DHE 104 morph final review

  1. A line angle is formed by...?
    Three surfaces
  2. Which of the following teeth has a bifurcated root?
    mandibular right first permanent molar
  3. On anterior teeth the fourth lobe develops on the lingual surface and is called:
  4. Shallow grooves or lines that separate primary parts of the crown or root are called:
    Developmental grooves
  5. Teeth that develop with trifurcated roots include:
    maxillary molars
  6. If a tooth surface faces the lip or cheek it is called the labial/buccal surface.
  7. If the surface of a tooth faces the tongue it is called the lingual surface.
  8. Premolars usually have at least two cusps. There are four maxillary permanent premolars and four mandibular permanent premolars.
    The first statement is true the second statement is true.
  9. The surface of a tooth facing the cheek in the posterior area of the mouth is termed?
  10. Another name for the Baby teeth is deciduous or secondary teeth.
    • False
    • primary teeth not secondary
  11. In the (FDI) Federation Dentaire Internationale coding system each tooth deciduous or permanent is given a two-digit number.
  12. In dentistry the right and left quadrants are separated by the:
  13. The permanent teeth that replace or succeed the deciduous teeth are called succedaneous teeth. The permanent molars are called nonsuccedaneous teeth.
    The first sentence is True the second sentence is True.
  14. The Universal System uses the Arabic numerals 1 through 32 for primary teeth.
  15. The mandible is the bone that supports the lower arch of teeth hence the name mandibular arch.
  16. How many teeth are present in the mandibular permanent arch?
  17. If a child has a dentition with primary and permanent teeth this is called:
    Mixed dentition
  18. There are 8 quadrants in the permanent dentition.
    • False
    • 4
  19. How many teeth are present in the maxillary primary arch?
  20. The curved alignment of the occlusal plane is called:
    curve of Spee
  21. Each tooth begins to develop from four (4) or more growth centers. These centers grow out from the tooth germ and are known as developmental lobes.
    The first sentence is True the second sentence is True.
  22. The first teeth to appear in the mouth are usually the deciduous mandibular
  23. With premature loss of deciduous teeth, normal jaw growth and development may not take place.
  24. The Cusp of Carabelli can be found on the mesiolingual cusp of the:
    maxillary first molar
  25. The term edentulous indicates no teeth clinically present.
  26. The first teeth of the permanent dentition to emerge into the oral cavity are usually the maxillary first molars followed by the mandibular first molars within a few weeks.
    • The first statement is False the second statement is False.
    • Mandibular 1st molars
  27. The process of roots of primary teeth resorbing and dissolving is known as:
  28. Teeth that remain embedded in bone or soft tissue are said to be:
  29. The incisal ridges formed by the labial developmental lobes after eruption are called:
  30. The Oral CavityMatch the anatomical structures to their regions. (EX. Larynx-Tonsilliar region.)
    ___Median Sulcus
    __ Plicae fimbriatae
    ___ Pterygomandibular raphe
    ___ Circumvallate papillae
    ____ Alveolar mucosa
    ____ Rugae
    ____ Fauces
    ____ Lingual tonsils
    ____ Attached gingiva
    ____ Soft palate
    1. Tonsilliar region2. Palatal region3. Lingual region4. Gingival mucosa region
    __3__Median Sulcus

    __3__Plicae fimbriatae

    __1__Pterygomandibular raphe

    __3__Circumvallate papillae

    __4__Alveolar mucosa



    __3__Lingual tonsils

    __4__Attached gingiva

    __2__Soft palate

    1.Tonsilliar region

    2.Palatal region

    3.Lingual region

    4.Gingival mucosa region

    1. Tonsilliar region2. Palatal region3. Lingual region4. Gingival mucosa region
  31. The type of bone that lines the sockets in which the roots of teeth are held is called alveolar bone proper.
  32. Which of the following is NOT part of the attachment unit?
    • cementum
    • attached gingiva
    • periodontal ligament
    • alveolar bone
  33. The alveolar mucosa joins the attached gingiva at the mucogingival junction and is continuous with the rest of the tissues of the vestibule
  34. Cellular cementum is like bone in character and in the way in which it grows and resorbs. Like bone, cementum grows by the apposition of new layers one on top of another.
    First sentence is True second sentence is True.
  35. Masticatory mucosa is keratinized and can be found on the:
    hard palate
  36. When viewed radiographically the alveolar bone may be called:
    lamina dura
  37. Some of the forces that exert pressure on teeth include all of the following
    • mesial drift
    • active eruption
    • orthodontic corrective forces
    • occlusal forces
  38. The periodontal ligament is arranged in the following groups:
    horizontal, oblique, alveolar crest, apical,interradicular
  39. The gingival sulcus if healthy measures 2.5 millimeters and is located in the space between the attached gingiva and the tooth.
    • False
    • between a tooth and the surrounding gingival tissue (free gingiva)
  40. Healthy alveolar mucosa is usually red to bright red in color:
  41. An overextended dental restoration will promote healthy supporting gingival tissues.
    • False
    • compromise gingival health
  42. The pulp tissue of a tooth is encased by dentin and receives nutrients and blood thru the apical foramen found at the root apex.
  43. A common form of pain occurs when the ginigival tissues recede and the roots covered with exposed enamel elicit pain at the touch of cold or hot/spicy foods.
    • False
    • cementum is exposed
  44. The dentist and/or hygienist may check a patient's bite and restorations with articulating paper. If a tooth hits with slightly more contact than the rest of the teeth, the result is extreme trauma and discomfort to the patient
    First sentence is True second sentence is True.
  45. An open contact may lead to food impaction. This results in:
    gingival disease
    dental decay
    periodontal pockets
    Both A and B
    All of the above A,B, and C
    All of the above A,B, and C
  46. If a tooth is fractured and no longer occludes with its antagonist in the opposite arch the fractured tooth would begin to migrate to meets its antagonist within:
    1 day
  47. Tooth migration may lead to "tipping" and "mobility"
  48. The interrelationship of the dental structures may lead to trauma of the:
    TMJ and lateral pterygoid muscles
  49. Occlusal trauma may occur during eating if there are abnormal contours and inadequate spillways to deflect the food.
  50. Attrition may be defined as the normal wearing away of tooth structure from chewing and biting.
  51. The CEJ is the line that marks the junction of the enamel and the cementum. The CEJ is also referred to as the "cervical line".
    First sentence is true second sentence is true.
  52. Embrasures serve all of the following purposes
    • allow food to be deflected away from contact areas
    • dissipate and reduce the forces of occlusal trauma on the teeth
    • permit slight stimulation to gingival by frictional massage
  53. The pits and fissures of natural teeth may be worn away by eating a variety of raw foods only.
  54. A contact point is where the proximal surfaces of the teeth touch one another.
  55. Interproximal spaces are triangular-shaped spaces between the teeth formed by the bone on one side and the proximal surfaces and their contact area on the other.They are filled with:
    papillary gingival
  56. A contact area of a tooth is where the occlusal cusp of one tooth touches the occlusal portion of another tooth in the opposing arch.
    • False
    • The area on a tooth that touches an adjacent tooth at the mesial and distal.
  57. The terms "crest of curvature" and "height of contour" on anterior and and posterior teeth may be used interchangeably.
  58. As a general rule the curvature of the CEJ is usually about 1mm less on the distal surface of the tooth than on the mesial surface.
  59. The periodontium consists of:
    gingiva, bone cementum, periodontal ligament
  60. An open contact can cause all of the following
    • food impaction
    • tooth decay
    • gingival recession
    • overhanging restorations
  61. The process of shedding the deciduous teeth and replacement by the permanent teeth is called exfoliation.
  62. The first primary (deciduous) teeth to erupt in the oral cavity are the:
    Mandibular central incisors
  63. All of the following contribute to the importance of deciduous teeth
    • assist in the development of muscles of mastication
    • produce primate spaces for the permanent dentition
    • produce leeway spaces for succedaneous teeth to erupt
  64. Which of the following define differences between the primary and permanent dentition:
    Primary teeth are whiter in color than the permanent teeth.
    Dentin thickness between the pulp chambers and the enamel is thinner in the primary teeth than the permanent teeth.
    Roots of the primary posterior teeth tend to flare apically in comparison to the roots of the permanent posterior teeth.
    All of the above.
    All of the above.
  65. There are______teeth in the fully erupted deciduous dentition.
  66. Using the Universal System the following are succedaneous teeth:
    #3, #14, #19, #30
    (A), (J), (K), (T)
    #1, #16, #17, #32
    #8, #9, #24, #25
    (C), (H), (M), (R)
    #8, #9, #24, #25
  67. The resorption of the deciduous roots help guide the erupting permanent teeth into the proper location. The succedaneous teeth follow the resorbing root through the bone until the deciduous teeth exfoliate from a lack of root support.
    First sentence is True second sentence is True.
  68. Exfoliation begins 2 or 3 years after the deciduous root is completely formed.
  69. The phenomenon of "Mesial Drift" primarily effects the permanent teeth.
  70. Each quadrant of the deciduous dentition contains:
    Incisors, Canine, First & Second Primary Molars
  71. The first primary (deciduous) teeth to erupt in the oral cavity are the:
    Mandibular central incisors
  72. The resorption of the deciduous roots help guide the erupting permanent teeth into the proper location. The succedaneous teeth follow the resorbing root through the bone until the deciduous teeth exfoliate from a lack of root support.
    First sentence is True second sentence is True.
  73. When placing pit & fissure sealants the teeth most likely to benefit include:
    mandibular first and second molars
  74. The occlusal pattern of the mandibular second molar has:
    well defined cross pattern mesial/distal & facial/lingual
  75. The premolars with two roots include the:
    maxillary first premolars
  76. The occlusal patterns of the maxillary and mandibular third molars are not well defined (T/F)
  77. The maxillary first and second molars have prominent lingual grooves.(T/F)
  78. Buccal grooves can be found on the mandibular first and second molars.(T/F)
  79. Which of the following is more likely to be present on maxillary first molars?
    cusp of Carabelli
  80. Which is the most acute incisal angle on the maxillary central incisor?
  81. A more prominent cingulum is found on which tooth?
    maxillary central
  82. Canine teeth exhibit:
    • mesial marginal ridge
    • lingual ridge
    • Facial ridge
  83. The primary functions of the roots of the teeth are to:
    • support the tooth to the bone thru the PDL
    • provide a sensory system to the tooth
    • house the pulpal tissue/nourishment system of the tooth
  84. Area-specific curets have only one working cutting edge per working end that is used for periodontal debridement(T/F)
  85. The rigid gracey curets 15/16 and 17/18 were designed to provide superior access to the proximal surfaces of anterior teeth. (T/F)
    • FALSE
    • Posterior teeth
  86. The 9/10 gracey curet is best suited for anterior and posterior facial surfaces only. (T/F)
    • FALSE
    • posterior teeth, facial and lingual.
  87. he 13/14 gracey curet is best suited for posterior teeth distal surfaces only.(T/F)
  88. The working end of a periodontal file has the following design characteristics:
    • the back is round to permit subgingival use
    • working end has a series of cutting edges
    • shank is rigid and transmits limited tactile sensitivity
    • base may be round, rectangular, or oblong
  89. Files are primarily used to roughen the surface of burnished calculus deposits to facilitate the removal with a curet.(T/F)
  90. The Hirschfeld files may be applied to posterior teeth. The 3/7 file is used for  mesial and distal proximal surfaces and the 5/11 file is used for facial/lingual surfaces.
    • First sentence is true second sentence is false.
    • 3/7 file facial and lingual
    • 5/11 file proximal surfaces
  91. Mandibular canines have deeper longitudinal grooves on their distal than their mesial roots. Mandibular canines sometimes have bifurcated apical root tips.
    First sentence is true second sentence is true.
  92. Maxillary molars usually have three root canals-a mesiobuccal, distobuccal, and  lingual canal. (T/F)
  93. Anomalies resulting in a variation in the number of teeth is called hyperdontia for multiple or extra teeth and anodontia for too few teeth. (T/F)
  94. Enamel Pearls may be found on all of the following
    • CEJ
    • Bifurcation root area
    • Trifurcation root area
  95. If a condition occurs because of an individual's genetic makeup, the condition is termed hereditary. If the condition occurs at or before birth it is termed congenital and may be the result of hereditary.
    First sentence is True second sentence is True.
  96. Hutchinson's incisors are notched incisors and are a result of:
    Congenital syphilis
  97. A tooth that has a sharp bend or curve in the root or the crown is called:
  98. A condition in which the roots of the teeth are extremely short in comparison with the clinical crowns is termed:
    Dwarfed roots
  99. An anomaly that arises when a tooth attempts to divide itself or partially twin itself by splitting its tooth germ is called:
  100. Excessive cementum formation around the apical third of a root after a tooth has erupted is termed:
  101. A supernumerary tooth situated buccally or lingually to a molar is called a paramolar. (T/F)
  102. Supernumerary teeth are most commonly located in the midline and molar regions of the maxillae:(T/F)
  103. If the anterior teeth do not touch but are widely separated when in centric occlusion the condition is known as an "open bite".(T/F)
  104. If the buccal groove of the mandibular first molar is posterior to the mesiobuccal  cusp of the maxillary first molar this is classified as:
    Class II occlusion Division I
  105. An occlusal curve exists for posterior teeth in a direction from right to left. This is known as the Curve of Spee.
    • FALSE
    • Curve of Wilson
  106. The term "malocclusion" is the same as "intercuspation".(T/F)
  107. According to E.H. Angle's classification a Class III occlusal relationship is also called a distooclusion.(T/F)
    • FALSE
    • messiocclusion
  108. If one or more teeth in the mandibular arch are located facial to their maxillary counterparts a condition know as "crossbite" occurs. A crossbite condition can exist between any number of teeth.
    First statement is True second statement is True.
  109. If the buccal groove of the mandibular first molar is more anterior than normal to the mesiobuccal cusp of the maxillary first molar this is classified as:
    Class III
  110. Protrusion is when the maxilla moves forward from centric occlusion.(T/F)
    • FALSE
    • Mandible moves foward
  111. An overjet can be measured with a periodontal probe to assess the amount of horizontal overlap of the maxillary teeth.(T/F)
  112. When the jaws are closed in centric occlusion the cusps of the maxillary teeth overlap the cusps of the mandibular teeth so that the maxillary teeth are facial to the mandibular teeth.(T/F)
Card Set
DHE 104 morph final review
DHE 104 morph final review