Periodontal health of orthodontically extruded impacted teeth. A split-mouth, long-term clinical evaluation.

Background: Impaction of front teeth (often upper canines) can result in esthetic, functional, and phonetic problems, in addition to root resorption and chronic or acute infections. Most impacted front teeth can be extruded orthodontically after minor periodontal surgery. The purpose of this retrospective study was to examine the periodontal outcome of surgically exposed and orthodontically extruded impacted teeth compared with the spontaneously erupted contralateral teeth.

Predictability of a three-dimensional planning system for oral implant surgery.

Objectives: To compare 2D CT alone with 2D + 3D reconstruction for pre-operative planning of implant placement.

Methods: Spiral CT scans of 33 consecutive patients were used for both reformatted 2D and 3D computer-assisted planning. The number, site and size of implants and the occurrence of anatomical complications during planning and implant placement were statistically compared using the percentage agreement and the Kendall's correlation coefficients (tau).

Predictability of reformatted computed tomography for pre-operative planning of endosseous implants.

Objectives: To determine the reliability of reformatted 2D-CT for pre-operative planning of implant placement.

Methods: One hundred consecutive partially or fully edentate patients underwent 2-D reformatted CT pre-operative planning and subsequent implant placement. The number, site and size of the implants, the available bone height and anatomical complications were recorded.