Nonsurgical Endodontic Treatment of Type II Dens Invaginatus in A Maxillary Lateral Incisor: A Case Report.

Dens invaginatus (DI) is one of the developmental dental anomalies that results in an invagination of the enamel organ into the dental papila during odontogenesis. The purpose of this study is to report a case of nonsurgical endodontic treatment of an Oehlers type II DI in a right maxillary lateral incisor with an extensive periapical damage, along with the two-year clinical and tomographic follow-up. A 30-year-old patient was referred for endodontic treatment of tooth #12. On clinical examination, a change in the shape and color of the crown was observed. The tooth responded negative to pulp sensibility, percussion, palpation and mobility tests. After tomographic evaluation, an Oehlers type II DI was visualized, in addition to an extensive periradicular lesion. The diagnosis was asymptomatic apical periodontitis. The treatment was carried out in two sessions, through intense enhancement of the auxiliary chemical substance with passive ultrasonic irrigation, XP-Endo Finisher and the use of hydroxide-based intracanal medication. Appropriate treatment in cases with anatomic variations requires an accurate and early diagnosis based on clinical examination and radiographic images. A two-year follow-up of the present case showed that the correct diagnosis associated with appropriate instrumentation techniques, supplementary disinfection, and adequate three-dimensional sealing of the canal with filling material, resulted in regression of the periradicular lesion and bone repair.

Successful nonsurgical treatment of type II dens invaginatus with 5 root canals using a self-adjusting file: a case report.

The present report describes the endodontic treatment of an Oehlers type II dens invaginatus in a maxillary lateral incisor with 5 root canals, an extremely rare condition. Apical periodontitis and related symptoms were noted. Cone-beam computed tomography was used to aid the diagnosis, reveal tooth morphology, and assist in canal location. The pulp chamber was carefully accessed, and the root canals were explored under magnification. All root canals were prepared with an R25 Reciproc Blue system and sodium hypochlorite (NaOCl) irrigation. After initial preparation, a self-adjusting file (SAF) with NaOCl and ethylenediaminetetraacetic acid was used to complement the disinfection. Additionally, calcium hydroxide medication was applied. Vertical compaction was used to fill the canals with a calcium silicate-based endodontic sealer and gutta-percha. After 12 months, the patient exhibited healing of the periapical region, absence of symptoms, and normal dental function. In conclusion, this nonsurgical treatment protocol was successful in promoting the cure of apical periodontitis. Both complementary disinfection with an SAF and use of calcium hydroxide medication should be considered when choosing the best treatment approach for dens invaginatus with very complex anatomy.

Dens Invaginatus: Clinical Implications and Antimicrobial Endodontic Treatment Considerations.

Dens invaginatus or dens in dente is a developmental dental anomaly resulting from an invagination of the enamel organ into the dental papilla during odontogenesis. Radiographically, it is usually seen as a radiolucent invagination surrounded by a radiopaque area (enamel) limited to the tooth crown or extending into the root. Because the invagination is opened to the oral cavity, it can retain saliva, food remnants, and bacteria. In conditions where the enamel lining of the invagination is naturally absent or lost because of caries, bacterial cells and products can diffuse from the invagination through the dentin tubules to reach the pulp and cause disease. Management of teeth with dens invaginatus includes preventive sealing or filling of the invagination, or if the pulp is affected, therapeutic options include vital pulp therapy, nonsurgical root canal treatment, apexification or regenerative endodontic procedures, periradicular surgery, intentional replantation, or extraction. It is recommended that the invagination be always approached, regardless of the type of dens invaginatus. The root canal should be treated whenever the pulp is irreversibly inflamed or necrotic. Endodontic management of teeth with dens invaginatus is often tricky because of its anatomic complexity, and special and customized strategies should be devised. This review discusses the endodontic implications of this anomaly and the current treatment recommendations based on anatomic, pathological, and technologic considerations.

The use of antimicrobial photodynamic therapy in the successful management of a nonsurgical complex type II Dens Invaginatus.

Because of its complex root canal morphology, dens invaginatus (DI) is a developmental anomaly that represents an endodontic challenge to complete cleaning, shaping, and disinfecting the root canal system. The present case report describes the use of antimicrobial photodynamic therapy as an adjunctive treatment in the successful management of nonsurgical complex type II DI in a left maxillary lateral incisor with thin and fragile dentin walls associated with periradicular lesion.

Combined Endodontic and Surgical Therapy for Resolution of Type III Dens Invaginatus.

Dens invaginatus is an abnormal dental developmental, probably resulting of the invagination of mineralized tissues from the tooth crown surface before its calcification. The teeth that are most affected by this abnormality are the maxillary lateral incisors. This dental developmental anomaly has various types and the rarest is type III which has the worst prognosis, because of its complex anatomy. Conventional root canal therapy may not sufficiently resolve the case itself and in some circumstances the surgical intervention is also necessary. This report addresses a complex combined endodontic treatment of a type III dens invaginatus in a maxillary lateral incisor in an 18 years-old female patient, with an extensive periapical lesion affecting the buccal and palatine cortical bone, diagnosed by cone-beam computed tomography (CBCT). The case was conducted with the combination of endodontic and surgical treatment, under the use of the surgical operating microscope. The association of CBCT, visual magnification, XP-endo Finisher, bioceramic sealer, MTA Repair HP and bone graft were important to ensure predictable success.

Nonsurgical endodontic management of dens invaginatus: a report of two cases.

Dens invaginatus is a malformation affecting mainly the superior lateral incisors. It is defined as an infolding of the crown hard tissues, including the enamel and dentin, and can extend up to the root apex. Root canal treatment of this abnormality is considered difficult due to the complex anatomy presented by these teeth. This case series presents nonsurgical endodontic treatment in two cases of dens invaginatus (type II and III) in maxillary lateral incisors. This nonsurgical or conventional endodontic treatment results in healing of the periapical lesions associated with both cases, with no need for extra intervention e.g. surgical or invasive management. The manual instrumentation associated with sodium hypochlorite and calcium hydroxide were able to completely heal the lesions.  Radiographic exams were carried out to control and asses the healing. Nonsurgical treatment was successful in both cases with adequate repair after a 6-year follow-up with radiographic and tomographic assessments.

Dens in dente Tipo III A: relato de caso / Dens invaginatus type III A: case report

Introdução: dens in dente é uma anomalia rara de desenvolvimento, caracterizada pela invaginação dos tecidos dentários, podendo variar de um ligeiro aumento da fosseta do cíngulo a um profundo sulco, que pode se estender até o ápice dentário. Objetivo: o objetivo do presente artigo foi relatar um caso clínico e descrever as peculiaridades dos achados clínicos e radiográficos de um dens in dente Tipo III A, com ênfase na descrição de sua morfologia completamente atípica, além das dificuldades que foram encontradas no diagnóstico e durante o tratamento endodôntico. Caso clínico: o paciente compareceu ao ambulatório de uma clínica de Endodontia com queixa de dor e leve edema. Ao exame clínico e radiográfico, observou-se imagem sugestiva de dens in dente no elemento #22, sendo, então, proposto tratamento endodôntico convencional, com estudo tomográfico. Resultados: após 1 ano e 6 meses de acompanhamento, o paciente encontrava-se assintomático. Notou-se reparo satisfatório, com formação óssea, apesar da sobre-extensão do cone. Conclusão: foi possível perceber a importância da tomografia computadorizada de feixe cônico como auxiliar no diagnóstico e planejamento da conduta frente a casos de dens in dente, principalmente por aumentar as chances de sucesso, evitando a perda precoce de elementos dentários (AU).

Introduction: Dens invaginatus is a rare dental anomalycharacterized by invagination of dental tissues, which maybe from a slight increase in the pit of the cingulum to a deep groove that may extend to the tooth apex. This report describes clinical and radiographic findings and the morphology of a completely atypical and unique anomaly, and discusses the difficulties in the diagnosis and endodontic treatment of the root canal of teeth with this complex anatomy. Clinical case: Patient seen in the outpatient clinic of the Endodontic Service with a complaint of pain and mild edema. Clinical and radiographic examinations were suggestive of invagination itooth #22, and conservative endodontic treatment and CT scans were indicated. Results: Patient was asymptomatic and had no functional disorders at 18 months of follow-up. Repair and new bone formation were satisfactory, despite cone overextension. Conclusion: Cone-beam CT seems to be an important method of diagnosis and treatment planning in cases of dens invaginatus, especially because it increases the chances of treatment success and prevents the early loss of teeth (AU).

Endodontic Treatment of Complex Dens Invaginatus Teeth with Long Term Follow-Up Periods.

Dens invaginatus is characterized by invagination of enamel and dentin in the dental papilla prior to tissue calcification. This malformation commonly occurs in the maxillary lateral incisors. The present study reports two complex endodontic treatments in Oehlers' type II and III dens invaginatus, with periapical lesion and presence of bone resorption. In the reported cases, conventional endodontic therapy was successful and sufficient enough to eliminate the infectious process, allowing periapical bone neoformation and absence of symptomatology. Dens invaginatus is a relatively easy-to-diagnose dental malformation. However, it is necessary to know its radiographic aspects. The treatment results demonstrated that, although the cases of dens invaginatus of high complexity are challenging, an accurate diagnosis accompanied with proper endodontic treatment can avoid unnecessary surgical intervention and allow great chances of favorable prognosis in long term.

Rare Condition of Dens Invaginatus in a Maxillary Primary Molar and a Birooted Maxillary Primary Canine diagnosed during Routine Examination.

Congenital morphological dental alterations are related to the physiological phase of tooth development. Since the etiology of the dens invaginatus and supernumerary roots has yet to be fully determined, a rare presentation of dens invaginatus in a primary molar and a birooted deciduous maxillary canine were incidentally detected in routine radiographic examinations. Essential clinical considerations and treatment options are presented. CLINICAL SIGNIFICANCE: This study highlights the importance of a deep and comprehensive anamnesis and clinical examination, with radiographs taken when necessary. The negligence of these stages in an initial consultation could cause irreversible future damage to the patient, since rare dental anomalies or other lesions that require treatment may not be detected. HOW TO CITE THIS ARTICLE: Brandão ECB, Ribeiro AAA, Seabra LMA. Rare Condition of Dens Invaginatus in a Maxillary Primary Molar and a Birooted Maxillary Primary Canine diagnosed during Routine Examination. Int J Clin Pediatr Dent 2017;10(2): 193-195.

Nonconventional Therapeutic Protocol for Type III Dens Invaginatus.

INTRODUCTION: This study discusses a nonconventional therapeutic protocol for type III dens invaginatus. This condition is a disorder of dental development, caused by the invagination of enamel into coronal and/or radicular dentin structure. This promotes several structural alterations within the dental organ, which offers challenges and difficulties to perform the endodontic treatment when needed. This article reports a clinical case where a conservative approach was adopted to preserve the invagi-nated tooth, and endodontic treatment was performed in the main necrotic canal. Following 21 years of observation, a complete root formation could be seen, with dental pulp preservation of the pulpotomized tooth. Considering the reported difficulties for the treatment of dens invaginatus, conservative measures, such as pulpotomy to preserve the remaining dental pulp may be an excellent alternative to allow less invasive procedures, thus avoiding endodontic surgery. This study discusses a nonconventional therapeutic protocol for type III dens invaginatus. A conservative approach adopted preserved the invaginated tooth, and root canal treatment was performed in the main necrotic canal. Following 21 years of observation, there was complete root formation, with dental pulp preservation of the pulpotomized tooth.

Treatment of extensive cystic lesion in the maxilla associated with dens in dente / Tratamento de lesão cística extensa em maxila associada a dens in dente

Dens in dente is a dental development malformation that involves more commonly the upper lateral incisors. Infection of the canal of these teeth can cause the formation of chronic periapical lesions. The present study aimed to describe an integrated approach between the endodontic therapy and surgical intervention in an upper lateral incisor with dens in dente type II. A female patient, 14 years old, sought for dental care complaining of left palatal and paranasal bulging. Clinical, radiological and histopathological findings suggested periradicular cyst. First, marsupialization was performed to reduce the size of the lesion and to favor its enucleation, with less risk of injuring the tooth and vital structures. After diagnosis of pulp necrosis and in attempt to reduce the infection via canal, we used the reciprocating instrumentation associated with irrigation with sodium hypochlorite, intracanal medication based on calcium hydroxide and filled with a thermoplastic filling. After a year of marsupialization, fistulectomy and complete enucleation of the lesion were performed. Proservation was performed 1, 3, 6 and 12 months following marsupialization. Six months after enucleation, we observed the periradicular repair and remission of symptoms. The extensive apical lesion associated with dens in dente type II can be treated with a combination of surgical and endodontic therapy.

Dens in dente é uma malformação no desenvolvimento dentário que envolve mais comumente os incisivos laterais superiores. A infecção do canal destes dentes podem causar a formação de lesões periapicais crônicas. O objetivo deste trabalho é descrever uma abordagem integrada entre a terapia endodôntica e a intervenção cirúrgica em um incisivo lateral superior com dens in dente tipo II. Paciente de 14 anos, gênero feminino, procurou atendimento odontológico com queixa de abaulamento em região palatina e paranasal esquerda. Os achados clínico, radiográfico e histopatológico sugeriram cisto perirradicular. Marsupialização foi realizada inicialmente para reduzir o tamanho da lesão, favorecer a enucleação da mesma, com menor risco de injuriar o dente e as estruturas vitais. Diagnosticado necrose pulpar e na tentativa de combater a infecção via canal, empregou-se a instrumentação reciprocante associada a irrigação com hipoclorito de sódio, medicação intracanal a base de hidróxido de cálcio e finalizou-se com uma obturação termoplastificada. Após um ano do procedimento de marsupialização realizou-se a fistulectomia e a completa enucleação da lesão. A proservação foi realizada 1, 3, 6 e 12 meses posteriormente a marsupialização. Seis meses após a enucleação observou-se a reparação perirradicular e remissão dos sintomas. A extensa lesão perirradicular associada ao dens in dente tipo II pode ser solucionada com uma combinação entre a intervenção cirúrgica e endodôntica.

18-year follow-up of dens invaginatus: retrograde endodontic treatment.

INTRODUCTION: Dens invaginatus is a rare developmental anomaly that occurs during odontogenesis, with a higher prevalence in the Caucasian race and no significant sex predilection; it can be bilateral. This anomaly occurs in approximately 1.26% of the teeth, and the maxillary lateral incisor is most often affected. METHODS: This case report describes a female patient with dens invaginatus in the maxillary right conoid lateral incisor. The patient presented to Araçatuba School of Dentistry, Universidade Estadual Paulista, São Paulo, Brazil, in 1995 with an acute periapical abscess in the palatal region of the tooth in question. After access preparation, the pulp in the main root canal was found to be vital and not associated with the abscess; therefore, surgical drainage of the abscess and root canal treatment of the main canal were performed. Surgical complementation was also performed to eliminate the infectious focus, which involved retrograde endodontic treatment of the dens invaginatus being obturated with Sealapex (Sybron Dental Specialties, Glendora, CA) and Ultrafil (Coltène/Whaledent AG, Altstätten, Switzerland). Radiographic assessments were completed periodically to verify healing. After 18 years, the patient returned to Araçatuba School of Dentistry, presenting crown fracture of the tooth in question. RESULTS: Radiographic examination showed repair and favorable conditions for tooth maintenance, so a post and porcelain core were made. CONCLUSIONS: The treatment was successful, achieving adequate repair with 18 years of follow-up.

Management of Type III Dens Invaginatus in a Mandibular Premolar: A Case Report

Dens invaginatus is a well-known malformation of teeth, which probably results from an invagination of enamel organ into dental papilla during tooth development. The endodontic treatment of invaginated teeth may be challenging due to difficulties in accessing the root canals and also due to complex variations of internal morphology. This article presents the endodontic management and follow-up in a rare case of right mandibular second premolar with Oehlers' type III dens invaginatus. The result of cold pulp testing was positive for this tooth but it was associated to a sinus tract and periapical lesion. Herein, it is described the root canal therapy of this tooth combined with periapical surgery, emphasizing the importance of proper diagnosis and planning by using cone beam computed tomography (CBCT). This case report presents the proper periapical healing 6 months after the combination of nonsurgical and surgical treatments. It also shows that CBCT is an important auxiliary examination to avoid errors in diagnosis and subsequent treatment of dental anomalies.

Dens invaginatus é uma malformação dentária já bem reconhecida, que provavelmente resulta de uma invaginação do órgão do esmalte para dentro da papila dentária durante o desenvolvimento do dente em questão. O tratamento endodôntico de dentes invaginados pode ser um desafio devido às dificuldades de acesso aos canais radiculares e também devido à complexidade da morfologia interna. Este artigo apresenta o manejo endodôntico e o acompanhamento de um caso raro de segundo pré-molar inferior direito com dens invaginatus Tipo III de Oehlers. O resultado do teste de sensibilidade pulpar ao frio foi positivo para este dente, mas o mesmo estava associado a uma fístula e lesão periapical. Relata-se o tratamento de canal deste dente associado à cirurgia periapical, enfatizando a importância de um correto diagnóstico e plano de tratamento, utilizando a tomografia computadorizada de feixe cônico (TCFC). Este relato de caso mostra reparo periapical adequado 6 meses após a combinação dos tratamentos não-cirúrgico e cirúrgico. Mostra também que a TCFC é um importante exame auxiliar para evitar erros no diagnóstico e posterior tratamento de anomalias dentárias.

The treatment of a maxillary lateral incisor with unusual morphology with long-term follow-up.

AIM: To report the treatment of an unusual combination of one dens evaginatus and two dens invaginatus in a single tooth and its healing outcome after 10 years. SUMMARY: The long-term outcome of a maxillary lateral incisor with dens evaginatus combined with two Oehlers type II dens invaginatus and a large periradicular lesion in an 11-year-old female treated endodontically and restoratively is described. The endodontic treatment included intracanal medication with calcium hydroxide and canal filling using a thermoplastic root canal filling technique. The crown was restored with conventional composite resin. During periodic clinical and radiographic follow-up, the patient remained symptom free, and the periradicular region was completely healed, meeting both aesthetic and functional expectations after 10 years. KEY LEARNING POINTS: The co-occurrence of dens evaginatus and two dens invaginatus in the same tooth is an unusual finding that compromises aesthetics and predisposes the patient to dental pulp infection. The complex morphology observed in this case represented both endodontic and restorative challenges.

Tratamento conservador de incisivos superiores em forma de pá e dens invaginatus: um estudo de caso / Conservative treatment of shovel-shaped upper incisors and dens invaginatus: a case study

The purpose of this paper was to describe the conservative treatment adopted in one nonsyndromic patient presenting with shovel-shaped upper incisors and dens invaginatus. A 13-yearold female patient sought treatment reporting pain in response to cold stimuli in the upper anterior teeth. Four upper incisors with shovel-shaped anatomical alterations in the palatal side of the crown were detected during intra-oral clinical examination; in addition, imaging exams revealed a type I dens invaginatus in tooth 22. There was no communication between the carious lesion and the pulp chamber, and a restorative treatment plan was developed. After 2 years of follow-up, the patient showed absence of pain, fistulas, swelling, or periodontal pockets. When faced with anomalous teeth, conservative procedures should be considered as a potential solution for restorative and endodontic treatment.

O objetivo desse trabalho foi descrever o tratamento conservador adotado em um paciente não sindrômico apresentando incisivos em forma de pá (shovel-shaped) e dens invaginatus. Paciente de 13 anos de idade, do sexo feminino, procurou tratamento com queixa de dor em resposta a estímulos frios nos dentes superiores anteriores. Quatro incisivos superiores com alterações anatômicas em forma de pá na face palatal da coroa foram detectados durante o exame clínico intraoral; além disso, exames de imagens revelaram a presença de dens invaginatus tipo I no dente 22. Não havia comunicação entre a cárie e a câmara pulpar, e um plano de tratamento restaurador foi desenvolvido. Após 2 anos de seguimento, a paciente demonstrava ausência de dor, fístulas, edema ou bolsas periodontais. Ao se deparar com anomalias dentárias, procedimentos conservadores devem ser considerados como uma potencial solução de tratamento restaurador e endodôntico.

Tratamento endodôntico convencional de dente invaginado com periodontite apical / Conventional endodontic treatment of a dens invaginatus with apical periodontitis

Dente invaginado é uma anomalia do desenvolvimento caracterizada por invaginação dos tecidos dentários que varia de ligeiro aumento da fosseta do cíngulo a um profundo sulco que pode se estender até o ápice dentário. O objetivo deste trabalho foi discutir um caso clínico de dente invaginado tipo II em incisivo lateral superior em que foi realizado o tratamento endodôntico convencional. Posterior ao acompanhamento de 11 anos e frente aos exames clínicos e imaginológicos observou-se tratamento endodôntico satisfatório e regressão da rarefação óssea. Baseado nisso, foi possível concluir que o tratamento endodôntico convencional é uma alternativa viável para tratamento de dente invaginado tipo II.

Dens invaginatus is a developmental anomaly characterized by invagination of the dental tissues ranging from slight rise of the pit to a depth of the cingulate sulcus and can be extended to the apical portion of the tooth. The aim of this study was to relate a case of dens invaginatus type II in upper lateral incisor in which a conventional treatment was realized. After eleven years-follow up and based on clinical and images exams, it was observed that the endodontic treatment was efficient and the bone rarefaction reduced. Based on this, it was possible to conclude that conventional endodontic treatment is a viable alternative for type II dens invaginatus.

Tratamiento de conductos de un densinvaginatus: reporte de un caso / Root Canal Therapy of a Dens Invaginatus: A Case Report

El diente invaginado es una malformación que resulta probablemente de un desdoblamientode la papila dental durante el desarrollo dentario. Los dens invaginatus son dientes clínicamentesignificativos, debido a la gran facilidad de afección de la pulpa. La profundidaddel defecto estructural varía de una leve ampliación del cíngulo a una invaginación quese extiende al ápice. El presente artículo relata el caso de una mujer de veintitrés años deedad, quien refiere una fístula de diez años de evolución en la mucosa en el fondo de sacoa la altura del diente lateral superior izquierdo (diente 22). Luego de la exploración clínica yradiográfica se diagnostica un dens in dente unilateral con necrosis pulpar y absceso apicalcrónico, para lo cual se realizó terapia de conductos y cirugía apical con éxito radiográficode dos años de evolución...

Invaginated tooth is a malformation likely resulting from a splitting of dental papilla duringtooth development. Dens invaginatus are clinically important teeth due to the easy affectionof the dental pulp. Invagination depth varies from a slight enlargement of the cingulum untoan extended invagination to the apex. This article reports the case of a female patient aged23, who referred fistula with ten years of evolution in tooth 22. The clinical and radiographicdiagnosis was dens in dent with necrosis and chronic suppurative periapical periodontitis.The root canal therapy and apical surgery were performed showing successfully radiographicevolution within a two-year follow-up period...

Permanent mandibular incisor with multiple anomalies - report of a rare clinical case

Permanent mandibular central incisor is rarely affected by tooth shape anomalies of crown and root. Co-occurrence of multiple anomalies in a permanent mandibular central incisor is extremely rare. This paper reports an unusual concurrent combination of multiple dental anomalies affecting both the crown and root of a permanent mandibular left central incisor - talon cusp, dens invaginatus, short root anomaly and macrodontia -, which has not previously been reported together. Case management is described and implications are discussed. The dentist should be aware of these rare entities in order to provide an accurate diagnosis and management for which detailed examination of the tooth both clinically and radiographically is very important.

O incisivo central inferior permanente raramente é afetado por anomalias de forma envolvendo a coroa e a raiz. A co-ocorrência de múltiplas anomalias em um incisivo central inferior permanente é extremamente rara. Este artigo relata uma combinação concomitante incomum de múltiplas anomalias dentais afetando tanto a coroa quanto a raiz de um incisivo central inferior permanente - cúspide em garra (talon cusp), dens invaginatus, anomalia de raiz curta e macrodontia - que ainda não havia sido descrita na literatura. A condução do caso é descrita e suas implicações são discutidas. É importante que o dentista esteja familiarizado com essas entidades raras a fim de proporcionar diagnóstico e tratamento precisos, para os quais exames clínicos e radiográficos detalhados são extremamente importantes.

Concommitant occurance of dens invaginatus and talon cusp: A case report / Ocorrência simultânea de dens invaginatus e cúspide talon: relato de caso

PURPOSE: Morphological dental anomalies of the maxillary lateral incisors are relatively common. However, their simultaneous occurrence is a relatively rare event. We report a case of dens invaginatus and talon cusp concurrently affecting maxillary lateral incisors. The etiology, pathophysiology, association with other dental anomalies, as well as various treatment modalities of these anomalies are discussed. CASE DESCRIPTION: An 18-year-old male patient reported with a complaint of crowding of maxillary front teeth. On intraoral examination, permanent dentition with Class I malocclusion with anterior crowding was observed. Tooth 12 showed a radiopaque invagination from a lingual pit but confined to the crown of the tooth. This invagination was approximately circular with a central core of radiolucency, which was consistent with the diagnosis of a dens invaginatus type I. Tooth 22 showed the talon cusp as a typical inverted cone with enamel and dentine layers and a pulp horn extending only into the base of the cusp. Talon cusp was treated by prophylactic enameloplasty to avoid plaque accumulation, the deep lingual pit was sealed using composite resin and regular clinical and radiographic follow-up was advised. Patient was scheduled for orthodontic treatment to correct crowding of maxillary anterior teeth. CONCLUSION: We emphasize the fact that detailed clinical and radiographic examination of the maxillary lateral incisors is vital in avoiding complications.

OBJETIVO: Anomalias morfológicas dentárias dos incisivos laterais superiores são relativamente comuns. No entanto, a sua ocorrência simultânea é um evento relativamente raro. Relatamos um caso de dens invaginatus e cúspide talon simultaneamente afetando incisivos laterais superiores. A etiologia, fisiopatologia, associação com outras anomalias dentárias, bem como várias modalidades de tratamento destas anomalias são discutidas. DESCRIÇÃO DO CASO: Um paciente de 18 anos, sexo masculino, relatou com queixa de apinhamento dos dentes anteriores superiores. Ao exame intraoral observou-se dentição permanente com má oclusão Classe I com apinhamento anterior. O dente 12 mostrou uma invaginação radiopaca lingual, confinada à coroa do dente. Esta invaginação era aproximadamente circular, com um núcleo central de radioluscência, que foi compatível com o diagnóstico de dens invaginatus tipo I. O dente 22 apresentou uma cúspide talon como um cone invertido típico com esmalte e dentina em camadas. A cúspide talon foi tratada por ameloplastia profilática para evitar acúmulo de placa, a fissura lingual foi selada com resina composta e foram aconselhados controles clínicos e radiográficos. O paciente foi encaminhado para tratamento ortodôntico para corrigir o apinhamento dos dentes anteriores superiores. CONCLUSÃO: Enfatizamos o fato de que o exame clínico e radiográfico detalhado dos incisivos laterais superiores é vital para evitar complicações.

Manejo endodóntico conservador de un caso de Dens Invaginatus tipo III con vitalidad y lesión periapical / Conservative endodontic treatment of a dens invaginatus type III case with vitality and periapical lesion

En una paciente de sexo femenino de 22 años de edad, se presenta un caso exitoso con tratamiento endodóntico no quirúrgico de un Dens Invaginatus tipo III clasificación de Oehlers en un incisivo lateral superior izquierdo, diagnosticado durante examen radiográfico rutinario de control ortodóntico. Paciente asintomática, presentaba clínicamente en el 22 color y traslucidez normal. Había defecto anatómico en la corona por palatino; en la radiografía periapical se observó forma irregular de la raíz, la cual presentaba tres conductos, lesión radiolúcida periapical y ápice abierto. Al realizar las pruebas de vitalidad pulpar, hubo respuesta positiva. Se diagnosticó Dens Invaginatus tipo III con pulpa sana y periodontitis apical crónica no supurativa. Se realizó apexificación del conducto palatino; colocando hidróxido de calcio como medicación temporal y durante siete meses. Hubo disminución de la lesión y formación de cierre apical; se realizó obturación definitiva con técnica de condensación lateral; en los controles al año y dos años se encontró reparación total, restablecimiento del espacio del ligamento periodontal y mantenimiento del color, traslucidez y conservación de la vitalidad. A pesar del mal pronóstico de los dientes con Dens Invaginatus tipo III, debido a su compleja anatomía interna y a la dificultad de lograr los principios endodónticos de limpieza, conformación y obturación, en este inusual caso fue posible lograr un tratamiento exitoso; el tratamiento endodóntico convencional fue la primera elección.

A case of a 22 years-old female patient with a successful non-surgical endodontic treatment of a Dens Invaginatus type III (classification of Oehlers) in a maxillary left lateral incisor is presented. This case was diagnosed during a routine radiographic examination for orthodontic control. The patient was asymptomatic and clinically the tooth presented a crown with normal and translucent color. In addition to the palatal anatomical defect, the periapical radiographs showed three canals, extensive periapical radiollucency lesion, open apex and the tooth responded positively to the vitality tests. Consequently, Dens Invaginatus type III associated to normal pulp and nonsupurative chronic apical periodontitis was diagnosed. Apexification was the treatment of choice but only for the palatal canal using calcium hydroxide as temporary medication for seven months. After reduction of the periapical lesion and closing of the open apex the canal was obturated using lateral condensation technique. After two years of follow-ups a complete repair and reestablishment of the periodontal ligament space and maintenance of the color, translucency and vitality was observed. In spite of poor prognosis for the teeth with unusual Dens Invaginatus type III; due to its complex internal anatomy and the difficulties to obtain excellent cleaning, conformation and obturation, we demonstrated successful results. The conventional endodontic treatment should be the first election for these cases.