Mini-Invasive Endoscopic Approaches to the Maxillary Sinus Floor: A Comparative Anatomical Study

2020 ◽  
pp. 194589242096409
Author(s):  
Elena Felisati ◽  
Alberto Maria Saibene ◽  
Roberto Borloni ◽  
Jean Michel Prades ◽  
Giovanni Felisati
Keyword(s):  
Maxillary Sinus ◽  
Anatomical Study ◽  
Canine Fossa ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
Surgical Field ◽  
Alternative Approaches ◽  
Mcnemar’S Test ◽  
In Vivo Validation

Background While middle antrostomy (MA) is the most common approach to the maxillary sinus (MS), it is known for not allowing to fully inspect the whole MS, especially in its inferior and anterior portions. To overcome this limitation, alternative approaches have been proposed, such as inferior antrotomy (IA) and canine fossa accesses (CFA). Objective Given the lack of studies on the MS floor visualization with different accesses, our study aims, in a cadaver lab setting, to systematically compare three different approaches (MA, IA and CFA) in these regards. Methods Eight cadaver heads, previously submitted to CTscan, were prepared inserting fixtures corresponding to teeth 2, 4, 6, 11, 13 and 15 and into the canine fossae. Three approaches were prepared: a wide MA, an IM and a CFA. We endoscopically evaluated, for each specimen, side, access type and scope angle (0°, 30°, 45°, and 70°), which fixtures were visible on the maxillary sinus floor and whether the canine fossa fixture was visible (MA and IA only). Results IA allowed to visualize all fixtures in nearly all cases (14/16 with 70° endoscope), while MA showed poor visualization results (3/16 with 70° endoscope); CFA failed to gain full visualization in most specimens (7/16 with 70°endoscope). Such difference was statistically significant. MA proved unable to visualize the canine fossa fixture in most cases while IA showed excellent possibilities. All differences were statistically significant (p < .001, Mcnemar’s test). Conclusions Our data show that the IA grants a statistically significant superior surgical field vision when compared to MA and CFA, though in vivo validation of these results is still required.

scholarly journals Late recovery from foreign body sinusitis after maxillary sinus floor augmentation

2012 ◽  
Vol 2012 (dec11 1) ◽  
pp. bcr2012007434-bcr2012007434 ◽  
Author(s):  
G. Felisati ◽  
A. M. Saibene ◽  
R. Lenzi ◽  
C. Pipolo
Keyword(s):  
Foreign Body ◽  
Maxillary Sinus ◽  
Sinus Floor Augmentation ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
Late Recovery ◽  
Maxillary Sinus Floor Augmentation

scholarly journals PRF-Solution in Large Sinus Membrane Perforation with Simultaneous Implant Placement-Micro CT and Histological Analysis

Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 438
Author(s):  
Horia Mihail Barbu ◽  
Stefania Andrada Iancu ◽  
Violeta Hancu ◽  
Daniel Referendaru ◽  
Joseph Nissan ◽  
...  
Keyword(s):  
Maxillary Sinus ◽  
Micro Ct ◽  
Implant Placement ◽  
Membrane Perforation ◽  
Sinus Floor Augmentation ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
The Mean ◽  
Maxillary Sinus Floor Augmentation ◽  
Sinus Membrane

Background: The purpose of the study was to analyze the efficacy of platelet-rich fibrin (PRF) as a single augmentation material for complicated cases of maxillary sinus floor elevation, resulting from membrane perforation or previous infections. Methods: Implant insertion in the posterior region of the maxilla was simultaneously performed with maxillary sinus floor augmentation. Schneiderian membrane elevation can be accompanied by extremely serious sinus membrane perforation, due to accidental tearing or intended incision for mucocele removal. PRFs were placed in the sinus cavity both for membrane sealing and sinus floor grafting. Radiological, histological and micro-CT analyses were performed. Implant survival was assessed every 6 months for 1 to 4 years, with a mean follow up of 1.8 years, after prosthetic loading. Radiological examinations were performed on CBCT at 9 and 12 and 36 months postoperatively and revealed improved degrees of radiopacity. Results: 19 implants were simultaneously placed in the course of nine maxillary sinus floor augmentation surgeries, with successful outcomes in terms of bone grafting and implant integration. New bone formation was evidenced 12 months postoperatively on radiological examination, micro-CT analysis, and histological analysis of a harvested bone segment from the augmented maxillary sinus. The mean gain in bone height of the sinus floor augmentation was 6.43 mm, with a maximum of 9 mm. The mean amount of vital bone obtained from histologic assessment was 52.30%, while bone volume/tissue volume ratio in micro-CT 3D had a mean of 50.32%. Conclusions: PRF may be considered as an alternative treatment for a single surgery of sinus augmentation with simultaneous implant placement, even in complicated cases with significant sinus membrane tearing.

scholarly journals Intrusion of maxillary molar roots into the maxillary sinus in a sample of the Egyptian population using cone beam computed tomography

2021 ◽  
Vol 52 (1) ◽  
Author(s):  
Esraa Ahmed Eid ◽  
Fatma Mostafa El-Badawy ◽  
Walaa Mohamed Hamed
Keyword(s):  
Computed Tomography ◽  
Maxillary Sinus ◽  
Cone Beam Computed Tomography ◽  
Third Molar ◽  
Cone Beam ◽  
Egyptian Population ◽  
Maxillary Molar ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
The Right

Abstract Background The proximity of the maxillary sinus floor to the maxillary molar roots increases the probability of oroantral communication on conducting any surgical or endodontic procedure in the involved area. The aim of this study is to evaluate the relationship between each maxillary molar root and maxillary sinus floor using cone beam computed tomography. Predicting the probability of protrusion of each root into the sinus will consequently predict the probability of occurrence of the oroantral fistula in a sample of the Egyptian population. Results The total number of roots located outside the sinus was 121 (35.3%), while those contacting the sinus floor were 80 (23.3%) and those intruded the sinus were 141 (41.2%). The percentage of root intrusion into the sinus in males (56.9%) was significantly (p = 0.01) higher than females (42.9%). The probability of root intrusion in the left molars (54.2%) was non-significantly (p = 0.067) higher than that of the right side (44.3%). As for the type of tooth, the second molar showed the highest probability of root intrusion into the sinus (55.3%) followed by the third molars (52.6%) then the first molars (40.9). According to the type of root, the mesiobuccal root showed the highest probability of intrusion into the sinus (50.9%) followed by the palatal root (49.1%) then the distobuccal root (47.4%). However, the difference in both type of tooth and type of root was statistically non-significant (p = 0.051 and 0.869 respectively). As for the individual root with the highest probability of intrusion, the mesio-buccal root of the right third molar is the most frequent root to intrude the sinus (71.4%) and the mesio-buccal root of the right first molar is the least frequent (22.7%). Conclusions In a sample of the Egyptian population, males exhibit higher probability of root protrusion into the sinus than females. The side and type of tooth are of higher impact on the probability of its intrusion into the sinus compared to the type of root. Left second molars are at a higher risk of oroantral communications on surgical or endodontic procedures compared to other molars due to its highest probability of intrusion into the sinus.

Modification Of Maxillary Sinus Floor With Orthodontic Treatment and Implant Therapy: A Case Letter

2012 ◽  
pp. 141208072802005
Author(s):  
mehmet saglam ◽  
Serhan Akman ◽  
Sıddık Malkoç ◽  
Sema Sezgin Hakkı
Keyword(s):  
Maxillary Sinus ◽  
Orthodontic Treatment ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
Implant Therapy
Sign in / Sign up

Export Citation Format

Share Document