They credited this change to a change in the posterior positioning of the tongue due to the crib therapy.Some of the side-effects of using a tongue-crib therapy is that this appliance may trap food,  causing inflammation around the appliance. Repeated contact of the tongue with the appliance may lead to an imprint on the tongue which will self-resolve when the appliance is removed. It is important to note that this type of therapy will only work in patients who do not have a skeletal open bite tendency. A skeletal open bite tendency may be addressed via surgery or other treatment. Blue Grass appliance
Its a type of appliance which is similar to Nance appliance, but instead of acrylic pad that rests on the anterior palate, this appliance has a plastic roller that patient can use their tongue to break their habit. This appliance is banded to the upper 1st molars and bars extend the appliance to anterior palate where the plastic roller is placed. Vertical pull chin cup
Hakan Iscan and others used vertical pull chin cup in 17 patients for 9 months where they applied 400g of force on each side. Compared to controls, they found that patients included in the experimental group had increased eruption of the mandibular incisors, decrease of the ramal inclination, decrease of the mandibular plane, increase of the overbite, decrease of the gonial angle and increase of the mandibular corpus inclination were found. They stated that vertical chin cup maybe effective in treating skeletal open bite patients. However, Pedrin et al.
Bite blocks
R. Kuster and B. Ingerval in 1992, used two types of bite blocks to evaluate their effect on skeletal open bite patients. One group of patients had spring-loaded bite block for one year and other group had repelling magnets as bite blocks for 3 months. Both type of bite blocks exerted intrusive force on both upper and lower posterior teeth. They saw 3mm improvement in overbite with magnet group and 1.3mm improvement in overbite with spring-loaded group. They concluded that this effect resulted due to counter-clockwise rotation of mandible which was caused by intrusion of posterior teeth and increased eruption of incisors. Glossectomy
There are not systematic reviews or randomized clinical control trials related to correction of open bite with partial tongue glossectomy but several case reports have been published indicating successful treatment of open bite with this surgical approach. Macroglossia has been reported to cause open bite and bimaxillary protrusion and is also known to be make orthodontic treatment unstable after its completion. Orthognathic surgery
An orthognathic surgical approach can be taken to correct an open bite once vertical growth has finished in male and female patients. At that time, a Le-Fort I osteotomy to impact the maxilla is usually done. According to Proffit et al., surgical movement that involves maxillary impaction is the most stable surgical movement in the hierarchy they established. A two jaw surgery can also be performed where Bilateral Sagittal Split Osteotomy can be done to correct any Antero-Posterior changes of the mandible.