scholarly journals Sinus Augmentation—Expect the Unexpected: Diagnostic Anatomical Study

2021 ◽  
Vol 10 (19) ◽  
pp. 4293
Author(s):  
Bahaa Haj Yahya ◽  
Dror Bar-Hai ◽  
David Samehov ◽  
Gavriel Chaushu ◽  
Yafit Hamzani
Keyword(s):  
Nasal Cavity ◽  
Maxillary Sinus ◽  
Medical Center ◽  
Anatomical Study ◽  
Cone Beam ◽  
Sinus Augmentation ◽  
Nasal Sinus ◽  
Distal Edge ◽  
Cone Beam Computerized Tomography ◽  
Distribution Class

“Big-nose variant” is an anatomical phenomenon defined as the pneumatization of inferior third of the nasal cavity within the alveolar ridge while simultaneously displacing the maxillary sinus laterally. The purpose of the present study was to assess the prevalence of the big-nose variant phenomenon and suggest a morphology classification system. Diagnostic anatomical evaluation was performed in a tertiary medical center on 321 randomly selected maxillary cone beam computerized tomography scans of patients who presented at an oral and maxillofacial department. Two anatomical categories were defined for anatomical identification: classes for horizontal mesiodistal distribution, and divisions for vertical distribution. Class 2, defined as location of the nasal/sinus border between the distal edge of the canine up to the distal edge of second premolar, was found to be the most prevalent (64.6%). Class 3, defined as location of the nasal/sinus border distal to mesial edge of the first molar, was found in 17.9% of cases. Regarding the divisions category, in 96% and 58.2% of teeth examined, nasal cavity alone was found to be superior to the canine and first premolar, respectively, defined as Division A. In 46.9% and 85.6% of teeth examined, maxillary sinus alone was located above the second premolar and first molar, respectively, defined as Division C. Identifying Class 3 on the paraxial reconstruction is the first step in identifying big-nose variant, with further assurance gained from each determining division. The use of the classes and divisions may enable better maxillary treatment planning, alert surgeons for the unexpected, and avoid complications.

scholarly journals The Relationship between Maxillary Sinus Lateral Wall Thickness, Alveolar Bone Loss, and Demographic Variables: A Cross-Sectional Cone-Beam Computerized Tomography Study

2018 ◽  
Vol 28 (2) ◽  
pp. 109-114 ◽  
Author(s):  
Tuba Talo Yildirim ◽  
Güliz Nigar Güncü ◽  
Mehmet Colak ◽  
Tolga Fikret Tözüm
Keyword(s):  
Bone Loss ◽  
Maxillary Sinus ◽  
Computerized Tomography ◽  
Wall Thickness ◽  
Alveolar Bone ◽  
Lateral Wall ◽  
Cone Beam ◽  
Cone Beam Computerized Tomography ◽  
And Gender ◽  
The Relationship

Objectives: Sinus floor elevation and augmentation surgery is widely used as a reliable procedure to increase insufficient bone height in the posterior maxillary area. The purpose of the present clinical study was to determine the associations between periodontal bone loss (PBL), maxillary sinus lateral bone wall thickness, age, and gender using cone-beam computerized tomography (CBCT). Materials and Methods: The current retrospective study consists of 716 maxillary sinus CBCT images of 358 patients. The CBCT scans were assessed to detect the relationship between lateral wall thickness and PBL. ANOVA and Student t test analysis were used to determine the influence of PBL on sinus lateral wall thickness. Results: Sinus lateral wall thickness was significantly associated with PBL (p < 0.05) at 3, 13, and 15 mm height. There was no significant association between lateral wall thickness and gender (p > 0.05). However, there was a significant association between lateral wall thickness at 3 and 13 mm and age (p < 0.05). There were significant associations between PBL and age (p < 0.001), and PBL and gender (p < 0.05). Conclusions: PBL might have an association with maxillary sinus lateral bone wall thickness. Further studies are needed to confirm this possible relationship.

Predicting results of intra-sinus implantation

2021 ◽  
Vol 20 (3) ◽  
pp. 59-63
Author(s):  
М. А. Likhanova ◽  
◽  
К. А. Sivolapov ◽  
Keyword(s):  
Nasal Cavity ◽  
Maxillary Sinus ◽  
Mucociliary Clearance ◽  
Physiological State ◽  
The State ◽  
Factors Affecting ◽  
Functional Methods ◽  
Cone Beam Computerized Tomography ◽  
Maxillary Sinuses

The study included 564 patients with a deficit in the volume of bone tissue of the alveolar process of the maxillary bone, which did not allow simultaneous installation of crestal implants. The work was carried out relying on modern forecasting systems based on an aggregate and quantitative assessment of the risk of intra- and postoperative complications, anatomical and physiological state of tissues and organs in the area of intervention. In the course of the study, a system for predicting the results of subaxillary augmentation was developed. Factors affecting the nature and frequency of complications in the immediate and long-term postoperative periods are highlighted. A comparative assessment of the functioning of the mucociliary clearance depending on the volume and location of the augmentate is given. Functional methods of investigation – spiral computed tomography and cone-beam computerized tomography – of maxillary bones, video endoscopy of the nasal cavity, study of mucociliary clearance, anterior active rhinomanometry were used. The assessment of the state of the augmentate, pneumatization of the maxillary sinuses, the anatomy of the nasal cavity, paranasal sinuses, the state of the maxillary sinus mucosa, the vertical volume of the walls of the maxillary sinus, and the evacuation capacity of the maxillary sinuses were evaluated. A score was determined for each of the studied parameters. Patterns of preoperative changes in the maxillary sinuses that led to complications in the postoperative period were identified. For each of these parameters, the amount of points collected can range from 1 to 5 points. The higher the score, the higher the probability of successful surgical treatment. If the sum of points is from 1 to 2, forecast of subaxillary augmentation is unfavourable, for 3 points is questionable, with a score of 4–5, the prognosis is favourable.

Air exchange in the maxillary sinus in the postoperative period after maxillary sinusotomy through the inner and middle nasal airway

2018 ◽  
pp. 43-49
Author(s):  
Alexander Naumenko ◽  
Lilia Krinichko ◽  
Rezmak K.F. Mohammed
Keyword(s):  
Reynolds Number ◽  
Nasal Cavity ◽  
Maxillary Sinus ◽  
Postoperative Period ◽  
Air Flow ◽  
External Respiration ◽  
Nasal Airway ◽  
Airflow Velocity ◽  
Nasal Sinus ◽  
Air Exchange

There are many computer models that describe the airflow in various anatomical variants and the pathology of the nasal cavity and paranasal sinuses. The data that describe the Reynolds number and airflow velocity in the different section of the nasal cavity of the patients with cyst of the maxillary sinus are very different. The results of operation of the maxillary sinusotomy through the middle nasal airway are disjointed and contradictory. There is also a little information of aerodynamics in the odontogenic pathology of the maxillary sinus. Purpose: Calculate airflow velocity in various sections of the nasal cavity, and air exchange in the maxillary sinus in patients with cysts of the maxillary sinus in the postoperative period after endonasalmaxillary sinusotomy through the lower and middle nasal airway. Material and methods: 112 patients with maxillary sinus cyst were examined. Patients were divided into three clinical groups. The first group, 41 people, included patients who had removed the cysts of the maxillary sinus through the lower nasal airway, as well as intact structures of the middle nasal passage remained. The second group included 38 patients who had removed the maxillary sinus cyst through the middle nasal airway. In the third group, were selected 33 patients, who had not been diagnosed with nasal and nasal sinus pathology, but they were examined by an ENT specialist before implantation of the teeth. Computer tomography of nasal sinuses was performed for all patients. The Planmeca Tomography, manufactured in Finland, was used, with the further processing of information using the software Romexis Viewer. Using the Romexis Viewer software and MeshLabit was measured the size of the anatomical structures of the nasal cavity and nasal sinuses, the calculation of air flow velocity at the airways of the nasal cavity, the calculation of the Reynolds number. To calculate the parameters of external respiration, all patients were examined for external respiration using a mask spirometer. Statistical processing of the obtained data was carried out using SPSS software 13. Results: The rate of air flow that passes through the nasal cavity on the inhalation and exhalation in the postoperative period in patients with cysts of the maxillary sinus that has undergone endonazal maxillary sinusotomy through the lower nasal airway, is statistically no different from those patients who had no pathology of the nasal cavity and nasal sinuses. The volume of air exchange in the case of removal maxillary cyst through the lower nasal airway does not statistically differ from the volume of air exchange in patients without pathology of the nasal cavity and nasal sinuses.

scholarly journals The Radiographic Management for Surgical Planning and Implant Placement: a Case of Atypical Antral Artery Position

2018 ◽  
Vol 20 (1) ◽  
pp. 8
Author(s):  
Júlio César Schroder ◽  
Ana Paula Tulio Manfron ◽  
Alessandra Soares Ditzel ◽  
Aaron Trujillo ◽  
Angela Deliga Schroder ◽  
...  
Keyword(s):  
Maxillary Sinus ◽  
Surgical Planning ◽  
Cone Beam ◽  
Bleeding Complications ◽  
Radiographic Examination ◽  
Radiographic Evaluation ◽  
Sinus Augmentation ◽  
Implant Placement ◽  
Sinus Floor Augmentation ◽  
Sinus Floor

O conhecimento do suprimento sanguíneo do seio maxilar, em particular da parede lateral, é de considerável importância devido à possibilidade de rompimento acidental de uma artéria durante os procedimento de elevação do assoalho do seio maxilar. Paciente do sexo feminino, 65 anos de idade, com histórico de complicação pós-operatória, após procedimento de elevação do seio maxilar realizado há três anos. Após avaliação tomográfica, foi observada a presença da artéria antral em posição atípica. Identificar e reconhecer essa estrutura anatômica pelo exame radiográfico pré-operatório, evita possíveis complicações hemorrágicas, durante e após o procedimento cirúrgico.Palavras-chave: Tomografia Computadorizada de Feixe Cônico. Seio Maxilar. Procedimentos Cirúrgicos Operatórios.AbstractIt is very important the knowledge of the maxillary sinus blood supply, in particular of the lateral maxillary wall, due to the possibility of accidental rupture of a vessel during the sinus floor augmentation. A case report is described of a 65-year-old female, who reported a postoperative complication after a sinus augmentation that she had had 3 years before. After radiographic evaluation, it was observed the presence of antral artery in atypical position. The identification of this anatomical structure is very important, by preoperative radiographic examination, avoiding possible bleeding complications, during and after the surgical procedures.keywords: Cone-Beam Computed Tomography. Maxillary Sinus. Surgical Procedures, Operative.

Prevalence of pathologic findings in the maxillary sinus in cone-beam computerized tomography

2011 ◽  
Vol 111 (5) ◽  
pp. 634-640 ◽  
Author(s):  
Lutz Ritter ◽  
Jürgen Lutz ◽  
Joerg Neugebauer ◽  
Martin Scheer ◽  
Timo Dreiseidler ◽  
...  
Keyword(s):  
Maxillary Sinus ◽  
Computerized Tomography ◽  
Cone Beam ◽  
Pathologic Findings ◽  
Cone Beam Computerized Tomography

scholarly journals Cone Beam CT-Based Preoperative Volumetric Estimation of Bone Graft Required for Lateral Window Sinus Augmentation, Compared with Intraoperative Findings: A Pilot Study

2018 ◽  
Vol 12 (1) ◽  
pp. 820-826
Author(s):  
Nagla'a A. Abdel-Wahed ◽  
Maha Ahmed Bahammam
Keyword(s):  
Pilot Study ◽  
Bone Graft ◽  
Sample Size ◽  
Maxillary Sinus ◽  
Cone Beam ◽  
Graft Material ◽  
Sinus Augmentation ◽  
Bone Graft Material ◽  
Segmentation Technique ◽  
Atrophic Maxilla

Introduction: The presence of an atrophic maxilla creates a serious challenge in cases of implant placement, while maxillary sinus pneumatization further complicates the surgery. This pilot study was performed to investigate the validity of two techniques used to estimate the volumes of bone graft material required in cases that included lateral window sinus augmentation. Materials and Methods: Cone beam computed tomography was used for preoperative volumetric analysis of the maxillary sinus. The analysis was performed using the manual measurement of sinus dimensions, as well as automated measurements via the segmentation technique. The estimated volumes of required bone graft material were compared with actual intraoperative findings in cases requiring lateral window sinus augmentation. For this pilot study, only 5 patients were selected to be included. Results: To achieve 80% power and confidence interval of 95%, the sample size should be 35 patients. The correlation coefficient between the segmented volume and mm3 used was – 0.5332, whereas the coefficient between the manual volume and mm3 used was – 0.6784. Consequently, both results indicate that the two methods have a moderate negative correlation with the mm3 used. Conclusion: Performing a similar study with an increased number of patients, according to the calculated sample size, increases the possibility of revealing higher correlation between the methods used to analyze the partial volume of the sinus cavity. The estimated sinus volume of the area of augmentation, obtained by using either manual or segmentation techniques, could be considered as a maximum estimate for the required amount of graft material. Furthermore, the segmentation technique may be valuable in preoperative planning of sinus augmentation, as it reveals the topographic shape and morphology of the sinus.

scholarly journals Evaluation of maxillary sinus width on cone-beam computed tomography for sinus augmentation and new sinus classification based on sinus width

2012 ◽  
Vol 25 (6) ◽  
pp. 647-652 ◽  
Author(s):  
Hsun-Liang Chan ◽  
Fernando Suarez ◽  
Alberto Monje ◽  
Erika Benavides ◽  
Hom-Lay Wang
Keyword(s):  
Computed Tomography ◽  
Maxillary Sinus ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Sinus Augmentation
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