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Mandibular surgery

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https://www.readbyqxmd.com/read/29667467/mandibular-asymmetries-and-associated-factors-in-orthodontic-and-orthognathic-surgery-patients
#1
Guilherme Thiesen, Bruno F Gribel, Maria Perpétua M Freitas, Donald R Oliver, Ki Beom Kim
OBJECTIVES: To estimate the prevalence of mandibular asymmetries in orthodontic and orthognathic surgery patients and to investigate demographic and skeletal factors associated with this disharmony. MATERIALS AND METHODS: Cone-beam computed tomography images of 1178 individuals aged 19 through 60 years with complete dentitions were analyzed. Outcomes were classified as relative mandibular symmetry, moderate asymmetry, and severe asymmetry. Factors recorded included sex, age, side of mandibular deviation, sagittal jaw relationship, vertical skeletal pattern, angle of the cranial base, and maxillary asymmetry...
April 18, 2018: Angle Orthodontist
https://www.readbyqxmd.com/read/29664148/a-retrospective-study-on-the-crestal-bone-loss-associated-with-different-implant-surfaces-in-chronic-periodontitis-patients-under-maintenance
#2
Luis Gallego, Alberto Sicilia, Pelayo Sicilia, Carmen Mallo, Susana Cuesta, Mariano Sanz
OBJECTIVE: To analyze retrospectively interproximal crestal bone loss (CBL) on external-hex "non-identical" (NI) dental implants with different surface topography, when placed in the same intra-oral location in patients with a history of chronic periodontitis following maintenance care. MATERIAL AND METHODS: The patient population consisted of 206 consecutive patients with a history of chronic periodontitis who underwent implant surgery between 2007 and 2010; 755 NI implants with different implant surfaces were placed at posterior mandibular sites: 72 machined, 145 acid-etched/machined (hybrid), and 538 anodized...
April 17, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29663973/mandibular-incisor-impaction-a-rare-condition
#3
Gabriela Meyge de Brito, Diana Simões, André Wilson Machado
The purpose of this case report is to present the management of an impacted permanent mandibular left central incisor using a removable appliance. A minor surgery was done to expose the tooth crown and bond an orthodontic button. The removable appliance was used to apply extrusion forces to the impacted tooth. Over a course of six months, the tooth was fully erupted. To recover the lost space of the primary canine, a fixed appliance was bonded on the mandibular arch and retention was placed until the permanent canine erupted...
January 15, 2018: Journal of Dentistry for Children
https://www.readbyqxmd.com/read/29662970/does-giving-brief-information-keep-patients-calm-during-different-oral-surgical-procedures
#4
Fatih Cabbar, Muammer Çağrı Burdurlu, Ceyda Özçakır Tomruk
OBJECTIVES: Dental anxiety may play a central role in the oral health status and treatment outcomes of oral surgical procedures. The study aimed to investigate the effect that brief written information has over patients undergoing oral surgical procedures and to evaluate factors that may cause anxiety. METHOD AND MATERIALS: A prospective study was performed on 38 mandibular third molar surgery patients (mean age 26.74 ± 6.44 years) and 56 implant surgery patients (mean age 49...
April 16, 2018: Quintessence International
https://www.readbyqxmd.com/read/29659175/extracranial-course-of-the-facial-nerve-revisited
#5
P Martínez-Pascual, E Maranillo, T Vázquez, C Simón, J M Lasso, J R Sanudo
INTRODUCTION: The extrapetrous course of the facial nerve has been a matter of study and debate since XIX century. Two different classifications have been classically proposed and widely accepted by most of the authors. Nevertheless, there are reported cases which do not fit in any of those. The aim of this study is to propose a new and useful classification. MATERIAL AND METHODS: We have used 23 embalmed Caucasian adult cadavers (11male and 12 female) belonging to the Bodies Donation and Dissecting Rooms Centre of the University Complutense of Madrid...
April 16, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29658566/peek%C3%A2-biphasic-bioceramic-composites-promote-mandibular-defect-repair-and-upregulate-bmp%C3%A2-2-expression-in-rabbits
#6
Hedong Yu, Yongji Chen, Min Mao, Dongyan Liu, Jun Ai, Weidong Leng
The present study aimed to investigate whether bone morphogenetic protein‑2 (BMP‑2) was involved in the repair of mandibular defects using polyether‑ether‑ketone biphasic bioceramic (PEEK‑BBC) composites in rabbits. PEEK‑BBC composites with abundant and interconnected pores were prepared by calcination and characterized by scanning electron microscope. A mandibular defect model in rabbits was established using dental grinder to produce a square hole. A total of 60 rabbits were divided into four groups: Control, sham, surgery, and PEEK...
April 11, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29657237/management-of-sternal-dislocation-with-and-without-surgery-in-cats-owner-assessed-long-term-follow-up-of-two-clinical-cases
#7
Gab-Chol Choi, Md Mahbubur Rahman, Hwangmin Kim, Sehoon Kim, In-Seong Jeong
The aim of this paper is to report two cases of sternal dislocation (SD) in cats and the long-term outcomes with and without surgery. In a cat with poly-traumatized SD (Case 1), mandibular, radial, and ulnar fractures were corrected first, and the SD was allowed to heal without intervention for 14 months. However, normal healing did not occur and sternal instability remained. Therefore, the SD was corrected surgically, and the cat recovered fully within 4 weeks. In a cat with isolated SD (Case 2), surgery was performed, and normal posture and gait were regained after 5 weeks...
April 16, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29657072/appearance-on-face-reading-cheek-line-after-orthognathic-surgery
#8
Y-C Tseng, H-J Chen, J-H Cheng, P-H Chen, C-Y Pan, S-T Chou, C-M Chen
The cheek line (face reading) is an aesthetic element of the facial profile. The purpose of our study was to investigate the changes in the cheek line after mandibular setback surgery. Forty patients (20 female and 20 male, mean (SD) age 22 (5) years) were diagnosed with mandibular prognathism and treated by intraoral vertical ramus osteotomy alone. Cephalograms were obtained before operation (T1), at least a year postoperatively (T2), and final surgical changes over a year (T2-T1). The cheek line and landmarks (soft and hard tissues) were compared using the paired t test...
April 12, 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29652756/radiological-evaluation-of-the-dimensions-of-lower-molar-alveoli
#9
Claudio Agostinelli, Agnese Agostinelli, Marco Berardini, Paolo Trisi
PURPOSE: The aim of the present radiological study was to analyze the alveolar bone morphology of the lower molars in physiological conditions. The main goal is to describe the bone anatomy of a hypothetically postextractive site in lower molar area. MATERIALS AND METHODS: Computed tomography scans of 100 patients were examined. Axial, paraxial, and Panorex sections were analyzed using a dedicated software. Precise reference points were encoded to make the bone measurements clear and repeatable...
April 12, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29652024/intra-alveolar-extraction-of-impacted-distoangular-mandibular-third-molars-a-novel-technique
#10
K Santhosh Kumar, A Emmanuel Dhiravia Sargunam, C Ravindran, Gvv Giri
Recent trends in maxillofacial surgery are to reduce the trauma to the adjacent soft tissue. The distoangular impaction presents a challenge to the maxillofacial surgeon and also results in more surgical morbidity. Here, we present a minimally invasive extraction technique for the distoangular mandibular third molar impaction.
March 2018: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/29651386/tissue-engineering-in-maxillary-bone-defects
#11
Azizollah Khodakaram-Tafti, Davood Mehrabani, Hanieh Shaterzadeh-Yazdi, Barbad Zamiri, Mahsa Omidi
BACKGROUND: Restoration of craniofacial bone defects has been a concern for oral and maxillofacial surgeons. In this study, the healing effect of fibrin glue scaffold was compared with autologous bone graft in mandibular defects of rabbit. METHODS: Bilateral unicortical osteotomy was performed in the diastema region of 10 male Dutch rabbits. The subjects were randomly divided into 2 equal groups. The mandibular defect on the right side was treated with fibrin glue scaffold and the defect on the left side with autologous bone graft provided from iliac crest...
January 2018: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/29650475/use-of-patient-reported-outcome-measures-in-oral-and-maxillofacial-trauma-surgery-a-review
#12
REVIEW
R Ologunde, N M H McLeod
In the UK, about one person/100/year sustains a facial injury, so trauma surgery accounts for a considerable part of the caseload in oral and maxillofacial surgery (OMFS). Patient-reported outcome measures (PROM) allow for patient-centred assessment of postoperative outcomes, but to our knowledge, most research in OMFS trauma does not currently include them. To investigate their use, we searched Medline to find relevant studies that reported outcomes from inception in January 1879 to August 2016. Those not in the English language and those that did not report operations were excluded...
April 9, 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29629438/influence-of-leukocyte-and-platelet-rich-fibrin-l-prf-on-the-outcomes-of-impacted-mandibular-third-molar-removal-surgery-a-split-mouth-randomized-clinical-trial
#13
Povilas Daugela, Vaidas Grimuta, Dalius Sakavicius, Juozas Jonaitis, Gintaras Juodzbalys
OBJECTIVES: The purpose of this study was to evaluate the influence of leukocyte- and platelet-rich fibrin (L-PRF) on impacted mandibular third molar (IMTM) extraction wound healing, patient postoperative discomfort, and incidence of alveolar osteitis. METHOD AND MATERIALS: Thirty-four patients (20 female, 14 male) who met the inclusion criteria for this split-mouth randomized clinical trial were enrolled and 30 patients completed the study. Patients were randomized and underwent bilateral IMTM surgical extractions...
2018: Quintessence International
https://www.readbyqxmd.com/read/29628168/effect-of-a-domiciliary-facial-cooling-system-on-generic-quality-of-life-after-removal-of-mandibular-third-molars
#14
A N Beech, S Haworth, G J Knepil
To evaluate quality of life (QoL) and patients' perceptions of a domiciliary facial cooling system (Hilotherm® , Hilotherapy UK Ltd, Coventry, UK), we asked 30 patients to complete a paper-based EQ-5D-3L QoL questionnaire (EuroQol Group 1990, Rotterdam, The Netherlands) each day for seven days after the removal of mandibular third molars. They were returned by 14 of the 20 patients who had not used the system and by all 10 who had. Patients aged between 18 and 25 who had their teeth removed in outpatients (in accordance with National Institute for Health and Care Excellence guidelines) under general anaesthesia (American Association of Anesthesiologists (ASA) class I or II) and did not smoke, were included...
April 5, 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29627367/development-of-a-patient-specific-temporomandibular-joint-prosthesis-according-to-the-groningen-principle-through-a-cadaver-test-series
#15
J Kraeima, B J Merema, M J H Witjes, F K L Spijkervet
OBJECTIVES: Patients suffering from osteoarthritis, ankylosis (e.g. post-trauma or tumour) in the temporomandibular joint (TMJ) can present with symptoms such as severely restricted mouth opening, pain or other dynamic restrictions of the mandible. To alleviate the symptoms, a total joint prosthesis can be indicated, such as the Groningen TMJ prosthesis. This was developed as a stock device with a lowered centre of rotation for improved translational and opening capacity. This study aimed to improve the design of the prosthesis, and produce a workflow for a customized Groningen TMJ prosthesis, in order to make it more accurate and predictable...
March 14, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29626447/hemimandibular-hyperplasia-correction-by-simultaneous-orthognathic-surgery-and-condylectomy-under-digital-guidance
#16
Bing Han, Xing Wang, Zili Li, Biao Yi, Cheng Liang, Xiaoxia Wang
PURPOSE: Orthognathic surgery with simultaneous condylectomy under digital guidance has been proved to be a feasible method to treat hemimandibular hyperplasia (HH). The objective of this study was to evaluate the effects and precision of correction of HH by use of this method. PATIENTS AND METHODS: This was a case-series study. Fourteen patients with HH who had undergone simultaneous bimaxillary orthognathic surgery and condylectomy from January 2016 to April 2017 were included in this study...
March 15, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29625584/temporomandibular-joint-regeneration-proposal-of-a-novel-treatment-for-condylar-resorption-after-orthognathic-surgery-using-transplantation-of-autologous-nasal-septum-chondrocytes-and-the-first-human-case-report
#17
Ricardo de Souza Tesch, Esther Rieko Takamori, Karla Menezes, Rosana Bizon Vieira Carias, Cláudio Leonardo Milione Dutra, Marcelo de Freitas Aguiar, Tânia Salgado de Sousa Torraca, Alexandra Cristina Senegaglia, Cármen Lúcia Kuniyoshi Rebelatto, Debora Regina Daga, Paulo Roberto Slud Brofman, Radovan Borojevic
BACKGROUND: Upon orthognathic mandibular advancement surgery the adjacent soft tissues can displace the distal bone segment and increase the load on the temporomandibular joint causing loss of its integrity. Remodeling of the condyle and temporal fossa with destruction of condylar cartilage and subchondral bone leads to postsurgical condylar resorption, with arthralgia and functional limitations. Patients with severe lesions are refractory to conservative treatments, leading to more invasive therapies that range from simple arthrocentesis to open surgery and prosthesis...
April 7, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29625030/is-counterclockwise-rotation-with-double-jaw-orthognathic-surgery-stable-in-the-long-term-in-hyperdivergent-class-iii-patients
#18
Yasemin Bahar Acar, Necip Fazıl Erdem, Ahmet Hüseyin Acar, Ahmet Nejat Erverdi, Kemal Ugurlu
PURPOSE: To evaluate the long-term postsurgical stability of counterclockwise rotation of the occlusal plane (OP) in double-jaw orthognathic surgery in patients with hyperdivergent Class III malocclusion. MATERIALS AND METHODS: This retrospective cohort study evaluated the postsurgical stability of orthognathic surgery in patients with skeletal Class III malocclusion and counterclockwise rotation of the maxillomandibular complex with an OP change of at least -2°...
March 15, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29625028/effectiveness-of-drainage-in-mandibular-third-molar-surgery-a-systematic-review-and-meta-analysis
#19
REVIEW
Shaopeng Liu, Zhu You, Chuan Ma, Ye Wang, Huaqiang Zhao
PURPOSE: The purpose of this study was to provide an evidence-based evaluation of the impact of surgical drainage after the removal of mandibular third molars. MATERIALS AND METHODS: The Medline (PubMed), Cochrane Library, and Web of Science databases were searched to identify randomized controlled trials up to September 1, 2017. Postoperative variables, including facial swelling, trismus, and pain, were calculated early (2 to 3 days) and late (5 to 7 days) after the removal of impacted mandibular third molars...
March 15, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29624863/prevalence-and-measurement-of-anterior-loop-of-the-mandibular-canal-using-cbct-a-cross-sectional-study
#20
Pradeep Christopher J, Thenaruvi Marimuthu, Krithika C, Poorna Devadoss, Santhosh M Kumar
BACKGROUND: Anterior loop of the mental nerve is a very important anatomic landmark in implant placement and anterior mandibular osteotomies. PURPOSE: Two-dimensional imaging techniques are not competent enough to locate and measure the mental nerve loop in majority of the cases. Any injury to this loop results in pain/paresthesia/numbness in the region supplied by the mental nerve. The aim of this study is to analyze the prevalence and measure the length of the loop using cone beam computerized tomography (CBCT) and calculate the average length and prevalence so that a safe margin can be given while placing the implants or the osteotomy cuts in the premolar region...
April 6, 2018: Clinical Implant Dentistry and related Research
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