Multiple Accessory Cusps Expression at Mandibular Third Molar: A Unique Variation of Dental Crown Morphology - A Case Report

@#Accessory cusps are occasional variations in tooth morphology that can be detected clinically. Third molars have a wide range of eruption patterns and shapes but are commonly impacted. Unlike root morphology, variations in the crown morphology of the third molar have rarely been reported. Variations in crown morphology are important because they can affect clinical outcomes. Here, we present a rare case of fully erupted mandibular third molar (MTM) with multiple accessory cusps. This case report describes a case of a 31-year-old female Kenyah with a unique crown morphology of her fully erupted, vital, and functional mandibular third molar (MTM) which has multiple accessory cusps seen on the buccal surface, giving the appearance of a double tooth. Her MTM presented with an incipient caries lesion, which was managed conservatively. Documenting variations in tooth morphology is crucial for individual identification. While most people opt to have their MTMs extracted, early management of well-erupted and functional teeth should be undertaken to prevent disease progression.

Cone-beam CT diagnosis and differential diagnosis of germinated mandibular second molar / 中国基层医药

Objective:To report a case of germinated teeth of the left mandibular second molar diagnosed by cone-beam CT (CBCT), and to investigate its differential diagnosis, pathogenesis, and the application value of CBCT in the diagnosis of oral and maxillofacial diseases.Methods:One case of germinated teeth of the left mandibular second molar diagnosed according to oral general examination ad CBCT findings in Zhenjiang Stomatological Hospital, China in March, 2019 was included in this study. The characteristics and differential points of supernumerary cusp, fused teeth, geminated teeth and concresence of teeth were analyzed based on literatures.Results:CBCT examination showed that the number of mandibular dentition teeth was normal, there was a large area of low-density transmission area around the root of the left mandibular second molar. Three-dimensional reconstruction results revealed that the suspected supernumerary teeth were fused with the root of the left mandibular second molar. Sagittal projections showed that the suspected supernumerary teeth were located in the buccal side of the left mandibular second molar. Axial projections showed three separate root canal orifices at the level of pulp chamber floor, and the dentin of the two was connected. The suspected supernumerary teeth had an independent pulp cavity and a clear root canal, and fused with the distal root canal of the left mandibular second molar in the middle of the root to form a root canal. A "Y"-shaped structure was displayed on the sagittal projections. CBCT showed that the left mandibular second molar was a fused root. Based on oral clinical examination, the left mandibular second molar was confirmed to be a germinated tooth.Conclusion:CBCT is one of the most important means of oral auxiliary examination. It has significant advantages in the diagnosis of tooth abnormalities. It can help clinicians to make correct diagnosis and choose the appropriate treatment scheme. It has certain clinical significance and innovation.

Bilateral Fusion of Permanent Mandibular Incisors: A Rare Developmental Anomaly.

Fusion is a rare developmental anomaly. Th e prevalence ranges from 0.5% to 5% based on geographic, racial, or genetic factors, which occur as a result of physical force or pressure leading to prolonged contact of the adjacent tooth follicles thus resulting in the fusion of tooth buds. Bilateral fusion of teeth has been reported to be very rare as compared to unilateral fusion which is around 0.05%. Although asymptomatic, they can be a predisposing factor for caries and cause periodontal problems due to malalignment in the arch. Th e aim of this article is to present a rare case of bilateral fusion of mandibular anterior teeth and discuss the possible histogenetic mechanism and future treatment prospectives.

Bilateral gemination of maxillary permanent incisors: a case report

Developmental dental disorders may be due to anomalies in tooth number, size, shape and structure. Gemination and fusion are anomalies of shape with close similarity but with different etiology. Gemination and fusion are anomalies of shape with close similarity but with different etiology. The etiology of germination is not fully understood environmental factors such as trauma, vitamin deficiencies, systemic diseases and certain genetic predisposition have been suggested as possible causes. A 9 year old male patient reported to the department of pedodontics and preventive dentistry Dr R Ahmed Dental College & Hospital with the chief complaint of unaesthetic upper front teeth on clinical examination. It was found that the upper central incisors were markedly large in size with buccolingual grooves present partially separating two halves of crown. The incisors were caries free and there was no history of pain or any discomfort. Since the roots were not completely formed the patient was kept on follow up for the treatment to be delivered.

Nonsurgical endodontic retreatment of fused teeth with transposition: a case report

Tooth transposition is a disorder in which a permanent tooth develops and erupts in the normal position of another permanent tooth. Fusion and gemination are developmental disturbances presenting as the union of teeth. This article reports the nonsurgical retreatment of a very rare case of fused teeth with transposition. A patient was referred for endodontic treatment of her maxillary left first molar in the position of the first premolar, which was adjacent to it on the distobuccal side. Orthopantomography and periapical radiography showed two crowns sharing the same root, with a root canal treatment and an associated periapical lesion. Tooth fusion with transposition of a maxillary molar and a premolar was diagnosed. Nonsurgical endodontic retreatment was performed. At four yr follow-up, the tooth was asymptomatic and the radiolucency around the apical region had decreased, showing the success of our intervention. The diagnosis and treatment of fused teeth require special attention. The canal system should be carefully explored to obtain a full understanding of the anatomy, allowing it to be fully cleaned and obturated. Thermoplastic techniques were useful in obtaining hermetic obturation. A correct anatomical evaluation improves the set of treatment options under consideration, leading to a higher likelihood of esthetically and functionally successful treatment.

Quiste radicular asociado a diente geminado: tratamiento endodóntico-quirúrgico / Radicular cyst associated with a geminated tooth: endodontal-surgical treatment

El tratamiento endodóntico-quirúrgico en dientes con quistes inflamatorios radiculares es un desafío clínico debido a su complejidad, y más aún si están en piezas con anomalías de desarrollo dental, como lo es la geminación dentaria. A continuación se presenta un caso clínico en el que se logra la reparación de una lesión apical mediante una necropulpectomía de la pieza geminada y enucleación del quiste adyacente.

The surgical-endodontic treatment of teeth with an inflammatory radicular cyst is a clinical challenge due to its great complexity. Even more so, if they are in teeth with development anomalies such as gemination. The case below shows the repair of an apical lesion by a necro-pulpectomy of the geminated tooth and the enucleation of the adjacent cyst.

"Siamese Twins" - A Mirror Image In Pediatric Dentistry ( Esthetic Rehabilitation of A Geminated Primary Teeth - A Case Report )

Developmental dental disorders may be due to abnormalities in the differentiation of the dental lamina and the tooth germ (anomalies in number size and shape) or to abnormalities in the formation of dental hard tissue (anomalies in structure). The terms “double tooth”, “double formation”, and “joined tooth” or “fused teeth” are often used to describe gemination and fusion, both of which are primary developmental abnormalities of teeth. According to current definitions, gemination occurs when one tooth bud tries to divide, while fusion occurs if two buds unite. Clinical experience shows, however that diagnosis can be complicated due to super imposed anomalies. This report describes a unique case of geminated primary incisors, the potential difficulty in classifying the anomaly and the ways of differentiating gemination from fusion as well as esthetic rehabiliation of the anomaly are discussed.

Tratamento endodôntico de incisivo superior geminado / Endodontic treatment of a geminated maxillary incisor

INTRODUÇÃO: A geminação é uma anomalia que ocorre por conta da tentativa de dois dentes se desenvolverem a partir de um único germe, resultando em um elemento com tamanho maior que o normal, porém com apenas um canal radicular, e que, em decorrência de suas características e peculiaridades, exige atenção quando da realização do tratamento endodôntico. OBJETIVO E RELATO DE CASO: Este estudo tem como objetivo apresentar o tratamento endodôntico de um incisivo central superior portador de geminação. CONCLUSÃO: O planejamento das etapas do tratamento baseado num atento exame clínico e radiográfico faz-se indispensável para a obtenção do sucesso no tratamento endodôntico de dentes geminados.

INTRODUCTION: Gemination is a tooth anomaly caused when a single tooth bud attempts to divide. This results in a tooth with a size greater than normal, but with only one root canal. Therefore, due to its features and singularities, this geminated tooth demands careful attention for endodontic treatment OBJECTIVE AND CASE REPORT: The purpose of this case report is to describe the endodontic treatment of a geminated maxillary central incisor. CONCLUSION: A good planning of all treatment stages, based on a careful clinical and radiographic examination, it is essential to reach the success in the endodontic treatment of geminated teeth.

Dental gemination in the inferior canine in both dentition: case report / Geminación dental en canino inferior en ambas denticiones: reporte de caso

Geminate teeth are anomalies arising from the attempt of the division of a only one germ, characterized by invagination and resulting in incomplete formation of two teeth. In general, it presents two crowns, totally or partially separated, with one root and one root canal. Female patient, 8 years old, Asian descent (Chinese), attended a private clinic (Odemira Dental Clinic) in Odemira, Portugal, for a routine consult. At intraoral clinical examination differentiated coronary anatomy, of the tooth 83 was found, with the presence of a bifid crown in which there was a central groove that came from the cemento-enamel junction. The radiographic exam revealed the presence of only one wide root canal, and two separate pulp cavities, each one corresponding to a portion of the bifid crown. There was also, its permanent successor, with similar radiographic features In our case we could observe the alteration in the inferior canine of both dentition with a bifid crown and radiographically only one root as well as only one root canal with two pulp cavities.

Los dientes geminados son anomalías derivadas del intento de división de un solo germen, que se caracteriza por la invaginación y provoca la formación incompleta de dos dientes. En general, el diente presenta dos coronas, total o parcialmente separadas, con una sola raíz y un conducto radicular. Paciente mujer de 8 años de edad, ascendencia asiática (China), asistió a una clínica privada (Clínica Dental Odemira) en Odemira, Portugal, por una consulta de rutina. Al examen clínico intraoral se encontró una diferencia anatómica coronaria, del diente 8.3, con la presencia de una corona bífida en la cual había un surco central desde la unión cemento-esmalte. El examen radiográfico reveló la presencia de un solo conducto radicular, ancho, y dos cavidades pulpares separadas, cada una correspondiente a una parte de la corona bífida. Además se encontró su sucesor permanente, con similares características radiológicas. En nuestro caso, pudimos observar la alteración en el canino inferior de la dentición, tanto con una corona bífida y una sola raíz radiográficamente, así como un solo canal de la raíz con dos cavidades pulpares.

Gemination in primary teeth – a report of two clinical cases.

Geminated teeth are the consequences of developmental anomalies leading to the eruption of joined elements. According to the current definitions, gemination occurs when one tooth bud tries to divide, while fusion occurs if two tooth buds unite. This article presents two unique cases of gemination of right primary maxillary central incisors. Authors conclude that geminated teeth in primary dentition have to be carefully analyzed as they may be associated with anomalies in the permanent dentition. Correct diagnosis of the condition implicates in a better prognosis for the patient.