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Questions and Answers
What is the typical eruption sequence for mandibular canines in relation to maxillary canines?
What notable feature differentiates the labial surface of a mandibular canine from a maxillary canine?
Which anatomical feature is commonly pronounced in a mandibular canine compared to a maxillary canine?
During what developmental stage do maxillary canines typically erupt?
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How does the root of a mandibular canine typically compare to that of a maxillary canine?
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What is true about the cervical line of a mandibular canine?
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What aspect of mandibular canines is less developed compared to maxillary canines?
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In terms of dental alignment, what can occur during the Ugly Duckling Stage?
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What feature distinguishes the mesial cusp slope of the maxillary permanent canine from the distal cusp slope?
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Which aspect of the maxillary permanent canine exhibits a well-developed labial ridge?
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What characteristic feature is typically observed in the root of a maxillary permanent canine?
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In the lingual aspect of the maxillary permanent canine, where is the cingulum located?
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Which of the following best describes the common variations in tooth morphology for maxillary canines?
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What is a common clinical consideration for maxillary canines during eruption?
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What characteristic is true about the distal outline of the maxillary permanent canine?
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Which part of the maxillary permanent canine tends to exhibit deeper depressions?
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Study Notes
Maxillary Canine Eruption
- Maxillary canines erupt after the maxillary incisors and possibly after the premolars
- When the arch space has closed, permanent maxillary canines can become impacted
- The maxillary canines may erupt labially or lingually in relation to the surrounding teeth
- The maxillary canines may also fail to erupt fully and may remain impacted
Ugly Duckling Stage
- Occurs between 9-11 years old
- Transitional mal-alignment of anterior teeth corrected by eruption of canines
Maxillary Permanent Canine
- Crown: Smooth, convex with shallow depressions mesially and distally. Labial ridge extends from the cusp tip to the cervix. Mesial cusp slope is shorter than the distal cusp slope. Distal outline is slightly concave, while mesial outline is convex.
- Root: One cone-shaped and smooth root. Labially, the root is slender compared to the crown. The apex is blunt, and the apical third may show a sharp curve distally.
- Lingual aspect: Crown and root converge lingually. Cingulum is large and situated in the cervical 1/3. It may be exhibited as a pointed cusp. A well-developed lingual ridge is sometimes seen, confluent with the cusp tip. Mesial and distal lingual fossae may be present.
- Proximal surfaces: The root is broad for 2/3 of its length, tapering at the apical 1/3. Deep depressions on the mesial and distal surfaces of the root; the distal is more prominent. The cervical lines curve toward the cusp, more on the mesial.
Mandibular Permanent Canine
- Resembles a maxillary canine, but is narrower (labiolingually and mesiodistally)
- It might have two roots and two root canals
- The lingual surface of the crown of the mandibular canines is smoother than the maxillary canines, with a less developed cingulum and two marginal ridges.
- The mesial cusp slope is shorter than the distal cusp slope
- The mesial outline is slightly convex
- The distal outline is slightly concave from cervix to the contact area
- The middle lobe is well-developed (labial ridge) with two depressions on either side of the ridge
- Cusp tip is centered over the root
- Crown and root converge lingually
- A prominent lingual ridge with two fossae on either side of the ridge
- Pronounced cingulum and marginal ridges
- The cervical lines curve toward the incisal
- Deep depression in the root surface
- The contact area is at the junction of the incisal 1/3
Mandibular Canine Eruption
- Typically erupts before maxillary canines
- Usually erupts after most incisors have erupted
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Description
Explore the intricacies of maxillary canine eruption, including the timing and potential complications such as impaction. Understand the 'Ugly Duckling Stage' and its significance in dental development. This quiz covers essential characteristics of maxillary permanent canines and their anatomical features.
