Common Problems

Common Problems

Class II

Class II problems represent an abnormal bite relationship in which the upper jaw and teeth are located in front of the lower jaw and teeth. Class II patients usually exhibit a convex facial profile with a recessed chin. In many cases this relationship is due to inherent. possibly genetic characteristics. A skeletal Class II problem occurs when the upper back molars are forward of the lower back molars, which gives the patient the appearance of a recessed lower jaw or an upper jaw that is protrusive or both.

class III

Class III problems are also, often, primarily genetic in origin. In this instance the lower jaw and teeth are positioned in front of the upper jaw and teeth. Facially, the appearance may give the impression that the lower jaw is excessively large, in many cases; however, the lock of upper jaw development is at fault. There are several treatment options to correct a Class III problem.


A posterior crossbite will usually result from a narrow upper jaw or abnormally wide lower jaw. A narrow upper jaw will often force a patient to move their lower jaw forward or to the side when closing into a maximum bite. When closed into accommodating position, the lower teeth are located outside the upper teeth. A posterior crossbite can involve one side or the jaw, known as a unilateral crossbite, or both sides of the jaw. known as a bilateral crossbite.


Crowding of the teeth is probably the most common orthodontic problem. Although many factors contribute to dental crowding, this problem typically stems from a discrepancy between space in each jaw and the size of the teeth. Oftentimes crowding can be just one of several orthodontic problems. Crowding can be the cause of, or the result of other problems such as impacted teeth, retained teeth or teeth that do not naturally fall out. A cross- bite of the front or rear teeth can also cause the teeth to become crowded. Lower crowding is probably the most common problem orthodontists see. Wisdom teeth can be one factor contributing to this. Frequently patients who have not worn their retainers after orthodontic treatment will experience tooth shifting. All these cases respond well to Invisalign® treatment. Extraction of teeth is rarely necessary- even in cases that appear severely crowded. Maybe the teeth have crowded because you didn’t wear your retainers. Possibly your wisdom teeth or other factors have contributed to your crowding. Usually these cases can be beautifully treated with a short course of Invisalign (often approximately 6 months) and usually without the need for tooth extraction {even though the crowding may appear severe).


Excessive vertical overlapping of incisor teeth called deepbite or “overbite” is generally found in association with a discrepancy between the length of the upper and lower jaws. It usually results in excessive eruption of either the upper or lower incisors or both. Associated problems include: 1) excessive display of gum tissue, 2) lip protrusion or entrapment, 3) biting the roof of the mouth and 4) incisor wear.

Excessive Gingival Display

Also known as a gummy-smile, this orthodontic problem gives the appearance of excessive exposed gums on the upper arch. There are several treatment options for this problem. A gummy smile most often can be greatly improved with good and proper orthodontic treatment – not needing any surgery at all. However, in some severe cases, surgery may be necessary to actually remove a section of the upper jaw shifting the jaw upward vertically reducing the amount of exposure of the upper-gum tissue.


An openbite can occur with the front teeth, known as anterior openbite or with the back teeth, referred to as a posterior openbite. An anterior openbite is the lack of vertical overlap of the front teeth and can usually be traced to jaw disharmony or habits such as thumb sucking or the thrusting of the tongue against the front teeth. A posterior openbite is a problem in which the back teeth do not meet vertically, prohibiting the jaw to function properly.


Spaces between teeth are another common problem associated with the need for orthodontic care. Like crowding, spacing may be related to a tooth-to-jaw size disharmony. Spacing may occur between the front and the back teeth. Tooth size discrepancies, such as smaller teeth or abnormally shaped teeth can also create abnormal spaces between the teeth.