Dental Anatomy Chapter 5 Quiz
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Questions and Answers

Which of the following characteristics is NOT associated with canines?

  • Dark yellow color
  • Longest tooth in the dental arch
  • Single cusp structure
  • Two cusps (correct)
  • What is the chronological order of the calcification stages for canines?

  • Beginning of calcification, enamel organ appearance, root completion
  • Enamel organ appearance, crown completion, eruption (correct)
  • Beginning of calcification, eruption, thickness of enamel
  • Crown completion, eruption, root completion
  • Which aspect of a maxillary canine is characterized by a cervical ridge?

  • Distal aspect
  • Mesial aspect
  • Labial aspect (correct)
  • Lingual aspect
  • Which statement regarding the lateral and central incisors is correct?

    <p>Lateral incisors have a smaller size than central incisors. (B)</p> Signup and view all the answers

    What unique feature distinguishes the labial aspect of the canine?

    <p>Convex outline with maximum convexity at the cervical ridge (D)</p> Signup and view all the answers

    What aspect of a lower canine is NOT typically recognized?

    <p>Occlusal aspect (B)</p> Signup and view all the answers

    Which of the following tooth characteristics is related to the maxillary canine?

    <p>Four lobes with three labial and one lingual (C)</p> Signup and view all the answers

    What is the significance of canine eminence?

    <p>Affects the esthetic appearance of the face (C)</p> Signup and view all the answers

    What is the main function of incisors?

    <p>Cutting and incision (A)</p> Signup and view all the answers

    Which of the following describes the chronological order for central incisors from enamel organ appearance to eruption?

    <p>5 m.i.u, 3-4 m, 4-5 y, 7-8 y (C)</p> Signup and view all the answers

    What shape is typically observed at the facial and lingual aspects of incisors?

    <p>Trapezoid, square, or rectangular (A)</p> Signup and view all the answers

    Where are the contact areas of incisors primarily located?

    <p>In the incisal third (B)</p> Signup and view all the answers

    What describes the shape of the upper canine's root?

    <p>Tapered from the cervical line to a blunt pointed apex. (B)</p> Signup and view all the answers

    What is a midline diastema?

    <p>An abnormal space between central incisors (B)</p> Signup and view all the answers

    How does the depression on the root surface of the lower canine compare to that of the upper canine?

    <p>The depression in the lower canine is deeper and may cause bifurcation. (C)</p> Signup and view all the answers

    Which pair of attributes describes the angles of incisors?

    <p>Sharp mesioincisal angle and rounded distoincisal angle (D)</p> Signup and view all the answers

    In which aspect is the tip of the cusp in canines typically displaced?

    <p>Labially and mesially. (A)</p> Signup and view all the answers

    What is characteristic of the labial surface of newly erupted incisors?

    <p>It is smooth and convex (B)</p> Signup and view all the answers

    What characteristic may be observed in the apical third of the canine root?

    <p>It may show mesial or distal curvature. (D)</p> Signup and view all the answers

    At what ages do the roots of central incisors typically complete?

    <p>10-11 years (D)</p> Signup and view all the answers

    What is a notable variation observed in the maxillary canine?

    <p>A cusp-like tubercle on the cingulum. (B)</p> Signup and view all the answers

    What is a key difference in size between the maxillary central and lateral incisors?

    <p>The central incisor is larger than the lateral incisor. (C)</p> Signup and view all the answers

    Which of the following describes the mesio-incisal angle of the maxillary lateral incisor?

    <p>Round and rounded (D)</p> Signup and view all the answers

    How does the lingual fossa of the maxillary lateral incisor compare to that of the maxillary central incisor?

    <p>The lingual fossa of the lateral incisor is smoother and shallower. (B)</p> Signup and view all the answers

    What is unique about the cingulum of the maxillary lateral incisor compared to the central incisor?

    <p>The cingulum of the lateral incisor is tilted distally while the central is centered. (B)</p> Signup and view all the answers

    What is a primary distinguishing feature of maxillary incisors as compared to mandibular incisors?

    <p>Maxillary incisors are wider mesiodistally. (A)</p> Signup and view all the answers

    How does the incisal edge of the maxillary central incisor align compared to the mandibular incisor?

    <p>It is at one line with the long axis of the root. (A)</p> Signup and view all the answers

    What feature is often absent in both maxillary central and lateral incisors in a small percentage of individuals?

    <p>Lingual pit (C)</p> Signup and view all the answers

    Which incisor type is likely to exhibit a peg shape variant?

    <p>Maxillary lateral incisor (C)</p> Signup and view all the answers

    How does the buccal cusp tip of the tooth positioned at the same level but more occlusally compare to the one at the same level?

    <p>It is located at the center of the crown. (B)</p> Signup and view all the answers

    What characteristic differentiates the mesial slopes of the cusp between the two tooth positions?

    <p>Both slopes are equal in length. (A)</p> Signup and view all the answers

    Which feature is associated with the crown that is tilted severely to the lingual?

    <p>It has one very short, non-functioning cusp. (A)</p> Signup and view all the answers

    In terms of width, how does the more occlusally positioned tooth compare to the tooth at the same level?

    <p>It is less converging and wider. (A)</p> Signup and view all the answers

    How do the characteristics of the central pit differ between the two tooth positions?

    <p>The central pit is present in the more occlusally positioned tooth. (B)</p> Signup and view all the answers

    What shape does the occlusal aspect of the upper 2nd premolar resemble?

    <p>Oval (D)</p> Signup and view all the answers

    How do the buccal cusps of the upper 1st and 2nd premolars compare in size?

    <p>The 1st is larger and sharper (D)</p> Signup and view all the answers

    Which statement accurately describes the mesial marginal groove of the upper 1st premolar?

    <p>It is present (A)</p> Signup and view all the answers

    What characterizes the roots of the upper 1st premolar compared to the upper 2nd premolar?

    <p>The 1st has two roots (D)</p> Signup and view all the answers

    Which groove is typically longer in the upper 1st premolar compared to the upper 2nd premolar?

    <p>Central groove (B)</p> Signup and view all the answers

    In terms of cusp tips, how do the upper 1st and 2nd premolars differ?

    <p>Cusp tips are closer together in 1st premolar (B)</p> Signup and view all the answers

    Which feature differentiates the lingual cusp of the upper 2nd premolar from that of the upper 1st premolar?

    <p>It is less than buccal by 1mm (D)</p> Signup and view all the answers

    What does the presence of supplemental grooves indicate about the upper 2nd premolar compared to the upper 1st premolar?

    <p>More supplemental grooves (D)</p> Signup and view all the answers

    Flashcards

    Maxillary Incisors

    Upper front teeth.

    Mandibular Incisors

    Lower front teeth.

    Lateral Incisor

    The incisor tooth beside the central incisor.

    Central Incisor

    The middle incisor tooth.

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    Canine Tooth

    Fang-shaped tooth used for tearing food.

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    Canine Crown

    The visible part of a canine tooth; single cusp.

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    Canine Tooth Function

    Tearing food, part of chewing, helps to look nice.

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    Dental Arch

    The arrangement of teeth in either the upper or lower jaw.

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    Incisor Tooth Types

    Incisors are the front teeth designed for cutting and biting food.

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    Incisor Number

    There are four maxillary incisors and four mandibular incisors.

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    Midline Diastema

    Abnormal space between the two central incisors

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    Incisor Crown Shape

    Incisor crowns have trapezoid, square, or rectangular outlines, with the smallest uneven side near the gum line.

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    Incisor Crown Aspect

    Each tooth has five aspects: Facial, Lingual, Mesial, Distal, and Incisal.

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    Incisor Contact Areas

    Contact areas are found in the incisal third of the tooth, near the mesioincisal and distoincisal angles.

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    Incisor Facial Surface

    The front surface of the incisor is smooth and slightly rounded, with a peak near the gum line.

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    Incisor Root Development

    Incisor root development takes several years, completing around 10-11 years of age.

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    Maxillary Lateral Incisor

    A tooth that supplements the central incisor in function, resembling it in most aspects but smaller and rounded.

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    Central vs. Lateral Incisors (Size)

    Maxillary central incisors are larger than lateral incisors.

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    Incisal Angle (Central vs Lateral)

    Maxillary central incisors have a sharper mesio-incisal angle (90 degrees), while lateral incisors have a rounder one.

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    Lingual Fossa (Central vs Lateral)

    Maxillary central incisors have a smooth and shallow lingual fossa, while lateral incisors have a smaller, deeper one.

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    Maxillary vs. Mandibular Incisors (Crown)

    Maxillary incisors are wider mesiodistally (front-to-back) compared to mandibular incisors, which are wider faciolingually (front-to-back).

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    Maxillary vs. Mandibular Incisors (Marginal Ridges)

    Maxillary incisors have well-developed marginal ridges, while mandibular incisors have less developed ridges.

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    Maxillary Development vs. Mandibular Development.

    Maxillary incisors have better developed elevations/outlines than mandibular incisors.

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    Incisor Contact Points

    Mesial contact at the junction of the incisal and middle third, distal contact at the center of the middle third.

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    Upper Canine Root Shape

    The upper canine root tapers from the neck to a blunt point. Its end may curve slightly towards the lip.

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    Lower Canine Root Shape

    The lower canine root's outline is mostly straight until the root's third, then tapers to a more pointed end.

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    Root Surface Depressions

    The root surface has longitudinal grooves, usually deeper distally than mesially, and varying in depth between upper and lower canines.

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    Canine Root Bifurcation

    Lower canines sometimes have a split root near the tip, a phenomenon that may extend to the neck.

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    Maxillary Canine Variations

    Maxillary (upper) canines may have a small bump on the lingual surface (cingulum) and/or lingual pits, and can vary in the length of their roots.

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    Mandibular Lateral Incisor

    The lateral incisor located in the lower jaw, positioned next to the central incisor. The distal ridge is more prominent than the mesial ridge.

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    Maxillary Lateral Incisor Crown Shape

    The crown is tilted heavily towards the tongue (lingual) side, resulting in a more diamond-shaped outline.

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    Mandibular Lateral Incisor Crown Shape

    The crown leans less lingually compared to the maxillary lateral incisor, Its outline is typically round or square.

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    Maxillary Lateral Incisor Pulp Cavity

    It lacks a central pit, a characteristic that helps differentiate it from a mandibular lateral incisor.

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    Maxillary 1st Premolar Buccal Ridge

    The buccal ridge of the maxillary first premolar is prominent and well-defined.

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    Maxillary 2nd Premolar Buccal Ridge

    The buccal ridge of the maxillary second premolar is less prominent than the first.

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    Maxillary 1st Premolar Buccal Cusp

    The buccal cusp of the maxillary first premolar is large and sharp, used for tearing.

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    Maxillary 2nd Premolar Buccal Cusp

    The buccal cusp of the maxillary second premolar is smaller and blunt.

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    Maxillary 1st Premolar Mesial Slope

    The mesial slope of the maxillary first premolar is longer than the distal slope.

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    Maxillary 2nd Premolar Mesial Slope

    The mesial slope of the maxillary second premolar is shorter than the distal slope.

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    Maxillary 1st Premolar Crown

    The maxillary first premolar crown tapers towards the cervix.

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    Maxillary 2nd Premolar Crown

    The maxillary second premolar crown is broad at the cervix.

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    Study Notes

    Images and Captions

    • Images of Niagara Falls, overloaded trucks, camel warning sign, a wall with square openings, a car overloaded, a building under construction, and diagrams of teeth. Various images of various subjects, from a taxi and some people to teeth from different angles and perspectives

    Teeth Anatomy

    • There are four maxillary and four mandibular premolars
    • Premolars have 4 lobes
    • Mandibular second premolars have 2 or 3 cusps
    • The first premolar has 5 aspects: buccal, lingual, mesial, distal, and occlusal
    • Canines have 5 aspects: labial, lingual, mesial, distal, and incisal
    • The maxilla lateral incisor supplements the central incisor in function and resembles it in all aspects but is smaller and rounded.
    • Central incisors are the biggest and widest of all the incisors
    • An abnormal space between the two central incisors is called a midline diastema

    Tooth Chronology

    • Enamel organ appearance (5 months in the incisors
    • Beginning of calcification (3–4 months in the incisors)
    • Crown completion (4–5 years in the incisors)
    • Eruption (7-8 years in the incisors)
    • Root completion (10–11 years in the incisors)
    • Enamel organ appearance (6–8 months in the canines)
    • Beginning of calcification (4–5 months in the canines)
    • Crown completion (6–7 years in the canines)
    • Eruption (9–10/11–12 years in the canines)
    • Root completion (12–14/14–15 years in the canines)
    • Enamel organ appearance (7 months in the premolars)
    • Beginning of calcification (1.5–2 years in the premolars)
    • Crown completion (5–6 years in the premolars)
    • Eruption (10–11 years in the premolars)
    • Root Completion (12–13 years in the premolars)

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    Description

    Test your knowledge on dental anatomy with this quiz focused on canines and incisors. Answer questions related to their characteristics, developmental stages, and unique features. Perfect for students studying dentistry or dental hygiene.

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