7 - Mixed Dentition Analysis

Question 1

moyers analysis uses analysis based on what measurements

Answer 1

mixed dentition space analysis based on measurement of mandibular permanent incisors

Question 2

what is a quantitative assessment of crowding based on measurements compared to AVERAGES of large data set

Answer 2

moyers analysis

Question 3

advantages of moyers analysis

Answer 3

used for both arches, can take measurements from casts or in mouth, does not rely on radiographic interpretation

Question 4

disadvantages of moyers analysis

Answer 4

probability analysis based on averaged date, averaged data set of undefined parameters

Question 5

where do you gets measurements fro moyers analysis

Answer 5

measured in mm on cast or in mouth with Boley gauge

Question 6

steps for Moyers analysis

Answer 6

Question 7

tanaka johnston uses measurement based on what

Answer 7

mixed dentition space analysis based on measurement of mandibular permanent incisors

Question 8

what is a quantitative assesment of crowding based on measurements and a MATHEMATICAL FORMULA developed by COMPARED AVERAGES of large data set

Answer 8

tanaka johnston anlysis

Question 9

advantages of tanaka johnston

Answer 9

can be used for both arches, can take measurements from casts or in the mouth, does not rely on radiographic interpretation

Question 10

disadvatnages of tanaka johnston

Answer 10

probability analysis based on averaged date, average data set of undefined parameters

Question 11

steps for tanaka johnston

Answer 11

Question 12

formulas for tanaka johnston

Answer 12

Question 13

bolton analysis is what type of mixed dentition analysis

Answer 13

An inter-arch proportional analysis used to determine if there is a tooth size discrepancy between the upper and lower teeth

Question 14

When do you typically perform bolton analysis

Answer 14

early permanent dentition

Question 15

steps for bolton analysis

Answer 15

Question 16

what do the different ratios that are more or less than 91.3% mean for bolton analysis?

Answer 16

more than 91.3 = maxillary teeth are relatively too small compared to mandibular teeth
less than 91.3 = maxillary teeth are relatively too large compared to mandibular teeth

Question 17

can you use pano rx for mixed dentition analysis?

Answer 17

yes BUT lacks image detail to accurately diagnose early carious lesions

Question 18

Why do use pano rx as a mixed dentition analysis technique

Answer 18

1. extraoral radiograph may be more tolerable for extremely fearful or anxious child
2. large field of view is helpful in monitoring growth and dvelopment as well as screening pathology
3. should be considered supplemental to intraoral techniques rather than a substitute

Question 19

when are pano rx taken for the first time

Answer 19

early mixed dentition during time of incisor transition

Question 20

when are pano rx indicated

Answer 20

any time in the primary dentition if suspected pathology or for evaluation after orofacial trauma

Question 21

patients in the classic mixed dentition (permanent molars and incisors with primary molars and canines) should havepano film taken when

Answer 21

if they have not yet had one to screen for pathology and evaluate growth and development with emphasis placed on looking for missing/extra teeth and permanent canine position

Question 22

how often should pano be taken

Answer 22

depends on patients individual needs, but from age 8-18 it’s prudent to consider taking it approximately every 3 years

Question 23

steps for mixed dentition analysis with pano

Answer 23

Question 24

what does “Rule of 3’s” mean

Answer 24

some instructors suggest counting in 3’s to determine the presence of the permanent (3-4-5)

e.g., look for premolar and canine groups that are unerupted