The Experts below are selected from a list of 1977 Experts worldwide ranked by ideXlab platform
Mohammed Almuzian - One of the best experts on this subject based on the ideXlab platform.
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effects of le fort i osteotomy on the Nasopharyngeal Airway 6 month follow up
Journal of Oral and Maxillofacial Surgery, 2016Co-Authors: Mohammed Almuzian, Anas Almukhtar, Ali Alhiyali, Philip Benington, A F AyoubAbstract:Purpose The literature discussing the impact of a single Le Fort I osteotomy on Nasopharyngeal Airways is limited. This study assessed the volumetric changes in the Nasopharyngeal Airway after a single Le Fort I osteotomy and explored the correlation between these changes and 3-dimensional surgical movements of the upper jaw. Materials and Methods This retrospective study was conducted in 40 patients who had undergone a single Le Fort I (maxillary advancement with or without impaction) to correct Class III malocclusion with maxillary hypoplasia. Preoperative (T1) and 6-month postoperative (T2) cone-beam computed tomographic (CBCT) scans of these patients were used for analysis. Maxillary surgical movements and volumetric changes in the Nasopharyngeal Airway were measured. The reproducibility of the measurements was evaluated using paired t tests and intraclass correlation coefficients. The Wilcoxon test and Pearson correlation coefficient were applied to evaluate the volumetric changes in the Nasopharyngeal Airway space and assess the correlations of these changes to the maxillary surgical movements. Results Six patients were excluded from the study owing to major differences (>5°) in their head and neck posture between the T1 and T2 CBCT scans. The errors of the repeated measurements were insignificant ( P > .05), with a high level of agreement ( r = 0.99; P P r = .4). Similarly, there was a moderate correlation between changes in the upper nasopharynx and those in the hypopharynx. Conclusion The single Le Fort I osteotomy was found to increase the retroglossal Airway volume. This could be important for the treatment of obstructive sleep apnea in patients with maxillary deficiency. A long-term follow-up assessment of a larger sample with a functional assessment of Airway would be beneficial to confirm these findings.
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does rapid maxillary expansion affect Nasopharyngeal Airway a prospective cone beam computerised tomography cbct based study
Surgeon-journal of The Royal Colleges of Surgeons of Edinburgh and Ireland, 2016Co-Authors: Mohammed Almuzian, Anas Almukhtar, A F Ayoub, Lubna Almuzian, Jim McdonaldAbstract:Abstract Background and purpose There is limited literature discussing the three dimnesional (3D) impact of rapid maxillary expansion (RME) on upper Airway. The purpose of this prospective Cone Beam Computerised Tomography (CBCT) based study is to assess the immediate 3D effects and to correlate the volumteric changes in the upper naspharyngeal Airway spaces secondary to RME. Materials and methods Seventeen participants (8 male, 9 female, with a mean age of 12.6 ± 1.8 years), who required RME for the management of narrow maxillary arch, were recruited for this study. The prescribed expansion regimen was quarter turn (0.25 mm), twice a day until over-expansion was achieved. The mean period for the active phase was 14 days with a range of 12–21 days. Pretreatment (T1) and immediate post-expansion (T2) CBCT images were obtained and then processed using ITK snap and OnDemand3D softwar packages. Paired t-test and Interclass Correlation Coefficient (ICC) were used to assess the reproducibility of the measurements, student t-test (P Main findings Though, the data of one patient was excluded from the study, owing to major differences (>5 degrees) in the head and neck posture between T1 and T2 CBCT scans, the study' findings shows that bonded RME is an effective dentoalveolar expander in growing patients (P= 0.01) with an average expansion of 3.7 mm and 2.8 mm in males and females respectively. Likewise, the upper nasopharynx (UNP) expanded significantly (15.2% in males and 12% in females). In comparison, the upper retropalatal space (URP) was significantly reduced, by almost one sixth of its original volume, more in males than females, 11.2% and 2.8% respectively. A strong direct correlation between the maxillary sinus volumetric changes, and between appliance expansion and dentoalveolar expansion were evident (PCC = 0.86, 0.75, respectively). There was also a moderate correlation between changes in the UNP and URP spaces. Conclusions RME was found to be an effective dentoalveolar expander and significantly augment the UNP and minimize the URP space. A similar comparative clinical study with long-term follow-up would be beneficial in accurately deteremining the clinical impact of RME on the Airway and breathing as well as the stability of these effects.
Jim Mcdonald - One of the best experts on this subject based on the ideXlab platform.
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does rapid maxillary expansion affect Nasopharyngeal Airway a prospective cone beam computerised tomography cbct based study
Surgeon-journal of The Royal Colleges of Surgeons of Edinburgh and Ireland, 2016Co-Authors: Mohammed Almuzian, Anas Almukhtar, A F Ayoub, Lubna Almuzian, Jim McdonaldAbstract:Abstract Background and purpose There is limited literature discussing the three dimnesional (3D) impact of rapid maxillary expansion (RME) on upper Airway. The purpose of this prospective Cone Beam Computerised Tomography (CBCT) based study is to assess the immediate 3D effects and to correlate the volumteric changes in the upper naspharyngeal Airway spaces secondary to RME. Materials and methods Seventeen participants (8 male, 9 female, with a mean age of 12.6 ± 1.8 years), who required RME for the management of narrow maxillary arch, were recruited for this study. The prescribed expansion regimen was quarter turn (0.25 mm), twice a day until over-expansion was achieved. The mean period for the active phase was 14 days with a range of 12–21 days. Pretreatment (T1) and immediate post-expansion (T2) CBCT images were obtained and then processed using ITK snap and OnDemand3D softwar packages. Paired t-test and Interclass Correlation Coefficient (ICC) were used to assess the reproducibility of the measurements, student t-test (P Main findings Though, the data of one patient was excluded from the study, owing to major differences (>5 degrees) in the head and neck posture between T1 and T2 CBCT scans, the study' findings shows that bonded RME is an effective dentoalveolar expander in growing patients (P= 0.01) with an average expansion of 3.7 mm and 2.8 mm in males and females respectively. Likewise, the upper nasopharynx (UNP) expanded significantly (15.2% in males and 12% in females). In comparison, the upper retropalatal space (URP) was significantly reduced, by almost one sixth of its original volume, more in males than females, 11.2% and 2.8% respectively. A strong direct correlation between the maxillary sinus volumetric changes, and between appliance expansion and dentoalveolar expansion were evident (PCC = 0.86, 0.75, respectively). There was also a moderate correlation between changes in the UNP and URP spaces. Conclusions RME was found to be an effective dentoalveolar expander and significantly augment the UNP and minimize the URP space. A similar comparative clinical study with long-term follow-up would be beneficial in accurately deteremining the clinical impact of RME on the Airway and breathing as well as the stability of these effects.
Anas Almukhtar - One of the best experts on this subject based on the ideXlab platform.
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effects of le fort i osteotomy on the Nasopharyngeal Airway 6 month follow up
Journal of Oral and Maxillofacial Surgery, 2016Co-Authors: Mohammed Almuzian, Anas Almukhtar, Ali Alhiyali, Philip Benington, A F AyoubAbstract:Purpose The literature discussing the impact of a single Le Fort I osteotomy on Nasopharyngeal Airways is limited. This study assessed the volumetric changes in the Nasopharyngeal Airway after a single Le Fort I osteotomy and explored the correlation between these changes and 3-dimensional surgical movements of the upper jaw. Materials and Methods This retrospective study was conducted in 40 patients who had undergone a single Le Fort I (maxillary advancement with or without impaction) to correct Class III malocclusion with maxillary hypoplasia. Preoperative (T1) and 6-month postoperative (T2) cone-beam computed tomographic (CBCT) scans of these patients were used for analysis. Maxillary surgical movements and volumetric changes in the Nasopharyngeal Airway were measured. The reproducibility of the measurements was evaluated using paired t tests and intraclass correlation coefficients. The Wilcoxon test and Pearson correlation coefficient were applied to evaluate the volumetric changes in the Nasopharyngeal Airway space and assess the correlations of these changes to the maxillary surgical movements. Results Six patients were excluded from the study owing to major differences (>5°) in their head and neck posture between the T1 and T2 CBCT scans. The errors of the repeated measurements were insignificant ( P > .05), with a high level of agreement ( r = 0.99; P P r = .4). Similarly, there was a moderate correlation between changes in the upper nasopharynx and those in the hypopharynx. Conclusion The single Le Fort I osteotomy was found to increase the retroglossal Airway volume. This could be important for the treatment of obstructive sleep apnea in patients with maxillary deficiency. A long-term follow-up assessment of a larger sample with a functional assessment of Airway would be beneficial to confirm these findings.
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does rapid maxillary expansion affect Nasopharyngeal Airway a prospective cone beam computerised tomography cbct based study
Surgeon-journal of The Royal Colleges of Surgeons of Edinburgh and Ireland, 2016Co-Authors: Mohammed Almuzian, Anas Almukhtar, A F Ayoub, Lubna Almuzian, Jim McdonaldAbstract:Abstract Background and purpose There is limited literature discussing the three dimnesional (3D) impact of rapid maxillary expansion (RME) on upper Airway. The purpose of this prospective Cone Beam Computerised Tomography (CBCT) based study is to assess the immediate 3D effects and to correlate the volumteric changes in the upper naspharyngeal Airway spaces secondary to RME. Materials and methods Seventeen participants (8 male, 9 female, with a mean age of 12.6 ± 1.8 years), who required RME for the management of narrow maxillary arch, were recruited for this study. The prescribed expansion regimen was quarter turn (0.25 mm), twice a day until over-expansion was achieved. The mean period for the active phase was 14 days with a range of 12–21 days. Pretreatment (T1) and immediate post-expansion (T2) CBCT images were obtained and then processed using ITK snap and OnDemand3D softwar packages. Paired t-test and Interclass Correlation Coefficient (ICC) were used to assess the reproducibility of the measurements, student t-test (P Main findings Though, the data of one patient was excluded from the study, owing to major differences (>5 degrees) in the head and neck posture between T1 and T2 CBCT scans, the study' findings shows that bonded RME is an effective dentoalveolar expander in growing patients (P= 0.01) with an average expansion of 3.7 mm and 2.8 mm in males and females respectively. Likewise, the upper nasopharynx (UNP) expanded significantly (15.2% in males and 12% in females). In comparison, the upper retropalatal space (URP) was significantly reduced, by almost one sixth of its original volume, more in males than females, 11.2% and 2.8% respectively. A strong direct correlation between the maxillary sinus volumetric changes, and between appliance expansion and dentoalveolar expansion were evident (PCC = 0.86, 0.75, respectively). There was also a moderate correlation between changes in the UNP and URP spaces. Conclusions RME was found to be an effective dentoalveolar expander and significantly augment the UNP and minimize the URP space. A similar comparative clinical study with long-term follow-up would be beneficial in accurately deteremining the clinical impact of RME on the Airway and breathing as well as the stability of these effects.
Lubna Almuzian - One of the best experts on this subject based on the ideXlab platform.
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does rapid maxillary expansion affect Nasopharyngeal Airway a prospective cone beam computerised tomography cbct based study
Surgeon-journal of The Royal Colleges of Surgeons of Edinburgh and Ireland, 2016Co-Authors: Mohammed Almuzian, Anas Almukhtar, A F Ayoub, Lubna Almuzian, Jim McdonaldAbstract:Abstract Background and purpose There is limited literature discussing the three dimnesional (3D) impact of rapid maxillary expansion (RME) on upper Airway. The purpose of this prospective Cone Beam Computerised Tomography (CBCT) based study is to assess the immediate 3D effects and to correlate the volumteric changes in the upper naspharyngeal Airway spaces secondary to RME. Materials and methods Seventeen participants (8 male, 9 female, with a mean age of 12.6 ± 1.8 years), who required RME for the management of narrow maxillary arch, were recruited for this study. The prescribed expansion regimen was quarter turn (0.25 mm), twice a day until over-expansion was achieved. The mean period for the active phase was 14 days with a range of 12–21 days. Pretreatment (T1) and immediate post-expansion (T2) CBCT images were obtained and then processed using ITK snap and OnDemand3D softwar packages. Paired t-test and Interclass Correlation Coefficient (ICC) were used to assess the reproducibility of the measurements, student t-test (P Main findings Though, the data of one patient was excluded from the study, owing to major differences (>5 degrees) in the head and neck posture between T1 and T2 CBCT scans, the study' findings shows that bonded RME is an effective dentoalveolar expander in growing patients (P= 0.01) with an average expansion of 3.7 mm and 2.8 mm in males and females respectively. Likewise, the upper nasopharynx (UNP) expanded significantly (15.2% in males and 12% in females). In comparison, the upper retropalatal space (URP) was significantly reduced, by almost one sixth of its original volume, more in males than females, 11.2% and 2.8% respectively. A strong direct correlation between the maxillary sinus volumetric changes, and between appliance expansion and dentoalveolar expansion were evident (PCC = 0.86, 0.75, respectively). There was also a moderate correlation between changes in the UNP and URP spaces. Conclusions RME was found to be an effective dentoalveolar expander and significantly augment the UNP and minimize the URP space. A similar comparative clinical study with long-term follow-up would be beneficial in accurately deteremining the clinical impact of RME on the Airway and breathing as well as the stability of these effects.
A F Ayoub - One of the best experts on this subject based on the ideXlab platform.
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effects of le fort i osteotomy on the Nasopharyngeal Airway 6 month follow up
Journal of Oral and Maxillofacial Surgery, 2016Co-Authors: Mohammed Almuzian, Anas Almukhtar, Ali Alhiyali, Philip Benington, A F AyoubAbstract:Purpose The literature discussing the impact of a single Le Fort I osteotomy on Nasopharyngeal Airways is limited. This study assessed the volumetric changes in the Nasopharyngeal Airway after a single Le Fort I osteotomy and explored the correlation between these changes and 3-dimensional surgical movements of the upper jaw. Materials and Methods This retrospective study was conducted in 40 patients who had undergone a single Le Fort I (maxillary advancement with or without impaction) to correct Class III malocclusion with maxillary hypoplasia. Preoperative (T1) and 6-month postoperative (T2) cone-beam computed tomographic (CBCT) scans of these patients were used for analysis. Maxillary surgical movements and volumetric changes in the Nasopharyngeal Airway were measured. The reproducibility of the measurements was evaluated using paired t tests and intraclass correlation coefficients. The Wilcoxon test and Pearson correlation coefficient were applied to evaluate the volumetric changes in the Nasopharyngeal Airway space and assess the correlations of these changes to the maxillary surgical movements. Results Six patients were excluded from the study owing to major differences (>5°) in their head and neck posture between the T1 and T2 CBCT scans. The errors of the repeated measurements were insignificant ( P > .05), with a high level of agreement ( r = 0.99; P P r = .4). Similarly, there was a moderate correlation between changes in the upper nasopharynx and those in the hypopharynx. Conclusion The single Le Fort I osteotomy was found to increase the retroglossal Airway volume. This could be important for the treatment of obstructive sleep apnea in patients with maxillary deficiency. A long-term follow-up assessment of a larger sample with a functional assessment of Airway would be beneficial to confirm these findings.
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does rapid maxillary expansion affect Nasopharyngeal Airway a prospective cone beam computerised tomography cbct based study
Surgeon-journal of The Royal Colleges of Surgeons of Edinburgh and Ireland, 2016Co-Authors: Mohammed Almuzian, Anas Almukhtar, A F Ayoub, Lubna Almuzian, Jim McdonaldAbstract:Abstract Background and purpose There is limited literature discussing the three dimnesional (3D) impact of rapid maxillary expansion (RME) on upper Airway. The purpose of this prospective Cone Beam Computerised Tomography (CBCT) based study is to assess the immediate 3D effects and to correlate the volumteric changes in the upper naspharyngeal Airway spaces secondary to RME. Materials and methods Seventeen participants (8 male, 9 female, with a mean age of 12.6 ± 1.8 years), who required RME for the management of narrow maxillary arch, were recruited for this study. The prescribed expansion regimen was quarter turn (0.25 mm), twice a day until over-expansion was achieved. The mean period for the active phase was 14 days with a range of 12–21 days. Pretreatment (T1) and immediate post-expansion (T2) CBCT images were obtained and then processed using ITK snap and OnDemand3D softwar packages. Paired t-test and Interclass Correlation Coefficient (ICC) were used to assess the reproducibility of the measurements, student t-test (P Main findings Though, the data of one patient was excluded from the study, owing to major differences (>5 degrees) in the head and neck posture between T1 and T2 CBCT scans, the study' findings shows that bonded RME is an effective dentoalveolar expander in growing patients (P= 0.01) with an average expansion of 3.7 mm and 2.8 mm in males and females respectively. Likewise, the upper nasopharynx (UNP) expanded significantly (15.2% in males and 12% in females). In comparison, the upper retropalatal space (URP) was significantly reduced, by almost one sixth of its original volume, more in males than females, 11.2% and 2.8% respectively. A strong direct correlation between the maxillary sinus volumetric changes, and between appliance expansion and dentoalveolar expansion were evident (PCC = 0.86, 0.75, respectively). There was also a moderate correlation between changes in the UNP and URP spaces. Conclusions RME was found to be an effective dentoalveolar expander and significantly augment the UNP and minimize the URP space. A similar comparative clinical study with long-term follow-up would be beneficial in accurately deteremining the clinical impact of RME on the Airway and breathing as well as the stability of these effects.
