Absolutely not! In my opinion it is the initial sign of a pure failure in the first phase of the reversible treatment i.e. when the registration of the mandibular position, in which the device is going to be made, is taken.At the presence of a temporomandibular joint condylar asymmetry the higher condyle must be the guide in the registration. If this is not applied the splint will not provide bilateral oral stability and disturbing contacts will be the result.The never-ending trips to the dentist is being started.
A correctly made splint does not need any adjustments. It is a matter of how and when to wear the splint that will give the expected success.
There is one thing I cannot avoid to comment due to its absurdness. It was told in a discussion by a specialist in the field of facial pain that every splint needs to be adjusted regardless its fitness to the opposing jaw. Splint adjustment should show the patient the engagement and the involvment by the dentist. In other words, How stupid is that?