Vetnews | Januarie 2025 40 « BACK TO CONTENTS Veterinary Dentistry and Maxillofacial Surgery Referrals Veterinary Dentistry and Maxillofacial Clinic, Private Bag X04, Onderstepoort, 0110 Veterinary Dentistry and Maxillofacial Clinic, Onderstepoort Veterinary Academic Hospital, Faculty of Veterinary Science, University of Pretoria, Old Soutpan Road (M35), Onderstepoort, South Africa Tel: +27 (0)12 529 8276, Fax: +27 (0) 12 529 8479, e-mail: sadent@mweb.co.za, website: www.vetdentsa.co.za, Facebook: Vetdent SA barriers like dense fibrous tissue or a tumour blocking its path (impacted tooth), alternatively, lack of the necessary eruptive forces can result in a tooth to become embedded (Bellei et al., 2019). Should an unerupted tooth be left untreated, a dentigerous cyst can form which can invade the nasal cavity or lead to a weakening of the surrounding bone and subsequently pathological fractures (D’Astous, 2011). Resorption of teeth adjacent to a cystic structure can also occur (Bellei et al., 2019). Treatment options for an unerupted tooth include surgical extraction, orthodontic extrusion of the tooth or an operculectomy, depending on the presentation and the age of the patient at initial presentation. Should an impacted tooth be discovered while the teeth can still erupt (patient less than 7 months of age), an operculectomy as discussed in this case, can be performed as the tooth might still have eruptive forces. References: BELLEI, E., FERRO, S., ZINI, E. & GRACIS, M. 2019. A clinical, radiographic and histological study of unerupted teeth in dogs and cats: 73 cases (2001–2018). Frontiers in veterinary science, 6, 357. BELLOWS, J. 2011. Tooth eruption and exfoliation in dogs and cats. D’ASTOUS, J. 2011. An overview of dentigerous cysts in dogs and cats. The Canadian Veterinary Journal, 52, 905. HALE, F. A. 2005. Juvenile veterinary dentistry. Veterinary Clinics: Small Animal Practice, 35, 789-817. WALLIS, C., SOLMI, F., PESCI, I., DESFORGES, N. & HOLCOMBE, L. J. 2023. Development of Yorkshire Terrier Dentition. Veterinary Sciences, 10, 406. v Table 1. The eruption times of primary and secondary teeth in dogs (Hale, 2005). Figure 6. (Left) Dental radiographs of the rostral maxilla and mandible show the erupted mandibular canines as well as the crowding of the left mandibular 2nd incisor tooth (302) Figure 7. (Right) Oral view of the right mandible showing the unerupted (impacted) incisor teeth Figure 8. The left mandible similar to the right, has healed and all premolar and molar teeth have erupted Primary/Deciduous teeth (weeks) Secondary / Permanent teeth (months) Incisors 3-4 3-4 Canines 3 4-6 Pre-molars 4-12 4-6 Molars 5-7 Regulars I Dental Column
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