Maxilla Anatomy PDF

The Maxilla Oral and Dental Sciences 2 GDC Learning Outcomes 1.1.5 Describe relevant and appropriate dental, oral, craniofacial and general anatomy and explain their application to patient management 3 Intended learning outcomes By the e...

The Maxilla Oral and Dental Sciences 2 GDC Learning Outcomes 1.1.5 Describe relevant and appropriate dental, oral, craniofacial and general anatomy and explain their application to patient management 3 Intended learning outcomes By the end of this session, you will be able to:  Describe the main features of the maxilla  List the main parts of the maxilla  List the articulations of the maxilla  Describe the processes and surfaces of the maxilla  Describe a cleft lip and palate and its implications. 4 Maxillae (paired)  The Maxilla (upper Jaw) is made up of two maxillary bones joined together Image TMD Occlusion Tools Feb 2021 5 Maxilla Makes up:  Greater part of upper facial skeleton  Helps form the face, infratemporal region, orbital floor, lateral wall of nasal cavity, and roof of oral cavity Image Lecturio Website Feb 2021 6 Articulations of the Maxilla Articulations of the Maxilla (frontal & base view) B E E Opposite maxilla (side by side) A D  A – Nasal Bone C C  B- Frontal bone  C – Zygomatic bone  D – Vomer  E – Palatine bone Image ENT360 Website Feb 2021 Image ENT360 Website Feb 2021 8 Maxilla articulations Internal articulations:  Lacrimal bone  Ethmoid bone Image Google Feb 2021  Inferior concha Image Getbodysmart Feb 2021 9 Maxilla articulations Articulation with mandible  Maxillary teeth articulate with the teeth of the mandible through the Temporomandibular joint Image Purpose games Tools Feb 2021 10 Maxillary Processes and Surfaces Maxillary Processes Features:  4 Processes  4 Surfaces  Foramina Image Anatomy Standard Feb 2021 12 Maxillary Processes Alveolar Process  Forms the sockets and supporting bone for the maxillary teeth  The alveolar processes of both maxillae form the upper dental arch  Why is this relevant to dental professionals? Refer to bone lecture Image Wikipedia Feb 2021 13 Alveolar Process of Maxilla Image Google Feb 2021 14 Alveolar process of Maxilla Image Anatomy Standard Website Feb 2021 15 Zygomatic process of maxilla Zygomatic process (ZP) ZP ZP  Is on the lateral aspect and is the buttressing contribution to the zygomatic arch  Articulates with the zygoma Image Anatomy Standard Website Feb 2021 16 Frontal process of Maxilla (FP)  A bar of bone that projects upward from the anterosuperior aspect to contact the frontal bone  Articulates with the frontal bone, nasal bone & lacrimal bone Image Anatomy Standard Website Feb 2021 17 Palatine process of Maxilla  A horizontal shelf projecting from the medial aspect the maxilla towards the midline and its opposite counterpart  Forms the roof of oral cavity and floor of the nasal cavity Image Anatomy Standard Website Feb 2021 18 Features of the maxillary bones 1 1 Facial view  1 - Frontal process 2 2 3 3  2 - Infra-orbital foramen 4 4  3 - Zygomatic process 5 5  4 - Anterior nasal spine  5 - Canine eminence Image Anatomy Standard Website Feb 2021 19 Features of the maxillary bones  1 - Frontal process Lateral view 1  2 - Infra-orbital foramen 5  3 – Anterior nasal spine 6  4 – Alveolar margin 2 7 3  5 – Orbital surface 4  6 – Zygomatic process  7 – Maxillary bone 20 Features of the maxillary bones Palatal (inferior) view  Incisive foramen (fossa)  Palatine process Image Anatomy Standard Website Feb 2021 21 Features of the 1 maxillary bones Medial view: 2  Frontal process (1)  Maxillary sinus (2) 4 3  Palatine process (3)  Alveolar process (4) Image Anatomy Standard Website Feb 2021 22 Maxillary surfaces Orbital surface Orbital Surface  Forms the floor of the orbit Image Anatomy Standard Feb 2021 23 Features of the maxillary bones Maxillary sinus  Large air space – one in each maxillary bone  Extends anteriorly to the facial surface, laterally to the zygomatic process, posteriorly to the infratemporal wall & inferiorly down to the alveolar process  Closely related to the roots of the maxillary molars Image Amboss Website Feb 2021 *Please refer to Paranasal sinuses lecture* 24 Image Dental Protection Feb 2021 Image Quora accessed March 2021 25 Surfaces of Maxilla Facial, nasal, orbital, infratemporal Maxillary surfaces Facial (anterior surface) - helps form the upper face Image Anatomy Standard Website Feb 2021 Image TMD Occlusion Tools Feb 2021 27 Maxillary surfaces Maxillary Nasal Sinus  (medial) surface - forms the bulk of the lateral wall of the nasal cavity Image Anatomy Standard Website Feb 2021 28 Maxillary surfaces Orbital surface  Forms the floor of the orbit Image Anatomy Standard Feb 2021 29 Maxillary surfaces Infratemporal (posterior surface) Forms the wall of the infratemporal region Image Anatomy Standard Feb 2021 30 Abnormalities of the Maxilla Cleft Palate  Occurs during development of the palate.  The 2 halves of the palate do not fuse properly.  May be associated with a cleft lip.  A cleft lip and palate is the most common facial birth defect in the UK, affecting around 1 in every 700 babies.  Modern surgery produces excellent aesthetic and functional results.  A cleft lip is surgically revised in the Image NHS Website Feb 2021 first few months of life. 32 Cleft Lip  A cleft lip may just affect one side of the lip or there may be 2 clefts.  It can range from a small notch to a wide gap that reaches the nose. Image Google Feb 2021 33 Cleft Palate  A cleft palate may just be an opening at the back of the mouth, or it may be a split in the palate that runs all the way to the front of the mouth.  Sometimes it can be hidden by the lining of the roof of the mouth (the mucosa). Image Google Feb 2021 34 Difficulties with Cleft Palate (to be discussed in greater detail in Year 2) Difficulty feeding Hearing Problems Dental Problems Speech problems 35 Phoebe 36 37 38 39 40 Useful links Maxilla Bone Location and Function Anatomy Lecture for Medical Students Learning – YouTube CLAPA www.clapa.com CLEFT www.cleft.org.uk SMILE TRAIN www.smiletrain.co.uk 41 42 Thank you for listening Please email me if needed: [email protected]