3 Most Common Types of Tooth Misalignment


A malocclusion occurs when there is a misalignment of the teeth, this includes crossbite, overbite, underbite, open bite, and crowding of the teeth. The three most common types of teeth malocclusions are as follows, neutorclusion, distocclusion, and mesioclusion. An orthodontist in Edmonton is able to determine when a patient is suffering from a malocclusion and the type. This article will discuss the three malocclusion classes and their subtypes.

Class 1: Malocclusion- Neutroclusion

This occurrence of neutroclusion is the most common and most patients tend to fall into this category. Neutroclusion occurs when a patient’s upper teeth overlap their lower teeth, but the lower molars are in normal positioning. Characteristics of this include, dental crowding, overlapping, cross bites and rotations. Although the upper and lower molars are in normal positioning and the cusp of the upper first molars rest properly in the groove of the lower, neutroclusions do result in spacing, overcrowding and over or under eruption of the teeth. The following are the three subtypes of neutroclusions:

Subtype 1: The displacement of a tooth to the lingual side of its normal occlusion. The dentition is in linguoversion – which is the displacement of a tooth to the lingual side of its proper occlusal position.

Subtype 2: Narrow arches and labioversion, maxillary anterior teeth, and mandibular anterior teeth are in linguoversion characteristics. There is a malposition of the anterior tooth from the normal curve of the arch.

Subtype 3: The relationship between the mandible to the maxillae is used to characterize this subtype. There is a blockage caused by the cusp of the permanent maxillary first molar mesiobuccal that blocks the buccal groove of the permanent mandibular first molar.

Class 2: Malocclusion- Distocclusion

This malocclusion is most popularly referred to as a retrognathism, which is a type of malocclusion which refers to abnormal posterior positioning of the maxilla or mandible, particularly the mandible, relative to the facial skeleton and soft tissues. Your orthodontist in Edmonton will identify a jaw growth discrepancy and a large overjet. During this occurrence, there is obvious overlapping of the upper teeth, lower teeth, and jaw. The upper molars are also shifted forward in proportion with the lower molars. 1 to 3mm is considered a normal overjet range and anything above this is not within normal limits. In the case of distocclusion the front teeth may protrude or the back teeth will overlap the central teeth. The two subtypes of a distocclusion are as follows:

Division 1: The relationship between the molars is the same as class two. An Orthodontist in Edmonton characterizes this by a protruding of the anterior teeth.

Division 2: The relationship between the molars is the same as class two. There is overlapping of the lateral teeth and the central part is also retroclined – which is the condition of being inclined backward.

Class 3: Malocclusion- Mesioclusion

This type of malocclusion is also referred to as prognathism; where either of the jaws protrudes beyond a predetermined imaginary line in the coronal plane of the skull. This occurs when the lower front teeth are more prominent in proportion to the upper front teeth. When an Edmonton orthodontist diagnoses this, the patients will have either a large lower jaw or a short upper jaw. This causes teeth misalignment and because of this, the lower incisors will tend to touch the gingival tissue of the upper arch of the jaw.

In addition, patients do suffer from an open bite and a deep bite. In the occurrence of an open bite, the patient has a long face or has the tendency to suck their thumb or tongue thrusting occurs. In terms of a deep bite, the patient has a short face and the molars are undeveloped. Seeking the help of a skilled Edmonton orthodontist can determine a patient’s specific case and rectify the issues caused by malocclusion.