Surgical extraction of an impacted molar Growing state of patient is one of the factors when deciding what treatment is going to be used. For growing patients, decoronation is used. Decoronation is the removal of<unk>  crown. It serves as an alternative surgery for<unk>  extraction. It is recommended over extraction because it limits bone resorption and therefore maintains a sufficient growth of alveolar bone to enable<unk>  implantation . Decoronation can be carried out on both deciduous and permanent teeth. However, if the patient is too young and not close to puberty, decoronation should be postponed . In order to maximize the benefits of decoronation, regular monitoring and intervention are needed For non-growing patients, decoronation is generally not recommended because the growth of alveolar bone may be inadequate for a future<unk>  implant, and therefore is said to not give ideal treatment outcomes. As a result, other methods are considered when treating non-growing patients. Follow-ups are often being adopted in the cases of late onset<unk> . As<unk>  growth is insignificant, no surgical procedures are needed to treat the ankylosed<unk>  as long as its height difference with adjacent teeth is small. In some cases where the height difference is more significant,<unk>  crown build-up is recommended to restore occlusion. In addition to<unk>  crown build-up, ankylosed teeth repositioning is another conservative method. In surgical luxation, after the bridge of<unk>  is broken mechanically, the<unk>  is positioned slightly away from its original site and allowed to erupt with a temporary insertion of a splint or an orthodontic appliance.<unk>  repositioning can also be performed by osteotomy and distraction osteogenesis in cases where surgical luxation fails, or as alternatives. Extraction of an ankylosed<unk>  can be considered in both growing and non-growing patients. This method usually serves as a last resort when other methods such as osteotomy and distraction osteogenesis fail to treat<unk> . Growing state of patient is not the sole factor when deciding the treatment for an ankylosed<unk> . Infraocclusion severity, bone resorption, location of the target<unk>  as well as dentist's preference all affect the option for treatment. Therefore, treatment for an ankylosed<unk>  is case-specific.
Tooth ankylosis
Radial dysplasia
Metaphyseal dysplasia
Multiple epiphyseal dysplasia
Spinal stenosis
Carpal coalition
Fibrous ankylosis
Tarsal coalition