tailieunhanh - Ebook Textbook of dental anatomy and oral physiology: Part 2

Part 2 book “Textbook of dental anatomy and oral physiology” has contents: Deciduous dentition, occlusion, vascularity and innervation of maxilla and mandible, tooth anatomy and forensic odontology, trait features of teeth, calcium and phosphorus metabolism, functions of teeth, saliva, and other contents. | Chapter 9 Deciduous Dentition Manjunatha BS, Rajashekhara BS, Mallikarjuna M Rachappa Introduction Until now in this textbook, the deciduous dentition has been given modest importance. Though the deciduous teeth have been given less significance than to the permanent teeth, they are nevertheless important and will be discussed in this chapter. Until the last decade or so, most parents were responsible of ignoring the value of the deciduous teeth of their children. However, it is very unfortunate that, many dentists also overlooked deciduous teeth. As a consequence, the primary teeth were considered as simply a transitory phase in the more important process of getting a brand new set of permanent dentition. Occasionally, deciduous teeth were given a little attention and the routine treatment was extraction of any deciduous tooth, which had resulted in pain to the child. The majority of such cases due to or lack of or this attitude of treatment resulted in loss of space with the potential for crowding and malocclusion in the permanent dentition. Fortunately, at present attitudes have changed and the dental profession along with the general public have an extra practical importance of the primary teeth. As indicated earlier in chapter one, there are a total of twenty deciduous teeth, five per quadrant. Each quadrant has two deciduous incisors and one canine in the anterior segment, similar to that of the permanent dentition. However, deciduous teeth exhibit a functional role similar to their permanent counterparts. The synonyms of deciduous dentition are: • Milk teeth • Baby teeth, meaning they are present during lactation • Primary teeth • Temporary teeth • Juvenile teeth • Lacteal teeth. Most important functions of deciduous dentition are as follows: • Cutting, shearing, grinding and mastication of food substances • Maintenance of normal facial appearance • Formulation of normal speech during development • For proper diet, in turn for general development of an