The term open bite means no contact between anterior or posterior teeth . It is one of the most commonly found malocclusions in dental practice. Open bite can either be skeletal or dental. Dental open bites can be easily corrected by orthodontic therapy or by using myofunctional appliances. Occlusal rehabilitation also plays a major role in correcting dental open bite. Skeletal open bite require orthognathic surgical intervention.

Causes of open bite:

  1. Tongue thrusting
  2. Thumb sucking
  3. Pencil biting
  4. Mouth breathing
  5. Lower lip sucking
  6. Excessive use of pacifiers and bottle milk.

Importance of correction of open bite:

  1. Esthetics
  2. Speech
  3. To prevent TMJ disorders.

The curvature of incisal edges of maxillary incisors and canines to the curvature of lower lips defines as an ideal smile of the patient. Open bite does not meet to this ideal smile. Proper occlusion helps in adequate mastication, speech and esthetics maintaining the integrity and longevity of the tooth.

Occlusal rehabilitation is one of the most common treatment options practiced for correction of open bite. OR is selective grinding of teeth for adjusting occlusion and for efficient chewing of food without hampering the masticatory function of an individual. According to the BULL’s law, upper of buccal and lingual of lower cusps are the functional cusps which are to be spared during occlusal grinding. Hence non functional cusps are grinded in order to correct mild cases of open bite.