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Malocclusion

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https://www.readbyqxmd.com/read/28453618/long-term-effects-of-class-ii-herbst-treatment-on-the-pharyngeal-airway-width
#1
Christoph Drosen, Niko Christian Bock, Julia von Bremen, Hans Pancherz, Sabine Ruf
Objective: The aim was to assess the long-term effects of Class II malocclusion treatment with the Herbst appliance on the pharyngeal airway (PA) width in comparison to untreated individuals with Classes I and II malocclusion. Methods: Lateral cephalometric radiographs of 13 male Class II patients from before (T1) and after (T2) treatment with the Herbst appliance as well as after the end of growth (T3) were retrospectively analyzed and compared to two untreated age- and gender-matched samples with Class I (n = 13) or Class II (n = 13) malocclusion...
April 27, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28446369/effect-of-occlusal-plane-correction-on-lip-cant-in-two-jaw-orthognathic-surgery-a-three-dimensional-analysis
#2
Christian Freudlsperger, Thomas Rückschloß, Oliver Ristow, Jens Bodem, Steffen Kargus, Robin Seeberger, Michael Engel, Jürgen Hoffmann, Christian Mertens
INTRODUCTION: The aim of the present study was to evaluate the impact of canting correction in occlusal plane (OP) on the change of lip cant (LC) using three-dimensional (3D) photogrammetry in combination with cone-beam computed tomographic (CBCT) scans in class III asymmetric patients. MATERIALS AND METHODS: Fourteen asymmetric patients with exclusively skeletal class III malocclusion undergoing two-jaw surgery were included. All patients received 3D-photogrammetry and CBCT scans before (T1) and after orthognathic surgery (T2)...
March 29, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28444019/non-surgical-treatment-of-transverse-deficiency-in-adults-using-microimplant-assisted-rapid-palatal-expansion-marpe
#3
Daniel Paludo Brunetto, Eduardo Franzzotti Sant'Anna, Andre Wilson Machado, Won Moon
INTRODUCTION: Maxillary transverse deficiency is a highly prevalent malocclusion present in all age groups, from primary to permanent dentition. If not treated on time, it can aggravate and evolve to a more complex malocclusion, hindering facial growth and development. Aside from the occlusal consequences, the deficiency can bring about serious respiratory problems as well, due to the consequent nasal constriction usually associated. In growing patients, this condition can be easily handled with a conventional rapid palatal expansion...
February 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28440029/treatment-effects-of-reverse-twin-block-and-reverse-pull-face-mask-on-craniofacial-morphology-in-early-and-late-mixed-dentition-children
#4
N Fareen, M K Alam, M F Khamis, N Mokhtar
OBJECTIVE: Reverse Twin-Block (RTB) and Reverse Pull Face Mask (RPFM) appliances are used to correct Class III malocclusion in growing patients. Aim of this retrospective study was to compare and analyse craniofacial changes produced by RTB and RPFM in the early and late mixed dentition in Malay children with Class III malocclusion. METHODS: Data consisted of pre- and post-treatment lateral cephalograms of 95 children, 49 patients with RTB and 46 patients with RPFM, divided into an early (8-9 year) and late (10-11 year) group...
April 25, 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28439173/surgical-correction-of-brodie-bite-in-adults-a-novel-surgical-splint
#5
P Ratna, B Srinivasan, R Devaki Vijayalakshmi, C Ravanth Kumar
INTRODUCTION: The incidence of telescopic bite is a rare occurrence. Brodie bite malocclusions manifest with severe skeletal and dental transverse, sagittal and vertical problems. MATERIALS AND METHODS: A patient presenting with a telescopic bite and mandibular retrognathism was treated by orthognathic approach. A unique surgical splint was used as an aid in performing the maxillary constriction and segmental osteotomy. CONCLUSION: The telescopic bite was corrected successfully and occlusal rehabilitation was achieved...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28438395/motivation-for-orthognathic-treatment-and-anticipated-satisfaction-levels-a-two-centre-cross-national-audit
#6
Raphael Patcas, Susan J Cunningham, Justin Shute, Timothy Lloyd, Joachim A Obwegeser, Lida Arjomand, Sujata Sharma
PURPOSE: This audit investigated factors which motivate patients to seek orthognathic treatment, assessed how confident patients were that they would be satisfied with the outcome of treatment, and explored possible influencing factors. MATERIALS AND METHODS: Questionnaires were distributed to pre-surgical patients at two centres (United Kingdom and Switzerland); questions asked what patients wished to gain from orthognathic treatment and how confident they were that they would be satisfied with treatment outcome...
March 27, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28431788/morphology-of-the-inferior-border-of-the-mandible-correct-relation-between-the-lowest-position-of-the-outer-and-inner-contours-of-the-cortex-for-a-successful-split
#7
K Matsushita, M Donen, S Harata, K Nagamine, K Tei
For a sagittal split ramus osteotomy to be secure, the relation between the outer and inner contours of the cortex at the inferior border of the mandible is critical. The lowest point of the outer contour is not always immediately below that of the inner contour, and the former is placed more lingually than the latter in about a third of all cases. This tendency is much more noticeable in skeletal class I and II malocclusions than class III. It is therefore important to examine the lowest point of the inferior border in every case, and to carry the inferior part of the buccal cut on to the lingual side if necessary...
April 18, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28431477/duration-of-orthognathic-surgical-treatment
#8
Jaakko Paunonen, Mika Helminen, Timo Peltomäki
OBJECTIVE: The objective of this study was to determine the duration of orthognathic-surgical treatment conducted with conventional pre- and post-surgical orthodontic treatment phases. MATERIAL AND METHODS: The study material was comprised of the files of 185 consecutive patients treated in Oral and Maxillofacial Unit, Tampere University Hospital, Finland, in 2007-2014. The files were reviewed and the following data was obtained: gender and age of patients, ICD-10 diagnosis, type of malocclusion, duration of pre- and post-surgical orthodontic treatment and type of operation...
April 21, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28430887/measurement-of-forces-and-moments-around-the-maxillary-arch-for-treatment-of-a-simulated-lingual-incisor-and-high-canine-malocclusion-using-straight-and-mushroom-archwires-in-fixed-lingual-appliances
#9
Brandon Owen, Geoffry Gullion, Giseon Heo, Jason P Carey, Paul W Major, Dan L Romanyk
Introduction: An Orthodontic SIMulator (OSIM) was used to investigate the propagation of forces and moments around a simulated archform for a gingival displaced canine and lingual displaced lateral incisor using fixed lingual orthodontic appliances. Methods: In-Ovation L self-ligating lingual brackets were bonded to anatomically shaped teeth on the OSIM, and the teeth were positioned such that a G4 NiTi 0.016" large maxillary mushroom archwire could be ligated in passive position...
April 20, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28425832/use-of-clear-aligners-in-open-bite-cases-an-unexpected-treatment-option
#10
Aldo Giancotti, Francesco Garino, Gianluca Mampieri
In open bite case treatments, a proper diagnostic differentiation is essential in determining the appropriate corrective procedures. Dental open bites are generally more responsive to treatment with orthodontics alone, whereas skeletal open bites often require a combination of orthodontics and orthognathic surgery. Patient selection and treatment principles for non-surgical open bite treatment routinely include fixed appliances both labial or lingual. However, removable clear aligners have gained a consistent popularity in the treatment of complex cases including open bite malocclusions...
April 20, 2017: Journal of Orthodontics
https://www.readbyqxmd.com/read/28422603/factors-responsible-for-unfavorable-dental-arch-relationship-in-non-syndromic-unilateral-cleft-lip-and-palate-children
#11
Sanjida Haque, Mohammad Khursheed Alam, Mohd Fadhli Khamis
OBJECTIVES: Multiple factors are whispered to be crucial cause of unfavourable dental arch relationship in cleft lip and palate (CLP).This study aims to evaluate the dental arch relationship of Bangladeshi children with non syndromic unilateral cleft lip and palate (UCLP) following cheiloplasty and palatoplasty. Also to explore the various congenital (UCLP type, UCLP side, family history of cleft, family history of class III) and environmental (cheiloplasty, palatoplasty) factors that affects dental arch relationship of UCLP patients...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28421148/multidisciplinary-approach-in-the-management-of-a-complex-case-implant-prosthetic-rehabilitation-of-a-periodontal-smoking-patient-with-partial-edentulism-malocclusion-and-aesthetic-diseases
#12
Alessandro Lanza, Fabrizio Di Francesco, Gennaro De Marco, Fabio Scognamiglio, Valeria Aruta, Angelo Itro
Complex periprosthetic cases are considered as challenges by clinicians. Clinical and radiographic parameters should be considered separately to make the right choice between an endodontically or periodontally compromised treated tooth and implant. Therefore, in order to decide whether the tooth is safe or not, data that have to be collected are specific parameters of both the patient and the clinician. In addition, the presence of periodontal, prosthetic, and orthodontic diseases requires patients to be set in multidisciplinary approach...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28418700/three-dimensional-analysis-of-upper-airway-morphology-in-skeletal-class-iii-patients-with-and-without-mandibular-asymmetry
#13
Xi Wen, Xiyu Wang, Shuqi Qin, Lorenzo Franchi, Yan Gu
OBJECTIVE: To compare the three-dimensional (3D) morphology of the upper airway in skeletal Class III patients with and without mandibular asymmetry and to investigate the possible underlying correlations between the morphology of the upper airway and mandibular deviation. MATERIALS AND METHODS: Cone-beam computed tomography images of 54 subjects with skeletal Class III malocclusion (ANB angle ≤ 0.4°, Wits ≤ -5.5°) were taken and 3D upper airway models were reconstructed using Dolphin 3D software...
April 18, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28416096/treatment-outcomes-of-archwise-distraction-osteogenesis-in-mandibular-dentoalveolar-retrognathia-cases
#14
C Yöndem, Y B Acar, B C Şener, A N Erverdi
The aim of this study was to describe the treatment of class II malocclusion by sagittal advancement of the alveolar bone in the symphyseal area using an intraoral archwise distractor device and to determine the effects of this method on the dentoalveolar complex. Fifteen patients (10 female, five male) aged 16-20 years with a class II division 2 malocclusion, characterized by mandibular dentoalveolar retrusion and a prominent chin, underwent archwise alveolar distraction in the anterior mandible. Lateral cephalometric radiographs were obtained before distraction (T0), after 6 weeks of consolidation (T1), and after debonding (T2)...
April 13, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28414873/influence-of-pharyngeal-airway-respiration-pressure-on-class-ii-mandibular-retrusion-in-children-a-computational-fluid-dynamics-study-of-inspiration-and-expiration
#15
T Iwasaki, H Sato, H Suga, Y Takemoto, E Inada, I Saitoh, K Kakuno, R Kanomi, Y Yamasaki
OBJECTIVES: To examine the influence of negative pressure of the pharyngeal airway on mandibular retraction during inspiration in children with nasal obstruction using the computational fluid dynamics (CFD) method. SETTING AND SAMPLE POPULATION: Sixty-two children were divided into Classes I, II (mandibular retrusion) and III (mandibular protrusion) malocclusion groups. MATERIAL AND METHODS: Cone-beam computed tomography data were used to reconstruct three-dimensional shapes of the nasal and pharyngeal airways...
May 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28414872/a-scoping-review-of-outcomes-related-to-orthodontic-treatment-measured-in-cleft-lip-and-palate
#16
REVIEW
A Tsichlaki, K O'Brien, A Johal, P S Fleming
The aim of this study was to identify and summarize the outcomes measured in orthodontic studies of children with cleft lip and/or palate. The objectives were to categorize the outcomes into pre-determined domains and to explore whether any domains were under-represented. Electronic databases and grey literature were searched until December 2016 to identify all studies of orthodontic treatment interventions in children and adolescents with cleft lip and palate. Abstracts and subsequently eligible full-text articles were screened independently and in duplicate by two reviewers...
May 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28412180/computational-fluid-dynamics-study-of-the-pharyngeal-airway-space-before-and-after-mandibular-setback-surgery-in-patients-with-mandibular-prognathism
#17
Y Yajima, M Oshima, T Iwai, H Kitajima, S Omura, I Tohnai
The purpose of this study was to investigate the relationship between the pressure drop in the pharyngeal airway space (ΔPPAS) and the minimum cross-sectional area (minCSA) of the pharyngeal airway before and after mandibular setback surgery using computational fluid dynamics, in order to prevent iatrogenic obstructive sleep apnoea. Eleven patients with mandibular prognathism underwent bilateral sagittal split osteotomy for mandibular setback. Three-dimensional models of the upper airway were reconstructed from preoperative and postoperative computed tomography images, and simulations were performed using computational fluid dynamics...
April 12, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28409036/pre-and-postsurgical-orthodontics-in-patients-with-moebius-syndrome
#18
Marisabel Magnifico, Diana Cassi, Ilda Kasa, Marco Di Blasio, Alberto Di Blasio, Mauro Gandolfini
The authors report a combined orthodontic-surgical correction of an adult patient's malocclusion affected by Moebius Syndrome (MS). The treatment was conducted at the Dentistry Unit and the Maxillofacial Surgery Unit of the University Hospital of Parma. Treatment of malocclusion was performed after the correction of facial mimic mobility with smile surgery. The postoperative stability and orthodontic results were good and the correction of the morphological problems related to the syndrome was very satisfactory...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28402422/introduction-and-assessment-of-orthognathic-information-clinic
#19
Nina Bergkulla, Heidi Hänninen, Outi Alanko, Martti Tuomisto, Jukka Kurimo, Aimo Miettinen, Anna-Liisa Svedström-Oristo, Susan Cunningham, Timo Peltomäki
Background/Objectives: Orthognathic treatment is routine practice to rehabilitate severe malocclusions and dentofacial deformities. Because orthognathic treatment is elective, patient's involvement in deciding whether to proceed with treatment is vital. Interaction and communication between patient and treating team plays a key role in achieving post-treatment satisfaction. To achieve satisfaction, an orthognathic 'information clinic' for prospective orthognathic patients was established at Oral and Maxillofacial Unit, Tampere University Hospital, Finland...
April 11, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28402128/effects-of-skeletally-anchored-class-ii-elastics-a-pilot-study-and-new-approach-for-treating-class-ii-malocclusion
#20
Selin Ozbilek, Ahmet Yalcin Gungor, Salih Celik
OBJECTIVE: To evaluate the skeletal, dentoalveolar, and soft tissue effects of skeletally anchored Class II elastics and compare them with a matched control group treated by a monobloc appliance for the correction of skeletal Class II malocclusion due to mandibular retrusion. MATERIALS AND METHODS: Twelve patients (6 girls, 6 boys) were randomly divided into two groups. In the elastics group, six patients (12.9 ± 1.5 years of age; 3 boys, 3 girls) were treated with skeletally anchored Class II elastics...
April 12, 2017: Angle Orthodontist
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