UNASSIGNED: The standard treatment for a dentigerous cyst of maxilla is a surgical enucleation, the extraction of the tooth. In the case of cysts involving the maxillary sinus, a Caldwell-Luc approach is used. In case of large cysts, its marsupialization is carried out in order to reduce the bone defect, followed by enucleation and extraction of the tooth.
UNASSIGNED: This is a case of a large follicular dentigerous cyst of upper jaw with 18 ectopic tooth within the maxillary sinus, treated in our Unit.
UNASSIGNED: We decided to perform a multi-portal access, the intraoral endoscopic-assisted technique; an intraoral approach has been performed, but less demolishing than the routine intraoral approach, through the anterior wall of the maxillary sinus, already eroded by the lesion. The lesion was very large, occupying the entire maxillary cavity. For this reason, by means of the intraoral approach alone, it was extremely difficult to remove the lesion in its entirety. The endoscopic-assisted technique was combined with intraoral approach. The lesion extended to the maxillary ostium. This did not allow to reach the ostium through the classic endoscopic approach. Endonasal endoscopic access was used both to enucleate the cyst, that was adherent to the orbital floor and soft tissues of the OMC (osteomeatal complex), and to restore the physiological drainage of the maxillary sinus.
UNASSIGNED: We decided to perform a combined intraoral and endoscopic approach to allow a complete excision of the cystic lesion, without being very demolishing and taking advantage of the bone erosion already caused by the large cyst.

BACKGROUND: Dentigerous cysts are slow-growing, asymptomatic lesions that typically form around the crowns of impacted teeth. They are not detected until they start to harm the tissues around the teeth.
OBJECTIVE: The present study aimed to describe surgical techniques for treating dentigerous cysts associated with ectopic teeth.
METHODS: Three patients with dentigerous cysts associated with ectopic teeth, their surgical approaches, and the supporting literature are presented herein. In two cases, the surgical technique used was intra-oral, and in one case was extra-oral. Under general anesthesia, dentigerous cyst enucleation and ectopic tooth removal were carried out.
CONCLUSIONS: In the present study, the ectopic tooth cases were all linked to dentigerous cysts. Enucleation or marsupialization treatments could be used to treat dentigerous cysts. Enucleation with the removal of the impacted tooth is the preferred treatment for dentigerous cysts.
CONCLUSIONS: To perform minimally invasive surgery, the position of the ectopic teeth, the accessibility of the surgical site, the degree of bone reduction, and the simplicity of instrumentation should all be considered.

Ectopic teeth in the maxillary sinus are a rare finding and pose a diagnostic challenge due to their unusual location and clinical management. A 28-year-old man presented with complaints of discomfort and pressure in the maxillary sinus region. A CT scan and cinematic rendering revealed the presence of ectopic teeth in the maxillary sinus bilaterally. The use of cinematic rendering provided a more detailed and accurate visualization of the ectopic teeth and surrounding anatomical structures. A CT scan is the primary imaging modality used for the diagnosis and visualization of ectopic teeth in the maxillary sinus. In addition, the use of cinematic rendering can improve diagnostic accuracy and reduce the need for further imaging studies. The use of CT and cinematic rendering can help in the diagnosis and visualization of ectopic teeth in the maxillary sinus, aiding in the planning of surgical interventions.

Etopic tooth eruption is the occurrence of the tooth germ in a nonanatomical position. It can be associated with dentigerous cyst, which is the second most seen in the development of odontogenic cyst commonly presented in mandibular region and seen in single form. It is usually accompanied with mandibular third molar followed by canine. Bilateral and multiple dentigerous cysts in nonsyndromic patients are fairly rare phenomenon and barely documented in the literatüre. We report a rare case of bilateral dentigerous cysts associated with ectopic third molars in the maxillary sinuses. Computerized tomography scan confirmed the diagnosis. A 32-year-old female patient manifesting as postnasal discharge accompanied with chief complaint of nasal obstruction, pain at blinking right eye from pressure of cyst at the inferior orbital rim, and headache for the last 1 year. This report presented our management of rarely seen case of bilateral dentigerous cysts related with ectopic third molars in maxillary sinuses. Ectopic teeth eruption in maxillary sinus should be treated as early as possible once it is diagnosed, in consideration of related complication of orbital and nasal involvement. The symptoms totally recovered with the suitable management method for our patient. The prevalence of maxillary third molars ectopic eruption in the maxillary sinus (Antrum of Highmore) is extremely rare in the literature. Lack of treatment protocol for such ectopic eruptions in the maxillary sinus and its rareness deserved to be added to the literature.

Around 10-20% of sinusitis have a dental etiology. Odontogenic sinusitis is generally caused by periodontitis, peri-implantitis, periapical pathology, or oroantral communication. Ectopic teeth are a rare cause of chronic odontogenic sinusitis. We present a rare case of chronic sinusitis caused by five ectopic teeth. A 39-year-old-female patient presented to our clinic with complaints of facial pain over the left cheek, ipsilateral nasal obstruction, ipsilateral rhinorrhea, and coughing over the last five years. Physical examination revealed a febrile patient. There was an ipsilateral purulent nasal discharge of yellow color. Inspection of the oral cavity revealed the absence of the following maxillary teeth: left first and second premolars, in addition to the left first, second, and third molars. There was also tenderness upon palpation of the left maxillary sinus. Computed tomography (CT) scan of the maxillary sinus revealed hyperdense structures in the left maxillary sinus surrounded by soft tissue, representing the missing premolar and molar teeth. The patient was treated with amoxicillin-clavulanate and corticosteroid, which partially relieved her symptoms. Our case presents an unusual case of chronic sinusitis that was found to be a consequence of five ectopic teeth in the maxillary sinus. A careful physical examination and an appropriate imaging modality are indispensable for the diagnosis of such a rare phenomenon.

UNASSIGNED: To perform a systematic review of the characteristics of ectopic mandibular third molar (EMTM) in terms of its clinical presentation, radiographic findings, associated lesions, management and post-operative complications.
UNASSIGNED: We searched the Pubmed, Medline, Embase and EBSCO databases for full-text, peer-reviewed journal publications from January 1965 to August 2020. Data extraction was done using preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines.
UNASSIGNED: Our search yielded 45 case reports involving 48 EMTM teeth. The mean age of the patients was 46.3 years with an age range of 22-80 years. Thirty-two cases were seen in women as compared to 13 cases in men. The majority of the cases (42) were unilateral, with only three bilateral cases. Among the 48 EMTM teeth, 21 were seen in the condylar region followed by 13 in the ramus, seven in the sigmoid notch, three in the angle and two each in the coronoid process and the lower border of the mandible. Twenty-five EMTM teeth had histopathologically confirmed dentigerous cysts, eight teeth had chronic infection/inflammation/granulation tissue, two had radicular cysts, two had infected cysts, two teeth had normal follicular spaces, and associated lesions were not mentioned for nine teeth. The most common symptoms were swelling (33 teeth) and pain (29 teeth), and six teeth were asymptomatic. Surgical removal through intraoral approach was carried out for 27 teeth, while an extra-oral approach was adopted in 15 teeth, a spontaneous regression of the pericoronal radiolucency was noticed in one tooth, four teeth were not treated and choice of treatment was not mentioned for one tooth. Mild transient paraesthesia was frequently observed; however, serious post-surgical complications were not reported.
UNASSIGNED: The present review found that EMTM can present with complex clinicopathological characteristics, with a majority of the cases being asymptomatic in the beginning and turning out to be symptomatic with lesions at later stages, requiring surgical intervention.

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BACKGROUND: Dentigerous cysts are the second most common form of benign odontogenic cysts. These cysts are commonly single lesions. Bilateral and multiple dentigerous cysts are very rare.
METHODS: This article presents a rare case report of bilateral dentigerous cysts associated with two ectopic teeth located atypically in the maxillary sinuses in a 19-year-old male manifesting as bilateral upper jaw pain, post-nasal discharge and recurrent sinusitis which was managed via the endonasal endoscopic approach by enucleation of the cysts and teeth removal.
CONCLUSIONS: This paper presented our experience in the management of a rare case of bilateral dentigerous cysts associated with ectopic teeth in the maxillary sinuses. Ct scan of the paranasal sinuses confirmed the diagnosis and the endonasal endoscopic approach is superior to the external approaches in preserving physiological function in managing these patients.

Ectopic eruption of teeth is a rare phenomenon although there have been reports of teeth in the nasal septum, mandibular condyle, and maxillary sinus. This impaction can present itself in a variety of ways such as chronic or recurrent sinusitis, sepsis, and facial numbness and can also be asymptomatic. The aim of this study was to describe, by means of research literature and by a case report, the characteristics and occurrence of ectopic eruption in the maxillary sinus. We have analyzed and compared clinical cases of ectopic teeth in the maxillary sinus with a search on PubMed utilizing keywords such as \"ectopic,\" \"teeth,\" \"sinus,\" \"maxillary,\" and Boolean operators \"or\" and \"and\" up until 2016. Fifty-one cases were found, of which 53% were female. The age ranged between 3 and 72 years, with an average age of 28.36 years. The higher prevalence of ectopic teeth is the 3rd molars. Ten of these teeth are associated with a dentigerous cyst, 1 by an osteoma, and 2 by soft tissue. Standard treatment for an ectopic tooth is extraction, but for other patients, treatment of choice in asymptomatic ectopic tooth cases is continued observation. Ectopic teeth tend to form a cyst or tumor if not managed.

In this paper, we report a case of ectopic teeth in the right ethmoid sinus which was successfully removed by nasal endoscopic surgery.