The use of multiplanar reformatted computerised tomography in the surgical-prosthodontic planning of implant placement.
Presurgical planning and communication between the prosthodontist and the surgeon is essential to achieve optimal placement of functional implants. Besides the basic clinical examination and the use of mounted study models, radiographic imaging is an essential adjunctive aid in treatment planning. The latest imaging modality, multiplanar reformatted CT (MPR-CT) is the most comprehensive and accurate presently available. It allows precise assessment of the three-dimensional architecture and internal anatomy of the jaws. This enables accurate preoperative evaluation for planning implant fixture placement with maximal use of bone. It's widespread use would prevent unsuitable cases from ever reaching surgery. MPR-CT is described in detail and its usefulness in treatment planning the dental implant case illustrated. Indications, contraindications, advantages and disadvantages will be discussed. The use of radiographic stents derived from diagnostic wax-ups or set-ups is essential. The incorporation of suitable radiographic markers provide both the surgeon and prosthodontist with reference points to determine the available bone at the exact spatial location and orientation of the planned implant fixture at all primary and alternate sites. The same radiographic stent is then converted to a surgical guide stent for precise location of surgical implant sites.
Tan
K B
KB
Department of Restorative Dentistry, National University of Singapore.
D003758:Dental Implantation, Endosseous / Q000379:methods*; D006801:Humans; D014057:Tomography, X-Ray Computed / Q000379:methods*