Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 14.157
Filtrar
1.
Stomatologiia (Mosk) ; 99(3): 47-51, 2020.
Artículo en Ruso | MEDLINE | ID: mdl-32608949

RESUMEN

Correction of the lower jaw contours is one of the most popular tasks in aesthetic maxillofacial surgery. There are many reduction operations aimed at changing the shape of the lower jaw. However, augmentation mandible plasty is mainly associated with the use of synthetic implants. In 2013, A. Triaca published a paper «chin wing technique¼ in detail, which we used as a prototype. In this article, we will present the technique and experience of using osteoplastic three-dimensional mandible plasty, which has a number of special features: the increase in the bigonial width is due to the median vertical osteotomy of the free lower edge of the lower jaw, followed by lateralization of the distal parts of the lower fragments, osteosynthesis is performed using the original trapezoidal titanium mini-plate. Since 2018 30 patients have been operated on with different variants of the anatomy of the lower jaw with requirements for increasing the projection of the chin, increasing the width of the lower third of the face and changing the contour of the mandible. The mandible plasty proposed by us allows us to achieve good aesthetic results and can replace the use of synthetic implants.


Asunto(s)
Estética Dental , Procedimientos Quirúrgicos Reconstructivos , Cara , Humanos , Mandíbula/cirugía , Osteotomía
2.
Hua Xi Kou Qiang Yi Xue Za Zhi ; 38(3): 338-342, 2020 Jun 01.
Artículo en Chino | MEDLINE | ID: mdl-32573145

RESUMEN

Adequate bone volume is the primary condition for successful dental implants. However, sufficient bone volume is often encountered in the vertical direction, but the bone volume in the buccolingual direction is insufficient, making it less suitable to be implanted. If the traditional spitting technique is used in the mandible, fracture and necrosis can easily occur in the labial (buccal) bone plate due to the absence of elasticity, thick cortical bone, poor blood supply, and anastomotic branch. The two-stage ridge splitting technique can be used in patients with narrow alveolar ridge in the mandible. This study summarizes the principles and conditions of application, operational points, clinical efficacy, and analysis of the causes of buccal bone plate absorption.


Asunto(s)
Pérdida de Hueso Alveolar , Aumento de la Cresta Alveolar , Implantes Dentales , Proceso Alveolar , Trasplante Óseo , Implantación Dental Endoósea , Humanos , Mandíbula/cirugía
3.
Artículo en Inglés | MEDLINE | ID: mdl-32559036

RESUMEN

This case report describes the minimally invasive full fixed rehabilitation of a totally edentulous severely atrophic mandible. The patient refused to undergo any other treatment, from the reconstructive surgery to the removable prosthesis, and asked for a fixed minimally invasive solution in the shortest possible time. Considering that the posterior mandibular bone was inadequate in height and that the interforaminal bone was only 4.3 to 5 mm in height, the patient received four 4-mm-ultrashort implants in the interforaminal area that were immediately loaded. Within all the limitations of this case report this procedure in this specific case appears successful through 2 years of loading.


Asunto(s)
Implantes Dentales , Arcada Edéntula/cirugía , Atrofia , Implantación Dental Endoósea , Prótesis Dental de Soporte Implantado , Prótesis de Recubrimiento , Humanos , Mandíbula/cirugía , Resultado del Tratamiento
4.
J Biol Regul Homeost Agents ; 34(1 Suppl. 2): 7-11, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32270662

RESUMEN

The rehabilitation of the edentulous mandible is a relatively common clinical problem and dentatl implants are popular medical device routinely use in daily practice. Recently a new type of two-piece spiral implants has been introduced in the market. Here a retrospective study is reported. A total of 54 two-piece implants were inserted in mandible in the period between June and December 2017, 30 in female and 24 in males. The median age was 53 ± 8. Implants replaced 11 incisors, 6 cuspids, 23 premolars and 14 molars. Implant' length was 10 mm, 11,50 mm and 13 mm in 16, 19 and 19 cases, respectively. Implant' diameter was 3.3 mm, 3.75 mm and 4.2 mm in 22, 13, 19 cases, respectively. Twenty two fixtures were placed in totally edentulous patient and 32 in partially edentulous subjects. There were 4 single crowns, 28 implants bearing two or greater bridges, 4 removable dentures and 18 supporting Toronto bridge. The overall mean follow-up was 13 ± 2 months. One implant was lost so that survival rate (SVR) was 98.15%. Then peri-implant bone resorption (success rate, SCR) was used to investigate peri-implant bone stability. No implant have a crestal bone resorption greater than 1.5 mm so that the implants studied are reliable devices for oral rehabilitation with a very high SCR and SVR.


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales , Mandíbula/cirugía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
5.
J Biol Regul Homeost Agents ; 34(1 Suppl. 2): 13-17, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32270663

RESUMEN

Oral rehabilitation by means dental implants has high standards of success. Recently, a new type of two-pieces spiral implants has been introduced in the market. Since few reports focus of the efficacy of this medical device as a reliable tool for oral rehabilitation, here a retrospective study is reported. In the period June-December 2017 one hundred and two spiral fixtures were inserted, half in females and 51 in males. The median age was 56 ± 8 (min-max 36-73 years). Forty-eight implants were inserted in upper jawbone and 54 in mandible. Two implants were lost and thus survival rate (SVR) is 99.9%. Then peri-implant bone resorption was used to investigate the clinical success (success rate, SCR) over time. No implants have a crestal bone resorption greater than 1.5 mm in the first year follow up. No studied variable has an effect on clinical outcome. In conclusion the studied implants have high SCR and SVR so that they are good tools for oral rehabilitation.


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales , Mandíbula/cirugía , Maxilar/cirugía , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
6.
Clin Ter ; 171(2): e110-e113, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32141481

RESUMEN

Osteoradionecrosis (ORN) is a well-recognized, debilitating complication of radiotherapy for patients with head and neck cancer. There is no universally accepted treatment for ORN of the jawbones. We report on a case of refractory mandibular ORN treated by sequestrectomy of mandible and autogenous transplantation of fat graft combined with platelet-rich fibrin (PRF). Improved perfusion was observed using the laser Doppler flowmetry. This case highlights the use of autogenous free fat graft and PRF as an adjunct therapy to sequestrectomy in the management of ORN.


Asunto(s)
Tejido Adiposo/trasplante , Enfermedades Mandibulares/terapia , Osteorradionecrosis/terapia , Fibrina Rica en Plaquetas , Terapia Combinada , Humanos , Masculino , Mandíbula/cirugía , Enfermedades Mandibulares/cirugía , Persona de Mediana Edad , Factores de Riesgo , Cicatrización de Heridas
7.
Medicine (Baltimore) ; 99(3): e18875, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-32011513

RESUMEN

RATIONALE: In surgery of the lower jaw, the application of computer-assisted navigation is complicated and challenging due to the mobile nature of the mandible. In this study, we presented a computer-assisted navigation surgery for removal of the foreign body in the lower jaw with a mandible reference frame, basing on the strategy that the mandible is independent as an entity. PATIENT CONCERNS: A 41-year-old male patient, identified as having a broken fissure bur that displaced into the mandibular lingual soft tissue, was referred to our department. The fissure bur broke accidentally and then displaced into the soft tissue when the patient underwent extraction of the left mandibular impacted third molar. DIAGNOSIS: A metallic foreign body in the left lower jaw, confirmed by orthopantomography. INTERVENTIONS: A computer-assisted navigation surgery with a customized mandible reference frame. OUTCOMES: The broken bur was removed successfully. Satisfactory wound healing and mouth opening was achieved, without postoperative complications. LESSONS: Surgeons should be alert to the presence of broken bur in the lower jaw and avoid its displacement into deep facial space, and computer-assisted navigation with a mandible reference frame is recommended for removal of the foreign body in the lower jaw.


Asunto(s)
Cuerpos Extraños/cirugía , Mandíbula/cirugía , Cirugía Asistida por Computador , Adulto , Cuerpos Extraños/diagnóstico por imagen , Humanos , Masculino , Mandíbula/diagnóstico por imagen , Radiografía Panorámica
8.
Niger J Clin Pract ; 23(2): 205-211, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32031095

RESUMEN

Aim: The aim of this retrospective study is to determine the level of visibility of the lingual foramen in panoramic radiography using cone-beam computed tomography (CBCT) as a reference tool. Method: A total of 200 patients (111 females and 89 males) were included in the study. Cross-sectional CBCT images of the mandible in the midline were used to locate and define the orifice and diameter of each lingual canal that was detected. The appearance of the lingual foramen in the anterior mandible in panoramic radiography was assessed using a five-point ordinal scale. Descriptive statistics including tables and graphs were used. The correlation between CBCT and panoramic radiography findings were analyzed using Chi-square tests. Results: The lingual foramen was found to be located most frequently in the mandibular midline, above the genial tubercle (78.5%). A narrow-diameter type was found to occur most frequently (56.5%). A prominent genial tubercle was the most commonly found type (57.5%). The lingual foramen could be definitively identified in panoramic radiographs in only 8 cases (4%), while a high degree of probability was found in 25 cases (12.5%). The lingual foramen appears wider and therefore more distinctive in panoramic radiographs when the angulation of the lingual canal is less than 20° to the ground plane. Conclusions: Radiological evaluation with panoramic radiographs alone may lead to inadequate assessments prior to surgical procedures involving the anterior mandible. Clinicians may consider using three-dimensional imaging for procedures with a risk of hemorrhagic and neurosensory complications such as dental implant placement in the anterior mandible.


Asunto(s)
Tomografía Computarizada de Haz Cónico/métodos , Imagenología Tridimensional , Mandíbula/diagnóstico por imagen , Nervio Mandibular/diagnóstico por imagen , Radiografía Panorámica/métodos , Adulto , Biometría , Estudios Transversales , Implantes Dentales , Femenino , Humanos , Masculino , Mandíbula/inervación , Mandíbula/cirugía , Persona de Mediana Edad , Interpretación de Imagen Radiográfica Asistida por Computador , Estudios Retrospectivos , Adulto Joven
9.
Niger J Clin Pract ; 23(2): 240-245, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32031100

RESUMEN

Aims: Le Fort I (LI) osteotomy has been used for the correction of dento-facial deformities of the midface. The aim of this study was to determine the effects of advancement and impaction of the maxilla with LI osteotomy on the nasal cavity and septum. Patients and Methods: In this study, 40 adult patients, 23 females and 17 males (mean age 20.52 ± 4.4 years), who underwent single-piece LI advancement and impaction surgery combined with a bilateral sagittal split osteotomy (BSSO) were included. Posterior-anterior (PA) and lateral cephalometric radiographs taken before surgery (T0) and at least three months after surgery (T1) were evaluated. The superior and anterior movements of maxilla, changes of the nasal cavity, nasal septum and maxillo-mandibular parameter were measured on the cephalometric radiographs. Treatment changes were statistically analyzed using paired sample t-test, and Pearson correlation analysis was applied for the determination of the relationship between variables. Results: There was no statistically significant change in the deviation parameters (P > 0,05). However, a statistically significant decrease was found for left and right nasal cavity heights after LI osteotomy (P < 0.05). Furthermore, no significant correlation was found between septal deviation angle and extent of maxillary movement (P > 0.05). Positive correlation was found between nasal cavity width and amount of maxillary impaction. (P < 0.05). Conclusion: The influence of maxillary impaction with LI osteotomy on nasal septum deviation was not found significant but maxillary impaction with LI osteotomy significantly increased the nasal cavity width.


Asunto(s)
Mandíbula/cirugía , Maxilar/cirugía , Tabique Nasal/diagnóstico por imagen , Deformidades Adquiridas Nasales/etiología , Cirugía Ortognática/métodos , Osteotomía Le Fort/métodos , Complicaciones Posoperatorias , Adolescente , Femenino , Humanos , Masculino , Cavidad Nasal , Tabique Nasal/cirugía , Osteotomía Le Fort/efectos adversos , Estudios Retrospectivos , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Adulto Joven
10.
J Craniofac Surg ; 31(2): e156-e161, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31977697

RESUMEN

The term osteomyelitis of the jaws identifies different pathological patterns characterized by the involvement of the cortical bone and bone marrow in osteoarticular infections.At the head and neck level, the segment most affected by osteomyelitis is the mandible and in most of the cases the cause of the infection is bacterial, as a result of pulp or periodontal infections, post-extraction alveolitis, foreign bodies and fractures. The mandibular PCO often presents with an insidious onset, without a striking acute phase, and it is characterized by recurrent episodes of pain, swelling, lockjaw, latero-cervical lymphadenopathy, without signs of suppuration.Three patients have been collected and recorded for the study.The authors believe that in the more advanced cases of PCO in adult patients, in which the mandibular bone appears almost entirely sclerotic and deformed, and that are not responsive to pharmacological therapy or to conservative surgical therapies such as decortication, it is necessary to perform a complete removal of the portion affected by osteomyelitis, with lower alveolar nerve preservation and contextual reconstruction with free microvascular bone flap.Our review aims to describe the clinico-pathological features of a rare pathological entity, propose a surgical treatment algorithm using computer-aided-design/computer-aided manufacturing technology and review the existing literature.


Asunto(s)
Enfermedades Maxilomandibulares/cirugía , Mandíbula/cirugía , Osteomielitis/cirugía , Adulto , Enfermedad Crónica , Diseño Asistido por Computadora , Femenino , Colgajos Tisulares Libres/cirugía , Humanos , Enfermedades Maxilomandibulares/diagnóstico por imagen , Masculino , Mandíbula/diagnóstico por imagen , Reconstrucción Mandibular , Osteomielitis/diagnóstico por imagen , Adulto Joven
11.
J Craniofac Surg ; 31(2): 448-452, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31977701

RESUMEN

BACKGROUND: As the pursuit of higher self-attractiveness grows, an increasing number of middle-aged people are unsatisfied with their facial contour and required osteotomy. However, for these patients, performing osteotomy only would accelerate the aging process. Herein, the authors put forward simultaneous surgery for contouring the prominent zygoma and mandible with facelift for elderly patients. METHODS: Patients were divided into 3 groups: group A with prominent mandible, group B with protruding zygoma, and group C with prominent mandible and zygoma. By implementing intraoral incision, outer cortex grinding, mandibular angle curved osteotomy, and reduction malarplasty were performed. Through facelift incision, the zygomatic arch was reduced and facelift was conducted. Patients were followed up for at least 12 months and were asked to evaluate their experience. RESULTS: From March 2009 to January 2018, a total of 55 patients received the surgery: 17 patients received mandibular angle osteotomy and facelift, 22 received malarplasty and facelift, and 16 underwent mandible and zygoma contouring and facelift. The recovery process was uneventful, with only 2 patients in group A and 1 patient in group C who suffered from a hematoma, which relieved without surgical intervene. The postoperative images showed smoother facial contours. Patients were satisfied with surgical outcomes. Significant improvements were seen comparing pre- and postoperative photos. CONCLUSION: Conducting osteotomy and rhytidectomy concurrently results in smooth facial contour and youthful appearance which improves patients' self-image and contributes to high patients' satisfaction. With a low complication rate and no long-term complication, the surgery is safe to perform. LEVEL OF EVIDENCE: Level IV, the case study.


Asunto(s)
Mandíbula/cirugía , Cigoma/cirugía , Femenino , Hematoma , Humanos , Masculino , Persona de Mediana Edad , Osteotomía , Satisfacción del Paciente , Periodo Posoperatorio , Procedimientos Quirúrgicos Reconstructivos , Ritidoplastia , Herida Quirúrgica
12.
Medicine (Baltimore) ; 99(2): e18069, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31914012

RESUMEN

This study aims to find and locate foramens exactly in maxilla and mandible in case of complications during surgeries.Computer topographic angiography (CTA) images of 120 cases were reviewed. The measurements were performed on coronal, sagittal and axial planes after the 3 dimension volume reconstruction. The distances among foramens, bony landmarks, teeth, and facial artery were all measured with the angles as adjustments.The incisive foramen (IF) was measured 20.55 ±â€Š2.81 mm to margo inferior of incisor, and 45.27 ±â€Š5.27 degree from the axial midline. The greater palatine foramen located 43.17 ±â€Š2.55 mm from the IF, while 21.08 ±â€Š3.75 degree from the midline in axial plane. The lesser palatine foramina located 44.56 ±â€Š5.74 mm from the IF and 20.05 ±â€Š3.59 degree to the midline. The Mandibular foramen (MBF) was 91.15 ±â€Š1.86 mm horizontally to the margo inferior of incisor. The angle that the MBF-margo inferior of incisor line made with the axial midline was 31.25 ±â€Š2.89 degree. The shortest horizontal distance from the mental foramen (MF) to the facial artery in sagittal plane was 21.90 ±â€Š1.86 mm, while it became 13.00 ±â€Š2.05 mm in coronary section. The horizontal distance from the MF to the margo inferior of incisor in sagittal plane was 22.04 ±â€Š3.22 mm. It turned out to be 25.78 ±â€Š5.23 mm between MF and mid-sagittal line in coronary section. The vertical distance was 25.20 ±â€Š3.06 mm from the upper margin of the second premolar to the MF.The foramens were clearly seen through CTA. Moreover, linear and angular measurements were presented, which makes it safer and wiser for surgeons to consider the biometric data before operations.


Asunto(s)
Puntos Anatómicos de Referencia/diagnóstico por imagen , Angiografía por Tomografía Computarizada/métodos , Mandíbula/anatomía & histología , Foramen Mental/diagnóstico por imagen , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Arterias , Huesos/diagnóstico por imagen , Huesos/cirugía , Niño , Cara/irrigación sanguínea , Cara/diagnóstico por imagen , Femenino , Humanos , Incisivo/anatomía & histología , Incisivo/diagnóstico por imagen , Masculino , Mandíbula/diagnóstico por imagen , Mandíbula/patología , Mandíbula/cirugía , Foramen Mental/cirugía , Persona de Mediana Edad , Adulto Joven
13.
Orv Hetil ; 161(2): 67-74, 2020 Jan.
Artículo en Húngaro | MEDLINE | ID: mdl-31902234

RESUMEN

Gorlin-Goltz syndrome is an autosomal dominant hereditary disease. Its leading symptoms include keratocysts of the jaws, multiple basal cell carcinomas, skeletal abnormalities, intracranial calcifications and dyskeratosis of the soles and palms. One of the most common and often firstly discovered symptoms is the single or multiplex keratocysts of the jaws. The authors present a case of a child, diagnosed in their orthodontic department. Despite the rare occurrence of the disease, an early detection is important, especially in young patients. Regular follow-up and timely care for patients may avoid life-threatening malformations and radical surgical treatments. Orv Hetil. 2020; 161(2): 67-74.


Asunto(s)
Síndrome del Nevo Basocelular/diagnóstico , Calcinosis , Disqueratosis Congénita , Procedimientos Quirúrgicos Orales/métodos , Administración Oral , Síndrome del Nevo Basocelular/cirugía , Síndrome del Nevo Basocelular/terapia , Niño , Estudios de Seguimiento , Humanos , Mandíbula/cirugía , Soportes Ortodóncicos
14.
J Craniofac Surg ; 31(1): e81-e82, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31652213

RESUMEN

The authors report a rare case of intraosseous hemangioma of the mandible in a 14-year-old male. Surgical intervention with embolization is as important as histological and radiological examination to reduce the bleeding complication. Magnetic resonance angiography is paramount of importance in these lesions to detect the supplier arteries.


Asunto(s)
Hemangioma/cirugía , Mandíbula/cirugía , Cráneo/anomalías , Columna Vertebral/anomalías , Malformaciones Vasculares/cirugía , Adolescente , Embolización Terapéutica , Hemangioma/patología , Humanos , Masculino , Mandíbula/patología , Procedimientos Quirúrgicos Reconstructivos , Cráneo/patología , Cráneo/cirugía , Columna Vertebral/patología , Columna Vertebral/cirugía , Malformaciones Vasculares/patología
15.
J Craniofac Surg ; 31(1): 222-225, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31633663

RESUMEN

INTRODUCTION: Mandibular distraction osteogenesis (MDO) is an effective treatment for severe micrognathia, as it helps to avoid tracheostomy but has some adverse effects on the temporomandibular joint (TMJ). TMJ ankylosis is a serious condition leading to feeding difficulties and growth impairment, and could result in worse consequences in cases with micrognathia who already have limited growth potential. Here, we aimed to report on cases with TMJ ankylosis-a rare but devastating complication of MDO. In total, we described 3 syndromic cases with TMJ ankylosis that developed after MDO and reviewed the associated literature. MATERIAL AND METHODS: We retrospectively enrolled 3 patients who presented with TMJ ankylosis following MDO at the Oral and Maxillofacial Surgery Department of the University Hospital of Lille, France. RESULTS: All 3 patients had craniofacial syndrome with micrognathia. MDO was performed at least twice in each case, and the 3 patients developed subsequent TMJ ankylosis. They all presented with TMJ ankylosis and micrognathia in our Department. DISCUSSION: MDO leads to a certain amount of stress on the TMJ, and in cases with congenital TMJ deformation, such stress could lead to TMJ ankylosis. To our knowledge, 12 cases of TMJ ankylosis after MDO have been described in studies involving 309 patients while it is not reported in other publications. They were all syndromic patients. Thus, TMJ health should be carefully monitored during and after MDO to avoid TMJ ankylosis, and alternative treatments such as costochondral grafts should be considered.


Asunto(s)
Anquilosis/cirugía , Mandíbula/cirugía , Trastornos de la Articulación Temporomandibular/cirugía , Anquilosis/diagnóstico por imagen , Niño , Preescolar , Femenino , Humanos , Masculino , Mandíbula/diagnóstico por imagen , Micrognatismo/diagnóstico por imagen , Micrognatismo/cirugía , Osteogénesis por Distracción , Estudios Retrospectivos , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Resultado del Tratamiento
16.
J Craniofac Surg ; 31(1): e84-e89, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31634311

RESUMEN

Agnathia-otocephaly complex (AOC) is a rare malformation complex of the first pharyngeal arch that is characterized by agnathia/dysgnathia, microstomia, aglossia/hypoglossia and variable displacement of the ears. Only 11 post-infancy patients with severe AOC have been described in the literature, and the incidence of this malformation complex is estimated to be 1 per 70,000 births. In this brief clinical study, the authors describe the case of an 18-year-old female diagnosed with AOC who underwent a 3-step mandibular distraction protocol with an external distraction device. The surgical protocol the authors used was unique in that we first placed a tissue expander in the submental area to enlarge the skin envelope in an effort to mitigate skeletal relapse from soft tissue forces. Furthermore, the way in which the authors slowed the activation of the distraction device to allow for soft tissue healing behind the pins was a novel component of the patient's treatment. The 3-step mandibular distraction protocol the authors present in this study increased the length of the mandible by 20 mm, and nearly doubled the size of the patient's mandible from an initial volume of 3.62 cm to a post-operative volume of 6.89 cm. Future surgeries will aim to improve the function of our patient's expanded mandible. Most important of all, the surgical treatment authors are presenting led to a significant improvement in our patient's physical appearance and 3d quality of life.


Asunto(s)
Anomalías Craneofaciales/cirugía , Anomalías Maxilomandibulares/cirugía , Mandíbula/cirugía , Adolescente , Anomalías Craneofaciales/diagnóstico por imagen , Femenino , Humanos , Anomalías Maxilomandibulares/diagnóstico por imagen , Mandíbula/diagnóstico por imagen , Osteogénesis por Distracción , Calidad de Vida
17.
J Craniofac Surg ; 31(1): 303-305, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31634314

RESUMEN

The aim of this study was to investigate whether it is possible to pull the platysma effectively in the medial or lateral direction (medial platysmaplasty and lateral platysmaplasty) and to explore the anatomical basis of those findings.Six hemifaces from 3 fresh cadavers were dissected. After skin removal, the platysma was pulled upward and in the medial or lateral direction with the ulnar side of the palm. Its mobility was checked. In 2 volunteers, using wooden bar, the skin overlying platysma was pulled in superomedial and superolateral direction.The platysma ran diagonally from the acromio-deltoid region to the perioral and submental area. In all hemifaces, the platysma was attached to the mandible along its course. The platysma inserted into the mandibular body. At its medial portion (approximately halfway medially from the mentum to the angle; 4-5 cm), the attachment was so firm that it could not be moved horizontally. The posterolateral portion of the platysma was indirectly attached to the mandible and movable. In cadaver, platysma did not move much when it was pulled in the medial direction. In the lateral direction, however, platysma did move well. In living body, when skin overlying platysma was pulled in superomedial direction and superolateral direction, 3 points marked on mandibular border moved about 1.5-2.0 cm and 2.0-2.5 cm respectively.It is thought that medial platysmaplasty can correct anterior neck deformities and redistribute neck skin mainly in the submental area, while that lateral platysmaplasty can pull the cheek skin in superolateral direction.


Asunto(s)
Ritidoplastia , Adulto , Cadáver , Mentón/cirugía , Femenino , Humanos , Masculino , Mandíbula/cirugía , Persona de Mediana Edad , Cuello/cirugía
18.
J Craniofac Surg ; 31(1): 150-153, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31794444

RESUMEN

BACKGROUND: Mandibular distraction with horizontal osteotomy of the ramus and vertical distraction vector has successfully treated airway obstruction in young Pierre Robin patients. Placing the osteotomy just above the dentoalveolar plane can minimize damage to the inferior alveolar nerve. This study maps the position of the mandibular foramen relative to the height of the dentoalveolar plane to demonstrate the safety of this technique in Pierre Robin neonates. METHODS: Retrospective review of 3D CT scans of Pierre Robin patients was performed with inclusion criteria: ≤1 year of age, bilateral micrognathia requiring surgical intervention for airway (ie, tracheostomy versus mandibular distraction), no prior mandible surgery, and pre-operative 3D CT study. Demographic information collected included: age at CT scan, age at surgery, and genetic diagnosis. Using the 3D study of each patient's right mandible, a line at the level of the mandibular dentoalveolar plane was drawn across the lingual surface of the ramus and the distance to the mandibular foramen at a length perpendicular to the dentoalveolar plane line was then measured. RESULTS: Fifteen patients were included in the study (at least 9 Pierre Robin). Average age at time of CT scan was 71.4 days old. The mandibular foramen was below the level of the dentoalveolar plane in all cases at an average distance of 4.7 mm. Average ramus height 46.2±13.4 CONCLUSIONS:: The dentoalveolar plane was consistently above the mandibular foramen in all patients. Thus, the horizontal corticotomy at a level just above the mandibular dentoalveolar plane spares the inferior alveolar nerve in neonatal Pierre Robin patients undergoing vertical vector mandibular distraction.


Asunto(s)
Mandíbula/cirugía , Osteotomía/métodos , Síndrome de Pierre Robin/cirugía , Obstrucción de las Vías Aéreas , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Micrognatismo/cirugía , Estudios Retrospectivos , Tomografía Computarizada por Rayos X
19.
J Craniofac Surg ; 31(1): 274-277, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31794447

RESUMEN

In 2016, water lines at a children's dental clinic in Orange County, California were contaminated with Mycobacterium abscessus (MA), a non-tuberculosis rapidly-growing mycobacterium, leading to the largest MA outbreak ever reported. Mandatory reporting and active case finding directed by the Public Health Department was conducted in collaboration with community Pediatric Infectious Disease physicians for patients who underwent dental pulpotomies at the contaminated Dental Clinic from January 1 to September 6, 2016. Seventy-one cases (22 confirmed and 49 probable) were identified. One case that required extensive debridement and reconstruction of the mandible is presented in detail. CT maxillofacial demonstrated osteomyelitis extending from the right mandibular angle to the left ramus with multifocal periapical lucencies. CT chest and neck revealed numerous pulmonary nodules and bilateral cervical lymphadenopathy. Extraction of several involved teeth, bilateral selective neck dissection, and extensive mandibular debridement was performed, followed by mandibular stabilization with a custom pre-bent 2.0-mm locking plate. CT images 1-year post-operative showed clearance of infection and sufficient bony stability. Subsequent removal of hardware and bone grafting was performed and the patient is doing well. In the event of a future odontogenic mycobacterium outbreak, the experience at our institution can inform multidisciplinary treatment approaches. Prophylactic extraction of primary teeth that received pulpotomies with contaminated water should be performed. Early and thorough debridement of affected bone, including enucleation of secondary teeth, should be performed if necessary for early source control.


Asunto(s)
Mandíbula/cirugía , Reconstrucción Mandibular , Mycobacterium abscessus , Osteomielitis/cirugía , Trasplante Óseo , Preescolar , Desbridamiento , Humanos , Masculino , Cuello , Osteomielitis/diagnóstico por imagen , Tomografía Computarizada por Rayos X
20.
J Endod ; 46(1): 29-33, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31735361

RESUMEN

INTRODUCTION: Altered sensation is a rare but disturbing adverse event after mandibular premolar and molar periapical surgery procedures, and its incidence is not known. The aim of this study was to determine the incidence of altered sensation after periapical surgery procedures in mandibular premolars and molars. METHODS: This retrospective study includes patients who received periapical surgery in endodontic clinics of a university hospital in the United States. Data were obtained by review of the records for patients who met the inclusion criteria, and statistical analysis of possible predictive factors was performed using the 2-tailed Fisher exact test (α = 0.05). RESULTS: Sixty-two patients (63 teeth, 13 premolars and 50 molars) met the inclusion and exclusion criteria and were analyzed in the study. The first follow-up visit occurred 3 to 37 days after surgery. Altered sensation was observed in 9 patients. Observation of altered sensation was significantly higher (odds ratio = 7.19) after premolar surgeries (5/13) compared with molar surgeries (4/50). CONCLUSIONS: Despite the limited size and retrospective nature of this study, it was concluded that the incidence of altered sensation after periapical surgery appears to be relatively high (14%), with a higher incidence found in premolars compared with molars.


Asunto(s)
Diente Premolar , Mandíbula , Diente Molar , Trastornos de la Sensación , Diente Premolar/cirugía , Humanos , Incidencia , Mandíbula/cirugía , Diente Molar/cirugía , Estudios Retrospectivos , Sensación , Trastornos de la Sensación/etiología
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA