Tissue response to poly-L-lactide acid-polyglycolic acid absorbable screws in autogenous bone grafts: a histologic morphological analysis

Tissue response to poly-L-lactide acid-polyglycolic acid absorbable screws in autogenous bone grafts: a histologic morphological analysis
February 2005
Mariza Akemi Matsumoto1, Hugo Nary Filho1, Lu??s Eduardo Marques Padovan1, Roberto Yoshio Kawakami1 and Lu??s Ant?•nio De Assis Taveira2
Clinical Oral Implants Research
Volume 16 Issue 1 Page 112 - February 2005
Blackwell Synergy Publishing
Abstract
Objectives: To evaluate the local bone condition of autogenous chin grafts in contact with resorbable polymers fixation devices.
Material and methods: Seven patients presenting severe maxillary and mandibular atrophy underwent alveolar ridge reconstruction with autogenous chin grafts fixed with conventional metallic screws, who received poly l-lactide acidpolyglycolic acid and titanium test screws for histological evaluation after 4 months of implantation.
Results: Viable bone tissue could be seen in the specimens related to titanium test screws, with no signs of bone resorption or inflammation. A thick layer of fibrous connective tissue was observed between the resorbable test screws and bone tissue, which presented a few areas of resorption.
Conclusion: There are no contraindications of both materials for use as fixation devices in autogenous bone grafts. However, care must be taken when using absorbable screws in a period of 4 months, which can interfere with the sequence of the treatment with endosseous dental implants.
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