Triadan Numbering System Flashcards

1
Q

The Triadan Numbering system uses 3 numbers. What is the purpose of each number?

A

1st identifies the quadrant of the mouth

2nd & 3rd identify the tooth

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2
Q

How are the quadrants identified?

A
1xx = right maxillary 
2xx = left maxillary
3xx = left mandibular
4xx = right mandibular
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3
Q

Where does numbering of the teeth begin?

A

Front of the mouth

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4
Q

What rule is used for species that have fewer teeth?

A

Rule of 4 and 9

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5
Q

What does the rule of 4 and 9 state?

A

the canine tooth is always 04 and the first molar is always 09

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6
Q

How are deciduous teeth identified?

A
5 = right maxillary (upper)
6 = left maxillary (upper)
7 = left mandibular (lower)
8 = right mandibular (lower)
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7
Q

What is the primary advantage of the Triadan numbering system?

A

It can be used with nonalphanumeric computers

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8
Q

What is another advantage of the Triadan Numbering System?

A

The numbering system is convenient

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9
Q

What are disadvantages of the Triadan Numbering System?

A

Not intuitive

The technician must know the code to understand which tooth is being identified

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