title: Exploring Effectiveness of Computer-Aided Planning in Implant Positioning for a Single Immediate Implant Placement.
abstract: The value of computer-aided implant planning using cone-beam computerized tomography (CBCT) for single immediate implants was explored. Eighteen patients requiring extraction of a tooth followed by a single immediate implant were enrolled. Small volume preoperative CBCT scans were used to plan the position of the implant. A taper screwed-type implant was immediately placed into a fresh socket using only the final 1 or 2 drills for osteotomy. Postoperative CBCTs were used for the analysis of actual implant placement positioning. Measurements of the planned and the actual implant position were made with respect to their position relative to the adjacent teeth. Mesio-distal displacements and the facial-lingual deviation of the implant from the planned position were determined. Changes in the angulation of the planned and actual implant position in relation to the clinical crown were also measured. To statistically summarize the results, box plots and 95% CIs for means of paired differences were used. The analysis showed no statistical difference between the planned position and final implant placement position in any measurement. The CBCT scans coupled with the computer-aided implant planning program along with a final 1-to-2 drill protocol may improve the accuracy of single immediate implant placement for taper screwed-type implants.
authors.affiliation: 1   School of Dentistry, University of North Carolina, Chapel Hill, NC.
authors.forename: Alexander R
authors.initials: AR
authors.lastname: Edelmann
authors.affiliation: 2   Department of Endodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC.
authors.forename: Bashir
authors.initials: B
authors.lastname: Hosseini
authors.affiliation: 1   School of Dentistry, University of North Carolina, Chapel Hill, NC.
authors.forename: Warren C
authors.initials: WC
authors.lastname: Byrd
authors.affiliation: 3   Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC.
authors.forename: John S
authors.initials: JS
authors.lastname: Preisser
authors.affiliation: 4   Department of Diagnostic Sciences, School of Dentistry, University of North Carolina, Chapel Hill, NC.
authors.forename: Donald A
authors.initials: DA
authors.lastname: Tyndall
authors.affiliation: 5   Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC.
authors.forename: Tung
authors.initials: T
authors.lastname: Nguyen
authors.affiliation: 6   Department of Prosthodontics, School of Dentistry; and Department of Pharmacology, School of Medicine, University of North Carolina, Chapel Hill, NC.
authors.forename: Sompop
authors.initials: S
authors.lastname: Bencharit
mesh_terms: D054893:Cone-Beam Computed Tomography; D003758:Dental Implantation, Endosseous; D006801:Humans; D012984:Software; D025321:Surgery, Computer-Assisted
keywords: computer-aided implant planning; immediate placement; immediate restoration; implant positioning