occlusion and TMD Flashcards
what are Temporomandibular disorder a subgroup of
Orofacial pain disorders
Types of TMD
Myogenous TMD (muscles) Arthrogenous TMD (Joint/bone/cartilage)
where are the blood vessels of the TMJ
behind the Condyle
where is the Postglenoid process
above the bloodvessels behind the joint disk
what is the basis of accurate diagnosis
Good history taking
what is taken during history taking of disease
take the patient’s word and look at the root causes
Cardinal criteria(Red flags) to be considered for diagnosis
Pain Limitation of function Limitation of movement Physical changes Altered jaw relationshsips Temporomandibular sounds that have been increasing in intensity and frequency
what leads to TMD symptoms
Normal function+ event leads to physiologic tolerance that leads to TMD symptoms
what are the etiologic factors of TMD
Predisposing Factors
Initiating factors
Perpetuating factors
what are factors that increase the risk for TMD
Predisposing factors
what are factors that cause TMD
Initiating factors
what are factors that enhance the progression of TMD
Perpetuating factors
what are some examples of predisposing factors of TMD
Systemic-arthritis
occlusion- interferences
loss of posterior teeth
what are some examples of Initiating factors for TMD
Trauma
Parafunctional habits-> nonfunctional habits
what are examples of Perpetuating factors of TMD
Behavioral, social, and emo stress
Factors associated with TMD
Occlusal condition Trauma Emotional stress Deep pain input Parafunctional activities
how is occlusion related to TMD
bringint teeth together into MI are reflected in meeth
once teeth in occlusion, problems in loading the masticatory strucures are reflected in the joints
How does Occlusion possibly lead to TMD
Introduction of an acute condition
PResence of orthopedic Instability
what is orthopedic stabilisht
when the stable MI posisiton of the teeth is in harmony with the musculoskeletally stable position of the condyles in their fossae
Functional activities of the Masticatory system
Chewing, eating, and swallowing
Diunrnal Parafunctional activity of the masticatory system
Clenching and grinding
Cheek and tongue biting
Finger and thumn sucking
Nocturnal parafunctional activity
Bruxing
Types of parafunctional activity
Diurnal and Nocturnal
how can you tell if someone is bruxing
Listen while they sleep
If hypersensitive
lots of wear on the teeth
How would Dentistry be the main provider of care for many TMDs
If Occlusal interferences create muscle symptoms
What should a Dentist do if occlusal interferences are not related to TMD symptoms
should not provide dental therapies
when to use prosthetic rehab for TMD
to stabilize the occlusal when patients have occlusal instability and recurrent symptoms
when should Prosthetic treatment in TMD be carried out
Only after reversible therapy has result in relief of pain and the normaliziation of function
