Dental Anatomy: Anatomical Features of Teeth & Surfaces of Teeth PDF

13.10.2024 Anatomical Features of Teeth Dental ANATOMY...

13.10.2024 Anatomical Features of Teeth Dental ANATOMY The teeth and its surrounding tissues contain various anatomical features and structures. “Anatomical Features of Teeth” Anatomical crown Anatomical root Alveolar process Alveolus Clinical crown Periodontal ligament (membrane) Clinical root Gingiva Murat KURT Enamel Dentin Professor of Prosthodontics Cementum Bahçeşehir University School of Dental Medicine, Department of Cervical line Prosthodontics Dentino-enamel junction Pulp Pulp Cavity DİŞ BAU Medicine HEKİMLİĞİ Bahçeşehir University School of Dental Global Diş Hekimliği Derneği Dental Structures Supporting Structures Prof. Murat KURT 1 2 Anatomical Features of Teeth Anatomical Features of Teeth Each tooth has a crown and root portion. The crown ROOT Anatomical crown ; That portion of the tooth which is covered by (radix dentis) enamel. is covered with enamel, and the root portion is Clinical crown ; That portion of the tooth which is visible in the mouth. covered with cementum. CERVICAL AREA The clinical crown may, or may not, correspond to the anatomical crown, The crown and root join at the cemento-enamel depending on the level of the tooth's investing soft tissue, and so may also include a portion of the anatomical root. As can be seen from this junction (CEJ). This junction, also called the CROWN (corona dentis) description, the clinical crown may be an ever changing entity cervical line is plainly visible on a specimen tooth. throughout life, while the anatomical crown is a constant entity. Prof. Murat KURT Prof. Murat KURT 3 4 1  13.10.2024 Anatomical Features of Teeth Anatomical Features of Teeth Anatomical root: portion of tooth that is covered with cementum Clinical root: portion of tooth which is not visible in mouth Prof. Murat KURT Prof. Murat KURT 5 6 Anatomical Features of Teeth Anatomical Features of Teeth The crown is covered with enamel, and the root portion is covered with cementum. The main bulk of the tooth is composed of dentin, which is clear in a cross section of the tooth. This cross section displays a pulp chamber and a pulp canal, which normally contain the pulp tissue. Prof. Murat KURT Prof. Murat KURT 7 8 2  13.10.2024 Permanent Dentition Anatomical Features of Teeth The four tooth tissues are enamel, cementum, dentin, and pulp. The first three are known as hard tissues, the last as soft tissue. The pulp tissue furnishes the blood and nerve supply to the tooth. Prof. Murat KURT 9 10 Anatomical Features of Teeth Anatomical Features of Teeth Dentin; The hard tissue which forms the main body of Enamel; The hard, mineralized tissue which the tooth. It surrounds the pulp cavity, and is covers the dentin of the anatomical crown of a covered by the enamel in the anatomical crown, and tooth. It is the hardest living body tissue, but is by the cementum in the anatomical root. brittle, especially when not supported by sound The dentin constitutes the bulk, or majority, of the total underlying dentin. tooth tissues, but because of its internal location, is not directly visible in a normal tooth. Prof. Murat KURT Prof. Murat KURT 11 12 3  13.10.2024 Anatomical Features of Teeth Anatomical Features of Teeth Cementum; The layer of hard, bonelike tissue Dentino-enamel junction; The internal line of which covers the dentin of the anatomical root of meeting of the dentin and enamel in the a tooth anatomical crown of a tooth. Prof. Murat KURT Prof. Murat KURT 13 14 Anatomical Features of Teeth Cervical line; The identifiable line around the external surface of a tooth where the enamel and cementum meet. It is also called the cemento- enamel junction or CEJ. Prof. Murat KURT 15 16 4  13.10.2024 Anatomical Features of Teeth Anatomical Features of Teeth Pulp Cavity; The entire internal cavity of a tooth which contains the pulp. It consists of the following entities: Pulp; The living soft tissue which occupies the pulp a. Pulp canal(s) - That portion of the pulp cavity which is located in the cavity of a vital tooth. It contains the tooth's root(s) of the tooth. and may also be called the root canal(s). nutrient supply in the form of blood vessels, as b. Pulp chamber - The enlarged portion of the pulp cavity which is found mostly in the anatomical crown of the tooth. well as the nerve supply. c. Pulp horns - The usually pointed incisal or occlusal elongations of the pulp chamber which often correspond to the cusps, or lobes of the teeth. Prof. Murat KURT Prof. Murat KURT 17 18 Anatomical Features of Teeth Anatomical Features of Teeth The root portion of the tooth is firmly fixed in the bony process of the jaw, so that each tooth is held in its position relative to the others in the dental arch. That portion of the jaw serving as support for the tooth is called the alveolar process. The bone of the tooth socket is called the alveolus (plural alveoli) Prof. Murat KURT Prof. Murat KURT 19 20 5  13.10.2024 Anatomical Features of Teeth Anatomical Features of Teeth Periodontal ligament (membrane); The fibrous attachment of the tooth cementum to the alveolar bone. Prof. Murat KURT Prof. Murat KURT 21 22 Anatomical Features of Teeth Anatomical Features of Teeth Gingiva (Plural - gingivae); fibrous tissue col; interpapillary saddle enclosed by mucous membrane that covers the interpapillary facial papilla alveolar processes and surrounds the necks of junctional epithelium the teeth free gingiva margin attached gingiva mucogingival junction The crown portion is never covered by bone tissue alveolar mucosa root cementum after it is fully erupted, but it is partly covered at periodontal ligament the cervical third in young adults by gingiva. Alveolar bone Prof. Murat KURT Prof. Murat KURT 23 24 6  13.10.2024 Some Features of Teeth Dental ANATOMY “Groups & Surfaces of Teeth” It is imperative that the same terms are consistently used for the various anatomical Murat Kurt, DDS,PhD areas of the teeth, so that the dental health team can converse in a precise but Professor of Prosthodontics Bahçeşehir University School of Dental Medicine, Department of simple manner. Prosthodontics DİŞ BAU Medicine HEKİMLİĞİ Bahçeşehir University School of Dental Global Diş Hekimliği Derneği Prof. Murat KURT 25 26 Teeth Groups Teeth Groups 13 12 1 21 22 23 18 17 16 15 14 24 25 26 27 28 1 Posterior Teeth; The teeth in either arch which Anterior Teeth; The teeth in either arch which are are toward the back of the mouth. In the toward the front of the mouth. In both the deciduous dentition, this includes the two deciduous and permanent dentitions, the anterior molars in each quadrant or a total of eight teeth. teeth include the incisors and canines, a total of In the permanent dentition, this includes both three per quadrant and twelve in all. premolars and molars, or a total of twenty teeth 48 47 46 45 44 34 35 36 37 38 43 42 41 31 32 33 Prof. Murat KURT Prof. Murat KURT 27 28 7  13.10.2024 Surfaces of Teeth Surfaces of Teeth Facies Dentalis; All anterior teeth exhibit four surfaces and The crowns of the incisors and canines have one edge on their crowns. They are named as follow four surfaces and a ridge, and the crowns a. Mesial of the premolars and molars have five b. Distal c. Labial surfaces. The surfaces are named d. Lingual/Palatinal according to their positions and uses e. Incisal edge (or ridge) Prof. Murat KURT Prof. Murat KURT 29 30 Surfaces of Teeth Surfaces of Teeth Labial Surface (Facialis Labialis Dentis); The outer surface of all upper and lower anterior teeth towards the lips. Prof. Murat KURT Labial Surface (Facialis Labialis Dentis) Prof. Murat KURT 31 32 8  13.10.2024 Surfaces of Teeth Surfaces of Teeth Lingul Surface (Facialis Lingualis Dentis); The inner surfaces of all lower anterior teeth towards the tongue. Prof. Murat KURT Lingual Surface (Facialis Lingualis Dentis) Prof. Murat KURT 33 34 Surfaces of Teeth Surfaces of Teeth Palatinal Surface (Facialis Palatinalis Dentis); The inner surfaces of all upper anterior teeth towards the palatal bone. Prof. Murat KURT Palatinal Surface (Facialis Palatinalis Dentis) Prof. Murat KURT 35 36 9  13.10.2024 Surfaces of Teeth Surfaces of Teeth Mesial Surface (Facialis Mesialis Dentis); The surfaces all upper and lower teeth towards the midline. Prof. Murat KURT Mesial Surface (Facialis Mesialis Dentis) Prof. Murat KURT 37 38 Surfaces of Teeth Surfaces of Teeth Distal Surface (Facialis Distalis Dentis); The surfaces all upper and lower teeth away the midline. Prof. Murat KURT Distal Surface (Facialis Distalis Dentis) Prof. Murat KURT 39 40 10  13.10.2024 Surfaces of Teeth Surfaces of Teeth Insical Edge (Facialis/Margo Incislis Dentis); The chewing/incisor surfaces (during chewing) of the lower and upper anterior teeth. Prof. Murat KURT Incisal Surface (Facialis Incisalis Dentis) Prof. Murat KURT 41 42 Surfaces of Teeth Surfaces of Teeth Facies Dentalis; All posterior teeth exhibit five surfaces on their crowns. They are named as follow a. Mesial Buccal Surface (Facialis Buccalis Dentis); b. Distal The outer surface of all upper and lower posterior c. Labial teeth towards the cheek. d. Lingual/palatinal e. Occlusal Prof. Murat KURT Prof. Murat KURT 43 44 11  13.10.2024 Surfaces of Teeth Surfaces of Teeth Occlusal Surface (Facialis Occusalis Dentis); The chewing surfaces of the lower and upper posterior teeth which contacts with the teeth in the opposite jaw. Buccal Surface (Facialis Buccalis Dentis) Prof. Murat KURT Prof. Murat KURT 45 46 Surfaces of Teeth Surfaces of Teeth OcclusalSurface (Facialis Occlusalis Dentis) Prof. Murat KURT OcclusalSurface (Facialis Occlusalis Dentis) Prof. Murat KURT 47 48 12  13.10.2024 Surfaces of Teeth Surfaces of Teeth Proximal Surface (Facialis Proximalis Dentis); Vestibule Surface (Facialis Vestibularis Dentis); Tooth surfaces that are in contact with adjacent tooth surfaces are called proximal surfaces. The surfaces of the lower and upper teeth towards the “Vestibulum” Oris are called the vestibule surface. Prof. Murat KURT Prof. Murat KURT 49 50 see you in next lecture Don't forget to brush your teeth...  51 13