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Orthognatic surgery

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https://www.readbyqxmd.com/read/27694778/lubricin-in-synovial-fluid-of-mild-and-severe-temporomandibular-joint-internal-derangements
#1
R Leonardi, R-E Perrotta, L-E Almeida, C Loreto, G Musumeci
BACKGROUND: To understand the molecular basis of temporomandibular joint (TMJ) pathologies, we aimed to investigate the lubricin levels in the TMJ synovial fluid (SF) of patients with mild to severe internal derangements (IDs). MATERIAL AND METHODS: A total, 34 joints were the study group. Only patients, with a Wilkes stage of III, IV and V were included, in this sample. Control group consisted of SF from eight joints, from patients undergoing to orthognatic surgery...
November 1, 2016: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/27643492/-the-3d-printed-drilling-template-for-bilateral-sagittal-osteotomy
#2
J T Wes, P N W J Houppermans, J P Verweij, G Mensink, N Liberton, J P R van Merkesteyn
The bilateral sagittal osteotomy (BSSO) is a widely used surgical technique within orthognatic surgery. The specific osteotomy design may vary from clinic to clinic. The best position of the bone cuts in a BSSO continues to be a point of discussion and probably differs from patient to patient. In addition, standardisation in, for example, research may be desirable. Pre-operative planning using a drilling template in order to position the planned individual saw cuts during BSSO can be of value. To achieve this goal, a pre-operative 3D printed biocompatible drilling template was manufactured for 1 patient on the basis of pre-operative planning...
September 2016: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/27547067/the-contribution-of-computerized-axiography-to-the-functional-evaluation-of-the-temporomandibular-joint-a-case-report
#3
Alexandra Maria Botos, Anca Stefania Mesaros, Adela Ioana Zimbran
The aim of this case report is to give comprehensive information on the clinical use of computerized axiography (CA) in the evaluation of temporomandibular joint (TMJ) mobility in a patient who undergoes orthognatic surgery. A 20-year-old female patient with class III skeletal anomaly and who underwent orthognatic surgery is presented. Pre- and postsurgical CA recordings for the patient are compared in order to evaluate the functional modifications that appear. The CA is a functional investigation of the TMJ and records the border movements of the mandible: protrusion, lateral movements and open/close...
2016: Clujul Medical (1957)
https://www.readbyqxmd.com/read/27240820/quality-of-life-in-patients-undergoing-orthognathic-surgery-a-two-centered-swedish-study
#4
I Silva, C Cardemil, H Kashani, F Bazargani, P Tarnow, L Rasmusson, F Suska
AIM: Surgical corrections of dentofacial deformities have both physical and psychological impact on quality of life (QoL). The objectives of the present study were to evaluate the impact of oral health related problems on QoL before and after a combination of orthodontic treatment and orthognathic surgery. Additionally, the study aimed to identify correlations between different dentofacial patterns and possible improvements due to treatment. MATERIAL AND METHODS: In a prospective study, we evaluated fifty patients before start of treatment, 6 weeks and 6 months postoperatively...
August 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/26941899/aesthetic-restoration-in-maxillo-mandibular-malformations-the-role-of-genioplasty
#5
Claudio Ungari, Emiliano Riccardi, Gabriele Reale, Alessandro Agrillo, Claudio Rinna, Valeria Mitro, Fabio Filiaci
AIM: The aim of this study was to determinate how orthognatic surgery aids to cure many skull and face abnormalities and to help re-establishing the correct occlusive relation thanks to the repositioning of the maxillo-mandibular skeleton basis. METHODS: The study included 183 male patients and 338 female patients, with an average age of 23 years. The sample series was divided according to specific pathologies. All patients underwent surgical procedures and the therapeutic strategy was determined based on the anomalies presented...
July 2015: Annali di Stomatologia
https://www.readbyqxmd.com/read/26824915/which-cephalometric-analysis-for-maxillo-mandibular-surgery-in-patients-with-obstructive-sleep-apnoea-syndrome
#6
REVIEW
B Brevi, A Di Blasio, C Di Blasio, F Piazza, L D'Ascanio, E Sesenna
Maxillo-mandibular advancement MMA is considered an efficacious treatment for patients affected by severe obstructive sleep apnoea syndrome (OSAS). Even though OSAS improvement is the main goal of MMA, excessive maxillo-mandibular protrusion should be avoided to guarantee pleasant postoperative facial aesthetics. In order to attain such a result, the amount of MMA should be planned preoperatively by both aesthetic and cephalometric analyses. Steiner and Delaire cephalometric analyses are commonly used in the preoperative planning of orthognatic surgery for dentofacial deformities, however controversies still exist about the basis and postoperative aesthetic results of such cephalometric analyses in OSAS patients candidate for MMA...
October 2015: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/26258114/a-novel-method-for-the-management-of-proximal-segment-using-computer-assisted-simulation-surgery-correct-condyle-head-positioning-and-better-proximal-segment-placement
#7
Yong-Chan Lee, Hong-Bum Sohn, Sung-Keun Kim, On-Yu Bae, Jang-Ha Lee
Computer Assisted Simulation Surgery (CASS) is a reliable method that permits oral and maxillofacial surgeons to visualize the position of the maxilla and the mandible as observed in the patient. The purpose of this report was to introduce a newly developed strategy for proximal segment management according to Balanced Orthognathic Surgery (BOS) protocol which is a type of CASS, and to establish the clinical feasibility of the BOS protocol in the treatment of complex maxillo-facial deformities. The BOS protocol consists of the following 4 phases: 1) Planning and simulation phase, 2) Modeling phase, 3) Surgical phase, and 4) Evaluation phase...
December 2015: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/26164798/changes-of-some-functional-speech-disorders-after-surgical-correction-of-skeletal-anterior-open-bite
#8
Mojca Knez Ambrožič, Irena Hočevar Boltežar, Nataša Ihan Hren
Skeletal anterior open bite (AOB) or apertognathism is characterized by the absence of contact of the anterior teeth and affects articulation parameters, chewing, biting and voice quality. The treatment of AOB consists of orthognatic surgical procedures. The aim of this study was to evaluate the effects of treatment on voice quality, articulation and nasality in speech with respect to skeletal changes. The study was prospective; 15 patients with AOB were evaluated before and after surgery. Lateral cephalometric x-ray parameters (facial angle, interincisal distance, Wits appraisal) were measured to determine skeletal changes...
September 2015: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/25957779/a-retrospective-analysis-of-dentofacial-deformities-and-orthognathic-surgeries-using-the-index-of-orthognathic-functional-treatment-need-ioftn
#9
Claire Harrington, James R Gallagher, Ali Borzabadi-Farahani
OBJECTIVES: To assess the functional needs of orthognathic cases treated in Northampton General Hospital using the index of orthognathic functional treatment need (IOFTN). MATERIALS AND METHODS: A retrospective study was conducted on 78 subjects (54 female and 24 males, 10-54 years, mean (SD) age=21.88 (6.98) years) who had orthognatic surgery in Northampton General Hospital or were in preparation for it (5 case). The sample represents a period between February 1997 and December 2014...
July 2015: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/25888040/-the-orthodontic-surgical-approach-revisited
#10
Joseph Ghoubril, Roland Kmeid, Rania Nassar, Elie Amm, Marwan Mansour, Roula Akl
An adequate orthodontic preparation is a key to success of every orthognatic surgery. Therefore, the detection and the correction of the existing dentoalveolar compensation tend to favor the correction of the skeletal defects. The pre-surgical orthodontic goals have to be defined at the beginning of the treatment, thus, not always achieving a complete leveling of the arches, nor a final space closure and ideal intercuspation. The orthodontic preparation aims to guide the surgical skeletal displacements. Many dentoalveolar compensations can be identified as specific to different types of malocclusion...
March 2015: L' Orthodontie Française
https://www.readbyqxmd.com/read/25593870/modified-basal-osteotomy-combined-with-osteogenic-distraction-hemi-wing-distraction-for-correction-of-facial-asymmetry-a-new-technique
#11
Ruben Muñoz, Alvaro Diaz, Jose Golaszewski
Complete restoration of facial asymmetry is always difficult to achieve. Facial asymmetry due to growth disturbances of the jaws almost requires orthognathic surgical correction, followed, in many cases, by soft tissue corrections. Mandibular hypoplasia is the earliest skeletal manifestation of Hemifacial microsomy and the clinical defect becomes worse with the time, due to asymmetric growth and secondary midface deformity accompanying. Despite correction of the occlusal plane, facial asymmetry can persist if the mandibular body differs in height...
July 2014: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/25437945/unexpected-soft-tissue-changes-in-response-to-root-coverage-using-an-acellular-dermal-matrix-allograft-12%C3%A2-year-follow-up
#12
Eraldo L Batista, Josiane E Goergen, Larissa L Machado, Eduardo M Santayana de Lima
A woman undergoing orthodontic treatment presented with recession and reduced keratinized gingiva on teeth 31 and 41. The patient declined creation of a donor site for conventional autogenous connective soft tissue grafting and opted for an acellular dermal matrix soft tissue substitute for root coverage. Orthodontic treatment followed, and the patient returned for orthognatic surgery after 12 years. Long-term follow up revealed that root coverage remained stable over time and creeping attachment on both teeth was observed...
2014: Journal—Canadian Dental Association, Journal de L'Association Dentaire Canadienne
https://www.readbyqxmd.com/read/25356190/tmj-in-facial-class-iii-deformity-condylar-morphology-relations
#13
Gonzalo Muñoz, Sergio Olate, Mario Cantín, Bélgica Vásquez, Mariano Del Sol
Class III dentofacial deformities (DF-III) are classified as a severe functional and esthetic anomaly. This work aims to describe the condylar morphology of subjects with DF-III and indication of correction through orthognatic surgery. A descriptive study was designed in the Division of Oral and Maxillofacial Surgery of the Universidad de La Frontera, Chile, where 14 patients were examined with conventional cephalometric studies to determine the surgical indication; then, cone beam CT images were recorded for the morphometric analyses on the coronal and axial slices, considering linear measurements in the middle, basal and anteroposterior areas...
2014: International Journal of Clinical and Experimental Medicine
https://www.readbyqxmd.com/read/25299023/trismus-pseudocamptodactyly-syndrome-a-20-year-follow-up
#14
T M Marianetti, L Dall'Asta, A Torroni, G Gasparini, S Pelo
BACKGROUND: Trismus-Pseudocamptodactyly Syndrome (TPS) is a rare autosomal syndrome characterised by the inability to open the mouth fully, pseudocamptodactyly, short stature and foot deformities. The maxillofacial feature entails hyperplasia of the coronoid processes which mechanically interfere with the zygomatic processes during mouth opening. CASE REPORT: A 22-year-old girl affected by a severe form of TPS was followed from the age of three years. Bone reossification was observed after two coronoidotomies of both hyperplasic coronoid processes...
July 2014: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/25232392/lefort-i-segmented-osteotomy-experience-with-piezosurgery-in-orthognathic-surgery
#15
Sergio Olate, Leandro Pozzer, Alejandro Unibazo, Claudio Huentequeo-Molina, Felipe Martinez, Márcio de Moraes
The aim of this work was to present the LeFort I segmented osteotomy in consecutive patients using the piezoelectric system. A descriptive study was designed for patients operated on between November 2012 and January 2014. All the patients presented some type of skeletal anomaly and underwent orthognatic surgery via piezoelectric osteotomies. Each maxillary surgery was developed with that system and those patients who also received osteotomies with a reciprocating saw were excluded. Surgical time and complications were analyzed...
2014: International Journal of Clinical and Experimental Medicine
https://www.readbyqxmd.com/read/25049000/-improving-the-esthetic-results-and-patient-satisfaction-in-orthognatic-surgery
#16
REVIEW
D Goga, J Battini, L Belhaouari, R Courtois, C Hardy, T Martin, B Laure
The objectives of dental and maxillary defect management have changed over the last decade. Occlusal improvement is required, but it is expected to come with a good esthetic result for patients, especially for adults, and mentioned or not preoperatively. Thus, the maxillofacial surgeon must include complementary data in his therapeutic scheme, beyond the one provided by the cephalometric analysis. This chapter was drafted in pluridisciplinary mode to this end. A psychological approach and post-operative satisfaction are crucial factors that were studied prospectively (MD Battini and Courtois) and are a part of this chapter...
September 2014: Revue de Stomatologie, de Chirurgie Maxillo-faciale et de Chirurgie Orale
https://www.readbyqxmd.com/read/25043562/-orthognathic-surgery-for-patients-with-cleft-lip-and-palate
#17
REVIEW
C Paulus
Patients with cleft lip and palate frequently develop dento-facial deformity requiring orthognatic surgery. The origin of this deformity is therapeutic and surgeons are currently trying to prevent this iatrogenicity. The maxillary dento-facial deformity in these patients is a retrognathia with infragnathia, associated with endognathia, obliquity of the occlusal plane, with deviation of the superior incisive midline in case of unilateral clefts. The difficulties in the treatment of these skeletal deformities are due to the palatal, labial, and pterygomaxillary scar tissue...
September 2014: Revue de Stomatologie, de Chirurgie Maxillo-faciale et de Chirurgie Orale
https://www.readbyqxmd.com/read/25001548/-condylar-positioning-during-mandibular-orthognatic-surgery
#18
REVIEW
H Bénateau, A Chatellier, N Leprovost, S Ghezal, J F Compère, A Veyssière
Sagittal split osteotomy of the mandible is the most frequently used method in orthognatic surgery. Osteosynthesis was performed with wires in the 1970s. The instability of fixation allowed condyle movements and there was no problem of condylar positioning. The drawback of this technique was that it required a strict intermaxillary fixation for 6 weeks. Osteosynthesis evolved in the 1980s to a rigid and semi-rigid fixation, with no longer any need for an intermaxillary fixation. But accurately determining the condyle position in the fossa is essential when using a rigid fixation, because no spontaneous adaptation is possible...
September 2014: Revue de Stomatologie, de Chirurgie Maxillo-faciale et de Chirurgie Orale
https://www.readbyqxmd.com/read/24962042/a-cbct-study-on-positional-change-in-mandibular-condyle-according-to-metallic-anchorage-methods-in-skeletal-class-iii-patients-after-orthognatic-surgery
#19
Byung-Joon Choi, Yong-Ha Choi, Baek-Soo Lee, Yong-Dae Kwon, Yong-Jin Choo, Joo-Young Ohe
PURPOSE: This study was to evaluate the postoperative stability of the mandibular condyle according to the number of screws in the proximal segment using cone beam computed tomography (CBCT). PATIENTS AND METHODS: Thirty patients diagnosed with skeletal class III malocclusion and underwent sagittal split ramus osteotomy (SSRO) were enrolled in this study. In Group A, 4 screws and a 4-hole miniplate were used for the internal fixation of an osteotomy and 3 screws, only 1 screw in the proximal segment, and a 4-hole miniplate were used in Group B...
December 2014: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/24742425/bilateral-pneumothorax-and-pneumomediastinum-after-orthognathic-surgery
#20
C Corega, L Vaida, D Festila, D Bertossi
The occurrence of postoperative complications after various orthognatic surgery procedures is rare but all of them might be life-threatening complications. We report a case of a 22-year old female patient who underwent a bimaxillary orthognathic surgery procedure and developed bilateral pneumothorax and pneumomediastinum.
March 2014: Chirurgia
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