Evaluation of factors affecting recovery period in lower lip hypoesthesia after sagittal split ramus osteotomy in mandibular prognathism patients

2014 ◽  
Vol 42 (8) ◽  
pp. 1748-1752 ◽  
Author(s):  
Koichiro Ueki ◽  
Megumi Sotobori ◽  
Yuri Ishihara ◽  
Ran Iguchi ◽  
Akihiko Kosaka ◽  
...  
Keyword(s):  
Recovery Period ◽  
Sagittal Split Ramus Osteotomy ◽  
Lower Lip ◽  
Factors Affecting ◽  
Mandibular Prognathism

scholarly journals Long-term Stability after Bilateral Sagittal Split Ramus Osteotomy for Mandibular Prognathism Patients with Open Bite

2012 ◽  
Vol 22 (4) ◽  
pp. 255-263
Author(s):  
NAOKO TOMINAGA ◽  
TATSUO KAWAMOTO ◽  
NORIHISA HIGASHIHORI ◽  
HIROKI FUKUOKA ◽  
KEIJI MORIYAMA
Keyword(s):  
Open Bite ◽  
Sagittal Split Ramus Osteotomy ◽  
Mandibular Prognathism ◽  
Term Stability ◽  
Long Term Stability

scholarly journals The influence of lower lip position on the perceived attractiveness of chin prominence

2013 ◽  
Vol 83 (5) ◽  
pp. 795-800 ◽  
Author(s):  
Faranak Modarai ◽  
Jane Catalina Donaldson ◽  
Farhad B. Naini
Keyword(s):  
Sagittal Plane ◽  
Lower Lip ◽  
Mandibular Prognathism ◽  
Intraexaminer Reliability ◽  
Effect Of Age ◽  
Perceived Attractiveness

ABSTRACTObjectives:To evaluate the influence of the lower lip prominence for varying degrees of chin prominence in the sagittal plane and to establish whether lower lip prominence affects the perceived desire for surgery. To assess differences in preference between orthodontists and laypeople as well as the effect of age, gender, and ethnicity of observers on perceptions of attractiveness and desire for surgery.Materials and Methods:A silhouette of an idealized profile image was created. The image was manipulated to create six images demonstrating different degrees of retrogenia and progenia altered in 4-mm increments from −12 mm to +12 mm and six images demonstrating chin and lower lip prominence in 4-mm increments from −12 mm to +12 mm. One hundred laypeople and 30 orthodontists ranked the images from the most to the least attractive. A duplicate of one of the images was used in order to assess intraexaminer reliability.Results:The amount and direction of sagittal chin position and the prominence of the lower lip were found to have a significant effect on image rank. Chin protrusion was less attractive than retrusion and surgery was desired more often for these images. The overall direction of opinion was the same for laypeople and orthodontists.Conclusions:The chin prominence observed in a progenic patient is deemed less attractive than the combined chin and lower lip prominence observed in a patient with mandibular prognathism. In profiles with a more prominent chin a more protrusive lower lip position was preferred. When the chin was retrusive, a normal lower lip position was preferred to a retrusive lip.

scholarly journals The Changes of Cheek Line (Lateral) and Face Line (Frontal) after Correction of Mandibular Prognathism

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Yu-Chuan Tseng ◽  
Jung-Hsuan Cheng ◽  
Michael Yuan-Chien Chen ◽  
Kwei-Jing Chen ◽  
Chun-Ming Chen
Keyword(s):  
Null Hypothesis ◽  
Sagittal Split Ramus Osteotomy ◽  
Facial Profile ◽  
Mandibular Prognathism ◽  
Postoperative Change ◽  
Mandibular Setback ◽  
Mandibular Setback Surgery

Objective. The purpose of the present study was to investigate the improvements of facial profile and postoperative stability by single mandibular setback surgery. Materials and Methods. The study included twenty-seven patients who underwent mandibular prognathism correction by sagittal split ramus osteotomy (SSRO). Cephalometric radiograms (lateral and frontal) were collected and analyzed at three intervals: preoperatively (T1), immediately postoperatively (T2), and final follow-up postoperatively (T3). The lateral and frontal cephalometric parameters were measured. The immediate postoperative change (T21), postoperative stability (T32), and final surgical change (T31) were calculated and analyzed. The null hypothesis is that postoperative stability (T32) was not significantly correlated to amount of mandibular setback (T21). Results. The immediate postoperative change (T21) of menton (Me) was significantly backward 8.7 mm. In the final postoperative change (T31), average chin points anterior movements were approximately 0.32 mm. Investigating frontal appearance, inter ramus posterior (InterRp) and intergonion (InterGo) widths were significantly increased with 1.8 and 2.2 mm, respectively. Bilateral ramus angles were not significantly increased, about 1°. The horizontal Me (T32) had significant correlation (p=0.028) with amount of setback (T21). Therefore, null hypothesis is rejected. Conclusion. Postoperative relapse was significantly correlated to the amount of setback. The frontal transverse changes (InterRp and InterGo) were significantly increased.

scholarly journals Framework of stock-recovery strategies: analyses of factors affecting success and failure

2010 ◽  
Vol 67 (9) ◽  
pp. 1849-1855 ◽  
Author(s):  
Cornelius Hammer ◽  
Christian von Dorrien ◽  
Christopher C. E. Hopkins ◽  
Fritz W. Köster ◽  
Einar M. Nilssen ◽  
...  
Keyword(s):  
Model Building ◽  
Recovery Period ◽  
Scientific Basis ◽  
Performance Criteria ◽  
Rapid Reduction ◽  
Factors Affecting ◽  
Fish Stocks ◽  
Successful Recovery ◽  
Recovery Strategies ◽  
Stock Recovery

Abstract Hammer, C., von Dorrien, C., Hopkins, C. C. E., Köster, F. W., Nilssen, E. M., St John, M., and Wilson, D. C. 2010. Framework of stock-recovery strategies: analyses of factors affecting success and failure. – ICES Journal of Marine Science, 67: 1849–1855. The EU FP6 UNCOVER project was aimed at producing a rational scientific basis for developing recovery strategies for some ecologically and socio-economically important fish stocks/fisheries in European seas. The immediate objectives were to identify changes experienced during stock depletion/collapses, to understand prospects for recovery, to enhance the scientific understanding of the mechanisms of recovery, and to formulate recommendations on how best to implement long-term management/recovery plans. We extended an earlier analysis conducted within the project of 13 performance criteria in relation to the recovery of more than 30 fish stocks/fisheries worldwide by multivariate exploratory analysis (canonical correspondence analysis), followed by model building [discriminant analysis (DA)] to quantify the relative importance of key performance criteria, singly or combined. Using the existing database, DA indicated that the four best additive predictors of successful recovery were “rapid reduction in fishing mortality”, “environmental conditions during the recovery period”, “life-history characteristics” of the target stock, and “management performance criteria”. The model classified the status “recovered” and “non-recovered” assigned originally with nearly 100% accuracy.

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