Accuracy of Computer Guided Implant Surgery

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

25 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-07-31

Study Completion Date

2016-01-31

Brief Summary

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The investigators' aim is to evaluate the accuracy of the stereolitographic template comparing the final implant insertion to the planned implant position at coronal and apical level.

Clinical relevance:

* To identify factors influencing the surgical template imprecision.
* To overcome risk factors for surgical template imprecision.
* To suggest improvements for highly accuracy of the surgical template especially for immediate loading and avoiding the injury of anatomical structures.

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Detailed Description

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Initial examination, panoramic radiograph to be performed and impression for stone models to be taken to all enrolled patients. For diagnosis accuracy, impression of the surgical site and the opposite arch is mandatory.

For fully edentulous and extensive edentulous subjects - Class III and IV according to the American College of Prosthodontists - ACP - a visible light cure record bases with occlusal rims will be manufactured for bite registration.

CBCT will be taken with a R2 tray filled with impression material or with record basis in centric relation (CR).

CBCT will be performed using same CT machine with a specific setup and alignment to allow accuracy and reproducibility.

A series of axially sliced image data will be obtained and exported to a personal computer in DICOM (Digital Imaging and Communications in Medicine) format.

Models, occlusal rims and R2 trays will be scanned and imported as STL (Stereo Lithography) files.

On the scan models, a virtual wax-up will be designed with the use of 3Shape CAD (Computer Aided Design) software and saved as STL file.

Matching CT and models scan data DICOM files obtained from CBCT and STL files will be imported in a treatment plan software R2GATE version 1.0.3 (Megagen Implant, Korea) and implant insertion will be planned according to the final restoration and bone anatomy.

AnyRidge Megagen implants will be used with length and diameters required by the clinical cases.

A stereolitographic template manufactured by DDX Europa, after final decision of treatment plan, will be used for dental implants insertion using a minimally invasive flapless approach.

To assess accuracy of the surgical template, a new CBCT with specific set-up and alignment after implant insertion will be performed.

Matching post-op CT with the planed position of the implants will be performed using the R2GATE software and measurements between the location of implants on CT at the time of planning and after implantation will be made at the coronal and apical levels to determine the distance between the implant and the planned position buccal, oral, mesial and distal by two independent researchers. Angulation between the implant position and the planned position at coronal and apical level will be also measured.

Statistical analysis will be performed. Teeth supported, mucosal supported and teeth-mucosal supported surgical stereolitographic template will be analyzed separately.

Conditions

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Jaw, Edentulous

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Blinding Strategy

NONE

Study Groups

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Stereolitographic template's accuracy

Evaluating the accuracy of stereolitographic template comparing the final implant insertion to the planned implant position at coronal and apical level

Group Type EXPERIMENTAL

Stereolitographic template

Intervention Type OTHER

Flapless (atraumatic) dental implants insertion with the aid of a stereolitographic template.

Interventions

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Stereolitographic template

Flapless (atraumatic) dental implants insertion with the aid of a stereolitographic template.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* fully or partially edentulous patients,
* good general healty with no contraindications for implant surgery,
* acceptance of dental implant treatment,
* acceptance of at least 2 CBCT (one at treatment planning and one after surgery)

Exclusion Criteria

* limited bone volume with stadial bone graft requirement,
* limited mouth opening (imposible to use the surgical stent),
* parkinson desease (imposible to perform an accurate CBCT)

Minimum Eligible Age

18 Years

Maximum Eligible Age

89 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes