Case 1. A female, leucoderma, Brazilian patient, aged 7 years and 3 months, presenting mouth breathing and skeletal Class II, division 2 malocclusion, sought a private clinic for orthodontic treatment. The initial panoramic radiograph revealed no abnormalities in the dentition ().\nOrthodontic treatment started two years later, when the patient was aged 9 years and 4 months. The corrective phase of the treatment occurred after the interceptive phase. For the treatment of the Class II malocclusion, an orthopedic expansion device across the upper and lower arches was placed over a period of 12 months. After this period, a lingual bar was adapted, and a follow-up radiograph was required because tooth 84 exhibited no physiological mobility and was the last deciduous teeth to remain in the oral cavity. Control radiographs obtained at 31 and 38 months after the first initial radiographic assessment revealed the early formation of a supernumerary tooth in the right mandibular premolar region (Figures and ). There were no reports of supernumerary teeth in the family. Due to its location, surgical removal was indicated.\nBefore beginning the second phase of the treatment, additional tests and a new panoramic radiograph were requested, which revealed the formation of a supplemental supernumerary tooth, this time in the left mandibular premolar region (), which was also surgically removed.\nControl panoramic radiographs taken at two different moments along the orthodontic treatment demonstrated no evidence of further supernumerary teeth ().
A 19-month-old spayed female Burmese had recently been treated for epiphora. During that clinical examination, the referring veterinarian noticed moderate gingivitis and calculus accumulation. On referral to CADS, bilateral supernumerary (SN) maxillary fourth premolar teeth were diagnosed (), with associated stage 3 periodontal disease (PD3). SN 108 and SN 208 were positioned palatal to the normal maxillary fourth premolar teeth. The supernumerary teeth were orientated in the same manner as the normal teeth; that is, the mesiobuccal and distobuccal roots were buccally situated and the mesiopalatal root, palatally situated (). PD3 was also diagnosed at 206, 209, 302, 401 and 402, and tooth resorption (TR) at 309 and 409. Closed extraction of 206, 209, 302, 401 and 402 was performed, without elevating a mucogingival flap, while open extractions were performed on SN 108, SN 208, 309 and 409 (), by elevating a mucogingival flap. The SN 108 and SN 208 surgical sites were not sutured closed and were allowed to heal by second intention.