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. 2022 Nov;34(7):611-616.
doi: 10.1016/j.sdentj.2022.07.004. Epub 2022 Jul 29.

Three-dimensional evaluation of root canal morphology of maxillary first premolars: Micro-computed tomographic study

Mohammad Ahmad Alenezi  1 , Saad Abdulaziz Al-Nazhan  2 , Mohammad Ahmad Al-Omari  2
Affiliations

Three-dimensional evaluation of root canal morphology of maxillary first premolars: Micro-computed tomographic study

Mohammad Ahmad Alenezi et al. Saudi Dent J. 2022 Nov.

Abstract

Aim: The aim of this in vitro study was to investigate the root and root canal morphology of maxillary first premolar teeth in a Kuwaiti population using micro-computed tomography (μ- CT).

Materials and methods: A total of 100 maxillary first premolars were scanned in a micro- computed tomographic device. The external anatomy (number of roots, distance from cementoenamel junction to apex, and presence of a palatal groove) and internal anatomy (number of canals and presence of apical deltas, lateral canals, and isthmi) of teeth were analyzed using descriptive analysis.

Results: The number of roots was one root (57 %), two roots (41 %), and three roots (2 %). The longest and shortest roots measured 17.7 and 11.2 mm, respectively. The palatal groove was present in 63.4 % of the teeth. According to Vertucci's classification, type IV configuration was the most prevalent (53 %), followed by type II. A new root canal configuration type (1-2-1-2-1) was detected. Apical deltas, lateral canals, and isthmi were present in 33 %, 48 %, and 21 % of teeth, respectively.

Conclusion: Type IV canal configuration was the most common root canal configuration. A new root canal configuration type IX for (1-2-1-2-1) was proposed for Kuwaiti population. The μ-CT device could to be a better diagnostic tool for understanding the anatomy of the root canal system.

Keywords: External morphology; Furcation groove; Maxillary first premolars; Micro–computed tomography; Root canal configuration.

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Conflict of interest statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Figures

Fig. 1
Fig. 1
External root morphology of maxillary first premolars. (A) Single root. (B) Two roots. (C) Three-separated roots (2 buccals).
Fig. 2
Fig. 2
Internal root canal configurations of maxillary first premolar teeth according to Vertucci’s classification. (A) Type I. (B) Type II. (C) Type III. (D) Two separated roots.
Fig. 3
Fig. 3
Lateral canals (LC), apical deltas (AD) and isthmi in maxillary first premolars. (A) single root with isthmus and LC at apical third of the root. (B) Bifid root with AD and.
See this image and copyright information in PMC

References

    1. Abella F., Teixidó L.M., Patel S., Sosa F., Duran-Sindreu F., Roig M. Cone-beam computed tomography analysis of the root canal morphology of maxillary first and second premolars in a Spanish population. J. Endod. 2015;41:1241–1247. - PubMed
    1. Ahmad I.A., Alenezi M.A. Root and root canal morphology of maxillary first premolars: a literature review and clinical considerations. J. Endod. 2016;42:861–872. - PubMed
    1. Al-Nazhan S., Al-Daafas A., AL-Maflehi N. Radiographic investigation of in vivo endodontically treated maxillary premolars in a Saudi Arabian sub-population. Saudi Endod. J. 2012;2:1.
    1. Awawdeh L., Abdullah H., Al-Qudah A. Root form and canal morphology of Jordanian maxillary first premolars. J. Endod. 2008;34:956–961. - PubMed
    1. Çalişkan M.K., Pehlivan Y., Sepetçioğlu F., Türkün M., Tuncer S.Ş. Root canal morphology of human permanent teeth in a Turkish population. J. Endod. 1995;21:200–204. - PubMed

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