The intrinsic error of a stereolithographic surgical template in implant guided surgery

The aimof this study was to evaluate the accuracy of a stereolithographic template, with sleeve structure incorporated into the design, for computer-guided dental implant insertion in partially edentulous patients. Materials and Methods Sixty-five implants were placed in twenty-five consecutive patients with a stereolithographic surgical template. After surgery, digital impression was taken and 3D inaccuracy of implants position at entry point, apex, and angle deviation was measured using an inspection tool software. Mann–Whitney U test was used to compare accuracy between maxillary and mandibular surgical guides. A p value < .05 was considered significant. Results Mean (and standard deviation) of 3D error at the entry point was 0.798 mm (±0.52), at the implant apex it was 1.17 mm (±0.63), and mean angular deviation was 2.34 (±0.85). A statistically significant reduced 3D error was observed at entry point p = .037, at implant apex p = .008, and also in angular deviation p = .030 in mandible when comparing to maxilla. Conclusions The surgical template used has proved high accuracy for implant insertion. Within the limitations of the present study, the protocol for comparing a digital file (treatment plan) with postinsertion digital impression may be considered a useful procedure for assessing surgical template accuracy, avoiding radiation exposure, during postoperative CBCT scanning.

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“…Other studies reported no difference [17, 29] or lower accuracy [30, 31] when the guide was used in mandible.…”

Section: Discussionmentioning

confidence: 99%

Accuracy Evaluation of a Stereolithographic Surgical Template for Dental Implant Insertion Using 3D Superimposition Protocol

Cristache

Gurbanescu

2017

International Journal of Dentistry

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“…However, errors between the planned and placed implant appeared in all systems of template-guided implant surgery, which caused various deviations 8,13,18. Studies that evaluated template-guided implants have been performed for decades but few studies have dealt with the errors of template-guided implant surgery in terms of causative factors that should be resolved for future widespread clinical use of the technique 19…”

Section: Discussionmentioning

confidence: 99%

“…Cassetta et al8 suggested that the potential mechanical (intrinsic) error is a more significant factor than the other variables that could affect the accuracy of template guided systems. The intrinsic errors affecting the accuracy were caused by the diameter and length of the guide sleeve of the template and the distance between the undersurface of the template and the targeted alveolar crest 22.…”

Section: Discussionmentioning

confidence: 99%

An assessment of template-guided implant surgery in terms of accuracy and related factors

et al. 2013

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PURPOSETemplate-guided implant therapy has developed hand-in-hand with computed tomography (CT) to improve the accuracy of implant surgery and future prosthodontic treatment. In our present study, the accuracy and causative factors for computer-assisted implant surgery were assessed to further validate the stable clinical application of this technique.MATERIALS AND METHODSA total of 102 implants in 48 patients were included in this study. Implant surgery was performed with a stereolithographic template. Pre- and post-operative CTs were used to compare the planned and placed implants. Accuracy and related factors were statistically analyzed with the Spearman correlation method and the linear mixed model. Differences were considered to be statistically significant at P≤.05.RESULTSThe mean errors of computer-assisted implant surgery were 1.09 mm at the coronal center, 1.56 mm at the apical center, and the axis deviation was 3.80°. The coronal and apical errors of the implants were found to be strongly correlated. The errors developed at the coronal center were magnified at the apical center by the fixture length. The case of anterior edentulous area and longer fixtures affected the accuracy of the implant template.CONCLUSIONThe control of errors at the coronal center and stabilization of the anterior part of the template are needed for safe implant surgery and future prosthodontic treatment.

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“…There is very little scientific data correlating implant dimensions and bone density with implant placement accuracy 25. In that study, a positive correlation between angular deviation of the implants and bone density was found.…”

Section: Discussionmentioning

confidence: 86%

Accuracy of mucosa supported guided dental implant surgery

Jones

2018

Clinical Case Reports

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The intrinsic error of a stereolithographic surgical template in implant guided surgery

Cited by 114 publications

References 15 publications

Accuracy Evaluation of a Stereolithographic Surgical Template for Dental Implant Insertion Using 3D Superimposition Protocol

Accuracy Evaluation of a Stereolithographic Surgical Template for Dental Implant Insertion Using 3D Superimposition Protocol

An assessment of template-guided implant surgery in terms of accuracy and related factors

Accuracy of mucosa supported guided dental implant surgery

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