This is a common experience. While it can take some people a little while to get used to, you will find that your jaw will move back into place quite naturally and comfortably, shortly after you remove the mouthpiece. To help reduce or mitigate long term jaw issues we pass on the advice of Prof M Stubbs
Professor Michael Stubbs is a great advocate of SleepPro products and regularly lectures on the benefits of Mandibular Advancment Devices. He is actively involved with the provision of dental courses world wide instructing dentists on the treatment and management of Sleep Apnoea devices
https://michaelstubbs.com.au/index.php
Professor Michael Stubbs trained as a dentist and then specialised in the diagnosis and treatment of patients with facial or jaw pain that is not derived from the teeth. Dr Stubbs also diagnoses and manages any disorder or disease involving the mouth or jaws and sleep apnoea/snoring disorders with the use of custom made dental devices.
For those experiencing discomfort or jaw position issues when wearing a MAD, here are some practical exercises that can help
- In a custom made dental device the bite changes do occur after 6 months to 3 years time frame of use, when worn nightly. We do advise patients at the consultation period the side effects such as occlusal changes and temporomandibular disorder
- I have experienced some patients reporting the sleep pro device affects their bite as well, but temporary
I recommend the following approach:
The patient should either chew a small piece of chewing gum on their back teeth only in the morning, for 15-20 minutes to help re-align the bite
I also recommend a modified version of the Roccabado technique in which the patient puts the tip of their tongue into the middle of the hard palate, opens their mouth and counts to 20 to themselves. They do this six times in the morning and at different times during the daytime. Including, yawning
This approach is also a simple, practical approach