Torque measurements of the mechanical load capacity of thin bony structures of the visceral cranium.
The stability of self-tapping screws of the Luhr (1979)-mini-plate system in thin facial bones was assessed. The maximal possible torque which can be applied to the screws before they strip the thread in the bone was measured. This end point was called the penetration torque. Only the central section of the maxillary sinus wall was unsuitable for anchorage of the screw and plate. The other sections of the osseous middle and lateral parts of the face, of the glabella and of the root of the nose have sufficient strength for bony segments to be anchored using plates.
Drommer
R B
RB
D000328:Adult; D000368:Aged; D001860:Bone Plates; D001863:Bone Screws; D005147:Facial Bones / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla / Q000502:physiology; D008875:Middle Aged; D013314:Stress, Mechanical; D015050:Zygoma / Q000502:physiology