Advances in Oral and Maxillofacial Surgery最新文献

Root cysts are inflammatory odontogenic cysts of the dental areas of the jaws. Most of these lesions involve the apex of the offending tooth and present as well-defined radiolucencies. Because of their similar clinical features to other more common lesions of the oral cavity, the differential diagnosis should include dentinal cyst, ameloblastoma, odontogenic keratocyst, periapical cementoma, and Pindborg tumor. The present case report documents a root cyst associated with non-carious tooth originating from an old defective gold thodontic treatment. On the basis of clinical, radiographic, and histopathologic findings, the present case was diagnosed as a root cyst. The clinical characteristics of this cyst can be considered interesting and rare owing to the unusual origin. The tooth was treated with endodontic therapy, then the lesion was enucleated surgically associated with apical resection; all other teeth and vital structures were preserved, without any postoperative complications and with satisfactory healing with total disappearance of the lesion after one year.

The aim of this scoping review was to provide a clear and comprehensive overview of the available literature on forces and movements during tooth extraction. A systematic search strategy was conducted in PubMed, Embase, Web of Science (Core Collection) and Scopus from inception up to February 11th, 2022. All literature in which tooth extractions were performed and forces and/or movements were measured quantitatively were included. A total of 1975 articles were screened and after selection 17 articles were included for qualitative synthesis. Among others, the following data was collected: characteristics of measurements, type of study, material, types of teeth extracted, method of extraction, clinical metadata, and outcome measure. For most included papers the translation of the reported data to clinically relevant results was difficult. Most included articles only measured forces and torques (n = 16) and no movements. Furthermore, measurements were performed in only one or two of the six axes of movement (three translational axes and three rotational axes) (n = 15). In addition, a large heterogeneity in outcome measures was reported and the reported metadata in the papers is scarce, especially in the in vitro and ex vivo studies. In conclusion, this scoping review showed a strong limitation of our fundamental knowledge of these frequently performed procedures. More quantitative research is necessary to improve our understanding of the tooth extraction procedure.

Background

Malignant peripheral nerve sheath tumor (MPNST) is an uncommon tumor in the head and neck region that develops either from a preexisting neurofibroma or de novo.

Observation

We report here a case of MPNST of the buccal mucosa in a 40 years old female whose chief complaint was a recurrent painful nodule. The diagnosis is considered as the most elusive and difficult among soft tissue sarcomas because of its non specific presentation, both clinically and pathologically.

Conclusion

This clinical case illustrates the challenge of delivering a pertinent diagnosis of MPNST due to its non-specific presentation both clinically and histopathologically. It also emphasizes the importance of a high level of vigilance when assessing painful mucosal lesions of normal aspect.

Mandibular bone loss represents an acquired bone destruction leading to a permanent continuity solution of the mandible. Mandibular reconstruction with fibular grafting is an effective alternative to restore bone continuity and ensure the aesthetic and functional functions of the patient. Two cases of successful mandibular reconstruction with the fibular graft were presented at the Department of Stomatology and Maxillofacial Surgery of the Yalgado Ouédraogo University Hospital (CHUYO). The first case concerns a 34-year-old female patient who underwent an interrupted mandibular resection for an ossifying fibroma. The second patient was a 38-year-old man with an ameloblastoma of the horizontal branch of the mandible who underwent hemi-mandibulectomy. A splint was placed for both patients. Mandibular reconstruction with a fibular bone graft taken from the left leg was performed in a second stage. The postoperative course was simple. Surgical follow-up noted good integration of the graft into the recipient site. The results obtained were satisfactory for each patient in terms of function (mastication, swallowing, phonation) and aesthetics. A study of the morphological data of the mandible would be of great help in producing a cutting guide that takes into account the realities of our populations.

Gorlin-Goltz syndrome encompasses a variety of clinical signs and symptoms, including significant oral manifestations of which dentists should be aware. Given the risk of malignancy, it is important to be aware of this syndrome and recognize the need for early referral to multidisciplinary management. This article aims to discuss the wide range of clinical manifestations, diagnosis and management of Gorlin-Goltz syndrome through a clinical case.

Introduction

The columella is the subunit between the two nostrils that provides support and projection to the nasal tip and has a functional role as well as an aesthetic one. The etiology for the absence of columellar is diverse, and it is one of the most complex nasal subunits to reconstruct due to its narrow horizontal dimension, its tenuous vascularity, and the limited availability of adjacent tissue.

Aim

to present the one-step procedure for the reconstruction of the columella with a chondromyocutaneous graft from the retroauricular region.

Case report

A 38-year-old female patient presented with a surgical complication referred by another specialist who, after performing primary rhinoplasty, presented an isolated columella defect. The defect was reconstructed in one phase using a chondro-myocutaneous graft from the retroauricular region, where no complications were observed.

Conclusion

This is a method that provides a very satisfactory aesthetic result with minimal patient morbidity and discomfort.

This study aimed to capture both forces and torques exerted during tooth removal in clinically relevant dimensions and high detail. An ex vivo measuring setup was designed consisting of, amongst others, a compliant robot arm and a six-axis force/torque sensor. Fresh-frozen cadavers were used to match the clinical situation as closely as possible. Complete data was successfully recorded in 110 tooth removal experiments. The highest peak force was 99 N. An increase in forces in the dorsal region was objectified in both average and total forces exerted. Extrusion and buccal forces were found to be most dominant in both upper and lower jaw. A strong limitation exists in our scientific understanding of tooth removal procedures. In this study, for the first time, forces and torques are presented in high detail and in all (clinically relevant) dimensions. Despite the limited data size and ex vivo circumstances, the hereby-presented data show a reliable order of magnitude when considering forces in tooth removal and could serve as a benchmark for future research in this field. A better understanding of these procedures could aid in the development of evidence-based and improved educational material.