Cephalometric Analysis Questions with Detailed Verified Answers

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Cephalometric Analysis Questions with
Detailed Verified Answers

Question: What is the goal of cephalometrics

Ans ✅ ✅: to relate the 5 major components of the face:

1) Cranuim/Cranial base

2) Skeletal Maxilla

3) Skeletal Mandible

4) Maxillary Dentition and alveolar processes

5) Mandibular Dentition and alveolar processes

Question: Historical perspective of cephalometrics

Ans ✅ ✅: To study *longitudinal* facial growth patterns in the craniofacial complex

Question: Reference plane for cephalometric analysis is ________plane
for orientation and superimposition

Ans ✅ ✅: FH (Frankfort Horizontal)

-Upper ridge of the external auditory meatus to the most inferior portion of the orbit
should be parallel to the floor

Question: anatomical landmarks

Ans ✅ ✅: Readily recognizable points on a cephalometric radiograph or tracing,
representing certain hard or soft tissue anatomical structures

Question: constructed landmarks

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Ans ✅ ✅: Readily recognizable points on a cephalometric radiograph or tracing,
representing intersections of lines

Question: Angular measurements is determined at the intersection of...

Ans ✅ ✅: two lines

Question: Linear measurements are determined by the deviation of a....

Ans ✅ ✅: point from a line

Question: Name this anatomical landmark:
The most superior point of the outline of the external auditory meatus

Ans ✅ ✅: Pourion (Po)

-When the anatomic porion cannot be located reliably, the superior-most point of the
image of the ear rods ("machine porion") sometimes is used instead

Question: Is the porion...
a) midsagittal
b) unilateral
c) bilateral

Ans ✅ ✅: c) bilateral

Question: What is located at almost the same level as the mandibular
condyle

Ans ✅ ✅: External auditory meatus (EAM)

Question: The external auditory meatus is almost __________ in shape

Ans ✅ ✅: elliptical

Question: The EAM lies almost at the same vertical plane as the ....

Ans ✅ ✅: basion and odontoid process of the vertebra

Question: the internal auditory meatus is ______ in shape

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Ans ✅ ✅: round

Question: Describe the location of the internal auditory meatus

Ans ✅ ✅: posterior and superior to the external auditory meatus

Question: Name this anatomical landmark:
The geometric center of the pituitary fossa

Ans ✅ ✅: Sella turcica (S)

Question: determined by inspection, the Sella is a constructed point in
the ___________ plane

Ans ✅ ✅: midsagittal

Question: Name this anatomical landmark:
The intersection of the internasal and frontonasal sutures

Ans ✅ ✅: Nasion (N, Na)

Question: The nasion is a __________ landmark
a) unilateral
b) midsagittal
c) bilateral

Ans ✅ ✅: b) midsagittal

Question: Name this anatomical landmark:
The lowest point on the inferior orbital margin

Ans ✅ ✅: Orbitale (Or)

Question: The orbitale is a ________ landmark
a) unilateral
b) midsagittal
c) bilateral

Ans ✅ ✅: c) bilateral

Question: Name this anatomical landmark:
inferior margin of the piriform aperture, in the midsagittal plane