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Macdonald AA, Ziehmer B, Kitchener AC, Gelang M, Åblad B, Lintonsson R, von Pückler K, Schaub S, Kiefer I, Schwarz T. A Computed Tomographic Study of the Molar Teeth of Babyrousa spp. J Vet Dent 2024:8987564241248818. [PMID: 38706174 DOI: 10.1177/08987564241248818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
A photographic and computed tomography (CT) scanning study was carried out on 295 molar teeth of 18 adult male Babyrousa babyrussa skulls and 8 skulls of Babyrousa celebensis including seven adult males and one adult female. The occlusal morphology of the permanent maxillary and mandibular molar teeth of B. babyrussa was very similar to that of B. celebensis. Most B. babyrussa maxillary molar teeth had six roots, with small numbers of teeth having four, five or seven roots. A similar pattern was suggested in B. celebensis. Mandibular molar teeth had between four and eight roots. Tooth roots of maxillary and mandibular first and second molar teeth were largely tapering, rod-like structures. The roots of the right and left maxillary third molar teeth had a more complex arrangement; some were inserted almost vertically into the maxilla; others were orientated in a more distal direction. The mesial and distal roots were splayed in appearance. The right and left mandibular third molar tooth roots retained elements of the open 'C' shape and were generally orientated distally. The pulp chambers were arched to fit under the main cusps in all molar teeth. Pulp canals were variable in number.
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Affiliation(s)
- Alastair A Macdonald
- The Royal (Dick) School of Veterinary Studies and the Roslin Institute, The University of Edinburgh, Midlothian, UK
| | - Bianca Ziehmer
- Department of Viticulture and Agriculture, Ministry of Economic Affairs, Transport, Agriculture and Viticulture Rhineland Palatinate (MWVLW), Mainz, Germany
| | - Andrew C Kitchener
- Department of Natural Sciences, National Museums Scotland, Edinburgh, UK
| | - Magnus Gelang
- Göteborgs Naturhistoriska Museum, Göteborg, Museivägen, Germany
| | - Björn Åblad
- Bildenheten, Gjutjärnsgatan, Blå Stjärnans Djursjukhus AB, Goteborg, Sweden
| | - Ruth Lintonsson
- Bildenheten, Gjutjärnsgatan, Blå Stjärnans Djursjukhus AB, Goteborg, Sweden
| | - Kerstin von Pückler
- Radiologie, Justus-Liebig Universität, Justus-Liebig-Universität Giessen Klinik für Geburtshilfe Gynäkologie und Andrologie der Groß- und Kleintiere mit Tierärztlicher Ambulanz, Giessen, Hessen, Germany
| | - Sebastian Schaub
- Radiologie, Justus-Liebig Universität, Justus-Liebig-Universität Giessen Klinik für Geburtshilfe Gynäkologie und Andrologie der Groß- und Kleintiere mit Tierärztlicher Ambulanz, Giessen, Hessen, Germany
| | - Ingmar Kiefer
- Klinik für Kleintiere, Universität Leipzig Veterinärmedizinische Fakultät, Leipzig, Sachsen, Germany
| | - Tobias Schwarz
- The Royal (Dick) School of Veterinary Studies and the Roslin Institute, The University of Edinburgh, Midlothian, UK
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Macdonald AA, Ziehmer B, Kitchener AC, Gelang M, Åblad B, Lintonsson R, von Pückler K, Schaub S, Kiefer I, Schwarz T. A Computed Tomographic Study of the Premolar Teeth of Babyrousa spp. J Vet Dent 2024; 41:31-42. [PMID: 36998227 PMCID: PMC10676034 DOI: 10.1177/08987564231166551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
Abstract
A photographic and computed tomography (CT) scanning study was carried out on the premolar teeth of 18 adult male Babyrousa babyrussa skulls, 10 skulls of Babyrousa celebensis, including 6 adult males, 1 adult female, 1 subadult male, 1 subadult female, and 1 juvenile male. The occlusal morphology of the permanent maxillary premolar teeth of B. babyrussa was very similar to that of B. celebensis. Almost all the maxillary third premolar teeth (107/207) had 2 roots, whereas maxillary fourth premolar teeth (108/208) had 3 or 4 roots. All of the mesial tooth roots of 107/207 and 108/208 were tapering rod-like structures; each contained a single pulp canal. Almost all distal roots of 107/207 were "C" shaped and contained 2 pulp canals. The 108/208 palatal roots were "C" shaped and contained 2 pulp canals. The mesial and distal roots of the mandibular third premolar teeth (307/407) teeth were uniformly rod-like, as were the mesial roots of the mandibular fourth premolar teeth (308/408) teeth. The distal roots of the 308/408 teeth were "C" shaped. All B. babyrussa 307/407 teeth have a single pulp canal located in each of the mesial and distal roots. The 308/408 mesial tooth root contained 1 pulp canal. In all but 3 of the 36 distal 308/408 roots of B. babyrussa teeth and in 7 of the 14 distal roots of B. celebensis teeth there was a single pulp canal; in the other 7 teeth there were 2 pulp canals. Each of the 3 medial roots contained 1 pulp canal.
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Affiliation(s)
- Alastair A. Macdonald
- Royal (Dick) School of Veterinary Studies & The Roslin Institute, University of Edinburgh, Edinburgh, UK
| | - Bianca Ziehmer
- Department of Viticulture and Agriculture, Ministry of Economic Affairs, Transport, Agriculture and Viticulture Rhineland Palatinate (MWVLW), Mainz, Germany
| | - Andrew C. Kitchener
- Department of Natural Sciences, National Museums Scotland, Edinburgh, UK
- Institute of Geography, School of Geosciences, University of Edinburgh, Edinburgh, UK
| | | | - Björn Åblad
- Blåstjärnans Djursjukhus, Bildenheten, Göteborg, Sweden
| | | | - Kerstin von Pückler
- Justus-Liebig-Universität Giessen, Klinik für Kleintiere, Radiologie, Justus-Liebig Universität, Gießen, Germany
| | - Sebastian Schaub
- Justus-Liebig-Universität Giessen, Klinik für Kleintiere, Radiologie, Justus-Liebig Universität, Gießen, Germany
| | - Ingmar Kiefer
- Universität Leipzig, Veterinärmedizinische Fakultät, Klinik für Kleintiere, Leipzig, Germany
| | - Tobias Schwarz
- Royal (Dick) School of Veterinary Studies & The Roslin Institute, University of Edinburgh, Edinburgh, UK
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Macdonald A. Anomalous erosion patterns on the cheek teeth of babirusa (genus Babyrousa). CAN J ZOOL 2021. [DOI: 10.1139/cjz-2020-0173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Two types of anomalous erosive wear, designated “Wear” and “Groove”, were found in the molar teeth of adult babirusa (genus Babyrousa Perry, 1811) species from Buru or the Sula Islands and Sulawesi, Indonesia. A survey of 590 specimens of babirusa crania and mandibles from international museums and private collections revealed their presence in 20 of 187 specimens from Buru or the Sula Islands, in 99 of 391 specimens from Sulawesi, and in 4 of 31 subfossil specimens from South Sulawesi. “N_Wear” comprised a discrete indentation or almost circular erosion of the enamel and underlying dentine in a molar tooth; “W_Wear” comprised tooth indentations of irregular shape larger than 7 mm × 7 mm in size; “E_Wear” comprised extensive tooth indentation. “Wear” anomalies were found on 10% of specimens from Buru or the Sula Islands and on 17% of all Sulawesi crania and mandibles. It was hypothesised that tooth grinding of the abrasive seeds of the wild banana (Musa balbisiana Colla) initiated this anomaly. Groove was a deep, oval-shaped cleft cut into the enamel and dentine between two molar teeth. Groove anomalies were evident in 3% of Buru or the Sula Islands specimens and in 12% of all Sulawesi specimens. No conclusion was reached regarding the initiator of the Groove anomaly.
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Affiliation(s)
- A.A. Macdonald
- Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush Campus, Midlothian EH25 9RG, Scotland
- Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush Campus, Midlothian EH25 9RG, Scotland
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