Search
Dr Catherine McGregor
Lyndhurst Dental Center
443 Lyndhurst Road
Lyndhurst Ontario Canada

 

Following a B.Sc. in Biology-Chemistry, Dr. McGregor graduated from Dentistry at McGill University in Montreal in 1974. She has completed extensive postdoctoral studies throughout North America with the leaders in the fields of craniofacial pain, jaw joint disorders, dentofacial orthopedics and sleep disordered breathing. You will receive a thorough examination with Dr. McGregor, who will take the time to explain her findings and refer to other health care practitioners as needed.
Dr. McGregor earned AACP Fellowship in 2007 in Fort Worth Texas (www.aacfp.org).            

Tuesday
Feb262013

ADHD and Sleep Disorders in Children, with Dr. Catherine McGregor, Dentist in Lyndhurst and Ontario, Canada

There has been an increase with giving children the diagnosis of ADHD, or attention deficit hyperactivity disorder and Dr. Catherine McGregor believes most of these children are being unfairly labeled.  A dentist in Lyndhurst, Ontario, Canada with Lyndhurst Dental and the TMJ & Sleep Therapry Centre, she says children who are often given the diagnosis of ADHD have a sleep disorder.

Adults with sleep apnea are often tired the next day.  Children, Dr. McGregor says, are hyperactive when overly tired.  Also, it is not normal for a child to snore, so parents will often hear this as one of the first signs.  Additionally, parents can also hear their child grind their teeth at night, another sign of sleep apnea, along with extending their head to open their airway while asleep. 

Dr. McGregor says that children with sleep apnea will also have poor behavior at school, frequent ear infections and bedwetting.

Dr. Catherine McGregor is a dentist with Lyndhurst Dental in Lyndhurst Ontario Canada and the TMJ and Sleep Therapy Centre of Eastern Ontario.  Dr. McGregor is also a leading sleep expert with Sleep Better TV.

Monday
Oct292012

Symptoms and Health Effects of Sleep Apnea, with Dr. Catherine McGregor of Lyndhurst Dental and the TMJ and Sleep Therapy Centre in Ontario, Canada

A bed partner can often give clues as to a sleep disorder, which include snoring, a cessation of breathing and a gasping and choking sound, which is one of the more serious symptoms of sleep apnea.  The person will say that they always feel tired, their memory is foggy and men might present with impotence, according to Dr. Catherine McGregor of Lyndhurst Dental and the TMJ & Sleep Therapy Centre in Ontario, Canada.

During proper sleep, Dr. McGregor says that our body produces nitric oxide, which is essential for cardiovascular health, including blood vessels.  If a person is sleeping properly, there is a lesser incidence of blood pressure problems and cardiovascular issues and in the case of men, less chance of impotence, notes Dr. McGregor.

When a person has sleep apnea, there is increased gastric reflux, says Dr. McGregor, and that when a person is gasping for air, it creates a "toilet plunger" effect that draws up acid from the stomach into the esophagus that creates a heartburn effect.

Another problem a person may exhibit when they have a sleeping disorder is diabetes and according to Dr. McGregor, when a person has trouble maintaining their blood sugars, they may have undiagnosed sleep apnea.  Having poor sleep can disrupt a person's ability to control their blood sugar and it is important both are recognized and are treated in tandem, she notes.

Weight management is another negative health effect of a sleeping disorder, says Dr. McGregor.  During sleep, our body secretes two hormones that help regulate hunger and weight control, and without proper sleep, these hormones aren't produced, leading to poor weight management.

Dr. McGregor says that is important to look at all of the symptoms and the "why" of sleep apnea, and how they all "individually but collectively point to the possibility" that the person may have sleep apnea.  She says that a dentist's role can be very important in the screening and pick up on some of the signs and work with medical professionals to get the person properly diagnosed.

Dr. Catherine McGregor is a dentist with Lyndhurst Dental in Lyndhurst Ontario Canada and the TMJ and Sleep Therapy Centre of Eastern Ontario.  Dr. McGregor is also a leading sleep expert with Sleep Better TV.

Monday
Oct292012

TMJ Disorders and Treatment, with Dr. Catherine McGregor of the TMJ & Sleep Therapy Centre in Ontario, Canada

TMJ refers to the anatomical temporomandibular joint and it is the relationship between your lower jaw that moves and the temporal bone of your skull, according to Dr. Catherine McGregor of the TMJ and Sleep Therapy Centre in Ontario, Canada.  Ideally, she says, these two anatomical parts are functioning in harmony and there is good disc space between the jaw joint that moves and the head that is stationary.

There can be a variety of problems with this unique joint, as this is the only joint that has one bone and two actual joints.  There can be an extracapsular problem, where there is muscle dysfunction or an intracapsular problem, where the disc is out of position, says Dr. McGregor and this type of patient may present with muscle and facial pain, severe headaches, limitation of jaw opening, jaw locking and a clicking and popping noise.

At the TMJ & Sleep Therapy Centre, Dr. McGregor uses a very conservative treatment when a patient presents with an intracapsular TMJ problem.  Using a two orthotic decompression therapy, two different orthotics are used - one for daytime function and one for nighttime rest.

In treating a patient with a TMJ problem with decompression therapy, the first appliance is worn during the daytime, to help decompress the jaw while in function.  Dr. McGregor says this is the most important part of treatment and is an orthopedic correction, which puts the joint in the right position so that the ligaments, tendons and muscles can all heal around the joint.  To help protect this joint at night while it's healing, Dr. McGregor uses a night orthotic that allows the jaw to rest but not go back and compress the area that's being healed in the daytime.

Success of treatment depends on proper diagnosis and that's where Dr. McGregor puts all of her energy. At the TMJ & Sleep Therapy Centre, they prioritize a person's symptoms to make sure they diagnose the cause of the problem.  Success also depends on the person's ability to heal, as well, she adds.

After 10-12 weeks of orthotic treatment, Dr. McGregor performs an MMI exam, or Maximum Medical Improvement, and about 75% of her patients can successfully wean off of their orthotics.  The other 25% may need to maintain orthotic treatment and go into some sort of phase two treatment, which can involve some orthodontics.

Dr. Catherine McGregor is a dentist with Lyndhurst Dental in Lyndhurst Ontario Canada and the TMJ and Sleep Therapy Centre of Eastern Ontario.  Dr. McGregor is also a leading sleep expert with Sleep Better TV.

Monday
Oct292012

Pediatric Sleep Disorders with Catherine McGregor of the TMJ & Sleep Therapy Centre in Ontario, Canada

Ontario, Canada-based dentist Dr. Catherine McGregor is seeing an increase in children that present with ADD (Attention Deficit Disorder) or ADHD (Attention Deficit Hyperactivity Disorder), when a lot of those children aren't sleeping properly.  

When an adult has poor sleep, they exhibit daytime sleepiness and when children have poor sleep, it results in overtiredness, fussiness, crankiness and poor behavior, Dr. McGregor says.  She says that parents can hear loud snoring and teeth grinding at night and these children often perform poorly at school and can even have bedwetting problems.

Dr. McGregor says that when these children present at her dental practice, Lyndhurst Dental and the TMJ and Sleep Therapy Centre, they often have a hard time tolerating something as simple as a dental mirror in their mouth and have a difficult time with teeth cleaning.  This is because they have difficulty breathing and are actually choking, as some children have a nasal obstruction from large adenoids, she adds.

Children who have been diagnosed with ADD or ADHD are often on strong stimulant medications and need a sedative to get to sleep, says Dr. McGregor.  In these cases, she feels the "why" hasn't been addressed and some children need surgical intervention or an orthodontic referral to widen the palate and drop the nasal airway to create a better airway.

If the lack of airway and lack of sleep goes untreated, pediatric sleep disorders can lead kids to be unfairly labelled as troublemakers and poor school performance, according to Dr. McGregor.  She adds that is very important to look at these children and do an adequate examination and diagnosis to identify the sleep disorder to avoid having these children develop severe sleep apnea as adults.  Dr. McGregor feels this is one of the most important things a dentist can do, as it is "actually changing the child's life."

Dr. Catherine McGregor is a dentist with Lyndhurst Dental in Lyndhurst, Ontario Canada and the TMJ and Sleep Therapy Centre of Eastern Ontario.  Dr. McGregor is also a leading sleep expert with Sleep Better TV.

Tuesday
Oct232012

Diagnosing Sleep Apnea, with Dr. Catherine McGregor of Lyndhurst Ontario, Canada

Sleep apnea is the cessation of breathing during the time a person is asleep.  It can be a total obstruction of breathing, which is the typical definition of sleep apnea, and it can also be partial interruptions of breathing, both of which are quite serious and interrupts the person's ability to get into a deep sleep to get the restorative sleep they need, says Dr. Catherine McGregor, dentist in Lyndhurst, Ontario, Canada.

A dental office is ideal for screening a person who might have sleep apnea as often, a person is not aware they have a condition, Dr. McGregor says.  At her dental practice, Lyndhurst Dental and the TMJ & Sleep Therapy Centre, she reviews the patient's medical history to see if they have a prescription history of more than one anti-hypertensive medication and to see if they have diabetes.

In addition to a medical history, Dr. McGregor reviews the sleep questionnaire she provides her patients and a patient may check off that they've been told they snore, that they stop breathing during sleep, wake up several times at night or have daytime fatigue - all of which are indicative that there may be a sleep breathing disorder.

Sleep apnea can be screened or diagnosed in a couple of different ways.  Typically, says Dr. McGregor, the official way is to see a medical person in a sleep lab and have a full polysomnogram.  In her office, she will "fast track" someone she thinks has a serious problem by doing a home sleep study.  In Ontario, where her dental practice is based, the waiting times for testing in a sleep lab can sometimes be long.  She will especially recommend home sleep testing if a person has already had a sleep breathing disorder diagnosis.  Dr. McGregor looks for a baseline score to treat them with an oral sleep appliance.

Typically, by definition, only medical personnel can do the actual diagnosis of sleep apnea, says Dr. McGregor, so she works very closely with her medical colleagues in sleep labs.

Dr. Catherine McGregor is a dentist with Lyndhurst Dental in Lyndhurst Ontario Canada and the TMJ and Sleep Therapy Centre of Eastern Ontario.  Dr. McGregor is also a leading sleep expert with Sleep Better TV.