A novel guided zygomatic implant surgery system compared to free hand: A human cadaver study on accuracy

Grecchi, Emma; Stefanelli, Luigi Vito; Grecchi, Francesco; Grivetto, Fabrizio; Franchina, Alessio

doi:10.1016/j.jdent.2021.103942

Cited by 13 publications

(25 citation statements)

References 28 publications

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“…However, orbital cavity penetration while drilling occurred in two patients with narrow zygomatic bones (no less than 15 mm), but the drills were redirected without clinical consequences. Recent studies have focused on using different guiding techniques to assist with ZI placement to increase intraoperative accuracy and safety 29–33 . Placement of ZIs has become more accurate with the use of surgical navigation systems, while also allowing for implementation of the restorative plan into the implant position 34 .…”

Section: Discussionmentioning

confidence: 99%

“…A study by Wu and colleagues 32 in a total of 221 ZI placements in atrophic edentulous using the commercial dynamic navigation system, showed a deviation of 2.64°. For the static surgical guide, 29,30 a modified customized template with double sleeves has been recently used and achieved acceptable accuracy in placing ZI. More clinical studies need to be investigated of the feasibility of dynamic and static systems for QZP 34 .…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies have focused on using different guiding techniques to assist with ZI placement to increase intraoperative accuracy and safety. [29][30][31][32][33] Placement of ZIs has become more accurate with the use of surgical navigation systems, while also allowing for implementation of the restorative plan into the implant position. 34 A study by Wu and colleagues 32 in a total of 221 ZI placements in atrophic edentulous using the commercial dynamic navigation system, showed a deviation of 2.64 .…”

Section: Ohrqolmentioning

confidence: 99%

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Long‐term survival and complications of Quad Zygoma Protocol with Anatomy‐Guided Approach in severely atrophic maxilla: A retrospective follow‐up analysis of up to 17 years

Davó,

Fan,

Wang

et al. 2023

Clin Implant Dent Rel Res

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IntroductionThe objective of the study was to provide long‐term clinical outcomes and complications in the severely atrophic edentulous maxillae treated by means of the quad zygoma protocol (QZP) using the Anatomy‐Guided Approach (AGA).MethodsThis was a retrospective cohort study of all consecutive patients with severely atrophic edentulous maxilla and insufficient bone height and width in the anterior and posterior regions bilaterally, who underwent rehabilitation with the QZP between May 2006 and December 2021. All patients were followed for at least 1 year. All zygomatic implants (ZIs) were placed by the same surgeon. The primary endpoint of the study was the implant survival rate. Secondary endpoints were implant success rate, prosthesis success rate, complications, and Oral Health‐Related Quality of Life using the OHIP‐14 questionnaire.ResultsA total of 56 patients (men 16, women 40) with 224 ZIs (Nobel Biocare, n = 204; Straumann, n = 16; Southern Implant, n = 4) placement were included with a mean follow‐up period 8.8 ± 3.9 years (range, 1.2–17.0). The survival (success) rate was 97.7%. Five ZIs in four patients failed. The mean time between implant placement and failure was 8.6 years (range, 0.5–13.3). All patients received immediate loading with acrylic prosthesis. The successful rates for the definitive prosthesis were 98.2%. Forty‐two patients received posterior cantilever for rehabilitation of fixed definitive prosthesis. Local orofacial inflammation (35.7%) and Sinusitis (12.5%) were the most common complications, occurring at a mean follow‐up of 10.0 (range, 4.2–14.9) and 10.3 (range, 4.3–16.2) years, respectively. In 48 patients, the mean score of the OHIP‐14 questionnaire was 1.7 ± 2.6 with the follow‐up period of 9.0 ± 4.1 years.ConclusionsThe rehabilitation of severely atrophic edentulous maxilla using the QZP has shown a predictable and high survival rate in the long term. The implementation of an immediate loading protocol offers potential benefits in stabilizing ZIs with cross‐arch stabilization. Moreover, the use of a posterior cantilever in reconstruction can effectively establish functional occlusion through well‐distributed ZIs, eliminating the need for additional implant placement.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Ohrqolmentioning

confidence: 99%

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Long‐term survival and complications of Quad Zygoma Protocol with Anatomy‐Guided Approach in severely atrophic maxilla: A retrospective follow‐up analysis of up to 17 years

Davó,

Fan,

Wang

et al. 2023

Clin Implant Dent Rel Res

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“…In this approach, they are positioned with the help of metal guides printed by laser sintering and supported on the bone. 13,14 However, the support of the guides on the mucosa can decrease the precision. A study in an ex vivo model tested the positioning of ZI with mucosa-supported guides; however, large variations in positioning were observed.…”

Section: Introductionmentioning

confidence: 99%

“…In the field of digital dentistry, ZI have been associated with computer‐guided surgery to increase the accuracy and safety of the technique. In this approach, they are positioned with the help of metal guides printed by laser sintering and supported on the bone 13,14 . However, the support of the guides on the mucosa can decrease the precision.…”

Section: Introductionmentioning

confidence: 99%

Survival and complications of zygomatic implants compared to conventional implants reported in longitudinal studies with a follow‐up period of at least 5 years: A systematic review and meta‐analysis

Moraschini

Queiroz

Sartoretto

et al. 2022

Clin Implant Dent Rel Res

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Background Zygomatic implants (ZI) have been frequently indicated to rehabilitate patients with extensive atrophies in alternatives to major bone reconstructions. It can be installed inside the maxillary sinus, called instrasinus zygomatic implant (IZI) or outside the maxillary sinus (EZI), depending on the surgery technique. Objective To evaluate the survival and complication rates of ZI in longitudinal studies when compared with conventional implants (CI). Methods An electronic search was performed in five databases and in Gray literature for articles published until April, 2022. The eligibility criteria comprised observational cohort studies (prospective or retrospective) and randomized clinical trials (RCTs) with at least 5 years of follow‐up, reporting survival rate of ZI versus CI. A meta‐analysis was conduct with 18 studies. Results A total of 5434 implants (2972 ZI and 2462 CI) were analyzed in 1709 patients. The mean survival rate was 96.5% ± 5.02 and 95.8% ± 6.36 for ZI and CI, respectively (mean follow‐up time of 78 months). There were observed no statistically significant between ZI and CI in prospective studies (risk ratio [RR] of 1.21; 95% confidence intervals [CIs]: 0.28 to 5.28; chi‐squared [Chi2] = 11.37; I2 = 56%; degrees of freedom [df] = 5; z‐score = 0.25; P = 0.80), retrospective studies IZI (RR of 1.29; 95% CIs: 0.52 to 3.23; Chi2 = 4.07; I2 = 2%; df = 4; z‐score = 0.55; P = 0.58) and retrospective studies EZI (RR of 0.72; 95% CIs: 0.31 to 1.66; Chi2 = 1.99; I2 = 0%; df = 3; z‐score = 0.78; P = 0.44). The biological complications most related to ZI was sinusitis, followed by infection and oroantral communication. Conclusion ZI have a high long‐term survival rate (96.5% with a mean of 91.5 months of follow‐up), showing no significant difference when compared with CI. The most prevalent biological complication is sinusitis, being most commonly to the IZI technique. This systematic review (SR) was registered in INPLASY under number INPLASY202280025.

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Three‐dimensional Design and Manufacture of Insertion Guides

Ye,

Pu,

Fan

et al. 2023

Clinical Insertion Techniques of Orthodontic Temporary Anchorage Devices

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A novel guided zygomatic implant surgery system compared to free hand: A human cadaver study on accuracy

Cited by 13 publications

References 28 publications

Long‐term survival and complications of Quad Zygoma Protocol with Anatomy‐Guided Approach in severely atrophic maxilla: A retrospective follow‐up analysis of up to 17 years

Long‐term survival and complications of Quad Zygoma Protocol with Anatomy‐Guided Approach in severely atrophic maxilla: A retrospective follow‐up analysis of up to 17 years

Survival and complications of zygomatic implants compared to conventional implants reported in longitudinal studies with a follow‐up period of at least 5 years: A systematic review and meta‐analysis

Three‐dimensional Design and Manufacture of Insertion Guides

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