Dental Arch Length Analysis
85 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is added to the sum of widths of mandibular permanent incisors for the lower arch in the method described?

  • 10 mm
  • 11 mm
  • 10.5 mm (correct)
  • 12 mm

    • In the Bolton Analysis, what ratio is calculated between the mesio-distal widths of maxillary and mandibular teeth?

  • Height ratio
  • Tooth mass ratio (correct)
  • Length ratio
  • Width ratio

    • What does a positive result in the method described indicate?

  • Need for additional radiographs
  • Insufficient space in the arch
  • No impact on tooth eruption
  • More space than needed in the arch (correct)

    • What is a key advantage of the method described for predicting tooth mass?

    <p>Simple and easily repeated procedures</p> Signup and view all the answers

    What must a clinician do if a significant tooth mass discrepancy is noted in Bolton Analysis?

    <p>Assess where the problem is located</p> Signup and view all the answers

    What does a negative result in the method described indicate?

    <p>Not enough space for the unerupted teeth</p> Signup and view all the answers

    How is the tooth mass ratio calculated in Bolton Analysis?

    <p>Sum of mandibular / sum of maxillary x 100</p> Signup and view all the answers

    What does the mean value of the overall ratio (12 teeth versus 12 teeth) in Bolton Analysis indicate?

    <p>Possible tooth mass problems</p> Signup and view all the answers

    What does it mean if there is more space available in the arch than needed for the unerupted teeth, according to the text?

    <p>Sufficient space for eruption</p> Signup and view all the answers

    What are the primary factors that determine the status of a permanent dental arch?

    <p>Tooth size and jaw size</p> Signup and view all the answers

    What is the effect on the permanent dental arch when tooth size and arch size are not balanced?

    <p>Crowding</p> Signup and view all the answers

    Which feature of dental arch malocclusion is considered the most common?

    <p>Crowding</p> Signup and view all the answers

    When is an ideal dental arch possible?

    <p>When the combined size of permanent teeth is balanced with the alveolar apical area</p> Signup and view all the answers

    What is the purpose of arch length analysis in dentistry?

    <p>To estimate space adequacy for succedaneous tooth eruption</p> Signup and view all the answers

    Which analysis compares the space required and space available to determine arch length discrepancy?

    <p>Nance analysis</p> Signup and view all the answers

    In dental arch analysis, what leads to crowding or spacing issues?

    <p>Imbalance between tooth size and arch size</p> Signup and view all the answers

    'Succedaneous tooth' refers to a tooth that:

    <p>Will eventually be replaced by another tooth</p> Signup and view all the answers

    'Arch length discrepancy' in dentistry refers to:

    <p>'Short' or 'long' teeth in relation to the dental arch</p> Signup and view all the answers

    What is the main focus of Nance analysis in dentistry?

    <p>Estimating space adequacy for new teeth</p> Signup and view all the answers

    Which method is used during the mixed dentition period to predict the size of unerupted teeth?

    <p>Moyer's mixed dentition analysis</p> Signup and view all the answers

    What is the primary reason for the limited use of Nance arch length analysis?

    <p>It necessitates complete sets of periapical radiographs</p> Signup and view all the answers

    Which method allows for determining arch length discrepancies without the use of radiographs?

    <p>Moyer's mixed dentition analysis</p> Signup and view all the answers

    What is a key advantage of Moyer's mixed dentition analysis?

    <p>It can be done with equal reliability by beginners and experts</p> Signup and view all the answers

    What can be expected if the predicted tooth size is greater than the available arch length?

    <p>Crowding of teeth</p> Signup and view all the answers

    Why are mandibular incisors chosen for measurement in Moyer's mixed dentition analysis?

    <p>They erupt early in mixed dentition and can be accurately measured</p> Signup and view all the answers

    ______ size and alveolar size are the primary factors that determine the status of permanent dental arch

    <p>Tooth</p> Signup and view all the answers

    Only when the combined size of permanent teeth is balanced with the size of alveolar apical area is an ideal dental arch ______

    <p>possible</p> Signup and view all the answers

    Arch length analysis is done to estimate the space adequacy for succedaneous tooth and fairly predict how much space will be required for eruption and proper alignment in the dental ______

    <p>arch</p> Signup and view all the answers

    Crowding is the most common feature of dental arch ______

    <p>malocclusion</p> Signup and view all the answers

    In Nance analysis, the space required and space available are compared to arrive at arch length ______

    <p>discrepancy</p> Signup and view all the answers

    Various analysis used for estimating space adequacy include Nance ______

    <p>analysis</p> Signup and view all the answers

    Arch length analysis helps in predicting how much space will be required for eruption and proper alignment in the dental ______

    <p>arch</p> Signup and view all the answers

    The status of a permanent dental arch is determined by tooth size and alveolar ______

    <p>size</p> Signup and view all the answers

    When tooth size and arch size are not balanced, the effect on permanent dental arch is ______ or spacing

    <p>crowding</p> Signup and view all the answers

    An ideal dental arch is possible only when the combined size of permanent teeth is balanced with the size of alveolar apical ______

    <p>area</p> Signup and view all the answers

    Nance concluded that in the average patient’s mandibular arch a leeway of 1.7 mm per side exists between combined mesiodistal widths of primary mandibular canine and first and second primary molars and the mesio distal length widths of corresponding permanent teeth, with the primary teeth being larger

    <p>difference</p> Signup and view all the answers

    The Nance arch length analysis is ______ used, partly because the involved procedure for this analysis requires a complete set of periapical radiographs

    <p>seldom</p> Signup and view all the answers

    Moyer’s mixed dentition analysis is used during the mixed dentition period to predict the size of unerupted teeth by looking at the teeth present in oral cavity

    <p>possible</p> Signup and view all the answers

    Moyer’s mixed dentition analysis can be completed in mouth as well as on casts

    <p>both</p> Signup and view all the answers

    Moyer’s mixed dentition analysis is based on ______ of tooth size; one may measure a tooth or group of teeth and predict accurately the size of other teeth in the same mouth

    <p>correlation</p> Signup and view all the answers

    Moyer’s mixed dentition analysis measures the mesio-distal width of ______ incisors to predict the size of upper as well as lower, posterior teeth

    <p>mandibular</p> Signup and view all the answers

    Moyer’s mixed dentition analysis ______s the space available and space required in all four quadrants to determine arch length discrepancy

    <p>compare</p> Signup and view all the answers

    Tanaka and Johnston analysis is a ______ of Moyer’s analysis except that a prediction table is not needed

    <p>variation</p> Signup and view all the answers

    Tanaka and Johnston analysis is a variation of Moyer’s analysis except that a prediction table is not ______

    <p>needed</p> Signup and view all the answers

    Arch length discrepancy in dentistry refers to the ______ between space available and space required in all four quadrants to determine arch length discrepancy

    <p>difference</p> Signup and view all the answers

    The sum of widths of mandibular permanent incisors is measured and divided by 2. For the lower arch, 10.5 mm is added to the result. For the upper arch, 11 mm is added to the result to obtain the total estimated widths of canines and premolars. This method is used during the ______ period.

    <p>mixed dentition</p> Signup and view all the answers

    If the width of lower incisors is 23 mm, divide by 2 and add 10.5 mm for the lower arch, the result is 22 mm compared with 22.2 mm obtained from ______'s table.

    <p>Moyer</p> Signup and view all the answers

    Bolton Analysis is also known as Bolton’s tooth size ratio analysis and is used during the ______ period.

    <p>permanent dentition</p> Signup and view all the answers

    The Bolton analysis ratio measurement is as follows: Sum of mandibular / sum maxillary x 100 = tooth mass ratio. For the overall ratio (12 teeth versus 12 teeth), the mean is ______.

    <p>91.3</p> Signup and view all the answers

    For the anterior ratio (6 teeth versus 6 teeth) in Bolton Analysis, the mean is ______.

    <p>77.2</p> Signup and view all the answers

    When a significant discrepancy with the Bolton analysis ratio is noted, the clinician must assess where the tooth mass problem is located and decide on the best method to resolve it by addressing tooth mass discrepancies between maxillary and mandibular ______.

    <p>arches</p> Signup and view all the answers

    If the result is positive in the method described, there is more space available in the arch than is needed for the unerupted ______.

    <p>teeth</p> Signup and view all the answers

    If the result is negative in the method described, the unerupted teeth require more space than is available to erupt into ideal ______.

    <p>alignment</p> Signup and view all the answers

    The technique involved in the method described is simple, easily repeated procedures and minimal material needs, and it doesn’t use prediction charts. This method doesn’t require additional ______.

    <p>radiograph</p> Signup and view all the answers

    In Moyer's mixed dentition analysis, the sum of widths of mandibular permanent ______ is measured.

    <p>incisors</p> Signup and view all the answers

    Tooth size and arch size are the primary factors that determine the status of permanent dental arch.

    <p>True</p> Signup and view all the answers

    Crowding is the least common feature of dental arch malocclusion.

    <p>False</p> Signup and view all the answers

    Only when the combined size of permanent teeth is balanced with the size of alveolar apical area is an ideal dental arch achievable.

    <p>True</p> Signup and view all the answers

    Nance analysis is used to compare space required and space available to determine arch length discrepancy.

    <p>True</p> Signup and view all the answers

    Arch length analysis helps in predicting how much space will be required for eruption and proper alignment in the dental arch.

    <p>True</p> Signup and view all the answers

    The primary reason for limited use of Nance arch length analysis is its complexity.

    <p>False</p> Signup and view all the answers

    An ideal dental arch is achievable when tooth size and arch size are not balanced.

    <p>False</p> Signup and view all the answers

    Moyer's mixed dentition analysis cannot be completed on casts.

    <p>False</p> Signup and view all the answers

    Bolton Analysis ratio involves dividing the sum of mandibular teeth widths by the sum of maxillary teeth widths.

    <p>True</p> Signup and view all the answers

    The mean value from overall ratio (12 teeth versus 12 teeth) in Bolton Analysis indicates tooth mass discrepancy.

    <p>True</p> Signup and view all the answers

    In Moyer's mixed dentition analysis, the sum of widths of mandibular permanent incisors is measured and divided by 2.

    <p>True</p> Signup and view all the answers

    The Bolton Analysis is also known as Nance tooth size ratio analysis.

    <p>False</p> Signup and view all the answers

    Bolton Analysis is used during the mixed dentition period.

    <p>False</p> Signup and view all the answers

    In the Bolton Analysis, the overall ratio (12 teeth versus 12 teeth) mean is 91.3.

    <p>True</p> Signup and view all the answers

    The method described for predicting tooth mass requires the use of prediction charts.

    <p>False</p> Signup and view all the answers

    Arch length discrepancy in dentistry refers to the imbalance between space available and space required in all four quadrants.

    <p>True</p> Signup and view all the answers

    If the result is positive in the method described, there is less space available in the arch than needed for the unerupted teeth.

    <p>False</p> Signup and view all the answers

    Nance arch length analysis is widely used due to its simple procedure that does not require radiographs.

    <p>False</p> Signup and view all the answers

    The primary factors that determine the status of a permanent dental arch are tooth size and gingival size.

    <p>False</p> Signup and view all the answers

    Moyer’s mixed dentition analysis focuses on predicting the size of unerupted teeth based on arch length discrepancies.

    <p>False</p> Signup and view all the answers

    Moyer's mixed dentition analysis can be done with equal reliability either by beginner or by an expert

    <p>True</p> Signup and view all the answers

    In Nance analysis, the leeway of 1.7 mm per side exists between the combined mesiodistal widths of primary mandibular canine and first and second primary molars compared to the corresponding permanent teeth

    <p>True</p> Signup and view all the answers

    Tanaka and Johnston analysis requires the use of a prediction table

    <p>False</p> Signup and view all the answers

    Moyer's mixed dentition analysis involves measuring the mesio-distal width of mandibular incisors

    <p>True</p> Signup and view all the answers

    Nance arch length analysis is widely used due to its simple procedure

    <p>False</p> Signup and view all the answers

    Moyer's mixed dentition analysis is based on the correlation of tooth size

    <p>True</p> Signup and view all the answers

    The sum total mesio-distal width of upper and lower cuspids and bicuspids in Moyer's analysis is found at 75% probability

    <p>True</p> Signup and view all the answers

    Nance concluded that the difference in total mesio-distal width of corresponding three primary teeth in the maxillary arch compared to the width of three permanent teeth that succeed them is 0.9 mm per side

    <p>False</p> Signup and view all the answers

    Moyer's mixed dentition analysis predicts the size of unerupted teeth by measuring the space between primary mandibular canine and first and second primary molars

    <p>False</p> Signup and view all the answers

    In Moyer's mixed dentition analysis, if the predicted value exceeds available arch length, crowding of teeth can be expected

    <p>True</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser