Maxillary dental arch form related to voice classification: a pilot study

Area of Science:

• Dental Morphology
• Acoustic Phonetics
• Vocal Pedagogy

Background:

• Understanding the physical attributes influencing vocal production is crucial for singers.
• Maxillary dental arch characteristics have not been extensively studied in relation to voice classification.

Purpose of the Study:

• To investigate the relationship between maxillary dental arch form dimensions and volume and voice classification in professional female singers.
• To determine if dental arch parameters can serve as predictors for voice type.

Main Methods:

• Dental impressions and stone casts were used to measure palatal depth, width, and length.
• Palatal volume was determined using fluid displacement.
• Voice classification (soprano, mezzo, alto) was established through acoustic analysis and vocal assessment.

Main Results:

• No single dental measurement independently predicted voice classification.
• Discriminant analysis combining palatal depth (A and B) and volume achieved optimal classification accuracy, with each singer correctly assigned to her voice type.

Conclusions:

• Maxillary dental arch dimensions and volume, particularly palatal depth and volume, show a strong relationship with voice classification in professional singers.
• These dental parameters, when analyzed collectively, can be effective in classifying vocal ranges.