Lec 4 Maxillary Landmarks PDF

10/24/2023 Intraoral Anatomic Landmarks I. Maxilla Dr. Arwa Mousa Lecturer of Oral and Maxillofacial Radiolgy Cairo University [email protected] Learning Objectives Identify and describe the normal tooth anatomy and the surrounding supporting...

10/24/2023 Intraoral Anatomic Landmarks I. Maxilla Dr. Arwa Mousa Lecturer of Oral and Maxillofacial Radiolgy Cairo University [email protected] Learning Objectives Identify and describe the normal tooth anatomy and the surrounding supporting structures on a dental radiograph 03 Identify and describe the normal anatomic landmarks of the maxilla on a human skull and on a dental radiograph Identify the radiographed region on an intraoral radiograph through knowledge of normal anatomical landmarks Differentiate maxillary from mandibular teeth and right from left radiographs mounted digitally 1  10/24/2023 Table of Contents Maxillary Premolar 01 01 Teeth Anatomy 04 Area Landmarks 02 Maxillary Incisors Maxillary Molar 03 02 Area Landmarks 05 Area Landmarks 04 Maxillary Occlusal 05 Maxillary Canine 03 Area Landmarks 06 Radiograph Landmarks 06 Radiology Cencepts 01 02 03 03 04 05 06 2  10/24/2023 Radiology Cencepts Radiolucent RL Radiopaque RO Landmarks Landmarks Examples Examples 03 Cavity/Sinus (Hollow space) Ridge (Linear bone prominence) Foramen (Small opening in bone) Septum (Bony partition) Fossa (Broad depressed area in bone) Tubercle(small bony bump) Canal (Tube like passage in bone) Tuberosity(Rounded bone prominence) Suture (thin line of bone parts union) Cortical Border 2024 01 01 02 03 03 Teeth Anatomy 04 05 06 3  10/24/2023 01 02 03 03 04 05 06 01 02 03 03 04 05 Thin RO layer of dense bone surrounding teeth 06 4  10/24/2023 Alveolar Crest Anterior vs Posterior 03 Pointed Flat 01 Alveolar Crest 02 03 03 04 Structure Mineral Density Enamel 90% RO (highest density) 05 Dentin 75% RO (less dense than E) Cementum 50% RO cant be differentiated from D (Thin and similar density of D) 06 Pulp 0% RL 5  10/24/2023 Maxillary Landmarks 03 The fact that: in 2D radiograph, the structures in the buccolingual dimension appears overlapping on each 03 other, so what you actually see is not only teeth, its all the bone structures and sometimes the soft tissue shadows Original Image 3D 2D 6  10/24/2023 Maxillary Incisors Maxillary Premolars Maxillary Canine Maxillary Molars 2024 01 02 02 03 03 Maxillary Incisors Radiograph Anatomy 04 05 06 7  10/24/2023 Maxillary Incisors 01 02 03 03 04 05 06 Maxillary Incisors 01 02 03 03 04 Nasal Cavity Anterior Nasal Spine Intermaxillary 05 Suture Incisive Foramen 06 Nasal Septum 8  10/24/2023 Maxillary Incisors RL RO 01 02 03 03 04 05 06 Maxillary Incisors RL RO 01 RO: Inf. Nasal Concha 02 03 RO: Nasal Septum RL: Nasal Cavity 03 RO: Ant. Nasal Spine RL: Incisive Fossa 04 Foramen RO: Shadow of the RL: Inter-Maxillary nose 05 Suture 06 9  10/24/2023 Maxillary Incisors RL RO 01 RL: Nasal Cavity RO: Nasal Septum RO: Nasal floor 02 03 RO: Ant. 03 Nasal Spine 04 RL: Inter-Maxillary Suture 05 RO: shadow of nose 06 01 03 02 03 03 Maxillary Canine Radiograph 04 Landmarkd 05 06 10  10/24/2023 Maxillary Canine 01 02 03 03 04 05 06 Maxillary Canine 01 02 03 03 04 Nasal Cavity 05 Maxillary 06 sinus 11  10/24/2023 Maxillary Canine 01 RL RL: Maxillary RO Sinus 02 03 RL: Nasal Cavity RO: Floor of 03 Maxillary Sinus 04 RO: Inverted Y of Innes RL: Lateral Fossa RO: Floor of Nasal Cavity 05 06 Maxillary Canine RL RO 01 RL: Maxillary Sinus 02 03 RO: Floor of Nasal RL: Nasal Cavity Cavity 03 RO: Inverted Y of 04 Innes RL: Lateral Fossa 05 RO: Floor of Maxillary Sinus 06 12  10/24/2023 Maxillary Canine 01 02 03 03 Nasolabial 04 Fold 05 06 Higher anteriorly & lower posteriorly 01 04 02 03 03 Maxillary Premolar Radiograph Landmarks 04 05 06 13  10/24/2023 01 02 03 03 04 05 06 Maxillary Premolar 01 02 03 03 Zygomatic Process of Maxilla 04 05 Maxillary sinus 06 14  10/24/2023 Maxillary Premolar 01 RL RO RO: Zygomatic 02 03 RL: Maxillary Process of maxilla Sinus 03 RO: Septa inside Max. sinus 04 05 RO: Floor of Maxillary Sinus 06 Maxillary Premolar 01 RL RO 02 03 RL: Maxillary Sinus RO: Septa inside 03 Max. sinus 04 05 RO: Floor of Maxillary Sinus 06 15  10/24/2023 Maxillary Premolar 01 RL RO 02 03 RL: Maxillary Sinus RO: Zygomatic 03 Process of maxilla 04 RO: Septa inside Max. sinus 05 RO: Floor of Maxillary Sinus 06 01 05 02 03 03 Maxillary Molar Radiograph 04 Landmarks 05 06 16  10/24/2023 Maxillary Molar 01 02 03 03 04 05 06 Maxillary Molar 01 Pterygoid 02 03 Plate 03 Maxillary 04 Tuberosity 05 Hamular Process Hamular Notch 06 17  10/24/2023 Maxillary Molar RL RO: Zygomatic RO 01 Process of Maxilla RO: Zygomatic Bone 02 03 RL: Maxillary Sinus RO: Pterygoid Plate 03 RO: Hamulus RO: Maxillary 04 Tuberosity 05 RO: Coronoid Process RL: Hamular Notch RO: Floor of 06 Maxillary Sinus Maxillary Molar RO: Zygomatic Process of Maxilla RL RO 01 RO: Zygomatic 02 03 RL: Maxillary Bone Sinus 03 RO: Pterygoid Plate 04 RO: Hamulus 05 RL: Hamular RO: Coronoid Notch Process 06 RO: Maxillary Tuberosity 18  10/24/2023 01 06 02 03 03 Maxillary Occlusal Radiograph 04 Landmarks 05 06 Maxillary Occlusal Topographic RO RL 01 RO: Zygomatic Process of maxilla 02 03 RL: Maxillary Sinus RO: Nasal 03 Septum RL: Nasolacrimal 04 Duct RO: Lateral RL: Nasal Cavity Nasal cavity 05 wall RO: Anterior 06 Nasal Spine 19  10/24/2023 Maxillary Lateral Occlusal RL RO 01 RO: Floor of Nasal 02 03 cavity RL: Nasal Cavity RO: Floor of 03 Maxillary Sinus 04 RL: Maxillary Sinus RO: Zygomatic 05 Process of maxilla 06 RO: Zygoma Misinterpretation 03 20  10/24/2023 Landmark Misinterpretation How To Differentiate? Nasal Fossa 1. Knowledge about the normal anatomic landmarks Pathological 2. Signs and symptoms lesion (e.g. Incisive 3. Lamina dura tracing Foramen Lateral Fossa 4. Follow up radiographs for size 5. Teeth Vitality 03 Maxillary Sinus Cyst) 6. Aspiration ?? 7. Shift techniques ??? Intermaxillary Fracture 1. Knowledge about the Normal anatomy suture 2. Uniformity and regularity of the line Line 3. History 03 21  10/24/2023 03 4 3 2 03 5 1 6 22  10/24/2023 03 4 1 03 5 2 3 23  10/24/2023 4 03 1 5 2 6 7 3 03 https://www.goconqr.com/en/flashcard/1631107 7/dental-radiography-landmarks 24  10/24/2023 References Eric whites, Nicholas Drage: Essentials of dental radiography. 5th Edition. Elsevier, 2014 01 Joen M. Iannucci, Laura Jansen Howerton, dental radiography principals and techniques 02 Crédits : Ce modèle de présentation a été créé par 03 Slidesgo, comprenant des icônes de Flaticon, des infographies et des images de Freepik 04 01 0203 03 04 05 06 25