Orthodontics Model Analysis Quiz

What is the main purpose of model analysis in orthodontics?

• To check oral hygiene

• To evaluate skeletal growth

• To assess space availability and tooth alignment

• To diagnose periodontal disease

In Carey’s analysis, space analysis is done for which arch?

• Maxillary arch only

• Mandibular arch only

• Both arches

• Only anterior teeth

The Bolton analysis is primarily used to assess:

• Arch perimeter

• Tooth size discrepancy

• Overjet and overbite

• Curve of Spee

In Moyer’s Mixed Dentition Analysis, which teeth are measured to predict the size of unerupted canines and premolars?

• Upper central incisors

• Lower incisors

• Upper lateral incisors

• First molars

Which analysis uses a percentile prediction chart derived from a statistical study?

• Carey’s analysis

• Tanaka-Johnston analysis

• Moyer’s analysis

• Pont’s analysis

Which model analysis gives a formula for the ideal width of the maxillary arch based on the sum of the maxillary incisors?

• Bolton’s analysis

• Pont’s analysis

• Ashley Howe’s analysis

• Tanaka-Johnston analysis

Tanaka and Johnston analysis is applicable in:

• Deciduous dentition

• Permanent dentition

• Mixed dentition

• Edentulous patients

The Bolton’s overall ratio is calculated using which of the following formulae?

• (Sum of mandibular 6 anterior / Sum of maxillary 6 anterior) × 100

• (Sum of mandibular 12 teeth / Sum of maxillary 12 teeth) × 100

• (Maxillary arch length / Mandibular arch length) × 100

• (Arch perimeter / Tooth size) × 100

According to Ashley Howe’s analysis, a basal arch length deficiency greater than 5 mm indicates:

• Crowding can be managed non-extraction

• Extraction is most likely needed

• There is no discrepancy

• It is a case of pseudo-class III

Which of the following is a limitation of Moyer’s analysis?

• Requires radiographs

• It is not applicable to mixed dentition

• It is based on Caucasian population data

• It measures molars only