BackgroundThe aim of our study was to investigate, in 3 dimensions, the maxillary sinus septa as an alternative site for dental implant placement to avoid sinus lift procedures.Material/MethodsWe selected 100 dentate and 100 edentate patients with the presence of a maxillary sinus septum by reviewing a larger cone beam computer tomography (CBCT) database from the Department of Oral and Maxillofacial Surgery at Cliniques Universitaires Saint Luc in Bruxelles, Belgium.Three-dimensional reconstructions of 200 maxillary sinus septa were performed using Maxilim software. Ten measurements (length, lateral height, and thickness of the middle and medial region of the septum) were performed by 1 observer, 2 times, with an interval of 1 week between measurements. The angle between the septum and the maxillary plane was also measured. Finally, localization and orientation were assessed for each septum.ResultsThere was no statistically significant difference between the 2 intraobserver measurements (p>0.05).Student’s t-test was used to compare means. Middle height was the only measurement for which there was a difference between edentate and dentate patients (p=0.0095, edentate mean < dentate mean).The location of the septa observed in our study groups demonstrated greater prevalence in the posterior region than in the anterior and middle regions. For the spatial orientation of the septum, we found that most septa (81.2% in dentate patients, 53% in edentate patients) were oblique.ConclusionsThree-dimensional evaluation of maxillary sinus septa using 3D CBCT imaging showed that the sinus septum could offer an alternative site for implant placement in the maxillary sinus.
The aim of this study was to investigate the effect of insulin and strontium ranelate treatment on guided bone regeneration in diabetic rats. This study was carried out on 30 adult Wistar rats with an average weight of 250-300 grams. The animals underwent a unilateral osteotomy of the left proximal tibia followed by bone augmentation with collagenized porcine bone xenografts (Osteobiol� mp3, Tecnoss Dental s.r.l., Torino, Italy) and then were randomized into five groups: healthy (H), diabetes (D), diabetes with insuline (DI), diabetes with strontium ranelate (DS) and diabetes with insuline and strontium ranelate (DIS). Histomorphometric analysis was performed at the end of this study.
Vertical bone resorption is a frequent consequence of tooth loss. Hence, implant-supported restorations imply, first of all, bone reconstruction. We aimed to review the current status of guided bone regeneration and autologous bone block augmentation for vertical dental restoration of dental implants. This review identified that between 2009 and 2022 there were few clinical studies that included more than 10 patients and a follow-up period of more than 5 years after bone restoration. The highest vertical bone gain was reported in the autologous bone grafting technique (4–7.6 mm), whereas the minimum augmentation was reported for one of the guided bone regeneration techniques. When comparing intraoral to extraoral bone blocks, the highest values for the mean vertical bone gains were obtained in the cases in which intraoral bone blocks were used as graft material. The highest rate of bone resorption was observed in the extraoral bone block group. Implant survival rate was not significantly influenced by surgical technique. Complications had a higher incidence in autologous bone block augmentation studies. Soft tissue recession showed similar results for guided bone regeneration as for autologous bone block augmentation. Vertical ridge augmentation is a predictable option for the reconstruction of alveolar ridges with severe atrophy, but complications can appear.
BackgroundThe aim of this study was to simulate implant placement in the maxillary sinus septum, as a potential alternative site to avoid sinus grafting.Material/MethodsOne hundred partially or completely edentulous patients, with their maxillary sinus septum present in the edentulous region, were selected from the database of the Department of Maxillofacial Surgery, Cliniques Universitaires Saint Luc, Bruxelles, Belgium.Three-dimensional (3D) reconstructions were created using 3D planning software. 3D reconstructions were performed for each maxillary sinus. Using the software implant library, the implants that presented the best fit with the maxillary sinus septum and that followed the established inclusion criteria were selected.ResultsAll of the implants were inserted in premolar and molar regions. Most implants were inserted in the position of the second molar (21 of 55) or in the position of the first molar (17 of 55). In all sites the most frequently used implant was 4 mm in diameter and 7 mm in height.The mean coronal angle for the implant was 80.19±17.13 degrees and the mean sagittal angle was 94.83±9.94 degrees.The septal height represents 38.13% of the total available bone height (ABH). The mean percentage of the septum used to insert the implants was 47.33±2.47%. The septum increased the available bone height by a mean value of 2.18±1.47 mm.In 45 cases, the septa did not permit implant placement.ConclusionsIn completely edentulous patients, inserting implants in sinus septa does not exclude the need for sinus grafting, but in partially edentulous patients, this minimally invasive technique is an alternative to subantral augmentation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.