Analysis of craniofacial thickness for extraoral implants applications

Craniofacial fixation has been used for retention and support of facial prosthetic devices, useful in patients with squealed of treatment for cancer, tumors, trauma and congenital or genetic malformations. We conduced a descriptive study to establish the bone thickness in different regions of the cranium complex to define the best locations for craniofacial implants installations. In 40 skulls were performed tomography computed volumetric cone beam with the I-CAT VISION software. Subsequent images were analyzed in InVesallius 3.0 software by two researchers to perform bone morphometry. The measurement were performed for the periorbital, perinasal and periauricular region and the area of zygomatic bone, determining the distance between the internal and external cortical senses in sagittal, axial and coronal views. The values were determined for each individual unit. In the supraorbital area, the minimum values were 7.92 mm ± 1.82 mm and the lateral area were 7.54 mm ± 0.98 mm allowing the installation of 5 mm or 6 mm length implants, for zygomatic bone area, minimum values were 10.4 mm ± 2.35 mm allowing the insertion of implants of 8 mm. In the periauricular areas the values in the upper region were 2.93 mm ± 0.55 mm and lower were 3.1 mm ± 0.7 mm; the region of the mastoid process allowed the installation of 5 mm implants. In the perinasal region 4 mm or 5 mm length implants could be installed. We conclude that in the cranio-maxillo-facial structure there are regions for acceptable thickness for extraoral implant insertion, being the superior temporal bone area associated to major thickness limitations.

Conflict of interest: None declared.

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Feb 5, 2018 | Posted by in Oral and Maxillofacial Surgery | Comments Off on Analysis of craniofacial thickness for extraoral implants applications
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