RESUMO
The use of osseointegrated dental implants has gained momentum, mainly in the last 20 years. Research and development in the field of implantology are constantly focusing on implant redesign to continue to try and improve implant success. The current aim of implant design is to address situations prone to failure, such as cases of low bone quality or cases of concomitant systemic diseases that compromise healing.
RESUMO
The use of osseointegrated dental implants has gained momentum, mainly in the last 20 years. Research and development in the field of implantology are constantly focusing on implant redesign to continue to try and improve implant success. The current aim of implant design is to address situations prone to failure, such as cases of low bone quality or cases of concomitant systemic diseases that compromise healing.
Assuntos
Implantação Dentária Endóssea/tendências , Implantes Dentários/tendências , Planejamento de Prótese Dentária/tendências , Fosfatos de Cálcio/química , Materiais Revestidos Biocompatíveis , Análise do Estresse Dentário , Humanos , Magnésio/química , Osseointegração , Propriedades de Superfície , Titânio/química , Zircônio/químicaRESUMO
PURPOSE: The goal of this study was to investigate the incidence, location, and height of antral septa and to offer the clinician, through an accurate investigation of the anatomy of the maxillary sinus region, the tools to carry out sinus-lift procedures under safe conditions. MATERIALS AND METHODS: The study consisted of 60 sinuses from 30 human cadavers with an age range of 59 to 90 years. Only septa measuring 3.0 mm or greater in height were considered in our analysis. RESULTS: A total of 20 incomplete septa were found, showing an incidence of 33.3%, and no more than 1 septum per sinus was identified. All septa were located in the anterior-lateral wall and were either sagittal or transversal. Of the septa, 6 (30%) were located in the anterior region of the antral wall (between the second premolar and first molar roots), 8 (40%) were in the middle region (between the first and second molar roots), and 6 (30%) were in the posterior region (distal to the third molar roots). Antral septa height showed great variability, with a mean value of 8.72 mm (SD, 4.26; range, 3.7-18.4 mm). Our study also showed that 40% of our specimens (12 of 30 maxillas) have bony septa that can partially divide the sinus, and they were symmetric in 8 of 12 cases. CONCLUSIONS: A sound knowledge of the maxillary sinus anatomy and of the possible anatomic variations is essential to prevent complications during surgical interventions involving this region.
Assuntos
Seio Maxilar/anatomia & histologia , Idoso , Idoso de 80 Anos ou mais , Cadáver , Feminino , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
We report a case of a 64-year-old patient in whom limitation of mouth opening was the presenting symptom of plasmacytoma. Intra-oral biopsy confirmed a plasma-cell tumour, with no sign of extension on imaging. He was treated with radiotherapy (4000 cGy) and followed up. The diagnosis of solitary plasmacytoma of bone can be confirmed only when the presence of systemic disease has been excluded by clinical, biological, and radiological investigations. We think that the treatment should consist only of radiotherapy. Long-term follow-up is necessary because of the high risk of development of multiple myeloma, which may be delayed.
