For a smile that looks great and stays healthy, come to the Markham-area clinic of Dr. Lui Perry Y M. Our orthodontic treatments include braces and Invisalign®, so depending on your needs, we will discuss what your options may be. For children and adults facing problems such as over-bite, under-bite or misalignment, Dr. Lui is here to help. Call today to schedule an appointment at our dental clinic. more... See more text