> Dentists with shorter waiting times are more likely to propose unnecessary treatment. Does this mean that dentists who are better at dentistry (and as a resu

> Dentists with shorter waiting times are more likely to propose unnecessary treatment. Does this mean that dentists who are better at dentistry (and as a result have more patients) are less likely to propose unnecessary treatment because they know better? Does it mean that dentists who have fewer patients (and are therefore more desperate for money) are more likely to propose expensive treatment?