Test your basic knowledge |

Dentistry Tooth Development And Eruption

Subjects : health-sciences, dentistry

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. What will the inner cells of the dental lamina differentiates into?
The primordium of the pulp
Faulty development of enamel from interference involving ameloblasts
Cementocytes
Enamel pearl - enamel dysplasia - and concresence

2. When does dens in dente occur?
During the cap stage
The disintegration of the basement membrane allows the preameloblasts to come into contact with the newly formed predentin
Odontogenesis
The successional dental lamina - an extension of the dental lamina that extends out lingually to the primary tooth germs

3. When does macro/microdontia occur?
Abnormally small teeth
Bud stage
A bilayer rim that consists only IEE and OEE
The enamel - dentin - and cementum are secreted in successive layers

4. The stage named for extensive proliferation of the dental lamina into oval masses penetrating into the ectomesenchyme?
Lines of Retzuis
The outer enamel epithelium - the inner enamel epithelium - the stellate reticulum - and the stratum intermedium
The bud stage
It disintegrates as the developing oral mucosa comes to line the oral cavity

5. What is macrodontia?
There are none - they are lost with eruption
A mineralized cylinder - the dentinal tubule
Abnormally large teeth
The ectomesenchyme

6. What is the embryological background for enamel?
The outer enamel epithelium - the inner enamel epithelium - the stellate reticulum - and the stratum intermedium
After the crown is completely shaped and the tooth is starting to erupt into the oral cavity
Commonly involves permanent maxillary lateral incisor and 3rd molars
Enamel organ

7. Which teeth are nonsuccedaneous?
The permanent molars
Hereditary - endocrine dysfunction - systemic disease - excess radiation exposure
After the crown is completely shaped and the tooth is starting to erupt into the oral cavity
Ameloblasts

8. What are the clinical ramifications of anodontia?
Large single rooted tooth with one pulp cavity and exhibits 'twinning' in crown area. normal number of teeth in dentition. may cause problems in appearance and spacing
The ameloblasts place an acellular dental cuticle on the new enamel surface
Cementocytes
May cause disruption of occlusion and aesthetic problems - may need partial or full dentures - bridges - and/or implants

9. What is the cementum matrix called?
Cementoid
Dentin and alveolar bone
The basement membrane
The ameloblasts

10. What is microdontia?
Odontoblastic process
Abnormally small teeth
It disintegrates as the developing oral mucosa comes to line the oral cavity
Imbrication lines of von Ebner

11. What are the development disturbances of the apposition and maturation stages?
The dental sac
The stellate reticulum
Maturation
Enamel pearl - enamel dysplasia - and concresence

12. What are the clinical ramifications of dens in dente?
The ectomesenchyme
Commonly affects the permanent maxillary lateral incisor. tooth may have deep lingual pit and need endodontic therapy
Displacement of ameloblasts to root surface
The basement membrane that seperates the enamel organ and dental papilla

13. What happens during initiation?
Ectoderm lining stomodeum gives rise to the oral epithelium and then to the dental lamina - adjacent to deeper ectomesenchyme - Which is influenced by the neural crest cells. Both tissues are seperated by a basement membrane
After the crown is completely shaped and the tooth is starting to erupt into the oral cavity
Hereditary
Abnormally small teeth

14. What are the etiological factors for dens in dente and gemination?
Enamel organ forms into cap - surrounding mass of dental papilla from the ectomesenchyme and surrounded by mass of dental sac also from the ectomesenchyme. Formation of the tooth germ.
Hereditary
The ameloblasts
Osteoblasts

15. When root formation is completed the portion of the basement membrane disintegrates its cells may become what?
Epithelial rests of Malassez
Initiation stage
Development of one or more extra teeth
Differentiation of enamel organ into bell with four cell types and dental papilla into two cell types.

16. What is amelogenisis?
The apposition of the enamel matrix
Cuboidal cells
Osteoblasts
Local or systemic or hereditary

17. What is the time span for the cap stage?
9th to 10th weeks
The basement membrane that seperates the enamel organ and dental papilla
Cuboidal cells
Traumatic injury or crowding of teeth

18. What is the function of the Hertwig's epithelial root sheath?
Arrest and reversal lines
Dens in dente - gemination - tubercle - and fusion
Growth of the dental lamina into bud that penetrates growing ectomesenchyme
To shape the root (or roots) and induce dentin formation in the root area so that it is continuous with coronal dentin

19. When does the tooth bud become a tooth germ?
Arrest and reversal lines
Hereditary - endocrine dysfunction - systemic disease - excess radiation exposure
In the cap stage
Dentin secreting cells (odontoblats)

20. What is concrescence?
Union of root structure of two or more teeth by cementum
Cementocytes
Arrest and reversal lines
Trauma - pressure or metabolic disease

21. What are entrapped cementoblasts called?
Hereditary in localized form. endocrine dysfunction is complete
Imbrication lines of von Ebner
The outer enamel epithelium
Cementocytes

22. The buds of the dental lamina - together with the surrounding ecto mesenchyme - will develop into what?
Tooth germ
Ameloblasts
Epithelial rests of Malassez
Dental tissues fully mineralize to their mature levels.

23. What will the outer cells of the dental lamina differentiate into?
Trauma - pressure or metabolic disease
Osteoblasts
There are none - they are lost with eruption
Dentin secreting cells (odontoblats)

24. The oral epithelium is induced by the ectomesenchyme to produce what?
The dental lamina
Arrest and reversal lines
The Tomes' process - a tapered portion of each ameloblast that faces the disintegrating basement membrane
Cementoid

25. What are the clinical ramifications of enamel pearl?
Local or systemic or hereditary
May be confused as calculus deposit on root
Enamel organ forms into cap - surrounding mass of dental papilla from the ectomesenchyme and surrounded by mass of dental sac also from the ectomesenchyme. Formation of the tooth germ.
Compressed layer of flat to cuboidal cells

26. What does the cervical loop consist of?
Maturation
Dental papilla
The actual vertical movement of the tooth
A bilayer rim that consists only IEE and OEE

27. What are the developmental disturbances of the cap stage?
Cementocytes
Dens in dente - gemination - tubercle - and fusion
Preameloblasts
Pitting or intrinsic color changes in enamel. changes in thickness of enamel possible. problems in function and aesthetics

28. What is an enamel pearl?
Outer
Union of 2 adjacent tooth germs
Sphere of enamel on root
Odontoblasts

29. What are the etiological factors of tubercle?
Yes - this is why the dentin is thicker in the mature tooth structure than the enamel
Trauma - pressure or metabolic disease
As a result of the apposition of cementum over dentin
Ectoderm lining stomodeum gives rise to the oral epithelium and then to the dental lamina - adjacent to deeper ectomesenchyme - Which is influenced by the neural crest cells. Both tissues are seperated by a basement membrane

30. The preameloblasts induce dental papilla cells to differentiate into what?
9th to 10th weeks
Into odontoblasts
Dentin secreting cells (odontoblats)
The dental lamina

31. What are supernumerary teeth?
Development of one or more extra teeth
Large single rooted tooth with one pulp cavity and exhibits 'twinning' in crown area. normal number of teeth in dentition. may cause problems in appearance and spacing
The bud stage
Morphogenesis

32. What processes are involved with the apposition stage?
The enamel organ is compressed
The dental sac
Induction - proliferation
Cementoid

33. The remaining ectomesenchyme surrounding the outside of the enamel organ condenses into what?
The enamel organ
The dental sac
Ectoderm lining stomodeum gives rise to the oral epithelium and then to the dental lamina - adjacent to deeper ectomesenchyme - Which is influenced by the neural crest cells. Both tissues are seperated by a basement membrane
Outer

34. How many types of cells are found in the enamel organ in the bell stage?
Proliferation - differentiation - morphogenesis
Cementoid
4 types
Dentin and alveolar bone

35. What are the major components of the tooth germ?
Hereditary
Outer
The enamel organ - dental papilla - dental sac
Tall columnar cells

36. What is cementogenisis?
Occurs commonly between the maxillary centrals - distal to the 3rd molars and premolar region. may cause crowding - failureof normal eruption and disruption of occlusion
Apposition of the cementum
Cementocytes
Hereditary in localized form. endocrine dysfunction is complete

37. What is anodontia?
Dental papilla
The apposition of the enamel matrix
Absence of single or multiple teeth
Cementoblasts

38. What are the formative cells for dentin?
Cementocytes
The enamel organ - dental papilla - dental sac
Odontoblasts
Odontoblastic process

39. What is the inner mass in the cap stage that forms a concavity of the enamel organ?
The actual vertical movement of the tooth
Dental follicle
Dental papilla
Commonly involves permanent maxillary lateral incisor and 3rd molars

40. What is the main process involved in the bud stage?
Inner
The basement membrane
Proliferation
The ameloblasts place an acellular dental cuticle on the new enamel surface

41. What is the primordium of the tooth?
Osteoblasts
The tooth germ
Inner
Enamel organ invaginates into the dental papilla

42. What happens during the maturation stage?
Maturation
It disintegrates as the developing oral mucosa comes to line the oral cavity
The stellate reticulum
Dental tissues fully mineralize to their mature levels.

43. What type of tissue is enamel?
Odontoclasts
4 types
The disintegration of the basement membrane allows the preameloblasts to come into contact with the newly formed predentin
Epithelial

44. What are the etiological factors for micro/macrodontia?
The enamel - dentin - and cementum are secreted in successive layers
Hereditary in localized form. endocrine dysfunction is complete
Odontogenesis
Proliferation - differentiation - morphogenesis

45. Where does the primordium of the permanent dentition develop?
The successional dental lamina - an extension of the dental lamina that extends out lingually to the primary tooth germs
Dental papilla
It disintegrates as the developing oral mucosa comes to line the oral cavity
In the cap stage

46. What are the odontoblastic processes is contained in what?
Connective
Ectoderm lining stomodeum gives rise to the oral epithelium and then to the dental lamina - adjacent to deeper ectomesenchyme - Which is influenced by the neural crest cells. Both tissues are seperated by a basement membrane
Yes - this is why the dentin is thicker in the mature tooth structure than the enamel
A mineralized cylinder - the dentinal tubule

47. What conveys communications between the cells of the enamel organ - the dental papilla - and the dental sac allowing tissue interactions?
The disintegration of the basement membrane allows the preameloblasts to come into contact with the newly formed predentin
The dental lamina
The basement membrane
A bilayer rim that consists only IEE and OEE

48. What causes the induction of the preameloblasts to differentiate into ameloblasts?
Hereditary
The disintegration of the basement membrane allows the preameloblasts to come into contact with the newly formed predentin
Common with permanent maxillary molars
Sphere of enamel on root

49. What are the clinical ramifications of supernumerary teeth?
The dental lamina
The ameloblasts
Occurs commonly between the maxillary centrals - distal to the 3rd molars and premolar region. may cause crowding - failureof normal eruption and disruption of occlusion
Outer

50. What is the time span for the bud stage?
8th week
Local or systemic or hereditary
Imbrication lines of von Ebner
Oral epithelium

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Major Subjects
Tests & Exams AP CLEP DSST GRE SAT GMAT	Certifications CISSP go to https://www.isc2.org/ PMP ITIL RHCE MCTS More...	IT Skills Android Programming Data Modeling Objective C Programming Basic Python Programming Adobe Illustrator More...	Business Skills Advertising Techniques Business Accounting Basics Business Strategy Human Resource Management Marketing Basics More...
Soft Skills Body Language People Skills Public Speaking Persuasion Job Hunting And Resumes More...	Vocabulary GRE Vocab SAT Vocab TOEFL Essential Vocab Basic English Words For All Global Words You Should Know Business English More...	Languages AP German Vocab AP Latin Vocab SAT Subject Test: French Italian Survival Norwegian Survival More...	Engineering Audio Engineering Computer Science Engineering Aerospace Engineering Chemical Engineering Structural Engineering More...
Health Sciences Basic Nursing Skills Health Science Language Fundamentals Veterinary Technology Medical Language Cardiology Clinical Surgery More...	English Grammar Fundamentals Literary And Rhetorical Vocab Elements Of Style Vocab Introduction To English Major Complete Advanced Sentences Literature Homonyms More...	Math Algebra Formulas Basic Arithmetic: Measurements Metric Conversions Geometric Properties Important Math Facts Number Sense Vocab Business Math More...	Other Major Subjects Science Economics History Law Performing-arts Cooking Logic & Reasoning Trivia

Test your basic knowledge |

Dentistry Tooth Development And Eruption

Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?

Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests

Major Subjects

Tests & Exams

Certifications

IT Skills

Business Skills

Soft Skills

Vocabulary

Languages

Engineering

Health Sciences

English

Math

Other Major Subjects

Browse all subjects

Browse all tests

Most popular tests