Assessment of dens invaginatus and its characteristics in maxillary anterior teeth using cone-beam computed tomography

Abstract

This cone-beam computed tomographic (CBCT) study aimed to evaluate the prevalence of dens invaginatus (DI) and its characteristics in maxillary anterior teeth in a Saudi population. A total of 505 CBCT scans were evaluated, including a total of 2790 maxillary anterior teeth. The patients’ demographic data, including age and sex, were recorded. The presence of DI and the related characteristics including bilateral occurrence; DI type according to Oehlers classification; and presence of periapical radiolucency, open apex, and/or nearby impacted teeth were analyzed. The associations between DI and the other factors were analyzed using the chi-square and fisher exact tests. DI was detected in 7.3% of the patients and 1.6% of the teeth examined. Most of the DI-affected teeth were maxillary lateral incisors (76.1%), followed by mesiodens (19.6%) and maxillary central incisors (4.3%), while no DI was observed in the maxillary canines. Bilateral DI was found in 24.3% of the affected patients. Oehlers type I DI was the most frequent (80%). Periapical radiolucencies, open apices, and nearby impacted teeth were observed in 10.9%, 4.3%, and 30% of the invaginated teeth, respectively. DI was significantly associated with tooth type (P < 0.0001) but not with sex (P > 0.05). Although most of the DI cases are limited to the crown, CBCT imaging is essential for DI evaluation and management.

Nonsurgical management of type II dens invaginatus with cone beam computed tomography: a rare case

“…Dens invaginatus may occur in more than two teeth or bilaterally. 4 However, in the present case, the anomaly was unilateral.…”

“…It is generally rare to find in the mandible. 4 Multiple occurrences of dens invaginatus cases have been reported in the literature; besides that, it may be present along with other malformations containing microdontia, taurodontism, dentinogenesis imperfecta, and gemination. 5 The aetiology of dens invaginatus is not clear; Hülsmann reported many hypotheses that have been discoursed to describe the phases of coronal invagination: central failure of development of the inner enamel epithelium, malformation of the enamel, growth compulsion of the dental arch, accelerated and destructive multiplication of the inner enamel epithelium, the fusion of two tooth germs, infection, and trauma.…”

Morphological Diversity of Permanent Maxillary Lateral Incisors and Their Impact on Aesthetics and Function in Orthodontically Treated Patients

“…Some previous studies reported the prevalence of dens invaginatus of 0.04–10% and more common in male [ 4 , 31 ] and PMLI are the most commonly affected teeth with dens invaginatus [ 37 ]. In the present study the prevalence of dens invaginatus was 0.84%, what is in agreement with study by Hamasha and Alomari [ 37 ] but much lower that prevalence reported by Alkadi et al [ 38 ] who reported 3.81% prevalence of dens invaginatus in PMLI. The difference may also be the result of different detection, since Alkadi et al [ 38 ] used cone-beam computed tomography (CBCT) for detection dens invaginatus which is more accurate than panoramic radiograph used in present study.…”

“…In the present study the prevalence of dens invaginatus was 0.84%, what is in agreement with study by Hamasha and Alomari [ 37 ] but much lower that prevalence reported by Alkadi et al [ 38 ] who reported 3.81% prevalence of dens invaginatus in PMLI. The difference may also be the result of different detection, since Alkadi et al [ 38 ] used cone-beam computed tomography (CBCT) for detection dens invaginatus which is more accurate than panoramic radiograph used in present study. In the present study, dens invaginatus were in all samples found unilaterally, while Hamasha and Alomari [ 37 ] and Alkadi et al [ 38 ] observed 30.1% and 24% dens invaginatus bilaterally, respectively.…”

Management of type IIIb dens invaginatus using a combination of root canal treatment, intentional replantation, and surgical therapy: A case report

“…Dens invaginatus (DI) is a dental developmental anomaly resulting from enamel enfolding into the dental papilla prior to calcification. DI occurs more often in permanent maxillary lateral incisors and less frequently in mandibular anterior and deciduous teeth[ 1 ]. Clinically, pits lined with enamel defects and dentin invaginated into the dental/teeth with DI are susceptible to caries due to microorganism accumulation, easily leading to pulp necrosis and periapical inflammation[ 2 ].…”