Lead to tooth opening and closing of the factors?

Opening and closing is less common in clinical practice, common in the permanent dentition period, refers to the middle position and combined together bits of non-middle, upper and lower part of the teeth together in the vertical to the non-contact, known as the opening and closing of deformity. So, the factors leading to tooth which open and close it?

1. Rickets

Rickets is a serious deformity of the important reasons has to open one before the big small wedge causing a wide range of open defects.

  

2. Genetic factors

Opening and closing of the factors leading to tooth may be formed in the open genetic abnormalities, but there are different views on this issue, there is controversy, need further study.

  

3. Mandibular third molar

The opening and closing of the factors leading to tooth impaction or level found in lean impacted, the chance to push the mandibular second molar to elongation, prominent in the plane, separated from the remaining teeth, if the factors associated with the tongue, the formation of dental supplies a wide range of open deformity.

  

4. Oral bad habits

Oral bad habits can affect the muscles of oral and maxillofacial dynamic equilibrium, resulting in open deformities, caused by bad habits about the cause of 68.7% of total open.

  

In the opening and closing of the factors leading to tooth bad oral habits, tongue habits are the most common cause of anterior open reason, because the tongue on both sides of the middle of thick, thin, spindle-shaped opening so the gap, often accompanied by jaw protrusion and scattered In addition, anterior gap thumb sucking habits such as biting things, different parts of the dentition can produce in the local small opening.