Preorthodontic dilacerated incisive crown modification in a pediatric patient: a case report.

Unlabelled: Dental dilacerations are abrupt deviations of the longitudinal axis of the crown or root portion of the tooth, caused by traumatic axial displacement of previously formed hard tissue in relation to the developing soft tissue.

Case Presentation: A 13-year-old boy in good general health was referred for root canal treatment of the maxillary left central incisor, for which abnormal crown morphology impeded orthodontic treatment. He presented bilateral crown dilaceration at both maxillary central incisors.

Retrospective study of the long-term survival of 980 implants placed in a periodontal practice.

Purpose: To assess the long-term behavior of 980 implants placed in a private practice and evaluate the influence of periodontitis history and smoking habit on implant survival rates.

Materials And Methods: A retrospective review of clinical records of consecutively treated patients with Astra Tech implants was conducted. This review included all patients treated between February 1994 and January 2005.