31/55. External resorption of a maxillary lateral incisor by a labially placed canine: pathology and management. A case is presented showing external resorption of a maxillary lateral incisor associated with a labially placed canine. The histological appearance and differential diagnosis is discussed, and the treatment described. ( info) |
32/55. Idiopathic resorption of teeth. A report of three cases. External resorption of teeth is a condition typically associated with etiologic factors within the adjacent alveolar bone, such as chronic periapical or periodontal infections, neoplasms, erupting permanent teeth, orthodontic movement, or trauma to the jaws. When none of these causes are present, resorption of teeth at the cementoenamel junction has been termed "idiopathic resorption of teeth." Three cases of idiopathic resorption of teeth are reported, the literature on previous cases is reviewed, and hypotheses as to causes and a new theory are postulated regarding the possible mechanism for osteoclastic resorption of teeth. ( info) |
33/55. Treatment of ectopically erupting maxillary permanent first molars with a distal extended stainless steel crown. The exaggerated mesial eruption of the permanent first molar can result in the tooth becoming impacted, or the premature atypical resorption and exfoliation of the primary molar, with a resultant loss of space. A stainless steel crown with a distal guide plane was placed on a primary molar to correct the aberrant eruption angle of the permanent tooth. This procedure can be used successfully for both partially and totally tissue-impacted teeth, and is described in this report. ( info) |
| A case report of a two-stage canine transplant is presented in which circumstances appeared ideal for success. Storage of the tooth in a buccal pouch for six months precipitated extensive crown and root resorption. The prognosis for this approach to treatment of impacted canines indicates caution in its use. ( info) |
35/55. Incomplete resorption of resorbable zinc oxide root canal fillings in primary teeth: report of two cases. Two cases in which all of the zinc oxide canal filling did not resorb are described. The histories emphasize the importance of careful monitoring of treated primary teeth. The cases described were monitored for more than five years. ( info) |
36/55. Central odontogenic fibroma. A case report. A case of central odontogenic fibroma is reported. The clinical, radiological and pathological features are discussed. It is of particular interest because of its maxillary location and the severe external root resorption associated with the tumour. ( info) |
37/55. Clinical observations regarding the treatment of traumatically avulsed mature teeth. Part 2. Two documented cases involving avulsions of an incisor and a cuspid are reported. Long-term observations following replantations indicated factors in addition to those reported in Part 1 of this study. Endodontic metallic implants may retard the intrusive process. A fixed-bridge splint also appears to have retarded the ankylosis phenomenon. The three case reports in the two parts of this study indicated that splint time may not be a critical factor in the prognosis of replanted teeth. calcium hydroxide failed to prevent early root resorption and eventual ankylosis in an early replantation case; the other two cases, with longer replant time, fared better without calcium hydroxide. Endodontic treatment of avulsed teeth soon after replantation is suggested; a time period of several weeks does not appear critical to the prognosis. Removal of the apical root segment prior to replantation does not appear to affect the replacement root resorption process. The reporting of long-term documented cases should be encouraged in order that replantation techniques may be evaluated. ( info) |
38/55. Cervical resorption in bleached teeth. A case of cervical resorption in a bleached, pulpless tooth is reported. The tooth has not been traumatized, and no other reason for the resorption could be found except the possible effects of a caustic bleaching agent. This case further supports the evidence in the literature that a cause-and-effect relationship exists between Superoxol bleaching and cervical resorption. ( info) |
| A case is reported in which considerable external resorption of the crown of a lateral incisor occurred during storage in a buccal pouch. ( info) |
40/55. External cervical resorption after bleaching a pulpless tooth. A tooth with cervical resorption possibly caused by an internal bleaching technique was treated with calcium hydroxide. This case had characteristics in common with the other seven cases that have been described in the literature. Several possible treatment methods are discussed, along with the speculation that internal bleaching of tetracycline-discolored teeth may lead to cervical resorption. ( info) |