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17 Cards in this Set
- Front
- Back
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Function
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Hybrid Ant/Post mastication fxn
Aesthetic Face and lip support Canine guidance |
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Developmental lobes
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3(F) + 1(L) ➝ 4 total
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Schedule
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Cal.start ➝ 1/3 yr
Cal.done ➝ 6 yr Eruption ➝ 9 yr Root.done ➝ 12 yr |
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Anomalies
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2 roots
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Crown shape
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(F/L): Tall pentagon (IC > MD)
(M/D): Triangular wedge |
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Root shape
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Cervical ➝ conical
Apical ➝ ovoid Root tip ➝ blunt, rare mesial deflection |
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CEJ Curvature
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(F/L) convex toward apex
(M/D) convex toward incisal |
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Long axis
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Axis before (facial) incisal edge
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HOC
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(M) at I⅓ *higher
(D) at I⅓ *lower (F) at C⅓ (L) at C⅓ *Cingulum! |
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Contact
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(M) at I⅓ just below MI angle
(D) at jxn of M⅓ and C⅓ |
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(F) View
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(M) Crown outline straight, flush with root
(D) Crown outline rounded MI slope shorter and less steep vs DI slope longer and steeper Labial ridge with depressions on either side Centered, obtusely-pointy cusp tip |
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(L) View
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Slight, distal cingulum
Slight (M)(D)(L) ridges and (M)(D) fossae |
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(Prox) View
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(F) 'C'
(L) Slight 'S' |
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(I) View
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Tall diamond (FL > MD)
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Unique Characteristics
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1. Longest Crown of ALL
2. (M) crown outline straight flush with root outline |
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Left vs Right
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1. (M) incisal ridge shorter than (D)
2. (M) crown outline striahgt and flush with root outline 3. (M) longer than (D).. |
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Vs. Maxillary Canine
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1. Erupts BEFORE premolars
2. Smaller 3. Longer crown but shorter root 4. Obtuse cusp angle 5. Cusp tip behind long axis 6. Distal cingulum 7. No canine eminence |
