Dental Anatomy Past Paper PDF 2024

13.10.2024 DENT1001 Dental Anatomy Core Textbook Division into Thirds & Anatomical Crown Morphology Dr. İzim TÜRKER KADER Assistant Professor Bahçeşehir Univ...

13.10.2024 DENT1001 Dental Anatomy Core Textbook Division into Thirds & Anatomical Crown Morphology Dr. İzim TÜRKER KADER Assistant Professor Bahçeşehir University School of Dental Medicine Department of Prosthodontics [email protected] Wheeler’s Dental Anatomy Management of Temporomandibular Wheeler's Atlas of Tooth Form Physiology and Occlusion. Disorders and Occlusion McKinley Ash Stanley J. Nelson Jeffrey P. Okeson 5th Edition Elsevier 8th edition Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 1 2 Additional Textbooks LEARNING OUTCOMES After the course the students will be able to; 1. Compare the thirds of the crowns and roots. 2. Distinguish the line and point angles. 3. Explain the measurement of the teeth from different aspects. 4. Summarize the morphological features. 5. Compare the crown morphology of anterior and posterior teeth. Woelfel's Dental Anatomy: Its Relevance to Dentistry Textbook of Dental Anatomy Physiology & Occlusion. Rickne C. Scheid, Gabriela Weiss Rashmi GS. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 3 4 1  13.10.2024 Comparative Tooth Anatomy Comparative Tooth Anatomy Division into Thirds When the surfaces of the crown and root For purposes of description, the crowns and portions are divided into thirds, these thirds are roots of teeth have been divided into thirds, and named according to their location. junctions of the crown surfaces are described as line angles and point angles. A tooth can be divided into thirds in order to define more precisely the location of its specific landmarks such as proximal contacts. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 5 6 Comparative Tooth Anatomy Comparative Tooth Anatomy Cervical To name a line angle, combine the names o the Line Angles two surfaces, but change the “al” ending o the first surface to an “o.” Mesial Distal The line, or angle formed by the junction of two crown surfaces, and its name is derived by Use the following order: mesial is used first; then combining the names of those two surface. distal, facial [buccal or labial] or lingual; and lastly occlusal or incisal. Incisal Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 7 8 2  13.10.2024 Comparative Tooth Anatomy Comparative Tooth Anatomy MESIOBUCCAL DISTOBUCCAL MESIOLABIAL DISTOLABIAL MESIOLINGUAL DISTOLINGUAL MESIOLINGUAL DISTOLINGUAL MESIOOCCLUSAL DISTOOCCLUSAL LABIOINCISAL LINGUOINCISAL BUCCOOCCLUSAL LINGUOOCCLUSAL Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 9 10 Comparative Tooth Anatomy Comparative Tooth Anatomy Point Angles MESIOLABIOINCISAL A point angle is formed by the junction of three MESIOLINGUOINCISAL surfaces. DISTOLABIOINCISAL The point angle also derives its name from the combination of the names of the surfaces forming it. DISTOLINGUOINCISAL Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 11 12 3  13.10.2024 Comparative Tooth Anatomy Comparative Tooth Anatomy MESIOBUCCOOCCLUSAL Dimension of a Tooth MESIOLINGUOOCCLUSAL To describe a dimension of a tooth, terms can be DISTOBUCCOOCCLUSAL combined to denote the direction over which a dimension is taken. DISTOLINGUOOCCLUSAL Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 13 14 Comparative Tooth Anatomy Comparative Tooth Anatomy BOLEY GAUGE Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 15 16 4  13.10.2024 Comparative Tooth Anatomy Comparative Tooth Anatomy Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 17 18 Comparative Tooth Anatomy Comparative Tooth Anatomy Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 19 20 5  13.10.2024 Anatomical Crown Morphology Anatomical Crown Morphology Cusp To study an individual tooth intelligently, one should recognize all landmarks of importance by name. An elevation or mound on the crown portion of a tooth 3 making up a divisional part of the occlusal surface. RIDGE 2 1 CUSP FOSSA SULCUS Elevated and usually pointed projections of various sizes 4 and shapes on the crowns of teeth. TRIANGULAR RIDGE TUBERCLE DEVELOPMENTAL GROOVE PIT They form the bulk of the occlusal surfaces of posterior TRANSVERSE RIDGE teeth, and the incisal portion of canine crowns. CINGULUM SUPPLEMENTAL GROOVE LOBE Incisors do not possess cusps, while canines normally OBLIQUE RIDGE exhibit one cusp, premolars two or three cusps, and molars usually four or more. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 21 22 Anatomical Crown Morphology Anatomical Crown Morphology Tubercle Characteristics that distinguish tubercles from cusps; A smaller elevation on some portion of the crown produced by an extra formation of enamel. I. Tubercles are small, not as large as cusps. Rounded or pointed projections found on the II. The tubercles are rounded, while the cusps are quadrangular pyramid-shaped. crowns of teeth. III. Tubercles are composed of only enamel, dentin is also found in the structure of cusps. Tubercles are not a normal finding, although they are not rare. IV. Tubercles are usually seen in the cingulum of the anterior teeth, especially in deciduous canine teeth. They are also variable in size and shape, but are V. It is rarely found on other surfaces of the crown. usually smaller than cusps. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 23 24 6  13.10.2024 Anatomical Crown Morphology Anatomical Crown Morphology Cingulum The lingual lobe of an anterior tooth. It makes up the bulk of the cervical third of the lingual Ridge surface. Any linear elevation on the surface of a tooth Its convexity mesiodistally resembles a girdle encircling the lingual surface at the cervical third. and is named according to its location (e.g., buccal ridge, incisal ridge, marginal ridge). A large rounded eminence on the lingual surface of all permanent and deciduous anterior teeth, which encompasses the entire cervical third of the lingual surface. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 25 26 Anatomical Crown Morphology Anatomical Crown Morphology Triangular ridge Marginal ridges The rounded borders of the enamel that form the Descend from the tips of the cusps of molars mesial and distal margins of the occlusal and premolars toward the central part of the surfaces of premolars and molars, as well as the occlusal surfaces. mesial and distal margins of the lingual surfaces They are so named because the slopes of each of the incisors and canines. side of the ridge are inclined to resemble two The linear elevations are convex in cross sides of a triangle the cusps to which they section. belong, for example, the triangular ridge of the buccal cusp of the maxillary first premolar. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 27 28 7  13.10.2024 Anatomical Crown Morphology Anatomical Crown Morphology Transverse ridge Oblique ridge When a buccal and a lingual triangular ridge join, they form a transverse ridge. A ridge crossing obliquely the occlusal surfaces of maxillary molars and formed by the union of A transverse ridge is the union of two triangular the triangular ridge of the distobuccal cusp and ridges crossing transversely the surface of a the distal cusp ridge of the mesiolingual cusp. posterior tooth. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 29 30 Anatomical Crown Morphology Anatomical Crown Morphology Cusp ridge Each cusp has four cusp ridges extending in different directions (mesial, distal, facial, lingual) Cervical ridge from its tip. They vary in size, shape, and sharpness. A ridge that extends in the mesiodistal direction Normally, the cusp ridge which extends toward the at the cervical thirds of all the deciduous teeth central portion of the occlusal surface is also a and permanent teeth. triangular ridge. They are named by the direction they extend from the cusp tips. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 31 32 8  13.10.2024 Anatomical Crown Morphology Anatomical Crown Morphology Inclined Plane Fossa The sloping area found between two cusp An irregular, usually rounded depression, or ridges. concavity, on the crown of a tooth. Planes are named by combining the names of There is normally a rather large, shallow fossa the two cusp ridges between which they lie. on the lingual surface of anterior teeth, while posterior teeth exhibit two or more fossae of Normally each cusp exhibits four inclined planes. varying size and shape on the occlusal surface. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 33 34 Anatomical Crown Morphology Anatomical Crown Morphology Types of Fossae Sulcus 1. Lingual fossae are on the lingual surface of incisors. A long depression or valley in the surface of a 2. Central fossae are on the occlusal surface of molars. They are formed by the convergence of tooth between ridges and cusps, the inclines of ridges terminating at a central point in the bottom of which meet at an angle. the depression where there is a junction of grooves. A sulcus has a developmental groove at the 3. Triangular fossae are found on molars and junction of its inclines. premolars on the occlusal surfaces mesial or distal to marginal ridges. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 35 36 9  13.10.2024 Anatomical Crown Morphology Anatomical Crown Morphology Supplemental Groove Developmental Groove Less distinct, is also a shallow linear depression A shallow groove or line between the primary on the surface of a tooth, but it is an auxiliary parts of the crown or root. groove which branches from a developmental groove. Buccal and lingual grooves are developmental grooves found on the buccal and lingual Its location is not related to the junction of surfaces of posterior teeth. primary tooth parts, and it is normally not as deep as a primary groove. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 37 38 Anatomical Crown Morphology Anatomical Crown Morphology Pits Triangular Fossa Groove Small pinpoint depressions located at the junction of developmental grooves or at The grooves located at the end of each of the terminals of those grooves. central grooves and forming the edges of the triangular fossae are called the developmental For example, central pit is a term used to fossa sulcus groove or triangular fossa groove. describe a landmark in the central fossa of molars where developmental grooves join. Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 39 40 10  13.10.2024 Anatomical Crown Morphology see you in next lecture Fissure A crack or narrow cleft that occurs at the base of grooves as a result of the incomplete or faulty merger of enamel tissue belonging to different lobes during the development of the tooth. Don't forget to brush your teeth...  Division into Thirds & Anatomical Crown Morphology DENT1001 Dental Anatomy © Assist. Prof. İzim TÜRKER KADER 41 42 11