Effect of self-setting α-tricalcium phosphate between segments for bone healing and hypoaesthesia in lower lip after sagittal split ramus osteotomy

Autor: Akinori Moroi, Kohei Marukawa, Aya Mukozawa, Katsuhiko Okabe, Mao Miyazaki, Etsuhide Yamamoto, Koichiro Ueki, Kiyomasa Nakagawa
Rok vydání: 2012
Předmět:
Calcium Phosphates
Male
Osteotomy
Sagittal Split Ramus
Lower lip
Dentistry
Biocompatible Materials
Mandible
Osteogenesis
Absorbable Implants
Image Processing
Computer-Assisted
Computed tomography (CT)
Mandibular foramen
Middle Aged
Trigeminal somatosensory-evoked potential (TSEP)
medicine.anatomical_structure
Trigeminal Nerve Diseases
Female
α tricalcium phosphate
Oral Surgery
Bone Plates
Adult
Adolescent
Self-setting α-tricalcium phosphate (Biopex®)
Cephalometry
Sagittal split ramus osteotomy (SSRO)
Bone healing
Hypesthesia
Young Adult
Imaging
Three-Dimensional
stomatognathic system
Sagittal Split Ramus Osteotomy
Evoked Potentials
Somatosensory
Reaction Time
medicine
Humans
Bone formation
Trigeminal nerve
Orthognathic Surgical Procedures
business.industry
Significant difference
Lip Diseases
Recovery of Function
Absorbable plate
Lip
Otorhinolaryngology
Bone Substitutes
Surgery
Tomography
X-Ray Computed
business
Follow-Up Studies
Zdroj: Journal of Cranio-Maxillofacial Surgery. 40:e119-e124
ISSN: 1010-5182
DOI: 10.1016/j.jcms.2011.07.002
Popis: Aims: The aim of this study was to evaluate hypoaesthesia of the lower lip and bone formation using self-setting α-tricalcium phosphate (Biopex®) between the proximal and distal segments following sagittal split ramus osteotomy (SSRO) with bent absorbable plate fixation. Subjects and methods: The subjects were 40 patients (80 sides) who underwent bilateral SSRO setback surgery. They were divided into a Biopex® group (40 sides) and a control group (40 sides). The Biopex® was inserted into the anterior part of the gap between the segments in the Biopex® group. Trigeminal nerve hypoaesthesia in the region of the lower lip was assessed bilaterally using the trigeminal somatosensory-evoked potential (TSEP) method. Ramus square, ramus length, and ramus width, the square of the Biopex® at the horizontal plane under the mandibular foramen were assessed preoperatively, immediately after surgery, and 1 year postoperatively by computed tomography (CT). Results: The mean measurable period and standard deviation were 9.3 ± 15.7 weeks in the control group, 5.3 ± 8.3 weeks in the Biopex® group, and there was no significant difference. Ramus square after 1 year was significantly larger than that prior to surgery and new bone formation was found between the segments in both groups (P < 0.05). In the Biopex® group, the square of the Biopex® after 1 year was significantly smaller than that immediately after surgery (P < 0.05). Conclusion: This study suggested that inserting Biopex® in the gap between the proximal and distal segments was useful for new bone formation and it did not prevent the recovery of lower lip hypoaesthesia after SSRO with bent absorbable plate fixation. © 2011 European Association for Cranio-Maxillo-Facial Surgery.
Databáze: OpenAIRE
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