Comparison of Results of Measurement of Dimensions of the Placed Dental Implants on Cone Beam Computed Tomography with Dimensions of the Producers of the Implants

Abstract

Introduction:One of the most frequently used method for scanning patients with indication for dental implantation in dentistry is cone beam computed tomography. Implantation, CBCT imaging and implant programme are inevitable when planning a successful replacement of lost teeth. CBCT offers exact information about available bone and its density, adjacent tooth roots, the place of mandibular canal and maxillary sinus and adjacent anatomical structure.Aim:The goal of this study is to estimate accuracy of measurements on CBCT images ofpatients who have implants of different producers and determine if there is any statistically significant correlation between four test groups regardless of the alloy of which implants are made.Material and methods:The study was a prospective-comparative, and included fifteen patients with hundred dental implants divided in four groups depending on the producer.Results:Over dimensioning in the gained measurements of the whole sample on CBCT images in relation to dimensions of producers is between 0.1006mm and 0.368mm. Even though over dimensioning is measured in millimetres, it has to be taken into consideration in clinical practice when planning an implant placement, and we can recommend safety zone of 0.5mm. There have been no statistically significant differences in the gained results in over dimensioning of implants of different alloys for horizontal and vertical measurements on CBCT images of Astra Tech, Brendet titanium implants and Straumann titanium-zirconium implants. Based on the goals of the study there have been confirmed statistically significant correlations of great value (from 0.841 to 0.936) of high level of importance between manufactured value of dimensions and average dimensions values gained through CBCT imaging in four types of implants (four test groups). The total exactness of measurements on CBCT scan in this research is 96.66% for horizontal measuring and 96.92% for vertical measuring. Therefore, we can conclude that CBCT as radiological method has an unavoidable importance in planning and successful realisation of dental implant procedure.Conclusion:Cone Beam Computed Tomography provides exact measurements of dimensions of placed dental implant in relation to dimensions of the producers of the implant because the material from which dental implants have been made does not significantly affect the precision of the measurement.

Mesiodistal Measurements for Dental Implant Planning: A Prospective Clinical Study of Linear Measurements on Cone-Beam Computed Tomography Images in Comparison with Caliper-Based Measurements on Plaster Casts

“…However, implants appeared slightly oval-shaped on axial views, and dark streaks appeared between implants on sagittal sections. CBCT measurements of dental implants of various brands inserted in the jaws of patients were compared with the real implant dimensions listed by the manufacturers [ 13 ]. Findings were unrelated to implant material (titanium or titanium-zirconium); horizontal dimensions on CBCT cross-sectional and sagittal views were 0.11 mm to 0.37 mm (3.34%) larger than the real implant size [ 13 ].…”

“…CBCT measurements of dental implants of various brands inserted in the jaws of patients were compared with the real implant dimensions listed by the manufacturers [ 13 ]. Findings were unrelated to implant material (titanium or titanium-zirconium); horizontal dimensions on CBCT cross-sectional and sagittal views were 0.11 mm to 0.37 mm (3.34%) larger than the real implant size [ 13 ]. For Straumann dental implants (the same brand used in the present study), horizontal measurements of the implant diameter on CBCT views were 0.11 mm larger than the real implant size.…”

“…Many implant-related CBCT publications are presurgical CBCT studies [ 3 ] focused on bone height and the width of the edentulous ridge, with the issue of measurement accuracy on CBCT images receiving considerable attention over the years. Phantom heads [ 4 ]; dry skulls and human cadavers [ 2 , 5 , 6 , 7 ]; porcine mandibles [ 8 , 9 ]; beagle dog mandibles [ 10 ]; virtual models [ 11 , 12 ]; and reference objects, such as implants [ 13 , 14 ], have been used to assess the accuracy of linear measurements on CBCT views. Some authors have stated that CBCT views enable accurate measurements [ 6 ], whereas other authors report underestimated [ 5 ] or overestimated CBCT measurements [ 8 ].…”

Evaluation of Different Preosteotomy Determinants as Affecting the Success of Implant Therapy: A “CBCT”-based Clinical Study

“…Their study results clearly showed that CBCT gives accurate dimensions of placed dental implant in relation to dimensions of the manufacturer of the implant. 20 They further stated that the material from which dental implants have been manufactured does not considerably affect the accurateness of the dimension. These finding were in accordance to our results as far as the selection of length and width of implants is concerned.…”

3D Morphological Processing for Wheat Spike Phenotypes Using Computed Tomography Images

“…As a non-invasive advanced imaging technology for high-resolution measurement of living tissue, CT provides inherent high-contrast resolution. It is able to distinguish tissues with physical density differences of less than 1% [31]. Modern optical 3D tomography and imaging techniques have been applied to reconstruct plant tissue in 3D for visualization and analysis, include plant vasculature [32], stem properties of sorghum [33], maize developing seeds [34] and plant root [35].…”