A case of supernumerary primary and permanent canines |
| |
| Institution: | 1. Pulp Biology and Endodontics Section, Tokyo Medical and Dental University, Tokyo, Japan;2. Advanced Microendodontics, PC, Plano, Texas;1. Ecology and Evolution Research Group (IPNA-CSIC), La Laguna, Tenerife, Canary Islands, Spain;2. Parasitology, Ecology and Genetics Department, Faculty of Biology, University of La Laguna, La Laguna, Tenerife, Canary Islands, Spain;3. System Engineering and Automation, Computer Architecture and Technology Department, Faculty of Physics, University of La Laguna, La Laguna, Tenerife, Canary Islands, Spain;4. Research Unit of Biodiversity (UO-CSIC-PA), Oviedo University, Mieres, Spain;1. Department of Oral and Maxillofacial Surgery - St. Petersburg Pavlov State Medical University, Savushkina srt., 8/2, St., Petersburg, 197341, Russia;2. Oral and Maxillofacial Surgery Department, Lille 2 University, hôpital Roger-Salengro, boulevard du Professeur-Emile-Laine, 59037 Lille cedex, France;1. Department of Oncology and Diagnostic Sciences, University of Maryland School of Dentistry, Baltimore, Maryland;2. Private Practice, Washington, District of Columbia |
| |
| Abstract: | A case of supernumerary primary and permanent canines is presented. A 9Y4M-old boy was referred to our clinic for consultation regarding a maxillary supernumerary primary canine. An oral examination showed 2 primary canines with a similar morphology between the maxillary left lateral incisor and first primary molar. The primary canine in the opposite quadrant had the appearance of a fused-tooth, with composite resin restoration seen in the border. Orthopantomography revealed that permanent successors were present for each primary tooth in the maxillary left region, whereas only a single permanent canine was developing in the opposite quadrant. The 2 primary canines in the maxillary left region were extracted at 9Y4M. The mesially located permanent canine emerged into the oral cavity at 10Y1M and was extracted at 10Y9M. At 12Y2M, the other permanent canine located in the distal position had nearly reached the occlusal plane and the maxillary right permanent canine had arrived at the occlusal plane. Dental age was evaluated by assessing the tooth formation stages in 4 orthopantomographs taken between 8Y5M and 12Y2M, and found to be nearly the same as chronological age. However, the dental ages of the maxillary left permanent canine that had erupted earlier than the one located distally and of the left permanent canine were approximately 1 year behind chronological age. In addition, the dental age of the left permanent canine located distally was 2.5 years behind until the patient reached the age of 10Y9M, after which tooth development was accelerated following extraction of the mesially located permanent tooth. |
| |
| Keywords: | Chronological age Dental age Primary canine Supernumerary tooth Tooth extraction |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
