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125 terms

Mariana Dental Anatomy, Embry & Hist

Test Review for Final Practice Test Dec 2011
STUDY
PLAY
Which of the following orofacial structures contributes to the prominence of the neck that is also called the "Adam's apple"?
Thyroid cartilage
If tooth #30 was extracted due to extensive decay and a ______________ was not inserted in the space, tooth #31 might drift_______________.
Space Maintainer; Mesially
What type of blood cell is DIRECLTY reponsible for immunoglobulin production?
Plasma Cells
Which of the following statements concerning pigmentation in the oral cavity is CORRECT?
Pigmentation serves no known function in the oral cavity.
Which of the permanent teeth is the first to erupt into the oral cavity?
Mandibular first molar
In salivary glands, which of the following structures is composed of secretory epithelial cells?
acinus
What is the name of the groove that runs mesially from the central pit to the mesial triangular fossa?
Mesial groove
The normal amount of horizontal overlap between the two arches is called:
Overjet
The two roots of a maxillary first premolar tooth are named for their position which are?
Buccal and lingual
Which of the following orofacial structures contains the alveolus of a tooth?
Alveolar process
A series of palatal tissue elevations or wrinkles, located behind the maxillary anterior teeth.
Palatine Rugae
The oral tissues closest to the inner cheek are described as:
Buccal
Which of the following tissues is MOST likely the source of cementogenic cells in adults who have undergone root planning (scraping of the root surface to remove debris)?
periodontal ligament
Which of the following has the highest rate of desquamation?
junctional epithelium
Which of the following terms describes an area of the crown where two surfaces join?
Line angle
How many total canines are present in both arches of the permanent dentition?
4
Which of the following structures is not visible in any portion on intraoral examination?
Laryngopharynx
The midline between teeth #24 and #25 is directly in the middle of sextant__________.
5
Cell renewal of the junctional epithelium takes place in the:
basal layer of the tissue
The dental lamina is an embryonic structure that develops from the:
Oral epithelium
A midline depression on the dorsal surface of the tongue is called the:
median lingual sulcus
Dentin on the average is about _______% mineralized by weight.
70%
Which of the following oral landmarks may be noted on the soft palate?
Uvula
How many mm from the CEJ does the furcation occur on the buccal surface of #30?
3mm
Which of the following salivary glands are associated with the circumvallate lingual papillae and secrete only serous saliva?
Von Ebner's
In the oral cavity, masticatory mucosa always contains a (an):
a prickle layer.
Which of the following features is noted on a newly erupted permanent mandibular canine?
Mesial cusp slope is shorter than the distal cusp slope
Which of the following has the greatest mesiodistal width of any tooth in the oral cavity?
#19
Which portion of the tooth is covered by enamel and remains constant even if the patient undergoes gingival recession?
Anatomic crown
True or False: The mesial cusp slope of the maxillary canine is longer than the distal cusp slope.
True
True or False: The distal groove on the maxillary first molar runs from the central pit across the oblique ridge and terminates in the distal triangula fossa. This groove is often called the transverse groove of the oblique ridge.
True
How many tooth buds in the dental lamina appear along each dental arch during odontogenesis of the primary dentition?
10
The epithelial attachment refers to the internal basal lamina and the:
hemidesmosomes of the basal cells
Which embryonic structure is specifically responsible for the development of the root?
Cervical loop
The attached gingiva and buccal mucosa are mainly pinkish in color and not reddish due to the:
increased thickness of the epithelial layers.
Which of the following oral landmarks consists of 10-14 mushroom shaped structures line up anterior to the sturcture that separates the base of the tongue from the body of the tongue?
Circumvallate lingual papillae
Which of the following lingual surface features may occur on tooth #7 and tooth #10?
Lingual pit and or linguogingival groove
On which of the following orofacial tissues is the linea alba located?
Buccal mucosa
The voluntary position of the dentition that allows the maximum contact when the teeth occlude.
Centric
Parafunctional habits __________________.
Occur over a long time and are not within normal range of motion.
True or False: The triangular ridge of each cusp on tooth #31 is inclined toward the central groove because the four cusps are nearly equal.
True
Which of the following permanent teeth are usually present in a patient at the age of 8 years old?
Central incisors, lateral incisors and first molars
Which of the following describes the usual groove pattern on the occlusal table of the permanent mandibular second molar?
Cross
An indicator in the primary dentition for a normal molar relationship in the permanent dentition is a __________.
Mesial step
In which portion of the crown are both contact areas of the permanent mandibular first molar located?
Junction of the occlusal and middle third
Which of the following basic tissue types is characterized by many different types of cells surrounded by large amounts of intercellular substance with vascularization present?
connective tissue
Which of the following statements is correct when discussing the height of contour of a tooth?
It can be located at the contact area proximally
Which design for a mandibular second premolar is most common?
Three cusps
Which of the following pulp structures is formed when Hertwig's Epithelial Root Sheath encounters a blood vessel?
accessory canal
Which of the following statements concerning Fordyce's spots is correct?
They are composed of sebum from sebaceous glands
The MOST common cell type in connective tissues such as the pulp and periodontal ligament is the:
fibroblast
Which of the following lingual papillae are located on the lateral surface of the tongue?
Foliate papillae
Using the Universal Tooth Designation System identify the permanent mandibular left first premolar.
#21
True or False: A crossbite occurs when the maxillary teeth are within the confines of the mandibular teeth.
True
Which of the following tissues provides nutrition for the underlying compact bone?
periosteum
True or False: The clinical crown becomes larger with gingival recession
True
When the incisal edges of teeth #7,8,9,10 touch the gingiva in front of teeth #23, 24, 25, 26 it is called _________________.
Severe overbite.
The macrophages found in the connective tissue are derived from:
neutrophils
The sternocleidomastoid muscle separates which of the two sets of orofacial structures?
Anterior cervical triangle, posterior cervical triangle
Which of the following divides each dental arch into sextants?
CaninesCanines
Which cusp of the maxillary first molar is associated with the Cusp of Carabelli?
Mesiolingual cusp
Nonsuccedaneous permanent teeth develop from buds that grow off an extension of the:
Primary second molar's dental lamina
Which of the following features is a result of the greater development of the middle labial lobe on teeth # 6 & 11?
Labial ridge
The facial profile associated with a Class III malocclusion is __________.
Prognathic
The lingual ridge is located ____________ on the lingual surface of permanent maxillary canines.
Incisocervically
The permanent mandibular second molars are correctly designated as teeth:
#18 and #31
An open contact between the maxillary central incisors is called a:
Diastema
Which of the following terms associated with dentin can be used to CORRECTLY describe the largest portion of the tooth's dentin?
circumpulpal dentin
Which of the following describes the divisions of the roots of a permanent maxillary second molar?
Two buccal and one palatal
Which of the following developmental grooves is found on the crown of a permanent mandibular first molar but not on the permanent mandibular second molar?
Distobuccal groove
On which tooth can the cusp slope exhibit a notch?
Maxillary canine
The root of the mature and fully erupted tooth is composed of:
dentin, cementum and pulp
Triangular-space between two teeth created by the sloping away of the mesial and distal surfaces either facially, lingually, occlusally or apically.
Embrasure
The crown of the permanent mandibular first molar when viewed from the proximal is inclined:
Lingually
Of the various epithelia that make up the gingiva, which one does NOT normally keratinize?
Junctional epithelium
Which of the following embryonic structures becomes the dentinoenamel junction (DEJ)?
Basement membrane between the enamel organ and the dental papilla
Certain restorations cover the entire crown area of a tooth and are called:
Crowns
Which of the following facial features is located laterally to each naris?
Nasal ala
The facial or buccal cusps of the maxillary posterior teeth occlude in the central groove of the mandibular posterior teeth. This is a description of :
Crossbite
What is the angled portion of the ameloblast that secrets the enamel matrix?
Tomes' process
The line demarcation between the attached gingiva and the alveolar mucosa is the:
mucogingival junction
Concave curve that results when a frontal section is taken through each set of both maxillary and mandibular molars viewed on a study model:
Curve of Wilson
During the cap stage of tooth development, the tooth germ consists of:
Enamel organ, dental sac, and the dental papilla
Which of the following statements concerning active eruption of a permanent succedaneous tooth is correct?
The shedding of the associated primary tooth is intermittent
Which of the following orofacial structures is located in the midline of the face or neck?
Philtrum
Hertwig's root sheath is entirely composed of:
Inner and outer enamel epithelium
Which of the following changes occurs to those specific cells from the enamel organ which will differentiate into preameloblasts?
Repolarize their nuclei
The permanent mandibular canine, when compared to the maxillary canine :
Crown is narrower mesiodistally
Which tooth is adjacent and distal to the primary maxillary second molar in a 7 year old child?
Permanent maxillary first molar
The period of time, approximately from 6 months to 6 years of age, is the ______ period.
Primary dentition
The lips are outlined from the surrounding skin by a transition zone that is called the:
Vermilion border
The part of the root that is visible in the oral cavity is the__________.
Clinical root
Which designation reflects the proper sequence to use when identifying a tooth?
Deciduous mandibular left central incisor
The foramen cecum of the tongue is a :
depression at the apex of the sulcus terminalis
The outer cells of the dental papilla are induced to differentiate into:
Odontoblasts
Which letter from the Universal Tooth Designation System corresponds to the primary maxillary left first molar?
I
The permanent mandibular canine when compared to the maxillary canine:
Crown is narrower mesiodistally
The smallest cusp of all of the major cusps on tooth #3 is the:
Distolingual cusp
Class II, Distoclusion is divided into 2 divisions. Which statement is correct for Division I?
The mandible is retruded and all of the maxillary incisors are protruded.
If a tooth two roots, how many horizontal epithelial extensions or flaps will be involved in its root formation?
2
Which number designates a tooth using the International Standards Organization system?
44
The first premolar in each quadrant replaces the:
Primary first molar
Angel's Class I relationship occurs when the _____________:
mesiobuccal cusp of the maxillary first molar occludes in the mesiobuccal groove of the mandibular first molar.
RAL refers to the:
Angulation of the root in the alveolar bone.
Between which cusps does the oblique ridge of the permanent maxillary first molar extend on the occlusal table?
Mesiolingual cusp and the distobuccal cusp.
How many occlusal pits are present on the maxillary first molar?
3
True or False: Lateral excursion is the act of moving the mandible forward and in a protrusive direction.
False
Embrasures:
A. Are spillways for food.
B. Can prevent food from impacting around the gingiva.
C. Are larger on the lingual of posterior teeth due to the placement of the contact toward the buccal.
D. Are found on the incisal, occlusal, apical, labia and lingual surfaces
All of the above is the correct answer*
Deciduous teeth in general appear ____________at the CEJ than do the permanent teeth.
more constricted
The peritubular dentin that is found surrounding each odontoblastic process is:
more calcified than intertubular dentin
A cingulum in varying developmental levels can be found on the lingual surfaces of ___________________ in the permanent dentition.
All anterior teeth
The period of time from 6-12 years of age is the _________period.
Mixed dentition
The union of two triangular ridges forms a ____________________.:
Transverse ridge
The labial commissures of the face are located at the:
corners of the mouth
With increased age, the pulp tissue can become:
increasingly fibrotic
The portion of the crown that is visible in the oral cavity is the:
Clinical crown
Cellular cementum is MOST likely found around which of the following root regions?
apical portion of the root
Spaces between the primary maxillary lateral incisor and canine and between the primary mandibular canine and first molar are called______________.
Primate
Where does the dental lamina begin to form initially in the developing dental arches?
near the midline
Which of the following characteristics is noted in a patient during the primary dentition period compared with the permanent dentition period?
Lighter enamel color
The tooth surface that is toward the midline is the:
Mesial
Which of the following permanent teeth is usually the smallest and has the simplest features?
Mandibular central incisor
A difference is size between the permanent premolars and the deciduous molars create a________.
Leeway space
Which type of cellular junction serves to attach the junctional epithelium to the tooth surface?
hemidesmosomal
The functions of the dental pulp include:
a-Formative
b-Defensive
c-Nutritive
d-Reparative
All of the above