
© Food – a fact of life 2009 Factors affecting development of dental caries Some foods may protect against caries. Milk and dairy products, especially cheese, appear to be able to raise pH in the mouth and so reduce tooth exposure to acid. Milk and cheese are both rich in calcium and phosphate, so eating these foods may encourage remineralisation. Such foods may also increase saliva production which increases the pH level in the mouth, and encourages remineralisation.
© Food – a fact of life 2009 Factors affecting development of dental caries Foods high in fibre may help to increase the flow of saliva as does sugar-free chewing gum, helping to clean the surface of the tooth. Sugar-containing chewing gum does not offer protection against dental caries, as the presence of sugar offsets the effect of increased saliva production.
© Food – a fact of life 2009 Factors affecting development of dental caries Fluoride is known to protect the teeth against caries. Fluoride can be incorporated into the tooth during formation; it can also act locally once the tooth has erupted, making the enamel surface of the tooth more resistant to acid; it reduces the production of acids by bacteria in the mouth, and increases the remineralisation process. Fluoride is naturally present in drinking water in some parts of the UK. It is often added where the fluoride content of drinking water is low.
© Food – a fact of life 2009 Factors affecting development of dental caries Sugars are the main dietary component associated with dental caries. Sucrose (table sugar) is most commonly associated with dental caries, although glucose, fructose and maltose seem equally likely to cause caries. How often sugar containing foods and drinks are consumed is more important than the amount of sugar consumed at any one time.
© Food – a fact of life 2009 Factors affecting development of dental caries The more frequently sugars are consumed, the greater the time during which the tooth is exposed to low pH levels at which demineralisation occurs. It is important to encourage less frequent consumption of food and drinks containing sugar so that teeth have a chance to repair themselves. It has been suggested that limiting sugar-containing food and drinks to mealtimes is one way to reduce the incidence of caries. This is because the presence of other foods limits the drop in pH.
© Food – a fact of life 2009 Factors affecting development of dental caries Fresh fruit is not strongly associated with caries. This is thought to be because the sugar is held in the cells of the fruit, and are not released until chewing breaks down the cells. However, the acidity of some fruits and fruit juices (e.g. oranges, lemons, limes) can cause dental erosion - the progressive loss of enamel from the tooth.
© Food – a fact of life 2009 In fruit juice, where the sugars are no longer held in the cells of the fruit, development of caries can occur, especially if the juice is in contact with the teeth for a long period of time, e.g. fed in a babys feeding bottle or swished around in the mouth). Factors affecting development of dental caries
© Food – a fact of life 2009 Another factor is the retentiveness (stickiness) of the carbohydrate. Foods such as dried fruit or toffees may stick to the teeth, reducing the pH in the mouth for a long time. It is important that teeth are brushed regularly each day, with a fluoride toothpaste, to remove any food sticking to the teeth. Regular tooth brushing and the use of dental floss also removes the dental plaque coating the tooth surface and gum margins. Regular visits to the dentist are important to ensure that dental health is maintained. Factors affecting development of dental caries
© Food – a fact of life 2009 Dental erosion Dental erosion differs from dental caries, in that it is not caused by bacteria, but rather by the action of acid (e.g. stomach acid or acidic foods and drinks), which is accelerated by abrasion (e.g. overenthusiastic use of the toothbrush). Approximately 50% of children aged 5 years and 30% of children aged 14 years show evidence of dental erosion.
© Food – a fact of life 2009 Dental erosion Dietary acids play a role in dental erosion. Soft drinks, particularly carbonated beverages (including diet beverages), fruit juices and vinegar all contain mild acids which can promote dental erosion.
© Food – a fact of life 2009 Prevention of dental erosion Dental erosion can be caused by the consumption of acidic foods and drinks, such as carbonated beverages and fruit juices. Therefore, having these drinks with meals, rather than between meals, can help reduce the risk of erosion. Also consuming such drinks through a straw can help prevent erosion, as this helps reduce contact with the teeth. Swishing such drinks around the mouth, a common practice among some children, should be discouraged.
© Food – a fact of life 2009 Prevention of dental erosion As acidic foods and beverages soften the enamel of teeth, it is important not to brush teeth for at least one hour after consumption of such foods and drinks. Leaving such a period of time between consumption and brushing will allow enamel to remineralise.
© Food – a fact of life 2009 Review of the learning objectives To understand the development and structure of teeth. To understand the concept of demineralisation and remineralisation. To understand the importance of good dental health. To know the factors associated with dental caries. To know the factors associated with dental erosion.
© Food – a fact of life 2009 For more information visit
1 Why Baby Teeth Are Important Right now, your child has 20 baby teeth. v By about 18 years old, your child will lose their baby teeth to make room.
by Abbey Flick Topics What You Will Learn Why Our Teeth Are Important Types and Purposes of Teeth Parts of a Tooth Tooth CareTooth Care Tooth Decay Summary.
How Do I Help My Child Care For Their Teeth And Prevent Cavities? Teaching your child proper oral care at a young age is an investment in his or her health.
The Teeth © PDST Home Economics. Healthy Teeth & Gums Help us to digest food Help us to digest food Make us look better Make us look better Good health.
Teeth (singular, tooth) are structures found in the jaws of many vertebrates. The primary function of teeth is to tear, scrape, chew and grind food.
Section 9 Healthy Teeth and Gums For Use with the KS2 Science Curriculum Topic 3A Adapted by Oral Health Promotion, Devon 2014.
Community Health Forum Presents Dental Health and You.
Watch the picture on the screen. This shows what can happen to your teeth if you do not look after them properly. This is called tooth decay. If you eat.
The effects of soft drinks on teeth ACID ATTACK. What we will learn today: By the end of the lesson we will: Be able to describe tooth decay or erosion.
Happy, Healthy Smiles Denise Reyes CSUF Dietetic Intern.
Looking after Children’s Teeth Produced by the Oral Health Promotion Department part of Buckinghamshire Priority Dental Service.
Chapter 14, Lesson 2 Guided Reading Activity 51 Care of Teeth and Mouth.
GOT DENTAL SEALANTS? Kathy Stinely, BSN, RN * Primary (baby) teeth * Chewing * Pronounce words * Placeholders for permanent teeth * Start losing around.
1 1 SCIENCE of TOOTH DECAY and GUM DISEASE SCIENCE of TOOTH DECAY and GUM DISEASE.
1. Hand in and Review last nights Homework 2. Notes – Teeth and Eye 3. Start of Teeth Experiment.
Tooth Decay By: Khalifa 7B Learning objective By the end of this Power-Point you will be able to: Describe how tooth decay affects health. List ways.
Oral Health Missouri Department of Health and Senior Services Oral Health Program Fourth Grade.
Lesson 2 How can you keep your teeth healthy? You can keep your teeth healthy by practicing good oral hygiene. Care of Teeth and Mouth.
Chapter Eating Habits Eating habits and the amount of physical activity that children participate in are largely determined by their parents.
Tooth decay By mohammed la marzouqi. What is tooth decay. Decay is the destruction of tooth structure. Decay occurs when plaque, the sticky substance.
DENTAL FACT OR FICTION DRILLING THE WAY TO THE TRUTH.
Fluoride Fluorides and their role in clinical dentistry.
Looking After Your Oral Health Oral Health Fact: Following these key strategies is the best way to prevent tooth decay and gum disease! Five key strategies.
Healthy Teeth and Mouth (3:04) Click here to launch video Click here to download print activity.
Module 6 Food and your teeth. What is tooth decay? Tooth decay is the damage of the tooth.
Seniors Are At High Risk For Cavities BeforeAfter.
5.1 Notes To keep your teeth and gums healthy, brush and floss daily. At least brush twice a day. Soft bristle tooth brush Replace the tooth brush.
Oral Hygiene: Teeth Cleo Lacey, Savannah Spirov, Mara Maus P.2.
September 27, 2016 Bell Ringer: make a list of ways to keep your teeth healthy. Circle the behaviors you engage in regularly. Put a star next to the ones.
Dental Health Fourth Grade. WHY DO WE NEED TEETH? Eat Talk Smile Try saying the word “teeth” without touching your front teeth with your tongue.
What is tooth decay? Tooth decay is the damage of the tooth.
Teeth to Treasure Grades: 4 to 6. What is oral health?
Dental Hygiene Fight Against Tooth Decay. Tooth Decay Did you know germs live inside your mouth? Some of these germs gather together and form a sticky,
Seniors Oral Health. Seniors Oral Health Introduction Maintaining healthy teeth and gums at any age is an important part of preserving your overall good.
Teeth Two sets of teeth grow into your mouth during your life. When you were born, all these teeth were hidden inside your gums. You looked like you had.
Infant Oral Health Care Preventing Early Childhood Caries.
Age-One Dental Visits The Importance of Caring for Baby Teeth.
DIABETES How diabetes can/will affect your oral health Why your mouth is dry; and how that will affect your mouth Root caries What we can do.
Learning Intentions To learn about dietary related diseases; how they develop, what can be done to prevent them.
Section 14.1 Your Teeth and Gums Slide 1 of 25 Objectives List the functions of teeth and gums. Identify two structural problems of the teeth and mouth.
Overall Classification: UNCLASSIFIED//REL TO NATO/ISAF.
CSUF Pre-Dental Society Dental Outreach Program Commonwealth Elementary Fullerton, CA TODAY!! 12:45pm – 2:00pm Outreach Points: 3 points.
HEALTHY CHOICES: Care of Your Teeth Ms. Mai Lawndale High School.
Chapter 14 Personal Care Section 1 Your Teeth and Gums.
Dental Caries By Mary Kay and Emily Cooper. What is Dental Caries Another word for tooth decay Formed from the accumulation of dental plaque.
Tooth Decay Created by: Ke’Onta Tyneshia Alexis Jaquan.
Dental Hygiene What You Need to Know About Taking Care of Your Teeth.
University of Palestine College of Dentistry DR. MUSTAFA I. ELGHOUL B.SC,B.D.S,MS(ORTHO) Master of Orthodontic PREVENTIVE DENTISTRY AND NUTRTION.
Teacher: Samar Mahmoud. CAVITIES! Ninety-seven percent of all the people in the world have cavities. If you don’t brush your teeth you get cavities, and.
© 2017 SlidePlayer.com Inc. All rights reserved.