Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2022 Dec 9;22(1):583.
doi: 10.1186/s12903-022-02616-1.

The incidence of radicular groove on maxillary lateral incisors of Saudi population: CBCT evaluation

Sarah M Alkahtany  1 , Fatemah Alrwais  2 , Asma Altamimi  3 , Sundus M Bukhary  2 , Amani Mirdad  4
Affiliations

The incidence of radicular groove on maxillary lateral incisors of Saudi population: CBCT evaluation

Sarah M Alkahtany et al. BMC Oral Health. .

Abstract

Background: The radicular groove (RG) is one of the developmental anomalies that is commonly found in maxillary incisors. The formation of radicular groove is initiated around the cingulum and can reach the root at different levels. The incidence of radicular grooves was reported in different countries but there was no published data about the incidence of RG in Saudi Arabia. Therefore, this study aimed to evaluate the incidence of radicular grooves on maxillary lateral incisors in the Saudi population using cone-beam computed tomography (CBCT).

Methods: The dental records of 490 patients (N = 490) with CBCT images of maxillary anterior teeth were screened for inclusion criteria. Then 264 included cases were evaluated independently by two Endodontists. The evaluation was performed on CBCT images in the axial, sagittal, and coronal sections using Planmeca Romexis® software. The following data were recorded for each patient: Patients' age and gender, radicular groove presence or absence, and if it is bilateral or unilateral. The type of radicular groove was recorded according to Gu's classification (type I, II, or III).

Results: The incidence rate of radicular grooves in maxillary lateral incisors was 4.9%. RG was found to be unilateral in 61.5% and bilateral in 38.5%. The majority of RG were classified as type I in 69.2%, followed by type II in 15.4%, and type III was found in 15.4%.

Conclusion: 4.9% of the Saudi population has RG in the upper lateral incisor. This anatomical variation is mostly present as type I on one side only (unilateral).

Keywords: Dental anomaly; Endodontics; Palatal groove; Radicular groove.

PubMed Disclaimer

Conflict of interest statement

The authors have no relevant financial or non-financial interests to disclose.

Figures

Fig. 1
Fig. 1
Illustration of Gu’s Classification based on the severity. Type I: short groove (not beyond the coronal third of the root). Type II: long and shallow groove (beyond the coronal third of the root). Type III: long and deep groove (beyond the coronal third of the root), associated with complex root canal system
Fig. 2
Fig. 2
Incidence of radicular grooves on maxillary lateral incisors in 264 patients
Fig. 3
Fig. 3
The location of RG in 13 patients
Fig. 4
Fig. 4
Type I bilateral RG: shallow RG can be seen on right and left sides at different levels
Fig. 5
Fig. 5
Type I unilateral: shallow RG on the right side only
Fig. 6
Fig. 6
Type II unilateral: right side
Fig. 7
Fig. 7
Type III unilateral: deep groove on the right side. (severe form)
See this image and copyright information in PMC

References

    1. Black GV. Operative dentistry: pathology of the hard tissues of teeth. 7. Chicago: Medico-Dental Publishing Company; 1936.
    1. Arslan H, Ertas ET, Topçuoğlu HS, Şekerci AE, Atici MY, Ertas H, et al. Radicular grooves of maxillary anterior teeth in a Turkish population: a cone-beam computed tomographic study. Arch Oral Biol. 2014;59:297–301. doi: 10.1016/j.archoralbio.2013.12.004. - DOI - PubMed
    1. Kogon SL. The prevalence, location, and conformation of palato-radicular grooves in maxillary incisors. J Periodontol. 1986;57:231–234. doi: 10.1902/jop.1986.57.4.231. - DOI - PubMed
    1. Lee KW, Lee EC, Poon KY. Palato-gingival grooves in maxillary incisors. A possible predisposing factor to localized periodontal disease. Br Dent J. 1968;124:14–18. - PubMed
    1. Simon JHS, Glick DH, Frank AL. Predictable endodontic and periodontic failures as a result of radicular anomalies. Oral Surg. 1971;31:823–826. doi: 10.1016/0030-4220(71)90139-3. - DOI - PubMed

LinkOut - more resources