Further evaluation revealed that teeth 9 and 10 had become ankylosed
This was most likely the case for tooth 46, where the tooth was transiently ankylosed but regained its potential to erupt.
Orthodontic management of ankylosed permanent posterior teeth: A clinical report of three cases.
Treatment of ankylosed mandibular first permanent molar.
40) Mansat and Morrey reported on 14 Coonrad-Morrey semiconstrained total elbow arthroplasties (nine performed for ankylosed elbows).
Mansat P, Morrey BF: Semiconstrained total elbow arthroplasty for ankylosed and stiff elbows.
Applying orthodontic forces to these teeth is likely to lead to intrusion of other normal teeth within the arch as the abnormal tooth becomes ankylosed [Raghoeber et al.
Surgical luxation of the ankylosed permanent teeth has been proposed as an alternative to premature extraction and other treatment options [Proffit and Vig, 1981].
The ankylosed infra-erupted primary tooth has stopped its vertical movement relative to others along the occlusal plane such that marginal ridges are not at the same height as adjacent teeth [Noble et al.
The true aetiology of ankylosed primary molar teeth remains unknown although trauma and genetics may be significant factors [Kurol, 1984].
The reported frequency of ankylosed infra-erupted teeth ranges from 1.
retained teeth were not removed, as very limited residual bone would have remained for later implant installation.
There is an increased degree of osteoblastic and osteoclastic activity with ankylosed teeth, as compared to normal teeth; and in favourable circumstances, the attachment of the affected tooth to the underlying tissues may be resolved and the tooth shed normally [Dixon, 1963; Thornton and Zimmerman, 1964].
Luxation to free ankylosed permanent teeth has been attempted with limited success [Krakowiak, 1978] and as such is not generally recommended.
The tendency of ankylosed maxillary molars (case 2) to be severely infraoccluded usually indicates early extraction [Kurol and Koch, 1985].