The tip of the tongue should rest on the tissue behind the top front teeth, with the body of the tongue pressing up against the palate from front to back. The tongue should not touch the teeth while in this position. When the tongue rests in this position, it puts pressure on the palate. The tongue in this position is partly responsible for forming a broad palate that will fit all teeth and create an ample airway space above the palate in the nasal cavity and the back of the throat.  
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Health conditions associated with improper tongue rest posture include snoring, sleep apnea, sleep-disordered breathing, improper tooth alignment, improper swallowing patterns, crowding teeth, TMJ pain, headaches, neck/shoulder pain, and more.

When a person swallows, the tongue should form a bowl, pressing up and back onto the palate.  It should not press onto the teeth, and there should be very few or no extra facial movements.  When the tongue doesn't push upward or press onto the teeth, it is called a tongue thrust swallowing pattern.  When swallowing correctly, the pressure of pressing onto the palate helps form an ideal size and shape of the jaws.  When the tongue pushes forward onto the teeth, it can cause the teeth and jaw to create less-than-perfectly.
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Health conditions associated with a tongue thrust swallowing pattern include misaligned teeth, poor jaw formation, digestive issues, and more.

Tongue tie is a restriction in the lingual frenum. Also called tethered oral tissue (TOT), It helps connect the tongue to the floor of the mouth. Everybody has a lingual frenum, but the connection is too short for some people. It can restrict the movement of the tongue, keeping it from resting on the roof of the mouth or from swallowing correctly.
 
Tongue-tied people often mouthbreathe and can suffer from many myofunctional problems and symptoms such as facial and jaw pain, headaches, clenching, and grinding. Studies show that children with tongue ties are more likely to develop sleep apnea and airway issues.
 
Most times, tongue tie is treated surgically by an experienced Dentist or Oral Surgeon. The procedure can be done with a laser or scalpel. It can be called a frenectomy, frenotomy, or frenuloplasty. Myofunctional therapy must be done before and after the procedure. After the procedure, a series of exercises will be prescribed to strengthen the muscle and prepare it for the new range of motion post-surgery. After surgery, myofunctional therapy is used to rehab the wound and work on proper function.

Maxillary or palatal expansion is applicable for patients who's upper jaw is too narrow compared to the lower jaw. Maxillary expansion is used to correct crossbites and also will create more space for crowded teeth. The expander appliance is attached to the molar teeth and is usually worn for 4-6 months.

Palatal expanders stimulate and guide the development of the upper mouth (upper palate) into its fully formed, natural setting. Gradually widening the upper jaw can result in several health benefits.

Individuals who undergo palatal expansion have a drastically reduced chance of orthodontic relapse. So, if you had braces, chances are you or your kids won't need them later in life, as palatal expanders will allow the teeth and palate to have the space required to set properly and permanently.

Although this may sound scary, it's pretty easy to do and tolerate. Until puberty, our jaws develop in two separate parts, fusing after puberty. However, even adults can benefit from the palatal expanders as they stimulate the release of growth hormones through repeated pressure on critical areas of the palate and allow for full development even in adulthood.

Short Answer: no. However, many people opt for lingual braces mainly because of the cosmetic appeal and the reasonable desire not to have traditional orthodontic hardware on their teeth. Palate Expanders are the same, but what they do is very different.

By practicing proper Orofacial-Myofunctional Breathing Exercises, patients can reverse years or even decades of bad habits and free them up to breathe like never before. If you are familiar with the old expression "take a few deep breaths," imagine taking that feeling of peace everywhere you go. Myofunctional Therapy utilizes the most up-to-date and scientifically backed breathing exercises to heal you, not just give a quick fix.