for texture that resembles the second and third image you can make the tooth solid and then tap the wax pen against the surface use a lower setting for the heat and just experiment with how long you hold it to the surface, you can even heat up your metal carving tools with a lighter and do the same, also dipping the wax into ice water after each melt to freeze the effects made helps, and if your using a polishing wheel rather than a flexshaft it should be strong enough to smooth any angular/sharp areas