Endodontic Therapy of a Mandibular Canine Tooth with Irreversible Pulpitis Secondary to Dentigerous Cyst

Abstract

Dentigerous cysts are uncommon, yet are being reported with increasing frequency in the veterinary literature. Dentigerous cysts are a type of benign odontogenic cyst associated with impacted teeth, most commonly the mandibular first premolar tooth. Significant bone destruction can occur secondary to the expansion of a dentigerous cyst. The expanding cyst can lead to pathology of neighboring teeth, which can include external root resorption or pulpitis. Intraoral dental radiographs are imperative to properly assess the presence and extent of a dentigerous cyst, as well as the status of the neighboring teeth. This case report describes treatment for dentigerous cyst including cyst lining curettage, mandibular bone regeneration, and endodontic therapy for a canine tooth with irreversible pulpitis.

A Clinical, Radiographic and Histological Study of Unerupted Teeth in Dogs and Cats: 73 Cases (2001–2018)

“…In the present study the mandibular first premolar tooth was not only the most commonly diagnosed unerupted tooth (85 of 108 unerupted teeth), but was also most commonly associated with cyst development (41 of 48 dentigerous cysts). This is also in agreement with the data extrapolated from the literature, with cysts described in association with 49 out of 71 (69%) reported unerupted first premolar teeth (13, 14, 20, 29, 50, 54, 57, 58, 60, 70). Interestingly, six of eight unerupted canine teeth in the present study were associated with a cystic lesion, one with a neoplastic lesion, and one showed a radiographically equivocal pericoronal appearance.…”

“…The development of dentigerous cysts is commonly associated with unerupted teeth in humans and animals (68, 69). Several veterinary case reports (21, 25, 28–30, 32–34, 37, 42, 50, 52–54, 57, 60, 70) and a few retrospective studies (13, 14, 20) describe dentigerous cysts associated with unerupted teeth in dogs. Cysts may develop by accumulation of fluid between the REE and enamel, or between the layers of enamel epithelium itself, but the exact pathogenetic mechanism remains unclear (71).…”

Persistência De Dentes Decíduos E Presença De Dentes Inclusos E Cisto Dentígero Em Um Cão Shih-Tzu Adulto

“…O cisto dentígero é o cisto odontogênico benigno mais comum em cães. Todavia, sua incidência é baixa, e está associado a dentes inclusos, ocorrendo principalmente no primeiro pré-molar mandibular de cães braquicefálicos e de pequeno porte (BELLEZZA et al, 2008;KUYAMA et al, 2009;D`ASTOUS, 2011;MACGEE et al, 2012;HONZELKA et al, 2014;MACGEE, 2014;VOELTER-RATSON et al, 2015;REQUICHA et al, 2015;BABBITT et al, 2016;HOLLY et al, 2018;HOYER et al, 2016;PERRY, 2017).…”

“…Os cistos dentígeros podem alcançar tamanhos significativos durante sua lenta expansão, levando a fraturas patológicas decorrentes de destruição óssea, invasão da cavidade nasal, reabsorção ou problemas endodônticos em dentes vizinhos, e podem em alguns casos se tornar malignos (D`ASTOUS, 2011;MACGEE et al, 2012;MACGEE, 2014;MOORE;NIEMIEC, 2014;VOELTER-RATSON et al, 2015;NIEMIEC, 2015;BABBITT et al, 2016;PERRY, 2017;THEYSE, 2017).…”

“…Para o diagnóstico dos cistos dentígeros é essencial a realização de radiografias intra-orais, que permitem observar uma lesão circular radioluscente com um córtex bem definido. Além disso, recomenda-se realizar exame histolopatológico do material extraído (KUYAMA et al, 2009;D`ASTOUS, 2011;MACGEE et al, 2012;HONZELKA et al, 2014;MACGEE, 2014). Por outro lado, grandes cistos dentígeros podem ser confundidos com granulomas, abscessos, lesões fibro-ósseas, tumores e outros tipos de cistos (KUYAMA et al, 2009;D`ASTOUS, 2011;HONZELKA et al, 2014).…”