Segmental stability in orthognathic surgery: Hydroxyapatite/Poly-l-lactide osteoconductive composite versus titanium miniplate osteosyntheses

摘要: Abstract Hydroxyapatite was included into F-u-HA/PLLA (unsintered hydroxyapatite – Poly l -lactide) composite osteosynthesis material for its documented osteoconductive capacity. This study investigates segmental retention capacities and outcome stability using osteosyntheses in orthognathic surgery. Of fifty patients total, 25 were osteofixated with bioabsorbable compared to a group of treated titanium miniplates. The 14 maxillary advancements, 4 setbacks, 13 impactions, 5 elongations at A-point; the 20 2 11 impactions elongations. In mandible advancements B-point, 16 clockwise rotations 8 counterclockwise Gonial angle (Ar-Go-Gn); 9 mandibular 6 Ar-Go-Gn. Segmental relapse assessed comparing preoperative, postoperative follow-up roentgen cephalometrics 22 ± 11 months on average cases, 24 ± 22 group. All absolute operative movements nonsignificant cases cases. Relapses but there greater vertical osteosyntheses. Throughout this study, appeared as stable It can therefore be concluded, although from limited number patients, that investigated used similar way miniplates Compared earlier studies other polymers literature, proved more retention.