The Teeth

Introduction

Hello boys and girls!! Welcome to LC learning forum created by Latoya Campbell. This website was created to help students understand how to take care of the teeth.

Did you know that humans have five types of teeth?

Stay tune boys and girls, THERE IS A LOT TO LEARN.

 

 

 

Task

Image result for picture showing types of teeth

Your tasks for this lesson are the following:

  • Learn about the different types of teeth ant its structure.
  • Learn how to care for the teeth.

 

Have funnnn!!!!   Image result for teeth emoji 

Process

https://s3.amazonaws.com/pix.iemoji.com/images/emoji/apple/ios-12/256/waving-hand.png Hey guys!! Before we dive in the lesson, we are going to watch an informative video about the teeth. https://www.youtube.com/watch?v=8urtKDiFOY8

    Evaluation

     To see how much you score, click on Submit Quiz for Marking

    Steps:

    •  Click the link to complete a quiz to test your knowledge on what you know about the teeth. http://www.myquizzes.ca/viewquiz.asp?quiz_id=22953&quizname=The%20Teeths
    • The goal of the quiz is to see if you have grasp the concept the teeth
    • Make sure you take the necessary notes
    • Once the quiz have been completed we can move on to the next step which is the conclusion.

    Rating

     

    Questions

    Submitted Answers

    Correct Answers

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    Number of correct answers _______________

    Number of incorrect answers _____________

    Candidates result: _____________________ (Pass/Fail)

     

     

    Conclusion

     

    Image result for awesome job emoji gif

    Now that you have finished the lesson you should feel a sense of accomplishment!!! Great job!! Here is a review of what you have learned....

    The Teeth

    Teeth are hard, mineral-rich structures which are used to chew food. They are not made of bone like the rest of the skeleton, but have their own unique structure to enable them to break down food.

    Tooth enamel is the most mineralized tissue in the body, consisting mainly of the rock-hard mineral hydroxyapatite. Hydroxyapatite is also found in some rocks and makes up part of the mineral/protein matrix of bones.

    Some animals have the ability to replace their teeth throughout their lifespan, as teeth may be lost due to injury or disease. Humans have two sets of teeth: baby teeth which loosen and fall out prior to adulthood, and adult teeth which stay in place throughout adult life.

    The shape and number of an animal’s teeth vary according to what they eat. Here we’ll discuss the functions of different types of teeth, as well as the structure and different tissues which make up human teeth.

    Function of Teeth

    Teeth assist animals in obtaining food and breaking it down for efficient digestion. Animals that lose their teeth are generally unable to ingest enough nutrients to survive.

    The specific mechanical function that teeth must perform depends on the animal’s food source. The animal may need to pierce skin and tear meat, grind up fibrous vegetables, or do some combination of the two.

    Predators often boast sharp, pointed or even serrated teeth to assist them in taking down prey and eating raw meat.

    Herbivores on the other hand typically have long, sharp incisors at the front of their mouths to assist in cutting bite-sized pieces off of plants and well as molars with broad, textured surfaces in the back of the mouth which grind and break down plant matter for easier digestion by the stomach.

    Humans eat both meat and a variety of plant matter. As a result, we have several types of teeth which are good for breaking down different types of food:

    • Front teeth, or incisors, which cut food into bite-sized chunks.
    • Sharp, pointed “canine” teeth, which can be used to tear chunks off of meat and other foods.
    • Molars and pre-molars which crush vegetable matter and other foods into a pulp.

     

    Structure of the Tooth

    Tooth Anatomy 

    The structure of a human tooth includes the following tissues:

    • Enamel – The hard, calcified outer covering which is used to break down food. Enamel consists primarily of a matrix of hydroxyapatite – a mineral made of crystalline calcium phosphate which is created by the body’s cells during tooth development. Hydroxyapatite can also be found in some rocks, and in the mineral/protein matrix that makes up the hard outer shells of our bones.
    • Dentin – A softer, more vulnerable material which serves as a last line of defense for the tooth pulp in the event that enamel is broken or dissolved.
    • Cementum – a bone-like tissue that includes both hydroxyapatite and connective proteins. This tissue attaches the tooth to the periodontal ligaments, which hold the tooth firmly in place within the jawbone.
    • Pulp, which contains blood vessels and nerves used to keep the tooth healthy and alert the organism to dangerous tooth injuries and infections.

    The tooth is often broken down by dentists into the following major regions:

    • The root, which consists of dentin and pulp, with a covering of cementum that anchors the tooth to the jaw. The root is especially vulnerable to injury and infection because it lacks protective enamel.
      Infections of the tooth’s root can spread into the bloodstream or the surrounding jaw and tissues, which is why infections of a tooth’s root require prompt and thorough medical attention.
    • The neck, which is the place where the cementum of the root meets the enamel of the tooth’s crown. The root has a thin layer of enamel and a thick layer of dentin protecting the root.
    • The crown, which consists of a thick enamel surface that is used to cut and grind food. A thick layer of dentin lies under the enamel, between it and the pulp of the tooth.

    Link to Podcast: https://voca.ro/6zWZYP6k9X8

     

    Credits

    Advantage Career Institute. (2019, November 7). Five Types of Human Teeth & Their Function: ACI NJ. Retrieved November 11, 2019, from https://aci.edu/five-types-human-teeth-function/.

    Editors, B. D. (2017, September 7). Teeth. Retrieved November 11, 2019, from https://biologydictionary.net/teeth/.

    The Teeth. (n.d.). Retrieved November 11, 2019, from https://www.youtube.com/watch?v=8urtKDiFOY8.

     

    Teacher Page

    Grade: 4

     Subject: Science

    LESSON OBJECTIVES

    a.       Cognitive Objective- The student will be able to build on prior knowledge about the teeth

    b.      Affective Objective- The student will be able to share their feelings about the teeth by writing about the functions and structure of the teeth.

    c.       Psychomotor Objective- The student will be able to role play drama pieces concluding the lesson.
     

    The following are the lesson objectives used to create this webquest:

    1.      Explain briefly what the teeth are

     

    2.      List the two sets of teeth and state how many teeth are in each set.

    3.  State and explain the function of the teeth.

    4. Explain the structure of the teeth.

    5. Draw and label the teeth