scholarly journals Case Report: Ectopic third molar in the maxillary sinus with infected dentigerous cyst assessed by cone beam CT

F1000Research ◽  
2020 ◽  
Vol 9 ◽  
pp. 209
Author(s):  
Khairy Elmorsy ◽  
Lubna K. Elsayed ◽  
Sara M. El Khateeb
Keyword(s):  
Maxillary Sinus ◽  
Cone Beam Ct ◽  
Dentigerous Cyst ◽  
Third Molar ◽  
Panoramic Radiograph ◽  
Cone Beam ◽  
Purulent Discharge ◽  
Uneventful Recovery ◽  
Radiographic Examination ◽  
Second Molar

Ectopic development of teeth in nondental areas is uncommon, especially in the maxillary sinus. A panoramic radiograph is the routine diagnostic radiographic examination performed for this type of eruption, although cone beam computed tomography (CBCT) is highly recommended for further localization of the ectopic tooth and assessment of the characteristics of any associated lesion before a surgical procedure. We report a case of a 13-year-old female student who presented with purulent discharge posterior to the upper right second molar with a bad taste and foul odour. Radiographic examination revealed a maxillary third molar tooth located at the posterosuperior aspect of the right maxillary sinus with a hyperdense lesion surrounding the crown, obliterating the sinus cavity. Both the tooth and dentigerous cyst were surgically removed under general anaesthesia through Caldwell-Luc antrostomy. After a three-month follow-up, the patient was symptom free and had an uneventful recovery. The rare and critical location of the reported third molar along with the infected dentigerous cyst indicates its complete enucleation to avoid complications as recurrence or malignant transformation.

scholarly journals Case Report: Ectopic third molar in the maxillary sinus with infected dentigerous cyst assessed by cone beam CT

F1000Research ◽  
2020 ◽  
Vol 9 ◽  
pp. 209
Author(s):  
Khairy Elmorsy ◽  
Lubna K. Elsayed ◽  
Sara M. El Khateeb
Keyword(s):  
Maxillary Sinus ◽  
Cone Beam Ct ◽  
Dentigerous Cyst ◽  
Third Molar ◽  
Panoramic Radiograph ◽  
Cone Beam ◽  
Purulent Discharge ◽  
Uneventful Recovery ◽  
Radiographic Examination ◽  
Second Molar

Ectopic development of teeth in nondental areas is uncommon, especially in the maxillary sinus. A panoramic radiograph is the routine diagnostic radiographic examination performed for this type of eruption, although cone beam computed tomography (CBCT) is highly recommended for further localization of the ectopic tooth and assessment of the characteristics of any associated lesion before a surgical procedure. We report a case of a 13-year-old female student who presented with purulent discharge posterior to the upper right second molar with a bad taste and foul odour. Radiographic examination revealed a maxillary third molar tooth located at the posterosuperior aspect of the right maxillary sinus with a hyperdense lesion surrounding the crown, obliterating the sinus cavity. Both the tooth and dentigerous cyst were surgically removed under general anaesthesia through Caldwell-Luc antrostomy. After a three-month follow-up, the patient was symptom free and had an uneventful recovery. The rare and critical location of the reported third molar along with the infected dentigerous cyst indicates its complete enucleation to avoid complications as recurrence or malignant transformation.

scholarly journals Infected Dentigerous Cyst of Maxillary Sinus Arising from an Ectopic Third Molar

2013 ◽  
Vol 3 ◽  
pp. 7 ◽  
Author(s):  
Yadavalli Guruprasad ◽  
Dinesh Singh Chauhan ◽  
Umashankar Kura
Keyword(s):  
Maxillary Sinus ◽  
Rare Case ◽  
Dentigerous Cyst ◽  
Third Molar ◽  
Radiographic Examination ◽  
Palpable Mass ◽  
Follicular Cyst ◽  
Pathologic Features ◽  
Dentigerous Cysts ◽  
Ectopic Third Molar

A dentigerous cyst or follicular cyst is a form of odontogenic cyst. It is believed that it forms during the development of the tooth and is associated with pressure exerted by the crown of an unerupted (or partially erupted) tooth on the fluid within the follicular space. Typically, dentigerous cysts are painless and discovered during routine radiographic examination. However, they may be large and result in a palpable mass. Additionally, as they grow they displace adjacent teeth. They almost exclusively occur in permanent dentition. The cyst is lined by stratified squamous non-keratinizing epithelium. About 70% of dentigerous cysts occur in the mandible and 30% in the maxilla. Dentigerous cysts associated with ectopic teeth within the maxillary sinus are very rare. We report radiologic and pathologic features in a rare case of infected dentigerous cyst of maxillary sinus arising from an ectopic third molar in a 21-year-old female patient.

scholarly journals Odontogenic Sinusitis Caused by an Inflammation of a Dentigerous Cyst and Subsequent Finding of a Fibrous Dysplasia. A Case Report

2016 ◽  
Vol 10 (1) ◽  
pp. 647-655 ◽  
Author(s):  
Carmen López-Carriches ◽  
Inmaculada López-Carriches ◽  
Rafael Baca-Perez Bryan
Keyword(s):  
Maxillary Sinus ◽  
Fibrous Dysplasia ◽  
Maxillary Sinusitis ◽  
Dentigerous Cyst ◽  
Third Molar ◽  
Complete Recovery ◽  
Diagnostic Methods ◽  
Radiographic Examination ◽  
Follicular Cyst ◽  
Odontogenic Sinusitis

We report the case of a 38-year old male patient with sinusitis caused by an infected follicular cyst due to an ectopic impacted third molar in the right maxillary sinus. A 10-day antibiotherapy regimen was administered; subsequently, the cyst and the third molar were removed achieving complete recovery. Fibrous dysplasia was diagnosed at follow-up examination (occupation of the maxillary sinus by bone tissue was observed in a radiographic examination) and confirmed by biopsy. In cases of odontogenic sinusitis, thorough examination is crucial, as evidenced by the case reported in this study. A Literature review was performed in order to identify the diagnostic methods currently available and the clinical features, complications and treatment for both, odontogenic maxillary sinusitis and fibrous dysplasia.

scholarly journals Assessment of the Retromolar Canal in Taiwan Subpopulation: A Cross-Sectional Cone-Beam Computed Tomography Study in a Medical Center

Tomography ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 219-227
Author(s):  
Yen-Wen Shen ◽  
Wan-Chun Chang ◽  
Heng-Li Huang ◽  
Ming-Tzu Tsai ◽  
Lih-Jyh Fuh ◽  
...  
Keyword(s):  
Medical Center ◽  
Third Molar ◽  
Mandibular Canal ◽  
Cone Beam ◽  
Horizontal Distance ◽  
Taiwanese Population ◽  
Mandibular Bone ◽  
Second Molar ◽  
The Third ◽  
Retromolar Canal

The retromolar canal is an anatomical variation that occurs in the mandibular bone. The retromolar canal typically originates in the mandibular canal on the distal side of the third molar and extends forward and upward to the retromolar foramen (RMF), which contains the neurovascular bundle. Accidentally damaging the neurovascular bundle in the retromolar canal during the extraction of the third molar, dental implant surgery, or maxillofacial orthognathic surgery may lead to subsequent complications such as incomplete local anesthesia, paresthesia, and bleeding during operation. The objective of this study was to investigate the prevalence of the RMF in the Taiwanese population in a medical center by using dental cone-beam computed tomography (CBCT) and to identify the position of the RMF in the mandibular bone. The dental CBCT images for the mandibular bone of 68 hemi-mandible were uploaded to the medical imaging software Mimics 15.1 to determine the prevalence of the RMF in the Taiwanese population and the three positional parameters of the RMF in the mandibular bone: (1) The diameter of the RMF, (2) the horizontal distance from the midpoint of the RMF to the distal cementoenamel junction of the second molar, and (3) the vertical distance from the midpoint of the RMF to the upper border of the mandibular canal. Seven RMFs were observed in the 68 hemi-mandibles. Thus, the RMF prevalence was 10.3%. In addition, the diameter of the RMF was 1.41 ± 0.30 mm (mean ± standard deviation), the horizontal distance from the midpoint of the RMF to the distal cementoenamel junction of the the second molar was 12.93 ± 2.87 mm, and the vertical distance from the midpoint of the RMF to the upper border of the mandibular canal below second molar was 13.62 ± 1.3487 mm. This study determined the prevalence of the RMF in the Taiwanese population in a medical center and its relative position in the mandibular bone. This information can provide clinicians with a reference for posterior mandible anesthesia and surgery to ensure medical safety.

scholarly journals Influence of the Periapical Status of the Posterior Maxillary Teeth on the Width of the Schneiderian Membrane of the Maxillary Sinus Mucosa

2021 ◽  
Vol 11 (9) ◽  
pp. 3908
Author(s):  
Igor Tsesis ◽  
Eyal Rosen ◽  
Ilan Beitlitum ◽  
Einat Dicker-Levy ◽  
Shlomo Matalon
Keyword(s):  
Maxillary Sinus ◽  
Third Molar ◽  
Root Tips ◽  
Schneiderian Membrane ◽  
Second Molar ◽  
Periapical Lesions ◽  
Posterior Maxilla ◽  
Mucosal Thickness ◽  
Tooth Type ◽  
Mucosal Thickening

Background: Various parameters are known to affect the amount and type of mucosal thickening. The aim of this retrospective study was to investigate these effects through a survey of cone-beam computed tomography (CBCT) images. CBCT scans of 150 patients, which included the area of the MS and maxillary teeth (canine, first premolar, second premolar, first molar, second molar, and third molar), were evaluated retrospectively for the presence of sinus mucosal thickening. The parameters evaluated as possible causes of mucosal thickening were age, sex, tooth type, proximity to the maxillary sinus, endodontic treatment, and periapical lesion. Descriptive statistics and multiple logistic regression were used to analyze the data. A total of 28% of the teeth presented with mucosal thickening, which was associated with periapical lesions in 57.1% of 77 cases. The size of the lesion was the only parameter that was found to be significantly connected to the presence of mucosal thickness. More than 50% of teeth with periapical lesions in the posterior maxilla exhibited mucosal thickening. Other parameters such as age, sex, and the position of the root tips in relation to the MS floor did not influence the probability of developing mucosal thickening.

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.

scholarly journals A Diagnosis of Maxillary Sinus Fracture with Cone-Beam CT: Case Report and Literature Review

2014 ◽  
Vol 7 (2) ◽  
pp. 85-91 ◽  
Author(s):  
Selmi Yardimci Yilmaz ◽  
Melda Misirlioglu ◽  
Mehmet Zahit Adisen
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Maxillary Sinus ◽  
Cone Beam Ct ◽  
Maxillofacial Surgery ◽  
Maxillofacial Trauma ◽  
Cone Beam ◽  
Maxillofacial Region ◽  
Emergency Center ◽  
Frontal Wall

The purpose of this article is to present the case of maxillofacial trauma patient with maxillary sinus fracture diagnosed with cone-beam computed tomography (CBCT) and to explore the applications of this technique in evaluating the maxillofacial region. A 23-year-old male patient attempted to our clinic who had an injury at midface with complaints of swelling, numbness. The patient was examined before in emergency center but any diagnosis was made about the maxillofacial trauma. The patient re-examined clinically and radiographically. A fracture on the frontal wall of maxillary sinus is determined with the aid of CBCT. The patient consulted with the department of maxillofacial surgery and it is decided that any surgical treatment was not necessary. The emerging technique CBCT would not be the primary choice of imaging maxillofacial trauma. Nevertheless, when advantages considered this imaging procedure could be the modality of choice according to the case.

scholarly journals Relationship Between Maxillary Sinus Hypoplasia and Maxillary Occlusal Cant: A Cone Beam CT Study

2021 ◽  
Author(s):  
Noura A. Alsufyani ◽  
Michael P. Major ◽  
Paul W. Major
Keyword(s):  
Maxillary Sinus ◽  
Cone Beam Ct ◽  
Degenerative Joint Disease ◽  
Joint Disease ◽  
Cone Beam ◽  
Mandibular Asymmetry ◽  
Spearman's Rho ◽  
Spearman’S Rho ◽  
Different Types ◽  
Maxillary Sinus Hypoplasia

Abstract Background: maxillary sinus hypoplasia (MSH) has been reported to cause a cant in the orbital plane. No similar reports exist about the possible impact on the maxilla. The aim of this study was to assess if MSH is associated with maxillary occlusal plane (MOP) cant, and if dental or mandibular factors influenced the existence of the MOP cant. Methods: 80 cone beam CT images of subjects with MSH were analyzed for type of MSH, degree of MOP cant, open or cross bite, mandibular asymmetry, and degenerative joint disease of the temporomandibular joints. The subjects were compared with a control group matched by age and gender. Results: The degree of MOP cant (range 0-5.1°) was not statistically significantly different in unilateral vs bilateral MSH, or between the different types of MSH. The frequency of open bite, crossbite, mandibular asymmetry, or degenerative joint disease in unilateral vs bilateral MSH, or between the different types of MSH was not statistically significantly different. Between the case and control, there was no statistically significant difference in the degree of MOP cant (1.3±1.1° vs 1.1±0.9°, respectively), or frequency of dental and mandibular factors. There was low positive linear correlation between MOP cant and mandibular symmetry in MSH subjects (Spearman’s rho= 0.23) and controls (Spearman’s rho= 0.187). Conclusions: The data suggests a view of the alveolar bone as the adaptable skeletal unit to ensure and bridge the functionality between the nasomaxillary complex and TMJ system – two systems with very different function, and therefore largely independent “matrix units”.

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