scholarly journals Nasal correction in nasomaxillary hypoplasia (Binder’s syndrome): An optimised classification and treatment

2016 ◽  
Vol 49 (03) ◽  
pp. 314-321 ◽  
Author(s):  
Venkata Ramana Yamani ◽  
Shakuntala Ghosh ◽  
Shreekumar Tirunagari
Keyword(s):  
Costal Cartilage ◽  
Functional Results ◽  
En Bloc ◽  
Cartilage Grafts ◽  
Long Term Stability ◽  
Alar Base ◽  
Rare Congenital Disorder ◽  
Nasal Floor ◽  
The Individual

ABSTRACT Background: Nasomaxillary hypoplasia is a rare congenital disorder involving the central face. It imparts a distinctive appearance to the individual face as the age advances. Severity of the disorder varies, so do the manifestations. Methods: This was a retrospective study conducted on the records and photographic data of 560 rhinoplasty cases performed between 2006 March and 2016 March. About 16 cases of nasomaxillary hypoplasia were selected from the group and they were classified based on the severity of the features. Surgical correction performed in each group was detailed. Results: Three percent of the 560 rhinoplasties performed in our centre turned out to be cases of Binder's syndrome. Nasal correction with locoregional autologous cartilage grafts was sufficient in mild cases. Loco-regional cartilage grafts along with costal cartilage grafts were needed for moderate and severe cases. Anterior nasal floor along with alar base augmentation was performed to achieve a proper aesthetic profile in moderate and severe cases. Post-operative results were excellent in mild and moderate cases and acceptable in severe cases. Discussion: We attempted to correct the deformity only after growth of the nose and maxilla was completed. We used cartilage grafts as a mainstay as cartilage has long-term stability without resorption unlike bone grafts. Instead of following en bloc technique of cartilage assembly, we have reconstructed the nasal dorsum, columella and tip separately as this principle is more functionally acceptable with less warping or stiffness of the nose. Importance was given to proper anchorage of grafts. Conclusion: We have attempted to put together the various features into three categories of mild/moderate/severe based on previous anthropometric studies of nasal anatomical parameters. The second objective of our study was to advise a logical surgical protocol for each group so that future surgeons can follow an easy surgical guideline to attain optimal cosmetic and functional results.

scholarly journals Agenesis of Maxillary Lateral Incisors: Treatment Involves Much More Than Just Canine Guidance

2016 ◽  
Vol 10 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Giordani Santos Silveira ◽  
José Nelson Mucha
Keyword(s):  
Decision Making ◽  
Literature Review ◽  
Clinical Features ◽  
Congenital Absence ◽  
Term Stability ◽  
Long Term Stability ◽  
Canine Guidance ◽  
The Individual ◽  
Inform Decision Making

Objective: In this study, we aimed highlight some clinical features present in patients whose maxillary lateral incisors are missing, and proposed more logical, rational and predictable solutions to inform decision making in rehabilitation procedures. Methods: Literature review and discussion. Conclusion: Choosing the best possible treatment for congenital absence of maxillary lateral incisors depends on the multidisciplinary diagnosis of facial, occlusal, functional and periodontal features. It also depends on the individual long-term stability, and it does not only rely on canine-guided disocclusion.

Arthroplasty of the Proximal Interphalangeal Joint Using Costal Cartilage Grafts

1992 ◽  
Vol 17 (5) ◽  
pp. 583-585 ◽  
Author(s):  
T. HASEGAWA ◽  
Y. YAMANO
Keyword(s):  
Costal Cartilage ◽  
Proximal Phalanx ◽  
Functional Results ◽  
Clinical Results ◽  
Proximal Interphalangeal Joint ◽  
Range Of Movement ◽  
Cartilage Grafts ◽  
Articular Fractures ◽  
Pip Joint ◽  
Bony Ankylosis

Seven intra-articular fractures in five patients with partial bone loss at the PIP joint were reconstructed using a graft of costal cartilage. In all cases there were total or partial cartilagenous defects of the proximal phalangeal side of the joint. Early treatment of two joints, using only costal cartilage grafts, resulted in bony ankylosis due to necrosis of the grafted cartilage. In five joints the grafted cartilage included osseous portions using the costo-osteochondral junction, leading to an average range of movement of 64° with satisfactory clinical results. The technique is a useful alternative to other forms of arthroplasty or arthrodesis, and can provide satisfactory functional results when there is a partial defect of the head of the proximal phalanx.

scholarly journals Auditing and controlling as a tool for sme marketing risk management

2021 ◽  
pp. 225-235
Author(s):  
Vaclav Kupec ◽  
Premysl Písar
Keyword(s):  
Risk Management ◽  
Corporate Culture ◽  
Experimental Testing ◽  
The European Union ◽  
Term Stability ◽  
Long Term Stability ◽  
Business Environments ◽  
Marketing Risk ◽  
The Individual

The current hyper-competitive environment, rapid marketing tools, and modern techniques provide many opportunities for small and medium-sized businesses. Such opportunities could bring much in the way of rewards both for the individual companies and the wider economy. However, there are many threats associated with these business environments which cannot be overlooked. Small and medium-sized businesses are a significant stabilizing economic power within the European Union. Therefore, it is not surprising that small and medium-sized businesses competitiveness and their long-term stability are vital factors for European cohesion and development. This research aims to analyze risk management within small and medium-sized businesses, identify critical risk factors, and develop risk management, which could be applied to small and medium-sized businesses. The authors analyzed risk management's consequences and explained the variables as follows: ROA, Auditing, Controlling Management, Marketing, and Corporate Culture. Based on the research findings, the goal was to increase their interaction effectiveness, focusing on small and medium-sized businesses long-term stability and competitiveness. For achieving these aims, the paper provides two research questions and designs three hypotheses. This research was conducted from 2017 to 2020 on sample n = 432 EU small and medium-sized businesses. The reached data were analyzed by statistical method and experimental «in practice» testing. Based on the result and its experimental testing, a marketing risk management model was designed, tested, and verified using practical methods. This model could be used for the identification and avoidance of potential risks when developing a marketing strategy. The findings reached should be used to advance research and similarly for practical use within the business sphere.

scholarly journals CALIBRATION AND STABILITY ANALYSIS OF THE VLP-16 LASER SCANNER

2016 ◽  
Vol XL-3/W4 ◽  
pp. 55-60 ◽  
Author(s):  
C. L. Glennie ◽  
A. Kusari ◽  
A. Facchin
Keyword(s):  
Stability Analysis ◽  
Point Cloud ◽  
Temporal Stability ◽  
Laser Scanner ◽  
Effect Of Temperature ◽  
Geometric Calibration ◽  
Long Term Stability ◽  
The Individual

We report on a calibration and stability analysis of the Velodyne VLP-16 LiDAR scanner. The sensor is evaluated for long-term stability, geometric calibration and the effect of temperature variations. To generalize the results, three separate VLP-16 sensors were examined. The results and conclusions from the analysis of each of the individual sensors was similar. We found that the VLP-16 showed a consistent level of performance, in terms of range bias and noise level over the tested temperature range from 0–40 °C. A geometric calibration was able to marginally improve the accuracy of the VLP-16 point cloud (by approximately 20%) for a single collection, however the temporal stability of the geometric calibration negated this accuracy improvement. Overall, it was found that there is some long-term walk in the ranging observations from individual lasers within the VLP-16, which likely causes the instability in the determination of geometric calibration parameters. However, despite this range walk, the point cloud delivered from the VLP-16 sensors tested showed an accuracy level within the manufacturer specifications of 3 cm RMSE, with an overall estimated RMSE of range residuals between 22 mm and 27 mm.

Y-Shaped En-Bloc Mortise-Tenon Rhinoplasty Technique

2019 ◽  
Vol 40 (1) ◽  
pp. NP8-NP20 ◽  
Author(s):  
Zheng Tan ◽  
Wentao Sun ◽  
Wenjing Yang ◽  
Xiaoling Zhu ◽  
Fan Dong ◽  
...  
Keyword(s):  
Costal Cartilage ◽  
Septal Cartilage ◽  
The Novel ◽  
En Bloc ◽  
Level Of Evidence ◽  
Cartilage Grafts ◽  
Asian Patients ◽  
Caudal Portion ◽  
Aesthetic Results ◽  
Nose Deformity

AbstractBackgroundNasal tip management is the most important and challenging aspect of rhinoplasty. Costal cartilage can be utilized in septal extension grafting to effectively correct nasal shape deformity.ObjectivesThe authors described their experience with costal cartilage grafting for septal extension utilizing a novel en-bloc mortise-tenon technique to correct primary or secondary nose deformity or to enhance nasal appearance in Asian patients.MethodsFrom July 2015 to December 2017, costal cartilage grafts were applied as septal extension biomaterials utilizing the novel en-bloc mortise-tenon technique in 278 consecutive Asian rhinoplasty patients with primary (n = 95), secondary (n = 173), and tertiary (n = 10) nose deformity or in patients needing nasal reshaping. The age of the patients ranged from 19 to 46 years. In all cases, the mucoperichondria of the nasal septum were dissected bilaterally from the septal cartilage. The prepared en-bloc costal cartilage graft was mounted onto the caudal portion of the septal cartilage and fixed to the septum with 5-0 polydioxanone sutures.ResultsThe follow-up duration ranged from 10 months to 2.5 years. Of the 278 patients treated, 5 were male and 273 were female. External lengthening of the nose from the nasal root to the tip ranged from 3 to 10 mm. All patients except 1 were satisfied with the shape of the nose.ConclusionsThe authors obtained good aesthetic results utilizing the novel en-bloc mortise-tenon method for connecting costal cartilage grafts as septal extension materials in patients with different types of nasal deformity and in patients needing nose reshaping.Level of Evidence: 4

TRATAMENTO ORTO-CIRÚRGICO DE LATERO-DESVIO MANDIBULAR: RELATO DE CASO

2019 ◽  
Vol 1 (40) ◽  
Author(s):  
Ian Magalhães de Andrade
Keyword(s):  
Orthognathic Surgery ◽  
Facial Asymmetry ◽  
Lateral Deviation ◽  
Long Term Stability ◽  
Bimaxillary Orthognathic Surgery ◽  
The Face ◽  
Facial Harmony ◽  
The Individual ◽  
Functional Problems

RESUMO  A assimetria facial é uma anomalia que ocorre entre partes homólogas da face, que pode gerar diversas alterações na harmonia facial e problemas funcionais, como dificuldade mastigatória. Essas alterações podem causar grandes prejuízos psicossociais ao indivíduo que possui esse tipo de anormalidade dentofacial. Dentre as opções terapêuticas, a que mais se destaca é a cirurgia ortognática pois produz resultados previsíveis e com boa estabilidade a longo prazo. O objetivo do presente trabalho é relatar o caso clínico de uma paciente portadora de látero-desvio mandibular e importante assimetria facial, apresentando o resultado alcançado com a cirurgia ortognática bimaxilar e discutir a literatura especializada. Palavras-chave: Cirurgia ortognática; Látero-desvio mandibular; Ortodontia.   ABSTRACT  Facial asymmetry is an abnormality that occurs between homologous parts of the face, which can generate several changes in facial harmony and functional problems, as masticatory difficulty. These changes can cause great psychosocial damage to the individual who has this type of dentofacial abnormality. Among the therapeutic options, the most common is orthognathic surgery, because produces predictable results with good long-term stability. The aim of the present study is to report the clinical case of a patient with mandibular lateral deviation and an important facial asymmetry, presenting the result achieved with bimaxillary orthognathic surgery and discuss the specialized literature. Key words: Ortognatic surgery; Mandibular lateral deviation; Orthodontics

A Few Aspects on Lubricant Selection for Stepless Chain Coverters: Efficiency and Service Life

1992 ◽  
Author(s):  
G. Schönnenbeck
Keyword(s):  
Friction Coefficient ◽  
Service Life ◽  
Standardized Test ◽  
Test Methods ◽  
Long Term Stability ◽  
Friction Disk ◽  
The Individual ◽  
And Control ◽  
Selection Of

Abstract Stepless vehicle drives will assume their place next to automatic switching units throughout the world if they meet their expected fuel-saving potential. This necessitates optimizing the individual components of the CVT as regards their efficiency. The main source of losses are the hydraulic supply units and the losses which result specifically from non-positive transmission. In the case of stepless chain conveners, these result mainly from friction disk deformation. These losses account for 50 to 70 % of total CVT losses. Both loss components are influenced by the lubricant to a significantly greater extent than it would appear at first sight: In the case of fully-hydraulic clamping and control systems, the viscosity and its long-term stability determines the degree of leakage losses and therefore the size of the pump or pump combinations. This applies to pressure levels between 20 and 40 bar. This in turn is directly proportional to the hydraulic losses on the CVT. The friction coefficient of the lubricant determines the level of the necessary clamping forces. These are responsible for friction-disk deformation. Also of importance as far as the selection of lubricant is concerned is its influence on the CVT service life. The critical service life limits for chain converters are chain breakage (not the subject of this report) and evidence of wear, i.e. grey staining, sheave-grooving, pitting, scoring and rocker pin wear. Standardized test methods exist at P.I.V. for both wear manifestations and for the friction coefficient, these tests allowing a targeted selection of lubricants.

Long-term Use and Follow-up of Irradiated Homologous Costal Cartilage Grafts in the Nose

2009 ◽  
Vol 11 (6) ◽  
Author(s):  
Russell W. H. Kridel ◽  
Faramarz Ashoori ◽  
Edmund S. Liu ◽  
Carol G. Hart
Keyword(s):  
Costal Cartilage ◽  
Cartilage Grafts

scholarly journals Open bite in adult patients

2019 ◽  
Vol 24 (5) ◽  
pp. 69-78
Author(s):  
Carlos Alberto Estevanell Tavares ◽  
Susiane Allgayer
Keyword(s):  
Multidisciplinary Approach ◽  
Speech Therapy ◽  
Treatment Options ◽  
Functional Results ◽  
Open Bite ◽  
Anterior Open Bite ◽  
Posterior Teeth ◽  
Long Term Stability ◽  
High Relapse Rate

ABSTRACT Anterior open bite (AOB) is characterized by the lack of overlap or contact between maxillary and mandibular incisors, while the posterior teeth are in occlusion. Correction of this malocclusion is challenging due to difficulties in determining and addressing the etiologic factors, and the high relapse rate. A multidisciplinary approach may be necessary, with participation of Orthodontics, Surgery and Speech Therapy, to achieve adequate esthetic and functional results for long term stability. The present paper discusses the treatment options for AOB, their advantages and implications.

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