This document discusses middle third facial fractures, including their causes, characteristics, classifications, signs and symptoms, investigations, and radiographic evaluation. It covers fractures of the dentoalveolar region, zygomatic complex, orbital floor, nasal complex, and LeFort types I, II, and III. Key signs include ecchymosis, edema, step deformities, enophthalmos, diplopia, malocclusion, and nasal deformities. Investigations involve forced duction testing, imaging like occipitomental and submentovertex views to evaluate fracture patterns and displacement.
Odontogenic keratocyst (OKC) is the cyst arising from the cell rests of dental lamina. It can occur anywhere in the jaw, but commonly seen in the posterior part of the mandible. Radiographically, most OKCs are unilocular when presented at the periapex and can be mistaken for radicular or lateral periodontal cyst.
Odontogenic keratocyst (OKC) is the cyst arising from the cell rests of dental lamina. It can occur anywhere in the jaw, but commonly seen in the posterior part of the mandible. Radiographically, most OKCs are unilocular when presented at the periapex and can be mistaken for radicular or lateral periodontal cyst.
Area between a superior plane drawn through the FZ sutures tangential to the skull base and inferior plane at the level of maxillary occlusal surface
Triangular region with widest dimension facing anterior
Definition:
Middle third of the facial skeleton may be defined as that area bounded superiorly by a transverse line connecting the 2 zygomaticofrontal sutures & inferiorly by occlusal plane of the maxillary teeth, or alveolar ridge in edentulous patient.
Emergency Department presentation by Dr Conor Dalby. Signs and symptoms to be aware of when assessing a patient following facial injury. Common types of fractures and their management. UK.
Its a Clinical Presentation of Midface fractures-specifically, Lefort fractures. Classification, Anatomical Landmarks, Clinical Features, Diagnosis & Management protocols are discussed.
Maxillofacial Surgery
Dental Students Fifth Year First semester
Lecture Name maxillofacial trauma part 2
Al Azhar University Gaza Palestine
Dr. Lama El Banna
Dentist in pune.(BDS) MDS- OMFS - Dr. Amit T. Suryawanshi.. Mandibular fractu...All Good Things
Dentist in pune. (BDS. MDS) - Dr. Amit T. Suryawanshi. Seminar-Canine Impaction.
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A lecture for 5th stage dental students.
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Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
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Anti ulcer drugs and their Advance pharmacology ||
Anti-ulcer drugs are medications used to prevent and treat ulcers in the stomach and upper part of the small intestine (duodenal ulcers). These ulcers are often caused by an imbalance between stomach acid and the mucosal lining, which protects the stomach lining.
||Scope: Overview of various classes of anti-ulcer drugs, their mechanisms of action, indications, side effects, and clinical considerations.
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
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ASA GUIDELINE
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2 Case Reports of Gastric Ultrasound
6. Physical characteristics of midfacial skeleton
1.middle third consist from multiple bones
which is rarely fractured in isolation
2.this type of structures able to withstand
considerable force from below but early
fractured from other directions
3. it act as a cushion for trauma directed to the
cranium
7. Classification of mid face fractures
• Dentoalveolar fractures
• Zygomatic complex fracture
• Orbital floor fracture
• Nasal complex fracture
• Le Fort I
• Le Fort II
• Le Fort III
12. Classification of zygomatic complex fracture
I . Fracture of the body
a. Minimal or no displacement
b. Inward and downward displacement
c. Inward and posterior displacement
d. Outward displacement
e. Comminution
13.
14. II. Fracture of zygomatic arch
a. Minimal or no displacement
b. V-type fracture
c. comminuted
15. Signs and symptoms
I. Extra oral
Inspection
a. Circumorbital ecchymosis
b. Subconjunctival heamorrhage
c. Edema
d. Flattening zygoma region
e. Limitation of ocular movement
f. Diplopia
g. Strabismus
h. Enophthalmos
i. Limitation of mouth opening
j. Unilateral epistaxis
16.
17.
18. Palpation
a. Tenderness over the cheek bones
b. Tenderness and separartion at frontozygomatic
suture
c. Step at inferior orbital rim
d. Parasthesia of the cheek
19.
20. Intra oral examination
By inspection
a. Ecchymosis at the buccal vestibule in the region
of zygomatico-maxillary suture
b. Possible of occlusion gagging in molar region
By palpation
Tenderness
Anasthesia at the upper lip
27. Signs and symptoms
• Edema , COE , SCE , Emphysema
• Unilateral epistaxis
• Parasthesia within the
distribution of infra-orbital
nerve
• Limitation of eye movement
• Enophthalmus,diplopia,ptosis
• proptosis
40. • Clinical findings:
– Marked facial edema
– Nasal flattening
– Traumatic telecanthus
– Epistaxis or CSF
rhinorrhea
– Movement of the upper
jaw and the nose.
41. LeFort III
– Fractures through:
• Maxilla
• Zygoma
• Nasal bones
• Ethmoid bones
• Base of the skull
42. LeFort III
• Clinical findings:
– Dish faced deformity
– Epistaxis and CSF rhinorrhea
– Motion of the maxilla, nasal
bones and zygoma
– Severe airway obstruction