The application of three-dimensional printing in the management of a difficult airway due to Treacher Collins syndrome.

We describe the use of three-dimensional printing to create precise airway models for a patient with Treacher Collins syndrome who presented for bimaxillary temporomandibular joint prostheses, and for whom airway management was predicted to be difficult. The model was based on pre-operative cone beam computed tomography images and printed in the 3D Lab of Hospital Universitario La Paz. Transparent models allowed clear visualisation for simulation and iterative refinement of airway management techniques and aided in risk assessment and instrument sizing. This case report emphasises the utility of this approach in complex airway scenarios.

Navigation in surgical arthroscopy of the temporomandibular joint.

Surgical navigation is a technique that has evolved greatly in recent years. It allows surgeons to navigate through the surgical field in real time, and helps to locate anatomical structures or lesions and to place devices in complex anatomical regions with relatively high accuracy. In this article, we describe the application of surgical navigation in temporomandibular joint (TMJ) arthroscopy using an optical surgical navigator for a more precise diagnosis and to accurately place instruments in the desired position, especially in lateral pterygoid myotomy. We believe this technique will extend our understanding of the TMJ anatomy and will improve functional results in TMJ arthroscopy.

Medication related osteonecrosis of the jaws (MRONJ): Factors related to recurrence after treatment with surgery and platelet rich plasma (PRP) placement.

BACKGROUND: Medication-related osteonecrosis of the jaws (MRONJ) is a well-known complication associated with antiresorptive and antiangiogenic therapies. The purpose of this study was to analyse if there is any predictive factor of recurrence after local debridement plus platelet rich plasma (PRP) placement in MRONJ patients. MATERIAL AND METHODS: Seventy MRONJ patients treated at the department of Oral and Maxillofacial Surgery in La Paz Hospital (Madrid, Spain) were included in this retrospective study. All of them were treated surgically by local debridement and PRP placement. The observation period was between January 2012 and January 2019. Information regarding use, type, administration, and duration of therapy with BP/denosumab was recorded. The follow-up period ranged from 2-52 months. A descriptive analysis, a bivariate and a multivariate study were performed. RESULTS: Most of the patients were women (82.9%) between 50-70 years old (64.3%), with a stage II disease (74.3%). The therapy lasted more than 12 months in 54.8% of them. Zoledronic acid was the main antiresorptive used (44.3%), followed by oral administered BPs (29 patients, 41.4%) and denosumab (10 patients, 14.3%). Osteoporosis (48.6%), breast cancer (30%) and multiple myeloma (11.4%) were the main diseases because the patients were taking antirresorptives. 13 patients (18.6%) experienced recurrence. We found that breast cancer patients (p>0.0001), smokers (p>0.016), and administration of zoledronic acid (p>0.0001) were related to recurrence. After performing the multivariate model, we found that the only factor related to recurrence was smoking habit (Wald 3.837, p=0.05, OR 6.12). CONCLUSIONS: recurrence after local debridement plus PRP placement in our MRONJ series affected to 18.6% of patients. It seems to be more frequent in breast cancer patients, smokers, and after zoledronic acid administration. Smoking habit was the only independent factor related to recurrence in our series.

Preliminary study of the Craniofacial Pain and Disability Inventory-11: validation for patients with head and neck cancer.

BACKGROUND: Cancer involves numerous physical, psychological and emotional changes and has a negative impact on patients. Although there are a wide variety of questionnaires for general use in patients with cancer, very few are available that assess the pain, disability and craniomandibular functionality of patients with head and neck cancer (HNC) in a more specific manner. The purpose of this study is to present the preliminary behavior of the CF-PDI in its reduced version adapted for patients with HNC. MATERIAL AND METHODS: A total of 61 patients with HNC were included in a study to preliminarily analyze the internal consistency of the instrument, the convergent validity and the floor and ceiling effects. All the patients completed the informed consent document and a battery of 5 questionnaires: The Numerical Rating Scale (NRS), the Tampa Scale for Kinesiophobia for Temporomandibular Disorders (TSK-TMD), the Pain Catastrophizing Scale (PCS), the Quality of Life Questionnaire in patients with HNC (QLQ-HN) and the reduced version of the Craniofacial Pain and Disability Inventory (CF-PDI-11). Patients also performed 2 physical tests: measurements of the pain threshold on the masseter muscle and on the distal phalanx of the first finger; and the maximum mouth opening in neutral head position. RESULTS: Cronbach's α coefficient showed a very high internal consistency of 0.92. In terms of convergent validity, a statistically significant correlation was found between the CF-PDI-11 and the following variables: NRS, TSK-TMD, PCS, QLQ-HN, the threshold of pain in the distal phalanx of the first finger and the maximum interincisal opening. However, 21.3% of patients obtained the lowest possible score. The strongest correlation was found between the CF-PDI-11 and the QLQ-HN (r = 0.85, p <0.01). CONCLUSIONS: The preliminary version of the CF-PDI-11 shows that it could be a valid and reliable instrument to measure pain, disability and quality of life in patients with HNC.

A novel mobile application to determine mandibular and tongue laterality discrimination in women with chronic temporomandibular disorder.

BACKGROUND: Chronic pain from temporomandibular disorders (TMDs) is caused by a somatosensory disturbance due to sustained activation of central nervous system nociceptive pathways, which can induce changes in neuroplasticity in the thalamus, basal ganglia and limbic system, as well as disturbances in the somatosensory, prefrontal and orbitofrontal cortex and cognitive impairment. The main objective of this study was to determine the discrimination capacity of mandibular and tongue laterality between women with chronic TMDs and asymptomatic women. MATERIAL AND METHODS: This descriptive-comparative study examined 2 groups with a total of 30 women. All participants were between the ages of 23 and 66 years and were assigned to the chronic TMD group or the asymptomatic group according to the inclusion criteria. We employed a mobile application developed specifically for this study to measure the accuracy and reaction time (RT) of mandibular and tongue laterality discrimination. RESULTS: The chronic TMD group had a lower success rate in laterality discrimination (mean mandibular accuracy of 40% and mean tongue accuracy of 67%) than the asymptomatic group (mean mandibular accuracy of 61% and mean tongue accuracy of 90%). These results showed statistically significant differences between the groups for mandibular laterality discrimination (d, 1.14; p<0.01) and tongue laterality discrimination (d, 0.79; p=0.03). The asymptomatic group had faster RTs than the chronic TMD group. The data revealed statistically significant differences for the right mandibular RT (d, 0.89; p=0.02) and right tongue RT (d, 0.83; p=0.03). However, there were no significant differences for left mandibular and left tongue RT. CONCLUSIONS: We found that the women with chronic TMDs had a lower success rate and slower RTs in the discrimination of mandibular laterality when compared with the asymptomatic women.

Carcinoma ductal sobre adenoma pleomorfo de parótida / Duct carcinoma over the pleomorphic adenoma of the parotid gland

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Hematoma of the floor of the mouth and airway obstruction during mandibular dental implant placement: a case report.

BACKGROUND: Hematoma of the floor of the mouth during mandibular dental implant placement is a rare but potentially life-threatening complication. REPORT: A 53-year-old man developed a hematoma of the floor of the mouth following a dental implant procedure, requiring admission to the hospital. SUMMARY: The floor of the mouth is richly vascularized by a number of branches of the submental and sublingual arteries. During a dental implant procedure in the anterior zone of the mandible, perforation of the lingual cortex may invade the floor of the mouth and therefore damage structures within the sublingual space. The anatomy of the lower portion of the anterior mandibular zone, with the mylohyoid ridge, makes it particularly vulnerable to this kind of injury, particularly in patients with atrophic mandibles. Only a few cases have been reported in the literature to date.

Sarcoma osteogénico naso-maxilo-orbitario. Abordaje transcraneal / Naso-maxillo-orbital osteogenic sarcoma. Transcranial approach

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Queratoquiste odontogénico mandibular. Presentación como trismus de larga evolución / Mandibular odontogenic keratocyst. Presentation as gradually developing trismus

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Tumor fibroso solitario intraoral: análisis clinicopatológico e inmunohistoquímico / Intraoral solitary fibrous tumor: clinical, pathologic, and immunohistochemical analysis

El tumor fibroso solitario (TFS) es una neoplasia de partes blandascompuesta por células fusiformes, que principalmente se origina en lassuperficies mesoteliales. Generalmente tiene una localización intratorácica yla afectación de la cavidad oral es excepcional. Clínicamente el TFS intraoralsuele presentarse como una masa móvil, submucosa, no dolorosa, bien circunscrita,de lento crecimiento. El diagnóstico se obtiene mediante al análisishistopatológico e inmunohistoquímico. Histológicamente se caracterizapor una disposición variable de células fusiformes ovoides, generalmentepositivas para el marcador CD34. El tratamiento de elección es la extirpaciónquirúrgica de la lesión, recomendándose un seguimiento postoperatorio alargo plazo por la posibilidad de aparición de recurrencias y metástasis tardías.Presentamos un caso de TFS intraoral, localizado en el fondo del vestíbulomandibular. Un año después de la resección quirúrgica de la lesión, no haysignos de recidiva local o regional. Asimismo, realizamos una revisión de laliteratura(AU)

Solitary fibrous tumors (SFT) are spindle cell neoplasmsthat most often originate from mesothelial lined surfaces.Intrathoracic tumors are more common and oral mucosalinvolvement is uncommon. Clinically, intraoral SFT is usually apainless, well delimited, slow-growing, mobile submucosal mass.Diagnosis is based on immunohistochemical and histopathologicanalysis. Histologically, SFT is characterized by a variable provisionof spindle cells, which generally are CD34-positive. Resection is thetreatment of choice and long-term follow-up is recommended becauserecurrences and late metastases.We present a case of intraoral SFT of the mandibular vestibularsulcus. One year after surgical resection, there were no signs of localor regional recurrence. The literature was reviewed(AU)

Tratamiento del rinofima con láser de CO2. Presentación de un caso / Treatment of rhinophyma with CO2 laser. A case report

Introducción. El rinofima es una alteración cutánea de la región nasal que produce problemas estéticos importantes. Describimos nuestra experiencia en un caso de rinofima avanzado y su resolución por medio deuna técnica sencilla. Material y métodos. Previa desinfección cutánea se realizó anestesia infiltrativa y bloqueo troncular de nervios infraorbitarios yetmoidales. A continuación se realizó la resección de casi todo el espesor cutáneo con un láser de CO2 Lumenis Sharplan conservando la dermis profunda para permitir la curación por segunda intención. Posteriormente seaplicó vaselina y se realizaron curas y lavados diarios. El paciente fue dado de alta al día siguiente de la intervención. Resultados. Los resultados estéticosfueron muy buenos. El dolor postoperatorio fue controlado con analgesia habitual. En la primera semana se objetivaba un buen grado de cicatrización.A los 2 meses la reepitelización fue completa y ya no se observaban costras ni eritema. Conclusión. La utilización del láser de CO2 en el tratamiento del rinofima avanzado logra unos excelentes resultados estéticos con una morbilidad y riesgo operatorio mínimos

Introduction. Rhinophyma is a skin alteration of the nasal region that causes considerable aesthetic problems. We describe our experience with a case of advanced rhinophyma and its resolution by means of a simple technique. Materials and methods. Theskin area was disinfected beforehand, anaesthesia infiltration and the infraorbital and ethmoidal nerve trunks were blocked. Then, using a Lumenis Sharplan CO2 laser almost the complete skin thickness was resected while preserving the deep dermis layer so as toallow second intention healing. Later, Vaseline was applied and the area was treated daily. The patient was discharged the day after the intervention. Results. The aesthetic results were very good. Postoperativepain was controlled with standard analgesics. Adequatehealing was observed during the first week. Two months later the epithelization was complete and no scabs or erythema remained. Conclusion. The use of the CO2 laser for the treatment of advanced rhinophyma is an adequate therapy that provides excellent aesthetic results, with minimal morbidity and surgical risk

[Double skin paddle fibula free flap in orofacial reconstruction. Case report]. / Colgajo libre de peroné con doble isla cutánea para la reconstrucción orofacial. Presentación de un caso.

Mandibular reconstruction in cases of complex muco-cutaneous defects is a challenge for head and neck surgeons. Here, we report the case of a patient who showed an oro-facial defect including bone, skin and mucosa. We decided to use a double skin paddle fibula osteocutaneous free flap for the reconstruction. Identification and preservation of the septo and musculocutaneous perforators vessels to the skin is the clue step to ensure flap vitality. In this situation mucosal and cutaneous reconstruction is possible using a folded skin paddle. We also discuss the reconstructive options for this kind of defects.

Colgajo libre de peroné con doble isla cutánea para la reconstrucción orofacial / Double skin paddle fibula free flap in orofacial reconstruction. Case report

Mandibular reconstruction in cases of complex muco-cutaneous defects is a challenge for head and neck surgeons. Here, we report the case of a patient who showed an oro-facial defect including bone, skin and mucosa. We decided to use a double skin paddle fibula osteocutaneous free flap for the reconstruction. Identification and preservation of the septo and musculocutaneous perforators vessels to the skin is the clue step to ensure flap vitality. In this situation mucosal and cutaneous reconstruction is possible using a folded skin paddle. We also discuss the reconstructive options for this kind of defects

Las técnicas de transferencia de colgajos microvascularizados han resuelto en gran medida los problemas reconstructivo en el territorio cérvico-facial. Entre estos colgajos destaca el colgajo ósteo-fascio-cutáneo de peroné, que aporta tanto hueso como partes blandas a las áreas receptoras. Presentamos un caso en el que se empleó para reconstruir un defecto de espesor total oromandibular. La correcta identificación de los vasos septocutáneos que vascularizaban la piel aseguró el éxito de la reconstrucción. En este trabajo planteamos las opciones reconstructivas en este tipo de defectos y establecemos las ventajas e inconvenientes del colgajo de peroné con doble isla de piel