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PubMedDate not supplied

[Transformation of a lateral incisor to a central incisor with a ceramometal crown].

To change a maxillary lateral incisor into a central incisor by using a ceramo-metallic crown, it is required to schedule a rational plan of treatment. All the different pre-prosthetic (orthodontic, periodontic, and endodontic) and prosthetic steps are described and justified. In order to achieve a compromise between esthetic and a stable periodontium the mesial profile of emergence of the ceramic should be conceived to prevent any overcontour.

Crowns↗
PubMed1994

Case report: twin supernumerary maxillary central incisors, unerupted maxillary central incisors. Early orthodontic treatment in ten-year-old child.

This is the case report of a 10 year-old female Caucasian with a mixed dentition Class I right and Class II left side malocclusion and unerupted maxillary central incisors. It was necessary for the oral surgeon to remove twin supernumerary mesiodens prior to the placement of orthodontic appliances. Space was created to accommodate the customary, also unerupted central incisors, which were rotated 90 degrees to the midline.

Child↗
PubMed2002

Survival rate and fracture strength of incisors restored with different post and core systems and endodontically treated incisors without coronoradicular reinforcement.

This in vitro study evaluated the survival rate and fracture resistance of maxillary central incisors restored with different post and core systems. The post and core systems investigated were a prefabricated high precious metal post with cast core (group A), zirconia post with a prefabricated bonded ceramic core (group B), and a resin-ceramic interpenetrating phase composite post (experimental) with a prefabricated bonded ceramic core (group C). The all-ceramic copings were cemented using Panavia 21 TC. In the group without coronoradicular reinforcement, the access cavity was closed with a light-cured composite in combination with a dentine-bonding agent (group D). Each specimen was intermittently loaded and thermocycled before final stress tests in a Zwick machine. The survival rates after 1,200,000 cycles in the artificial mouth were 90% (group A), 80% (group B), 60% (group C), and 100% (group D). Statistically significant differences were found between all groups with the exception of A and B, when failure during cyclic loading was included (Kruskal-Wallis multiple comparisons test). Samples restored with a cast post and core demonstrated more vertical root fractures. It was concluded that the preservation of both internal and external tooth structure is of utmost importance when restoring endodontically treated teeth.

Cementation↗
PubMed2005

Odontoma-like malformation in a permanent maxillary central incisor subsequent to trauma to the incisor predecessor.

This report describes a case of a patient (1 year and 8 months old) with traumatic avulsion of the maxillary right primary central incisor and morphological changes in the germ of the permanent successor. One year after the trauma, an odontoma-like malformation developed. This malformation was removed 6 years after trauma and orthodontic treatment was started. Clinical follow-up and periodic radiographs are necessary after traumatic avulsion of primary teeth to monitor possible sequelae in the permanent successor. An odontoma-like malformation requires a multidisciplinary approach.

Child↗