Using lead foil as a radiopaque marker for computerized tomography imaging when implant treatment planning

Urquiola, Javier; Toothaker, R.W.

doi:10.1016/s0022-3913(97)70242-7

Cited by 11 publications

(4 citation statements)

References 3 publications

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“…In the initial systems for the computer‐guided implant surgery planning, radiopaque scanned prostheses were used for image matching 20 . The scan prostheses were fabricated in a denture‐like form by duplicating the existing or interim dentures of the patients with radiopaque materials 21‐23 . The conventional method provides substantial restorative information related to implant treatment planning; however, in clinical situations, the imprecise positioning of the template on the edentulous ridge may occur during the optical scan and CBCT taking.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the Accuracy of Image Registration Methods for Merging Optical Scan and Radiographic Data in Edentulous Jaws

Woo

Mai

Lee

2020

Journal of Prosthodontics

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Purpose: The image registration of optical scans to radiographic images is essential for performing computer-guided implant surgery. This study aimed to evaluate the effect of different image matching conditions on the accuracy of image registration for computer-guided implant surgery in completely edentulous jaws. Materials and Methods: The optical scan image of a completely edentulous study model was registered to the respective cone-beam computed tomography data using three different image matching conditions: small point (SP), large point (LP), and entire surface (ES). For the SP and LP groups, gutta-percha markers (1.0 and 3.0 mm in diameter) were attached to a base template, and a radiopaque impression material was relined on the intaglio surface of template in the ES group. Image registration was performed by 20 operators in the images obtained from each group at an interval of 2 weeks (n = 20 in each group), and the registration accuracy was assessed by calculating the aligned position of the edentulous arch image. One-way analysis of variance with Tukey post hoc tests was used to compare the results among the groups (α = 0.05). Results: The mean registration error was significantly larger in the SP group (0.52 ± 0.19 mm) than in the LP group (0.29 ± 0.08 mm) and ES group (0.27 ±0.06 mm) (F = 24.689, p < 0.001). No difference was found between the LP and ES groups. The image matching discrepancy was more homogeneously distributed on the arch in the ES group than in the other groups. Conclusion: The accuracy of image registration is affected by the size of the congruent area shown in the optical scan and radiographic images. The entire surface-based matching method is more accurate as compared to the small point-based matching method in the image registration for implant planning in full edentulous jaws.

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Section: Discussionmentioning

confidence: 99%

Comparison of the Accuracy of Image Registration Methods for Merging Optical Scan and Radiographic Data in Edentulous Jaws

Woo

Mai

Lee

2020

Journal of Prosthodontics

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“…Dimensional accuracy of the in vitro study was confirmed in the in vivo study. 22. Extensive in vivo study should be the next step in the evaluation of the TSS.…”

Section: Discussionmentioning

confidence: 99%

“…2,7,24 A tomogram consists of two types of information: (1) Information from the image layer that provides a relatively sharp image with higher frequency and (2) information from outside the image layer that is blurred and demonstrates with a low frequency. 3,7,8,21,22,33 The information from the image layer is derived from the structures considered to be signals in the diagnostic task; information outside the image layer is considered to be noise. 3,11,14,19,20 With the current interest in implantology, there is an increased demand for cross-sectional imaging of the jaws.…”

Section: Introductionmentioning

confidence: 99%

Dimensional Accuracy and Details of the Panoramic Cross-sectional Tomographic Images: An in vitro Study

Kumar¹,

Mody²,

Nair³

et al. 2012

The Journal of Contemporary Dental Practice

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Introduction Transversal slicing system (TSS) of Planmeca PM 2002 CC is a tomographic technique which enables us to take cross-sectional views of jaws. Tomographic imaging modalities are commonly applied to acquire cross-sectional images of the jaws for preimplant assessment of bone. Among the available tomographic imaging modalities, panoramic radiography is the most accessible imaging system. Materials and methods Study was conducted using 25 mandibles, out of these five were used for linear dimensional accuracy measurement and the rest 20 were utilized to study the details within the mandible. Study was aimed to evaluate dimensional stability in the images using different parameters, such as determination of direction of slice, determination of horizontal and vertical magnification, angular distortion, threedimensional distortion and determination of details. Results For the direction of slice and for determination of horizontal and vertical magnification change in + 5° to – 5° was in acceptable limit. In determination of details, it was found that there was great discrepancy in readings given by nonradiologist which offset the mean value which was attributed to lack of training for interpretation of the observers. Conclusion 99% of the readings were in the clinically acceptable limits. Clinical significance The easy availability, use of routine equipment, the low cost, low radiation dose for cross-sectional radiography make the TSS most preferred modality. How to cite this article Kumar MA, Mody B, Nair GKR, Surender LR, Gopal SS, Prasad RVKA. Dimensional Accuracy and Details of the Panoramic Cross-sectional Tomographic Images: An in vitro Study. J Contemp Dent Pract 2012;13(1):85-97.

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“…A stent is an appliance used either for radiographic evaluation during treatment planning for assisting in determining the dimension, location and angulation of implant according to available bone, vital structures and proposed prosthesis, or during surgical procedures to provide optimum implants placement. [1][2][3][4][5][6][7][8][9] Prosthetically driven implant placement is best for simplification of abutment selection, ideal force distribution 10 and long-term success.…”

Section: Introductionmentioning

confidence: 99%

A Simple and Effective Technique to Fabricate Diagnostic and Surgical Stent

Kuniyal¹,

Vakil²

2010

IJOICR

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Prosthodontic rehabilitation of completely edentulous arch with implant supported prosthesis requires a stent, to evaluate the relationship between anatomical structures and to aid in implant placement for successful treatment result. The lengthy treatment procedure where the clinician has to duplicate the existing denture for stent fabrication has created a need for an improved simple and time saving technique. This article thus describes fabrication of a surgical stent with acceptable retention, stability and teeth arrangement using simple and time saving lab procedures.

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Using lead foil as a radiopaque marker for computerized tomography imaging when implant treatment planning

Cited by 11 publications

References 3 publications

Comparison of the Accuracy of Image Registration Methods for Merging Optical Scan and Radiographic Data in Edentulous Jaws

Comparison of the Accuracy of Image Registration Methods for Merging Optical Scan and Radiographic Data in Edentulous Jaws

Dimensional Accuracy and Details of the Panoramic Cross-sectional Tomographic Images: An in vitro Study

A Simple and Effective Technique to Fabricate Diagnostic and Surgical Stent

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