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Stomatologija 2026; 28 (2): 47-52 64 KB

Relation of gubernacular canal and permanent dentition by Nolla stage: Cone-beam computed tomography analysis

Ana Luisa Marques Bemquerer¹, Larissa Marques Bemquerer², Lucas Guimarães Abreu³, Cláudia Borges Brasileiro²

Summary

Background. The aim of the study was to evaluate an association between the stages of permanent dentition development, based on Nolla stages, and the characteristics of the gubernacular canal (GC), and to investigate the correlation between eruption process failures and the GC.

Material and methods. This observational, cross-sectional, and retrospective study analyzed tomographic scans from 164 patients, encompassing 244 included teeth. The teeth were categorized into ten and three stages according to Nolla stages and were evaluated the position of the GC relative to the dental follicle, the alignment of the GC relative to the tooth and the direction of the GC relative to the bone cortices. The teeth were also classifi ed as: normal impacted, normal non-impacted, delayed impacted, and delayed non-impacted.

Results. Of the total sample, 162 exhibited GC (71.1%). Statistical signifi cance was noted when exploring the association between Nolla stage, categorized into ten and three stages, and the position of GC in relation to the follicle (p=0.023 and p=0.005, respectively). Furthermore, an association was identifi ed between teeth with delayed (Nolla stage equal to or greater than 8) and impacted eruption and the position of GC in relation to the follicle (p=0.004) showing a shifting of the canal's position as the root develops, from the occlusal position to other positions.

Conclusions. The fi ndings of this study suggest that displacement of the GC from its typical occlusal position to other directions may be associated with tooth impaction or delayed eruption and highlight the potential of GC position as an early radiographic marker for eruption disturbances.

Key words: permanent dentition, tooth eruption, gubernaculum, cone beam computed tomography.

Received: 10 07 2025

Accepted for publishing: 22 06 2026

¹Dentist. Universidade Federal de Minas Gerais, Belo Horizonte/ Minas Gerais, Brazil

²Universidade Federal de Minas Gerais, School of Dentistry, Department of Oral Surgery, Pathology, and Clinical Dentistry. Belo Horizonte/Minas Gerais, Brazil

³Universidade Federal de Minas Gerais, School of Dentistry, Department of Child and Adolescent Oral Health. Belo Horizonte/Minas Gerais, Brazil

Address correspondence to Cláudia Borges Brasileiro, Department of Oral Surgery, Pathology, and Clinical Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, 31270-901, Belo Horizonte/MG, Brazil.

E-mail address: claudiabb@odonto.ufmg.br



	Baltic Dental and Maxillofacial Journal

2026, Vol. 28, No. 2 CONTENTS REVIEWS Lag screw vs miniplate fixation in treatment of condylar neck fractures: A systematic review Augustinas Buškus, Jan Pavel Rokicki, Simas Steponaitis 35-39 SCIENTIFIC ARTICLES Multinucleated giant cells: Do they have an impact on prognosis and overall survival in oral squamous cell carcinoma? Kuldeep Singh, Priya Kumar, Aadithya B. Urs 40-46 REVIEWS Relation of gubernacular canal and permanent dentition by Nolla stage: Cone-beam computed tomography analysis Ana Luisa Marques Bemquerer, Larissa Marques Bemquerer, Lucas Guimarães Abreu, Cláudia Borges Brasileiro 47-52 CASE REPORTS The management dilemma of alveolar bone fracture: Case report and narrative review Oumayma El Yacoubi, Akram Belmehdi, Bassima Chami 53-58 Focal reactive gingival overgrowth: Diagnosis, histopathological evaluation and management Meenu Taneja Bhasin, Karuna Joshi, Gunjan Gupta, C. S. Baiju, Shefali Malik, Sunny Mavi 59-64 © 2026 Stomatologija		Stomatologija 2026; 28 (2): 47-52 64 KB Relation of gubernacular canal and permanent dentition by Nolla stage: Cone-beam computed tomography analysis Ana Luisa Marques Bemquerer¹, Larissa Marques Bemquerer², Lucas Guimarães Abreu³, Cláudia Borges Brasileiro² Summary Background. The aim of the study was to evaluate an association between the stages of permanent dentition development, based on Nolla stages, and the characteristics of the gubernacular canal (GC), and to investigate the correlation between eruption process failures and the GC. Material and methods. This observational, cross-sectional, and retrospective study analyzed tomographic scans from 164 patients, encompassing 244 included teeth. The teeth were categorized into ten and three stages according to Nolla stages and were evaluated the position of the GC relative to the dental follicle, the alignment of the GC relative to the tooth and the direction of the GC relative to the bone cortices. The teeth were also classifi ed as: normal impacted, normal non-impacted, delayed impacted, and delayed non-impacted. Results. Of the total sample, 162 exhibited GC (71.1%). Statistical signifi cance was noted when exploring the association between Nolla stage, categorized into ten and three stages, and the position of GC in relation to the follicle (p=0.023 and p=0.005, respectively). Furthermore, an association was identifi ed between teeth with delayed (Nolla stage equal to or greater than 8) and impacted eruption and the position of GC in relation to the follicle (p=0.004) showing a shifting of the canal's position as the root develops, from the occlusal position to other positions. Conclusions. The fi ndings of this study suggest that displacement of the GC from its typical occlusal position to other directions may be associated with tooth impaction or delayed eruption and highlight the potential of GC position as an early radiographic marker for eruption disturbances. Key words: permanent dentition, tooth eruption, gubernaculum, cone beam computed tomography. Received: 10 07 2025 Accepted for publishing: 22 06 2026 ¹Dentist. Universidade Federal de Minas Gerais, Belo Horizonte/ Minas Gerais, Brazil ²Universidade Federal de Minas Gerais, School of Dentistry, Department of Oral Surgery, Pathology, and Clinical Dentistry. Belo Horizonte/Minas Gerais, Brazil ³Universidade Federal de Minas Gerais, School of Dentistry, Department of Child and Adolescent Oral Health. Belo Horizonte/Minas Gerais, Brazil Address correspondence to Cláudia Borges Brasileiro, Department of Oral Surgery, Pathology, and Clinical Dentistry, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, 31270-901, Belo Horizonte/MG, Brazil. E-mail address: claudiabb@odonto.ufmg.br