Table 1.

Descriptions of Primary Facial Photographs (Intraoral and Soft Tissue) Analyzed

Photograph	Description	Measures
Photograph P1	Picture taken from the front, with subject’s mouth open maximally, tongue within the mouth and no phonation	Modified Mallampati score; lateral mouth width; vertical mouth height; mouth area; tongue width; airway visibility
Photograph P2	Picture taken from the front, with subject’s mouth open maximally and tongue extended out of the mouth and downward maximally	Standard Mallampati score; lateral mouth width; tongue length; tongue width; tongue area
Photograph P3	Picture taken from the side (profile), with subject’s mouth open maximally and tongue extended out of the mouth and downward maximally	Tongue length; tongue area; tongue thickness; tongue curvature
Photograph P4	Picture taken from the front, with subject’s mouth open maximally, tongue depressed in the mouth and no phonation	Airway width; uvula length, width and area at the airway