A 10-year-old Caucasian girl was referred to the paediatric dentistry clinic with the chief complaint of delayed eruption of the permanent maxillary anterior teeth. There was no significant medical history and no family history of dental anomalies. The patient was a healthy child with no mental retardation, normal facial appearance, and no skeletal or other abnormalities suggestive of a systemic syndrome. She was the first child of a nonconsanguineous marriage, and her parents had no hereditary peculiarities.\nIntraoral examination revealed the presence of over-retained primary maxillary anterior teeth. The patient was in the mixed dentition stage and had a Class I molar relationship (Figures –). Oral hygiene was fair, resulting in multiple carious lesions.\nRadiographic examination showed 9 retained supernumerary teeth: 2 mesiodens, 4 in the mandibular left and right premolar regions, 2 in the maxillary right premolar region, and 1 in the maxillary right canine region (Figures -). Panoramic radiographs of the patient's parents showed no pathology or supernumerary teeth; however, her 2-year-old brother was not evaluated due to his young age.\nThe proposed treatment plan consisted of extraction of the retained supernumerary teeth and associated primary anterior and molar teeth in order to allow the permanent teeth to erupt. The treatment plan was explained to the patient and her family. With their permission, 20 teeth were extracted under general anesthesia (11 primary teeth and 9 impacted supernumerary teeth) (Figures -).\nFigures – shows an intraoral view and panoramic radiograph of the patient 1 month after the extractions. The patient was also provided with removable space maintainers and routine clinical and radiographic follow-up was performed at 6, 12, and 24 months in order to detect any possible delayed appearance of new supernumerary teeth. shows the panoramic radiographs of 6th and 12th months.\nAfter 2 years of follow-up, 2 additional supernumerary teeth were observed, 1 in the maxillary left premolar region and 1 in the maxillary anterior region (). In all other regions, eruption of the permanent premolars was normal. Extraction of the new supernumerary teeth was performed (Figures -), and orthodontic treatment was initiated.\nAt the end of a 3-year follow-up, orthodontic treatment using fixed mechanics was shown to have achieved good esthetics with an ideal overjet and overbite relation (Figures – and ). An Essix appliance was constructed for retention.\nPanoramic radiograph of the younger brother of the patients' at age 5 showed an impacted supernumerary tooth in the mandibular left canine region (). His follow-up visits are also continuing; however the extraction the supernumerary tooth was delayed until the eruption time of premolars.
An 8-year-old spayed female Burmese displayed sudden onset clinical signs of pawing at its face, mildly traumatising its left lip. On oral examination, an SN 208 was found palatal to the normal left maxillary fourth premolar tooth (). The supernumerary tooth was situated in a reverse and mirror position to the normal 208, so that the distal root was positioned mesially, the mesiopalatal root positioned palatodistally and the mesiobuccal root positioned adjacent to the normal 208 distal root. PD3 was diagnosed at 108, 109 and 208, and TR of 309. Closed extraction was performed at 109. The SN 208, as well as 108, 208 and 309, were extracted using the open extraction technique. The SN 208 extraction site was allowed to heal by second intention. The owner stated at the follow-up consultation that the cat did not paw at its face again after the surgery