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1.
Int J Oral Maxillofac Implants ; 36(1): 21-29, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33600519

RESUMEN

PURPOSE: To assess the postoperative complications and outcome (implant survival) of quad zygomatic implants inserted in patients with edentulism and severely atrophic maxillae. MATERIALS AND METHODS: Two independent reviewers conducted an electronic search of the literature (PubMed, Scopus, EBSCO, Web of Science) from January 2000 to February 2019. The inclusion criteria were articles published in English reporting data of at least five patients with severely atrophic edentulous maxillae undergoing placement of four zygomatic implants without additional insertion of standard implants, with a minimum of 6 months of follow-up. Data extracted included number of patients, characteristics of the maxillary defect, number of zygomatic implants, implant details, surgical procedure, prosthetic rehabilitation, postoperative complications, survival rate, and length of follow-up after definitive prosthesis delivery. RESULTS: Eleven studies with 166 patients were included. The heterogeneity among studies was not significant. The pooled incidence rates of complications were as follows: sinusitis 12% (95% confidence interval [CI]: 4% to 23%), malposition and surgical guiding failure 11% (95% CI: 3% to 21%), local infection/injury 10% (95% CI: 3% to 18%), and prosthetic complications 5% (95% CI: 0% to 13%). The implant survival rate ranged between 95.8% and 100%, and the pooled implant survival rate in the meta-analysis was 98% (95% CI: 97% to 99%). CONCLUSION: Quad zygomatic implants inserted in patients with severely atrophic edentulous maxillae have a high implant survival rate, but the incidence of complications should not be underestimated.


Asunto(s)
Implantes Dentales , Arcada Edéntula , Implantación Dental Endoósea/efectos adversos , Implantes Dentales/efectos adversos , Prótesis Dental de Soporte Implantado , Estudios de Seguimiento , Humanos , Arcada Edéntula/cirugía , Maxilar/cirugía , Resultado del Tratamiento , Cigoma/cirugía
2.
Int J Oral Maxillofac Implants ; 36(1): 126-130, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33600533

RESUMEN

PURPOSE: To present a case series treated by inferior meatal antrostomy as a prophylactic maneuver after the placement of zygomatic implants to decrease the risk of sinusitis. MATERIALS AND METHODS: All patients undergoing zygomatic implant placement using the lower meatal antrostomy protocol between June 2011 and March 2019 at the Department of Oral and Maxillofacial Surgery, Universidad El Bosque, were included. Patients were evaluated after 12 months of the procedure using clinical and radiologic criteria described by Kuriyama and Reiskin. RESULTS: Forty-eight patients were included, in whom 184 implants were placed. Complications were as follows: paresthesia (6.2%), orosinusal fistula (4.1%), skin infection (2.1%), and loss of the implant (1.6%). There were no cases of sinusitis. CONCLUSION: This study provides evidence that the technique is effective and should be considered because of its simplicity. The inferior meatal antrostomy has been proven to be a simple, effective, and reliable technique to decrease the risk of sinusitis associated with the placement of zygomatic implants.


Asunto(s)
Implantes Dentales , Sinusitis Maxilar , Sinusitis , Implantación Dental Endoósea/efectos adversos , Humanos , Seno Maxilar/cirugía , Sinusitis Maxilar/etiología , Sinusitis Maxilar/prevención & control , Sinusitis Maxilar/cirugía , Cigoma/diagnóstico por imagen , Cigoma/cirugía
3.
BMJ Case Rep ; 14(1)2021 Jan 25.
Artículo en Inglés | MEDLINE | ID: mdl-33495186

RESUMEN

Comminuted zygomatic arch fractures are a challenge to manage without complete exposure owing to their instability. The presence of facial nerve branches near the bone often means that these fractures are often treated by closed methods or left untreated. The disadvantages of such comminuted fracture left untreated cannot be overemphasised. Hence, there is a need of a surgical approach for exposure and fixation of such fractures without limitation of facial nerve injury. We propose and report a case of malunited comminuted fracture of zygomatic arch using facelift approach.


Asunto(s)
Fijación Interna de Fracturas/métodos , Fracturas Mal Unidas/cirugía , Fracturas Mandibulares/cirugía , Osteotomía/métodos , Ritidoplastia/métodos , Fracturas Cigomáticas/cirugía , Humanos , Masculino , Fracturas Mandibulares/complicaciones , Persona de Mediana Edad , Cigoma , Fracturas Cigomáticas/complicaciones
4.
J Craniomaxillofac Surg ; 49(3): 223-230, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33509673

RESUMEN

BACKGROUND: The aim of this prospective study is to objectively assess 3D soft tissue and bone changes of the malar region by using the malar valgization osteotomy in concomitant association with orthognatic surgery. MATERIALS AND METHODS: From January 2015 to January 2018, 10 patients who underwent single stage bilateral malar valgization osteotomy in conjunction with maxillo-mandibular orthognatic procedures for aesthetic and functional correction were evaluated. Clinical and surgical reports were collected and patient satisfaction was evaluated with a VAS score. For each patient, maxillofacial CT-scans were collected 1 month preoperatively (T0) and 6 months after the operation (T1). DICOM data were imported and elaborated in the software MatLab, which creates a 3D soft tissue model of the face. 3D Bone changes were assessed importing DICOM data into iPlan (BrainLAB 3.0) software and the superimposition process was achieved using autofusion. Descriptive statistical analyses were obtained for soft tissue and bone changes. RESULTS: Considering bone assessment the comparison by superimposition between T0 and T1 showed an increase of the distance between bilateral malar prominence (Pr - Pl) and a slight forward movement (87,65 ± 1,55 to 97,60 ± 5,91); p-value 0.007. All of the patients had improvement of α angle, ranging from 36,30 ± 1,70 to 38,45 ± 0,55, p-value 0,04 (αr) and 36,75 ± 1,58 to 38,45 ± 0,35; p-value 0,04 (αl). The distance S increased from 78,05 ± 2,48 to 84,2 ± 1,20; p-value 0,04 (Sr) and 78,65 ± 2,16 to 82,60 ± 0,90 (Sl); p-value 0,03. Considering the soft tissue, the comparison by superimposition between T0 and T1 showed an antero-lateral movement (p-value 0.008 NVL; p-value 0.001 NVR) of the malar bone projection together with an increase in width measurements (p-value 0,05 VL; p-value 0,01 VR). Angular measurement confirmed the pattern of the bony changes (p-value 0.034 αL; p-value 0,05 αR). CONCLUSION: The malar valgization osteotomy in conjunction with orthognatic surgery is effective in improving zygomatic projection contributing to a balanced facial correction in midface hypoplasia.3D geometrical based volume and surface analysis demonstrate an increase in transversal and forward direction. The osteotomy can be safely performed in conjunction with orthognatic procedures.


Asunto(s)
Estética Dental , Huesos Faciales , Humanos , Osteotomía , Estudios Prospectivos , Cigoma/diagnóstico por imagen , Cigoma/cirugía
5.
Facial Plast Surg ; 36(5): 613-622, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33368084

RESUMEN

Zygoma reduction is indicated in patients where the primary aim of surgery is reduction in the width of cheekbones to achieve smoother and more feminine facial aesthetic lines. Surgeons should evaluate the width of midface (bizygomatic width) and the protrusion of zygoma (volume and position of the zygomatic body) when evaluating patients where such a procedure is indicated. Intraoral high-L osteotomy is the most useful method to successfully treat a wide spectrum of zygomatic protrusions and is widely accepted as the treatment of choice for aesthetic purposes. The amount of ostectomy is determined by evaluating the volume of zygomatic body. The zygomatic body and arch are usually moved posteromedially during surgery; the point of maximal malar projection is evaluated and transposed to a new ideal position. Zygoma reduction can be performed solely or in combination with other facial bone contouring procedures such as mandible reduction, genioplasty, or forehead augmentation. Soft tissue sagging, nonunion, malunion, and paresthesia are the most common complications of this procedure. Undercorrection and asymmetry are the most common aesthetically unfavorable sequelae and should be carefully prevented by proper preoperative planning and meticulous execution of surgical technique.


Asunto(s)
Procedimientos Quirúrgicos Reconstructivos , Cigoma , Estética Dental , Humanos , Mandíbula/cirugía , Osteotomía , Cigoma/diagnóstico por imagen , Cigoma/cirugía
6.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 55(11): 845-850, 2020 Nov 09.
Artículo en Chino | MEDLINE | ID: mdl-33171557

RESUMEN

Objective: To evalute the accuracy and clinical outcome of a real-time navigation system for the placement of quad zygomatic implants. Methods: Twenty-four patients [9 males and 15 females, mean age was (50.8±14.7) years old], from January 2015 to December 2019, with 96 zygomatic implants placed under a real-time navigation system in Department of Second Dental Center and Department of Oral Implantology of Ninth People's Hospital, Shanghai Jiaotong University School of Medicine were included in the study. The preoperative and the postoperative multislice CT or cone-beam CT were fused to measure and record the entry, exit and angle deviation between the planned and placed implants. The implants were divided into groups according to implant insertion approach (real-time navigation and free-hand), implant length (<47.5 mm and ≥47.5 mm) and implant position (proximal and distal implant). And the differences of implant accuracy were analyzed. The intraoperative and postoperative complications were also recorded. The implant survival rate was evaluated after 6 months follow-up. A P value<0.05 indicates statistical significance. Results: The mean entry, exit and angle deviation of zygomatic implants were (1.49±0.64) mm, [2.03(1.58, 2.40)] mm and (2.49°±1.12°), respectively. The average entry, exit and angle deviation of the navigation guided implant insertion group were (1.45±0.60) mm, (1.96±0.44) mm and (2.66±1.13°) respectively, while those of the free-hand group were (1.50±0.64) mm, (2.04±0.79) mm and (2.50°±1.13°) respectively. There was no significant difference between the two groups (P>0.05). The average entry, exit and angle deviation of the group with length<47.5 mm were (1.42±0.60) mm, (2.13±0.60) mm and (2.61°±1.08°) respectively and those of the group with length ≥ 47.5 mm were (1.52±0.65) mm, (1.98±0.82) mm and (2.43°±1.14°) respectively. No significant difference was found between the two groups (P>0.05). In proximal implant group, the average entry, exit and angle deviation were (1.55±0.69) mm, (2.05±0.92) mm and (2.48°±1.16 °) respectively while those of distal implant group were (1.43±0.57) mm, (2.01±0.57) mm and (2.49°±1.10°), respectively. No significant difference was detected between the two groups (P>0.05). All zygomatic implants were placed uneventfully. There were no intra-operative complications, and post-operative reversible complications developed in 3 patients. Two zygomatic implants were lost and the overall zygomatic implant survival rate was 97.9% (94/96) within a follow-up of 6 months. Conclusions: Quad zygomatic implant placement can be achieved with high accuracy and predictable clinical outcome under guidance of a real-time navigation system.


Asunto(s)
Implantes Dentales , Arcada Edéntula , Cirugía Asistida por Computador , Adulto , Anciano , China , Implantación Dental Endoósea , Femenino , Humanos , Arcada Edéntula/cirugía , Masculino , Maxilar/cirugía , Persona de Mediana Edad , Cigoma/cirugía
7.
Medicine (Baltimore) ; 99(41): e22529, 2020 Oct 09.
Artículo en Inglés | MEDLINE | ID: mdl-33031295

RESUMEN

BACKGROUND: Reduction malarplasty is a routine clinical procedure among Asian women, but the traditional surgical methods are still associated with serious complications, such as nonunion of the osteotomy sites. Revisional surgery to correct such complications is common, but poor bone healing in the osteotomy area presents a challenge to plastic surgeons. In this report, the authors present a new technique for revision malarplasty that uses the piezosurgery (piezoelectric bone surgery) approach. PATIENT AND DIAGNOSIS: A 30-year-old female patient underwent reduction malarplasty with titanium plate fixation in the zygomatic region at another hospital 4 years ago, but the root of the zygomatic arch was not fixed. The patient was diagnosed with bone nonunion, facial asymmetry, and soft tissue sagging on the right side of the face after malarplasty. INTERVENTION: We used piezosurgery to truncate the displaced healed broken end of the zygomatic bone according to the original osteotomy line. Following this, the malar was re-fixed with micro-titanium mesh, and the zygomatic arch was fixed with a titanium plate. OUTCOME: The patient was followed up for 11 months after the revision procedure. Her facial appearance was satisfactory, and no complications were observed on computed tomography images. LESSONS: This report presents a novel therapeutic option for surgical revision of failed malarplasty. Piezosurgery can help overcome the limitations of traditional surgical methods by reducing bone resorption, preventing resorption of the bone in revision malarplasty, modifying the degree of inward and upward movement of the zygomatic bone by facilitating adjustment of the position of the drill hole in the cortex of the bone stump for stable fixation. Hence piezosurgery can be a simple, accurate, and non-invasive osteotomy method for revision malarplasty.


Asunto(s)
Asimetría Facial/cirugía , Piezocirugía , Complicaciones Posoperatorias/cirugía , Cigoma/cirugía , Adulto , Grupo de Ascendencia Continental Asiática , Placas Óseas , Femenino , Humanos , Osteotomía , Procedimientos Quirúrgicos Reconstructivos , Reoperación
8.
Indian J Dent Res ; 31(4): 640-643, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33107470

RESUMEN

Fibrous dysplasia (FD) is a fibro-osseous lesion where normal bone and marrow is replaced with fibrous tissue, resulting in formation of bone that is weak and prone to expansion. It is classified according to the number of affected bones, and its association to endocrine alterations, that is, monostotic (80-85%), polyostotic forms (20-30%), and Albright's disease. Involvement of two or more bones is termed as polyostotic FD, a relatively uncommon condition. Here we report a rare case of polyostotic FD involving facial bones, orbital bones, sphenoid bone, and spine in a 21-year-old male patient.


Asunto(s)
Displasia Fibrosa Poliostótica , Adulto , Displasia Fibrosa Poliostótica/diagnóstico por imagen , Humanos , Hiperplasia , Masculino , Rotación , Verduras , Adulto Joven , Cigoma
9.
Facial Plast Surg ; 36(4): 416-429, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32866979

RESUMEN

South America is a vast territory; its people were made from all parts of the world. The miscegenation made a unique population comprised of Indian, Asian, Caucasian, African, Mestizo, Mulatto, and Zambo. The South American patients tend to have a wider face with a skin-soft tissue envelope (S-STE) that is thicker, heavier, and has less elasticity than the Caucasian patient. Upper eyelids may hood easily. In the same way, malar eminences and round face look are more prominent. The chin can be a little retracted. With aging, the S-STE tends to sag more, making nasolabial folds and jowl area more prominent, and redundant neck skin will appear loose and heavy. Facelift is popular in South American patients. They have peculiar characteristics like heavy dark sebaceous skin which lead to peculiarities in face lifting. It is usually a procedure designed to rejuvenate all thirds of the face. In the forehead, skin excision in temporal incisions is usually necessary. Midface subperiosteal lift is a possibility for heavy skin patients who need great improvement in the center of the face. The neck lift is almost indispensable to the rejuvenation of the lower third. Extended superficial muscular aponeurotic system or deep plane dissection is commonly performed so the soft tissues of the midface, the jowls, and the neck can be lifted to reestablish their youthful relationship with the underlying skeleton.


Asunto(s)
Ritidoplastia , Frente/cirugía , Humanos , Cuello , Rejuvenecimiento , Cigoma
10.
Indian J Dent Res ; 31(3): 382-388, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32769271

RESUMEN

Context: Anterior open bite is a complex condition involving a combination of various dental and skeletal components in three dimensions. The data on the differences and changes in the transverse relation in individuals with anterior open bite are limited. Aims: To assess the dental arch widths in individuals with anterior open bite using study casts and facial widths using frontal cephalogram and to compare these widths with that of individuals without anterior open bite. Materials and Methods: Eighty adults [40 with and 40 without anterior open bite, mean (standard deviation) age = 20.68 years] were selected. The study group was divided into skeletal (n = 19) and dental (n = 21) open bite groups according to Jarabak's ratio. Posteroanterior cephalograms and study casts were analyzed. Results: The mean width of zygomatic arch (112.18 mm) and condylar region (100.55 mm) in the control group was significantly higher (P < 0.05). The mean gonial width in the skeletal open bite group (81.143 mm) was significantly (P < 0.05) lesser than the dental open bite group (84.842). The maxillary intercanine width for the skeletal open bite group (36.48 mm) was significantly (P < 0.01) higher than that of the dental open bite group (34.26 mm). Conclusion: A transverse deficiency was seen in in the zygomatic and condylar regions in adults with anterior open bite. Individuals with a skeletal open bite showed a narrow gonial and wider maxillary intercanine width compared with individuals with dental open bite.


Asunto(s)
Mordida Abierta , Adulto , Cefalometría , Arco Dental , Humanos , Maxilar , Radiografía , Cigoma
11.
Indian J Dent Res ; 31(3): 389-395, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32769272

RESUMEN

Introduction: Implant rehabilitation of atrophic maxilla is challenging. The aim of this manuscript is to compare the clinical outcome of rehabilitation of atrophic maxilla (long span) by zygomatic implants (ZI) versus conventional sinus lift with augmentation procedures dental implants (SLAP-DI). Materials and Methods: A retrospective record analysis of a cohort of 25 patients fulfilling the inclusion and exclusion criteria, over a period of 6 years were performed. The patients had been either treated with ZI or SLAP-DI. The outcome measures were: prosthesis, implant and augmentation failures, any complications, patients' number of days with total or partial impaired activity, time to function and number of dental visits, assessed by independent assessors from records. The data was analyzed using SPSS with P ≤ 0.05. Results: There were 16 (64%) men and 11 (44%) had ZI while 14 (56%) underwent SLAP-DI. There were no prosthesis or implant failures in this cohort. Between ZI and SLAP-DI, there was no gender difference (P = 0.648), border line significance in minor complication (P = 0.075), with less complication encountered in SLAP-DI than the ZI. None of the cases had major complications that required hospitalization or severe medical therapy. Of the 14 cases that underwent SLAP, 11 (78.6%) had no augmentation failure (resorption <10%). ZI had older age (P = 0.000), with greater number of teeth missing (P = 0.002), with lesser time for functional loading (P = 0.000), required less number of visit to dentist (P = 0.000), and lesser bone loss at insertion site (P = 0.005). Discussion & Conclusion: The results are discussed in light of previous pertinent literature. This short term (~ 1 year follow-up) suggest that SLAP-DI and ZI have certain similar features. There is no statistical difference in outcome barring the time needed to functional loading (1.3 days vs. 444.3 days). Relatively more complications were reported for ZI, but had no statistical significance. Long-term and multi-center data are needed to confirm the results.


Asunto(s)
Aumento de la Cresta Alveolar , Implantes Dentales , Anciano , Implantación Dental Endoósea , Prótesis Dental de Soporte Implantado , Fracaso de la Restauración Dental , Estudios de Seguimiento , Humanos , Masculino , Maxilar/cirugía , Estudios Retrospectivos , Resultado del Tratamiento , Cigoma
12.
Av. odontoestomatol ; 36(2): 63-70, mayo-ago. 2020. ilus
Artículo en Español | IBECS | ID: ibc-194687

RESUMEN

Se presenta un caso clínico en el que se rehabilita a una paciente con maxilar superior atrófico mediante una combinación de implantes cigomáticos, colocados mediante una aproximación exteriorizada, e implantes anteriores convencionales palatinizados. Se realizó un procedimiento de regeneración ósea guiada alrededor de los implantes cigomáticos para obtener un mayor grosor de la cortical vestibular y palatina alrededor de los implantes del maxilar superior y mejorar el pronóstico. A un año de la carga protésica, el hueso periimplantario se mantiene estable


A clinical case is presented in which a patient with atrophic upper jaw is rehabilitated by a combination of zygomatic implants, placed using an exteriorized approach, and conventional palatalized anterior implants. A guided bone regeneration procedure is performed around the zygomatic implants to obtain a greater thickness of the facial bone and improve the prognosis. One year after loading, the peri-implant bone remains stable


Asunto(s)
Humanos , Femenino , Anciano , Regeneración Ósea , Atrofia/diagnóstico por imagen , Implantes Dentales , Implantación Dental Endoósea/métodos , Arcada Edéntula/cirugía , Cigoma/cirugía , Atrofia/cirugía , Maxilar/anomalías , Maxilar/cirugía , Cigoma/diagnóstico por imagen
14.
Int. j. morphol ; 38(4): 914-918, Aug. 2020. tab, graf
Artículo en Inglés | LILACS | ID: biblio-1124876

RESUMEN

The anatomical localization of foramen infraorbitale (FOI) and its relationship with ambient structures are of great importance for clinicians and surgeons. This study was performed on seventy five skulls, and the distance between FOI to important anatomical formations, angular position of the zygomatic bone and the relationship between these parameters were investigated on both sides. The distance of FOI to margo infraorbitalis (MI), apertura piriformis (AP) and spina nasalis anterior (SNA), upper face height (UH) and upper face width (UW) were measured. Zygomatic bone triangle angles (SA, PA, IA) and porion-nasion-spina nasalis anterior angle (PNS) were measured from lateral view of the skull. While there was no significant difference between right and left measurement except for PA (p=0.03), the distance from FOI to MI is showed a very high degree positive correlation between the right and left sides, the distance from the FOI to AP was weak correlated only right side.


La localización anatómica del foramen infraorbitario (FIO) y su relación con las estructuras adyacentes son de gran importancia para los médicos y cirujanos. Este estudio se realizó en setenta y cinco cráneos, y se investigó la distancia entre FIO a formaciones anatómicas importantes, la posición angular del hueso cigomático y la relación entre estos parámetros en ambos lados. Se midió la distancia de FIO al margen infraorbitario (MI), apertura piriforme (AP) y espina nasal anterior (ENA), altura superior de la cara (AC) y ancho superior de la cara (AC). Los ángulos del triángulo óseo cigomático y el ángulo anterior porion-nasion-epina nasal se midieron desde la vista lateral del cráneo. Si bien no hubo una diferencia significativa entre la medición derecha e izquierda, a excepción AP (p = 0,03), la distancia de FIP a MI mostró una correlación positiva de alto grado entre los lados derecho e izquierdo, la distancia de FIO a AP fue débil correlacionado solo en el lado derecho.


Asunto(s)
Humanos , Adulto , Órbita/anatomía & histología , Cefalometría , Cráneo/anatomía & histología , Cigoma/anatomía & histología
15.
Int. j. morphol ; 38(4): 820-824, Aug. 2020. tab, graf
Artículo en Inglés | LILACS | ID: biblio-1124860

RESUMEN

The pterion is a topographic point on the lateral aspect of the skull where frontal, sphenoid, parietal and temporal bones form the H or K shaped suture. This is an important surgical point for the lesions in anterior and middle cranial fossa. This study was performed on 50 dry skulls from Serbian adult individuals from Department of Anatomy, Faculty of Medicine in Novi Sad. The type of the pterion on both sides of each skull was determined and they are calcified in four types (sphenoparietal, frontotemporal, stellate and epipteric). The distance between the center of the pterion and defined anthropological landmarks were measured using the ImageJ software. Sphenoparietal type is predominant with 86 % in right side and 88 % in left side. In male skulls, the distance from the right pterion to the frontozygomatic suture is 39.89±3.85 mm and 39.67±4.61 mm from the left pterion to the frontozygomatic suture. In female skulls the distance is 37.38±6.38 mm on the right and 35.94±6.46 mm on the left. The shape and the localization of the pterion are important because it is an anatomical landmark and should be used in neurosurgery, traumatology and ophthalmology.


El pterion es un punto topográfico en la cara lateral del cráneo donde los huesos frontales, esfenoides, parietales y temporales forman la sutura en forma de H o K. Este es un punto quirúrgico importante para las lesiones en la fosa craneal anterior y media. Este estudio se realizó en 50 cráneos secos de adultos serbios del Departamento de Anatomía de la Facultad de Medicina de Novi Sad. Se determinó el tipo de pterión en ambos lados de cada cráneo y se calcifican en cuatro tipos (esfenoparietal, frontotemporal, estrellado y epipterico). La distancia entre el centro del pterion y los puntos de referencia antropológicos definidos se midió utilizando el software ImageJ. El tipo esfenoparietal es predominante con 86 % en el lado derecho y 88 % en el lado izquierdo. En los cráneos masculinos, la distancia desde el pterion derecho hasta la sutura frontocigomática es 39,89 ± 3,85 mm y 39,67 ± 4,61 mm desde el pterion izquierdo hasta la sutura frontocigomática. En los cráneos femeninos, la distancia es 37,38 ± 6,38 mm a la derecha y 35,94 ± 6,46 mm a la izquierda. La forma y la localización del pterion son importantes debido a que es un indicador anatómico y debe usarse en neurocirugía, traumatología y oftalmología.


Asunto(s)
Humanos , Masculino , Femenino , Cráneo/anatomía & histología , Hueso Esfenoides/anatomía & histología , Hueso Temporal/anatomía & histología , Cigoma/anatomía & histología , Serbia
16.
Int J Oral Maxillofac Implants ; 35(4): 750-756, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32724927

RESUMEN

PURPOSE: The aim of this study was to evaluate 141 zygomatic implants for the reconstruction of severely atrophic maxillae. MATERIALS AND METHODS: In this retrospective case series study, zygomatic implants were placed under general anesthesia. Inclusion criteria were as follows: ASA I or ASA II, age older than 18 years, inadequate bone for restoration with conventional implants, alternative augmentation procedures considered either inappropriate or contraindicated, absence of a medical condition related to implant failure, and providing written consent. Zygomatic implants used in the study consisted of three different brands: NobelZygoma, Southern Implants System, and Implantswiss. RESULTS: The study included 45 patients, in whom 141 zygomatic implants were placed. The mean age of the patients was 51.76 (range: 23 to 72) years. Three patients were rehabilitated with removable prostheses, 19 patients with fixed prostheses, and 23 patients with hybrid prostheses. The overall complication rate was 5.67% (two zygomatic implants developed infection [1.4%], one zygomatic implant developed peri-implantitis [0.7%], three zygomatic implants developed sinusitis [2.1%], and two zygomatic implants showed unsuccessful prosthetic rehabilitation [1.4%]). The follow-up period ranged from 6 to 36 months. CONCLUSION: Clinical complications of zygomatic implants are acceptable, and their survival rates are similar to those of endosteal implants. Zygomatic implants can contribute to prosthetic rehabilitation.


Asunto(s)
Implantes Dentales , Arcada Edéntula/cirugía , Adulto , Anciano , Implantación Dental Endoósea , Prótesis Dental de Soporte Implantado , Estudios de Seguimiento , Humanos , Maxilar/cirugía , Persona de Mediana Edad , Estudios Retrospectivos , Adulto Joven , Cigoma/cirugía
18.
19.
Med. oral patol. oral cir. bucal (Internet) ; 25(4): e541-e548, jul. 2020. tab, graf
Artículo en Inglés | IBECS | ID: ibc-196508

RESUMEN

BACKGROUND: Oral rehabilitation of atrophic maxillae features high complexity, for which there are several therapeutic modalities reported on scientific literature. Zygomatic implant placement is a viable option that features low morbidity and allows immediate prosthetic loading. The purpose of the present study was to determine the methodological quality of systematic reviews that assessed the effectiveness of zygomatic implants placed in atrophic maxillae. MATERIAL AND METHODS: Searches were conducted on Medline via Pubmed, LILACS, Dare Cochrane, Scopus, and Sigle via Open Grey up to June 2019. RESULTS: Seven systematic reviews were eligible for Overview and comprised a total of 2313 patients, 4812 zygomatic implants, and a 96,72% success rate. Common surgical complications, in decreasing order, were: maxillary sinusitis, peri-implant mucositis, prosthetic fracture, and infections. Methodological quality was assessed using the AMSTAR 2 tool, which revealed that six systematic reviews showed critically low methodological quality and one review was assessed as of low methodological quality. CONCLUSIONS: Zygomatic implants seem to be an adequate option for atrophic maxilla rehabilitation, however, new studies with a higher methodological rigor are needed to provide more reliable results to professionals and patients undergoing this modality of oral rehabilitation


No disponible


Asunto(s)
Humanos , Revisiones Sistemáticas como Asunto , Implantación Dental Endoósea/métodos , Cigoma/cirugía , Enfermedades Maxilares/cirugía , Resultado del Tratamiento
20.
Facial Plast Surg ; 36(3): 281-289, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32492736

RESUMEN

The complex curved contours of the zygomatic regions are difficult to analyze. Therefore, a better evaluation medium must be developed. We aimed to examine and summarize the morphological characteristics of the zygomatic region by using a moiré pattern map and computer algorithm. In this cross-sectional study, we collected three-dimensional images of the facial contours of 251 Han Chinese youth and established a morphological moiré map database. Clustering analysis using a computer algorithm was applied to obtain the zygomatic morphologies for classification. Aesthetic evaluation was performed to summarize the characteristics of the zygomatic types and provide reference for the preoperative morphological design of the midface. Zygomatic regions were morphologically classified into five types. Each type had its typical feature in the moiré pattern map. The moiré stripes in the left zygomatic region formed an "Ω" shape outward and downward in type 1, and they tended to be diagonal like "\\\" in type 2, smoothly curved like ")))" in type 3, vertical like "|||" in type 4, and diagonal like "///" in type 5. The aesthetic evaluation outcome indicated that the integrally flat zygoma (type 4) was more aesthetically pleasing among males, and the integrally prominent zygoma (type 3) was more aesthetically pleasing among females. Five morphological contour types of the zygoma were classified among the Chinese Han males and females based on the simulated moiré pattern. This morphological classification would aid in preparing a guide for clinical diagnosis and surgical planning.


Asunto(s)
Estética Dental , Topografía de Moiré , Adolescente , Mejilla , Estudios Transversales , Femenino , Humanos , Masculino , Cigoma
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