Fused/geminated teeth may cause esthetic, spacing, periodontal, eruption and caries problems. The present study describes two clinical cases of similar dental fusion and compromises different and individualized treatment methods based on the proper treatment needs of a patient. In the first case the fused tooth was separated and the supernumerary tooth was extracted intraorally. In the second case, due to the union structure of a fused tooth up to the apex, extraction and extraoral separation was considered a better alternative than the separation of the fused tooth intraorally. Clinical and radiographic controls of the two cases revealed that the teeth were symptom-free and all clinical and radiographic findings were within normal limits after the long term follow-up periods. Following careful clinical and radiographic examination and diagnosis, extraoral hemi-section and immediate replantation may be considered as an alternative treatment in appropriate cases where a permanent tooth is fused with a supernumerary one.
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J Dent
December 2024
OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, KU Leuven, Leuven, Belgium; Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden. Electronic address:
BMC Oral Health
December 2024
Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Jinan, China.
Background: This study aims to evaluate the impact of different thresholds and voxel sizes on the accuracy of Cone-beam computed tomography (CBCT) tooth reconstruction and to assess the accuracy of fused CBCT and intraoral scanning (IOS) tooth models using curvature continuity algorithms under varying thresholds and voxel conditions.
Methods: Thirty-two isolated teeth were digitized using IOS and CBCT at two voxel sizes and five threshold settings. Crown-root fusion was performed using a curvature continuity algorithm.
Plast Aesthet Nurs (Phila)
December 2024
Sowmya Srinivas, BDS, MDS, PhD, is an Assistant Professor at the Department of Prosthodontics, JSS Dental College and Hospital, JSS Academy of Higher Education and Research, Mysore, Karnataka, India.
Placing an implant immediately into extraction sockets provides a distinct advantage over delayed placement, eliminating the need for a 4 to 6 months waiting period for bone formation. However, when patients present with hypothyroidism, the feasibility of immediate placement of dental implants becomes uncertain. This case involved a hypothyroid woman in her late 60s with loose lower anterior teeth.
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December 2024
College of Science and Engineering, Flinders University of South Australia, Adelaide, Australia.
Well-preserved specimens of a new species of arthrodiran placoderm, sp. nov. (Middle Devonian of Victoria, Australia), reveals previously unknown information on the dermal skeleton, body-shape and dentition of the wide-spread genus .
View Article and Find Full Text PDFBMC Oral Health
December 2024
Department of Pediatric Dentistry, Dental Research Institute, Pusan National University Dental Hospital, 20 Geumo-Ro, Mulgeum-Eup, Yangsan-Si, Gyeongsangnam-Do, 50612, Republic of Korea.
Background: Preservation of a healthy periodontium is critical for the long-term success of restored teeth. In cases of extensive caries, tooth fracture, inadequate crown length, and increased esthetic demands, the restorative margins need to be placed apical to the gingival margin. Violation of the biological width due to dental trauma frequently appears in clinical practice.
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