Idiopathic ankylosis-resorption: Diagnosis and treatment

Ankylosis of Permanent First Molar: Diagnosis by Cone Beam Computed Tomography

“…Studies on diagnosis of ankylosis using CT are limited (Kitai et al, 2003;Kirziolu et al;Paris et al;Chae & Paeng;Gault et al) and even more using CBCT (Balaji;Tsukiboshi & Tsukiboshi, 2014). However, for identifying the root region extent and exact location where ankylosis is present, the examination by three-dimensional imaging is essential (Paris et al; Gault et al; Silva), especially in severe cases of ankylosed molar teeth (Berl et al, 2012).…”

“…Traumatic lesions are considered the main factor for development of ankylosis (Atobe et al, 2009;Cohen-Levy et al;Chae & Paeng;Gault et al, 2013;Lin et al;Mohadeb et al;Silva). Moreover, these are also considered causal factors: metabolic disorders, local deficiency in vertical alveolar bone growth (Atobe et al; Loriato et al; Cohen-Levy et al; Alves et al; Parisay et al; Lin et al; Guimarães et al), failure of eruption force (Alves et al), genetic factors (Atobe et al; Cohen-Levy et al; Chae & Paeng; Lin et al; Guimarães et al; Silva), focal inflammation/infection, chemical/thermal irritants (Cohen-Levy et al; Gault et al; Parisay et al; Silva), and soft tissue pressure (Atobe et al; Cohen-Levy et al).…”

“…Primary diagnosis of ankylosed teeth is made by clinical assessment through mobility and percussion tests, in these cases the tooth makes a metallic sound (Campbell et al, 2005;Lim et al, 2008;Berl et al, 2012;Gault et al;Lin et al;Mohadeb et al;Silva), unlike healthy teeth, in which the sound is neutralized by periodontal ligament (Berl et al, 2012;Parisay et al;Silva).…”

“…Although periapical x-rays are daily used in dental clinics, their value is limited for diagnosisof ankylosed teeth (Paris et al, 2010;CohenLevy et al;Berl et al, 2012;Cha et al, 2012;Gault et al;Lin et al;Mohadeb et al), because ankylotic areas only visible when it is present in proximal surfaces of the root, not being possible to identify lingual/palatal and buccal surfaces (Takahashi et al;Cohen-Levy et al;Berl et al 2012;Silva et al). Besides, in this examination the presence of ankylosis becomes evident only when at least 20 % of the root surface is affected (Campbell et al; Cohen-Levy et al; Mohadeb et al).…”

Effectiveness of decoronation technique in the treatment of ankylosis: A systematic review

“…Dental/dento-alveolar ankylosis refers to an anatomical fusion of cementum with alveolar bone, occurring at any time during the course of eruption (1). Although traumatic injuries to teeth (intrusion, extrusive, or lateral luxation) have been suggested as the primary etiological factor for developing ankylosis (2), yet idiopathic forms of this type of fusion have also been identified (3). Severe trauma to the tooth root will cause damage to PDL fibers, resulting in an inflammatory process.…”