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postgraduate thesis: Risk factors of neurosensory disturbance following bimaxillary orthognathic surgery
Title | Risk factors of neurosensory disturbance following bimaxillary orthognathic surgery |
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Authors | |
Issue Date | 2013 |
Publisher | The University of Hong Kong (Pokfulam, Hong Kong) |
Citation | Alolayan, A. B. A.. (2013). Risk factors of neurosensory disturbance following bimaxillary orthognathic surgery. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5063951 |
Abstract | Objectives: To report the incidence of objective and subjective neurosensory disturbance (NSD) after orthognathic surgery in a major orthognathic centre in Hong Kong, and to investigate the risk factors that contributed to the incidence of NSD after orthognathic surgery.
Materials and Methods: A retrospective cross-sectional study on NSD after orthognathic surgery in a local major orthognathic centre. Patients who had bimaxillary orthognathic surgery reviewed at post-operative 6 months, 12 months or 24 months were recruited to undergo a neurosensory test with subjective and 3 objective assessments. Possible risk factors of NSD including subjects’ age and gender, surgical procedures and surgeons’ experience were analyzed.
Results: 238 patients with 476 sides each of maxillary and mandibular procedures were recruited. The incidences of subjective NSD after maxillary procedures were 16.2%, 13% and 9.8% at post-operative 6 months, 12 months and 24 months, respectively; the incidences of subjective NSD after mandibular procedures were 35.4%, 36.6% and 34.6% at post-operative 6 months, 12 months and 24 months, respectively. Objective neurosensory tests showed general reduced sensitivity in subjects with subjective NSD. Increased age was found to be a significant risk factor of NSD after orthognathic surgery at short term (at 6 months and 12 months) but not at 24 months. SSO has a significantly higher risk of NSD when compared to VSSO. SSO in combination with anterior mandibular surgery has a higher risk of NSD when compared to VSSO in combination with anterior mandibular surgery or anterior mandibular surgery alone. Gender of patients a nd surgeons’ experience were not found to be risk factors of NSD after orthognathic surgery.
Conclusion: The incidence of NSD after maxillary and mandibular orthognathic procedures at post-operative 6 months, 12 months and 24 months was reported. Increased age was identified as a risk factor of short term post-operative NSD but not in long term (24 months or more). Specific mandibular procedures were related to higher incidence of NSD after orthognathic surgery. |
Degree | Master of Dental Surgery |
Subject | Orthodontics, Corrective - Complications. Face - Surgery - Complications. Facial bones - Abnormalities - Surgery - Complications. |
Dept/Program | Dental Surgery |
Persistent Identifier | http://hdl.handle.net/10722/192382 |
HKU Library Item ID | b5063951 |
DC Field | Value | Language |
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dc.contributor.author | Alolayan, Albraa Badr A. | - |
dc.date.accessioned | 2013-11-03T04:23:48Z | - |
dc.date.available | 2013-11-03T04:23:48Z | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | Alolayan, A. B. A.. (2013). Risk factors of neurosensory disturbance following bimaxillary orthognathic surgery. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5063951 | - |
dc.identifier.uri | http://hdl.handle.net/10722/192382 | - |
dc.description.abstract | Objectives: To report the incidence of objective and subjective neurosensory disturbance (NSD) after orthognathic surgery in a major orthognathic centre in Hong Kong, and to investigate the risk factors that contributed to the incidence of NSD after orthognathic surgery. Materials and Methods: A retrospective cross-sectional study on NSD after orthognathic surgery in a local major orthognathic centre. Patients who had bimaxillary orthognathic surgery reviewed at post-operative 6 months, 12 months or 24 months were recruited to undergo a neurosensory test with subjective and 3 objective assessments. Possible risk factors of NSD including subjects’ age and gender, surgical procedures and surgeons’ experience were analyzed. Results: 238 patients with 476 sides each of maxillary and mandibular procedures were recruited. The incidences of subjective NSD after maxillary procedures were 16.2%, 13% and 9.8% at post-operative 6 months, 12 months and 24 months, respectively; the incidences of subjective NSD after mandibular procedures were 35.4%, 36.6% and 34.6% at post-operative 6 months, 12 months and 24 months, respectively. Objective neurosensory tests showed general reduced sensitivity in subjects with subjective NSD. Increased age was found to be a significant risk factor of NSD after orthognathic surgery at short term (at 6 months and 12 months) but not at 24 months. SSO has a significantly higher risk of NSD when compared to VSSO. SSO in combination with anterior mandibular surgery has a higher risk of NSD when compared to VSSO in combination with anterior mandibular surgery or anterior mandibular surgery alone. Gender of patients a nd surgeons’ experience were not found to be risk factors of NSD after orthognathic surgery. Conclusion: The incidence of NSD after maxillary and mandibular orthognathic procedures at post-operative 6 months, 12 months and 24 months was reported. Increased age was identified as a risk factor of short term post-operative NSD but not in long term (24 months or more). Specific mandibular procedures were related to higher incidence of NSD after orthognathic surgery. | - |
dc.language | eng | - |
dc.publisher | The University of Hong Kong (Pokfulam, Hong Kong) | - |
dc.relation.ispartof | HKU Theses Online (HKUTO) | - |
dc.rights | The author retains all proprietary rights, (such as patent rights) and the right to use in future works. | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.source.uri | http://hub.hku.hk/bib/B50639511 | - |
dc.subject.lcsh | Orthodontics, Corrective - Complications. | - |
dc.subject.lcsh | Face - Surgery - Complications. | - |
dc.subject.lcsh | Facial bones - Abnormalities - Surgery - Complications. | - |
dc.title | Risk factors of neurosensory disturbance following bimaxillary orthognathic surgery | - |
dc.type | PG_Thesis | - |
dc.identifier.hkul | b5063951 | - |
dc.description.thesisname | Master of Dental Surgery | - |
dc.description.thesislevel | Master | - |
dc.description.thesisdiscipline | Dental Surgery | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.5353/th_b5063951 | - |
dc.date.hkucongregation | 2013 | - |
dc.identifier.mmsid | 991035600299703414 | - |