Prevalence, classification and dental treatment requirements of dens invaginatus by cone-beam computed tomography

Abstract

Background This study aimed the evaluation of the prevalence, characteristics, types of dens invaginatus (DI) and co-observed dental anomalies to understand dental treatment requirements in anterior teeth that are susceptible to developmental anomalies by using cone-beam computed tomography (CBCT). Methods In this retrospective study, the anterior teeth of 958 patients were evaluated by using CBCT for the presence of DI. The demographic features, types of DI and treatment requirements were also recorded. The association between sex and the presence of DI was evaluated using chi-squared test. Results Seventy-three DI anomalies were detected in the anterior teeth of 49 patients (18 females, 31 males). The frequency of DI was 5.11% and the most frequently involved teeth were lateral (57.53%). Forty-six teeth were classified as Type I (63.01%), 24 as Type II (32.87%), and three as Type III (4.10%). Apical pathosis was found to be 20.54% in all DIs detected and accounted for all Type III and one-third of Type II. Conclusions CBCT imaging can be effective in the detection of dental anomalies such as DI and planning for root canal therapy and surgical treatments. Prophylactic interventions might be possible to prevent apical pathosis with the data obtained from CBCT images.

Endodontic management of type IIIb dens invaginatus in central incisor: A case report

“…7 Management approaches vary for different types of DI, including restorative management, non-surgical root canal therapy, surgical treatment, intentional replacement, or extraction. 8 This case report presents the management of type IIIb DI in the maxillary central incisor, along with impacted supernumerary tooth.…”

Non-surgical endodontic management of type IIIB dens invaginatus in central incisor with two root canals: A case report

“…DI is a developmental anomaly with the most prevalence of affected maxillary lateral incisors. 8 Although, affected canines, premolars, molars and maxillary central incisors have also been reported. 8 This malformation is classified into 3 groups 6 and type III is more complicated compared to the others.…”

“…8 Although, affected canines, premolars, molars and maxillary central incisors have also been reported. 8 This malformation is classified into 3 groups 6 and type III is more complicated compared to the others. 9 A different treatment plan would be useful for each type of dens invagination.…”

“…10 Moreover, for nonsurgical endodontic treatment of DI, the preferred approach is using MTA plug at the apical end and root canal obturation using lateral condensation or warm gutta-percha techniques. 8 Various obturation materials including Biodentine, MTA and guttapercha using different sealers have been suggested, though. 2 In the present case, scrolling the axial view of the tooth in CBCT revealed that the space between two roots had no connection to the canals.…”

“…7 Several approaches for clinical management of different types of DI including restorative management, non-surgical root canal therapy, surgical treatment, intentional replacement or extraction have been described. 8 In this case report, we described a non-surgical management of type IIIb DI occurred in maxillary central incisor with two root canals view in 2-dimensional radiography simultaneously with impacted supernumerary tooth.…”