Measurement of the zygomatic region for the optimal placement of quad zygomatic implants

Background The zygomatic implant is suggested to be placed in zygomatic areas with the largest thickness, but regions to obtain the largest bone‐to‐implant contact (BIC) were unknown. Purpose To identify the zygomatic regions for placing quad zygomatic implants that obtain the largest BIC. Materials...

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Bibliographic Details
Published in:Clinical implant dentistry and related research 2017-10, Vol.19 (5), p.841-848
Main Authors: Hung, Kuo‐feng, Ai, Qi‐yong, Fan, Sheng‐chi, Wang, Feng, Huang, Wei, Wu, Yi‐qun
Format: Article
Language:English
Subjects:
Adult
Aged
Body Weights and Measures
bone‐to‐implant contact
Complications
Cone-Beam Computed Tomography
Dental Implantation
Dental Implants
Dental Prosthesis Design
Dentistry
edentulous maxilla
Female
Humans
Image reconstruction
Implants
Incidence
Intrusion
Male
Maxilla
Middle Aged
Mouth, Edentulous - surgery
Placement
Prospective Studies
Transplants & implants
Young Adult
Zygoma
Zygoma - anatomy & histology
Zygoma - diagnostic imaging
zygomatic implants
zygomatic thickness
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Summary:Background The zygomatic implant is suggested to be placed in zygomatic areas with the largest thickness, but regions to obtain the largest bone‐to‐implant contact (BIC) were unknown. Purpose To identify the zygomatic regions for placing quad zygomatic implants that obtain the largest BIC. Materials and Methods The zygomatic thicknesses of 300 zygomata were measured at total 12 points on the superior, middle, and inferior areas on the 3‐dimensional reconstruction images. In 50 edentulous maxillae, the zygomatic BICs of virtually placed implants were measured and the incidence of the intrusion into the infratemporal fossa calculated at each point. Results The largest thickness in the superior, middle, and inferior regions were at Point A1 (8.01 ± 2.10 mm), Point B1 (7.02 ± 1.73 mm), and Point C0 (6.65 ± 1.66 mm), respectively. The virtually placed implants at Point A3 (16.70 ± 4.18 mm) and Point B1 (12.07 ± 3.84 mm) had the highest BICs while retaining the minimum incidence of the intrusion complications. Conclusion To obtain the largest BICs and avoid the intrusion complications, results suggested that the postero‐superior region (Point A3) and the center of zygoma (Point B1) were the optimal places for the placement of quad zygomatic implants.
ISSN:1523-0899
1708-8208
DOI:10.1111/cid.12524