Three-Dimensional Evaluation of Implant Bed Preparation and the Influence on Primary Implant Stability After Using 2 Different Surgical Techniques.
OBJECTIVE
Surgical techniques affect primary implant stability, which is required for osseointegration. The aim of this study was to investigate the influence of full-guided surgery on the dimension of implant site in relation to primary stability.


METHODS
After implant site preparation in artificial bone by full-guided (FG) or non-guided (NG) workflows to create final diameters of 3.3, 4.1, and 4.8mm and depths of 8 or 12 mm, computed tomograms were obtained and the volume of the osteotomies was analyzed 3 dimensionally. After comparing implant insertions, the implant stability quotient (ISQ) was measured by resonance frequency analysis (RFA).


RESULTS
Volume analysis of the implant site showed significant differences (P < .0001) between surgical procedures (FG vs NG) at a depth of 12 mm for all diameters (3.3 mm, 61.98 ± 5.84 vs 80.96 ± 9.65 mm(3); 4.1 mm, 107.45 ± 6.91 vs 132.07 ± 5.16 mm(3); 4.8 mm, 158.62 ± 10.21 vs 182.00 ± 6.25 mm(3)) and at a depth of 8 mm for diameters of 4.1 mm (71.76 ± 8.38 vs 83.64 ± 7.54 mm(3)) and 4.8 mm (103.84 ± 6.73 vs 120.55 ± 14.63 mm(3)). RFA showed significant differences for implants with a diameter of 4.8 mm and lengths of 12 mm (ISQ, 69.3 ± 4.09 for FG vs 65.05 ± 5.61 for NG; P = .0007) and 8 mm (64.5 ± 4.16 for FG vs 58.85 ± 6.72 for NG; P = .0107).


CONCLUSIONS
The use of FG implant surgery decreases the bone volume removed during osteotomy preparation, which can lead to greater primary stability.
Research Assistant, Department of Oral and Maxillofacial Surgery, RWTH Aachen University, Aachen, Germany. Electronic address: smoehlhenrich@ukaachen.de.
Stephan Christian
SC
Möhlhenrich
Researcher, Department of Medical Statistics, RWTH Aachen University, Aachen, Germany.
Nicole
N
Heussen
Senior Physician, Department of Diagnostic and Interventional Radiology, RWTH Aachen University, Aachen, Germany.
Christina
C
Loberg
Research Assistant, Department of Oral and Maxillofacial Surgery, RWTH Aachen University, Aachen, Germany.
Evgeny
E
Goloborodko
Professor and Chair, Department of Oral and Maxillofacial Surgery, RWTH Aachen University, Aachen, Germany.
Frank
F
Hölzle
Senior Physician, Department of Oral and Maxillofacial Surgery, RWTH Aachen University, Aachen, Germany.
Ali
A
Modabber
D003758:Dental Implantation, Endosseous / Q000379:methods*; D017268:Dental Prosthesis Retention; D021621:Imaging, Three-Dimensional; D016348:Osseointegration; D014057:Tomography, X-Ray Computed / Q000379:methods