Objective: Loss of teeth is accompanied with loss of function and therefore reduction of alveolar bone height. Insufficient bone height can jeopardize the anchorage of implants or surgical procedures such as distraction osteogenesis, because of possible mandibular nerve damage. The goal of this investigation was to determine the exact course of the intramandibular nerve in edentulous mandibles.
Material And Method: The study samples included 37 dry human edentulous mandibles. A dental CT scan analysis was performed and four cross sectional views were investigated for each mandible. The Cawood classification was used to assess the grade of atrophy. Implantation simulation was performed in every case.
Results: There was no bilateral symmetry in edentulous mandibles, whatever the cross-section studied. A rate of 38.7% were classified Cawood class IV, the most common group in edentulous patients. Our study results led us to place the distraction osteogenesis device in the posterior edentulous mandible. Implant placement was not possible in every case.
Discussion: Our findings allow better understanding from the pathway of the mandibular canal close to the first and second molar in edentulous mandibles. This anatomical data and surgical techniques such as implant insertion and distraction osteogenesis allow finding solutions for "mandibular edentulism". Distraction is essential for a successful implantology.
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http://dx.doi.org/10.1016/j.stomax.2012.02.002 | DOI Listing |
J Plast Surg Hand Surg
January 2025
Department of Clinical Sciences in Malmö, Lund University, Lund, Sweden; Department of Oral and Maxillofacial Surgery, Skåne University Hospital, Malmö, Sweden; Department of Orthodontics, Malmö University, Malmö, Sweden.
Pre- and postoperative photos to assess results are widely used in plastic and reconstructive surgery, for instance, in patients with cleft lip and palate (CL/P). Evaluations are often performed by assessment panels by viewing the photos. However, these are prone to be subjective.
View Article and Find Full Text PDFCleft Palate Craniofac J
January 2025
Department of Physiology and Medical Biochemistry, Faculty of Medicine, Airlangga University, Surabaya, Indonesia.
Objectives: This study compares perioperative outcomes between spring-assisted cranioplasty (SAC), distraction osteogenesis (DO) and conventional expansion in craniosynostosis surgery.
Design: Systematic review and meta-analysis.
Setting: Retrospective and prospective cohort.
Int J Pediatr Otorhinolaryngol
January 2025
Dr. Elie E. Rebeiz Department of Otolaryngology - Head and Neck Surgery, Tufts Medical Center, Boston, MA, USA. Electronic address:
Background: Internal and external devices may be utilized in mandibular distraction osteogenesis (MDO) for the correction of symptomatic micrognathia in infants and children.
Purpose: To compare the rate and severity of infection between internal and external MDO devices.
Study Design, Setting, Sample: Retrospective cohort study utilizing an institutional database of patients who underwent MDO.
J Clin Med
January 2025
Department of Biochemistry and Biotechnology, Institute of Biological Sciences, Maria Curie-Sklodowska University, 20-614 Lublin, Poland.
Limb lengthening and deformity correction techniques, particularly distraction osteogenesis, have significantly evolved in pediatric orthopedics. This study examines the temporal changes of key biochemical markers-vascular endothelial growth factor (VEGF), fibroblast growth factor 1 (FGF-1), and the propeptide of type I collagen (P1NP)-during the limb lengthening process. Twenty pediatric patients (aged 13-16) underwent distraction osteogenesis using the Circular Hexapod External Fixator.
View Article and Find Full Text PDFZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
January 2025
Department of Orthopedics, Rehabilitation Hospital of the National Research Center for Rehabilitation Technical Aids, Beijing, 100176, P. R. China.
Objective: To describe the characteristics of short arm deformity in patients with achondroplasia, and summarize the progress of its lenthening and reconstruction, so as to provide reference for clinical diagnosis and treatment.
Methods: The literature on the lenthening of upper limb with achondroplastic short arm deformity at home and abroad in recent years was reviewed, and the characteristics, extension methods, postoperative management, effectiveness evaluation, and related complications of short arm deformity were summarized.
Results: Achondroplastic short arm deformity affect the patient's daily perineal hygiene activities.
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