Analysis of the osseous/metal interface of drill free screws and self-tapping screws

Aim: A comparison of metal/osseous interface and bone remodelling after insertion of different types of titanium bone screws in vivo. Material: Samples of five of each of the following bone screw types were inserted into the anterior wall of the frontal sinus of five Göttingen minipigs: self-tapping...

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Bibliographic Details
Published in:Journal of cranio-maxillo-facial surgery 2001-04, Vol.29 (2), p.69-74
Main Authors: Heidemann, Wolfgang, Terheyden, Hendrik, Louis Gerlach, Klaus
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Bone Remodeling - physiology
Bone Screws
Dentistry
Equipment Design
Female
Fluorescent Dyes - administration & dosage
Frontal Bone - pathology
Frontal Bone - surgery
Frontal Sinus - pathology
Frontal Sinus - surgery
Haversian System - ultrastructure
Head and neck surgery. Maxillofacial surgery. Dental surgery. Orthodontics
Image Processing, Computer-Assisted
Injections, Intraperitoneal
Maxillofacial surgery. Dental surgery. Orthodontics
Medical sciences
Microradiography
Microscopy, Fluorescence
Microsurgery - instrumentation
Osseointegration - physiology
Statistics as Topic
Surface Properties
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Swine
Swine, Miniature
Technology. Biomaterials. Equipments
Titanium - chemistry
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Summary:Aim: A comparison of metal/osseous interface and bone remodelling after insertion of different types of titanium bone screws in vivo. Material: Samples of five of each of the following bone screw types were inserted into the anterior wall of the frontal sinus of five Göttingen minipigs: self-tapping micro- (1.5 mm) and miniscrews (2.0 mm) or drill free micro- (1.5 mm) and miniscrews (2.0 mm) (Martin Medizintechnik, Tuttlingen, Germany). Screw length was 7 mm. Methods: Sequential intraperitoneal injections of fluorochromes were performed between the second and ninth postoperative week. After 6 months the pigs were sacrificed, the screw-bone-blocks resected, and microradiographic, histological and fluorescence microscopical examinations were carried out. Results: Using drill free screws, mean screw/bone contact was 88.4% (miniscrews), or 93.8% (microscrews). With self-tapping miniscrews it was 54.9%, but in microscrews 81%; the differences were statistically significant (t -test: p
ISSN:1010-5182
1878-4119
DOI:10.1054/jcms.2000.0179