title: [Bone SPECT of the jaws after fracture, onlay osteoplasty of insertion of implants].
abstract: OBJECTIVE
  The aim of this study was early differentiation between uncomplicated and complicated processes of healing in the jaw using bone SPECT.
  
  
  METHODS
  Investigations were performed in 40 mandibular fractures and 26 jaws after onlay osteoplasty as well as secondary insertion of implants. Bone SPECT was carried out within 1-2 months and after approximately 4-5 months. The uptake in the jaw was assessed semi-quantitatively using ROI analysis.
  
  
  RESULTS
  Fractures with uncomplicated healing showed a decrease of uptake in follow-up, whereas fractures with an infection in the later course showed an increase, resulting in a significantly higher uptake at the follow-up investigation for the latter group. 1-2 months after onlay osteoplasty significantly lower uptake was found in regions with later occurrence of sequestration. In regions with implants in which osseointegration failed, there was significant reduction of uptake initially and significant elevation at the follow-up investigation.
  
  
  CONCLUSIONS
  These results indicate a prognostic relevance of bone SPECT in the evaluation of processes of healing in the jaw.
authors.affiliation: Abteilung für Nuklearmedizin und spezielle Biophysik, Medizinische Hochschule Hannover, Deutschland.
authors.forename: G
authors.initials: G
authors.lastname: Berding
authors.forename: H
authors.initials: H
authors.lastname: Schliephake
authors.forename: G
authors.initials: G
authors.lastname: Neumann
authors.forename: R
authors.initials: R
authors.lastname: Schmelzeisen
authors.forename: F W
authors.initials: FW
authors.lastname: Neukam
authors.forename: G J
authors.initials: GJ
authors.lastname: Meyer
authors.forename: K F
authors.initials: KF
authors.lastname: Gratz
authors.forename: H
authors.initials: H
authors.lastname: Hundeshagen
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging* / Q000601:surgery*; D008440:Maxillary Fractures / Q000000981:diagnostic imaging*; D008875:Middle Aged; D010012:Osteogenesis; D011379:Prognosis; D019736:Prostheses and Implants; D011877:Radionuclide Imaging; D013518:Surgery, Plastic; D013530:Surgical Wound Infection; D013669:Technetium Tc 99m Medronate; D014945:Wound Healing
chemical_list: D013669:Technetium Tc 99m Medronate