Texture of the os zygomaticum: features of the internal structure in relation to age, sex and loss of teeth

Work is devoted to research of internal structure of a zygomatic bone taking into account age, sex and loss of natural teeth that is bound to use in maxillofacial surgery of zygomatic implants. The internal structure of a zygomatic bone on 120 skulls (75 man's and 45 female) the people who died aged from 18 until 79 years is studied. Skulls had teeth on top and lower jaws that provided to these people at their life a usual physiological masticatory stress during meal on a bone of the chewing device. For an assessment of influence of loss of natural teeth on internal structure of a zygomatic bone, 170 skulls (95 man's and 75 female) the people who died aged from 45 until 82 years are in addition investigated. Skulls had different extent of loss of teeth on top and lower jaws. Among these skulls, 120 were with partial loss of teeth in the field of premolar tooth’s and molar teeth and 50 - with full loss of teeth on the top jaws. On craniological material by means of cranioscopy and craniometrics methods of research studied expressions of a series of external and measuring signs of a zygomatic bone, and also estimated its internal structure: a ratio of compact and spongiform (trabecular) substance in different departments of a zygomatic bone. It is established that at the adult the internal structure of a zygomatic bone doesn't change with age, and also doesn't depend on loss of natural teeth. Thus features of a ratio of compact and spongiform (trabecular) substance in different departments of a zygomatic bone are shown, correlation of types of a bone tissue, agrees accepted classifications in a dental implantology, with types of a bone tissue of jaws, and also the sizes and a shape of a skull.