OMFS Flashcards
S/s of advanced osteoarthritis of the temporomandibular joint (TMJ)
- Tendency toward prognathism
- Flattening of articular surface
- Crepitus
- Antegonial notching
** crepitus, flattening of the articular surface of the condyle, limited jaw movement, and pain on mouth opening.**
** TMJ arthritis CLD NOT cause apertognathia, which is the dental malocclusion where the posterior teeth occlude prematurely, resulting in an anterior open bite.***
Dry socket aka
(localized alveolar osteitis)
____________ is a painful condition that occurs two to three days following tooth extraction and is self-limiting in nature.
Dry socket aka (localized alveolar osteitis)
_______is the preferred method for visualizing the TMJ, followed by _______.
Magnetic resonance imaging (MRI)
cone-beam computed tomography.
T/F. No obvious TMJ pathology evident on their pantomograph ( PANO) is characteristic of TMJ
TRUE.
PANs are not useful when diagnosing TMJ pain/dysfunction disorders because only hard tissues are visible, so the relation of the condylar head to the mandibular fossa and articular tubercle are also often distorted.
Best flap for mesiodens removal
Full thickness flaps
within the palatal area allow for adequate visualization of the bone surrounding the mesiodens.
also provide better blood supply
T/F. Oxygen is not stored in its liquid state for use in dental practices, so the pressure gauge is accurate for the oxygen tank.
TRUE
most common result of habituated abuse of nitrous oxide?
Peripheral neuropathy
Long-term exposure can cause vitamin B12 deficiency, numbness, and reproductive side effects (in pregnant females).
only joint structure that exerts posterior traction on the articular disc?
Superior retrodiscal lamina
Superior retrodiscal lamina functions by pulling the articular discs posteriorly against the lateral pterygoid that pulls it forward.
connects the articular disc to the tympanic plate.
The ________ muscle inserts into the lower posterior portion of the mandibular ramus as well as the angle of the mandible and serves to help close the jaw.
medial pterygoid
During an unfavorable mandibular fracture, the medial pterygoid that inserts at the mandibular angle pulls in the same direction as the vector of displacement.
Elevators are single-blade instruments that are used to do ?
Engage the tooth apical to the cementoenamel junction
_____________ are related to muscular or motor reflexive functions including peristalsis, breathing, and heartbeat and are not involved in pain perception.
Autonomic nerves
nerve innervation of the temporomandibular joint (TMJ)
The masseteric nerve,
auriculotemporal nerve,
deep temporal nerve, and
mandibular division of trigeminal nerve have branches that innervate the TMJ.
Verrill sign
Ptosis of eyelid
Verrel sign can be used to eval level of sedation
Nitrous is :
- It is heavier than air.
- It alters cardiac output minimally.
- It is not significantly metabolized.
Nitrous oxide gas is used to provide anesthesia, anxiolysis, and vasodilation (for IV placement). It is stable and combustible but does not explode.
Nitrous oxide sedation is very safe and effective. Its effects in the body are immediately removed once the nitrous oxide gas is completely expired by the patient, making anesthetic recovery time faster.
**Beware of Diffusion Hypoxia _ dont just take NO2 and O2 off. Leave O2 on
Best incision to make when removing palatal tori
Double Y incision
______________nerves are both sensory and motor nerves that transmit nociceptive stimuli from the face.
The fifth and ninth cranial nerves
clinical signs commonly associated with acute suppurative osteomyelitis
Paresthesia or anesthesia of the inferior alveolar nerve
High or intermittent fever
Intense pain
affects children and is usually correlated with a Staphylococcus aureus infection.
A guerin fx is =
a lefort 1 fx = horizontal seperation of the maxilla form the nasal and zygomatic bones AND pterygoid plates.
A ____ fx is the most commonly seenin ER/OR?
Zygomatic - blow/fist to face
Dislocation of the mandible is best managed with:
restriction of mandibular movement for a period of 2 to 4 weeks. Opening should be limited and time for healing given
The jaw area with the LOWEST incidence of fractures is?
The coronoid process with an incidence rate of 1.3%. The regions most likely to be involved in fractures are
the condylar process [29.1%], angle [ 24.5% ] symphysis [ 22% ] body [ 16% ] alveolar [ 3.1%]
CASBA
For maxillary right quadrant extractions, the patient should turn their head substantially towards_____ and the occlusal plane of the maxilla should be at _______ to the floor.
the operator
60 degrees
For extraction of maxillary teeth, the practitioner should stand and raise the patient so that the height of the patient’s mouth approximates the height of the operator’s elbow.
For maxillary extractions, the occlusal plane should always be at 60 degrees to the floor.
when ext anterior teeth, the patient should ___ ____.
face forward
