Le3.Hist Exam & Diagnoses Flashcards

(11 cards)

1
Q

During a radiographic examination a panoramic radiograph does not provide sufficient data for a comprehensive fixed prosth tx plan, what else is required?

A

A full periapical series is required!

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2
Q

Why must irreversible hydrocolloid (alginate) impressions be poured immediately? What is the time impressions must be poured in?

A

B/c of imbibition, water absorption, and syneresis, water loss, which both result in impression distortion. 15 minutes.

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3
Q

Small non-adjustable articulators are incapable of fully replicating the range of motion of the mandible, what discrepancy does this often lead to?

A

Restorations with occlusal discrepancies –> Generally premature tooth contacts. Note: Must be adjusted intraorally or can lead to neuromuscular problems

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4
Q

For most routine fixed prostheses cases what type of articulator is used?

A

Semiadjustable articulator

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5
Q

What are our condylar inclinations & Bennet side shift angles, on our semiadjustable articulators, set at in preclinic?

A

Condylar inclination = 30 degrees

Bennet angle = 15 degrees

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6
Q

What instrument is used to record the anteroposterior and mediolateral spatial position of the maxillary occlusal surfaces in relation to the transverse opening and closing axis of the patient’s mandible?

A

Facebow

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7
Q

Why would a kinematic facebow be used over an arbitrary facebow?

A

Kinematic facebows are more accurate and are used during extensive prosthodontic therapy

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8
Q

What 2 instances should CR be used over MI during the facebow transfer process?

A

CR is used only if (1) pt can’t produce a repeatable bite or (2) you’re going to change the VDO. Otherwise, use MI

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9
Q

Define centric relation?

A

The Maxillomandibular position in which the condyles articulate with the thinnest avascular portion of their respective disks w/ the condyle-disk complex in the anterosuperior position against the articular eminences

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10
Q

What is the Prosthodontic Diagnostic Index (PDI) used for?

A

Helps determine appropriate tx plan for partially edentulous & completely dentate pts. Developed by the ACP and also used to determine cost and insurance reimbursement rates.

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11
Q

If there are a number of different problems, how is the final PDI classification determined?

A

Most advanced (compromising) finding determines final classification.

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