When speaking modern English, dentaility is the quality associated with clearly enunciating words by the use of one's teeth (not to be confused with teef)
"WhaT are you talkING AbouT?" is an example of good Dentality, where the T is clearly enunciated.
"Wha' are ya talm 'bouw?" would be an example of poor Dentaility. Where the ability to clearly enunciate words may be hindered by a pleTHora of reasons. Including physical and/or mental ailmenTs including lisps and excess tissue.
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.