Table 1 The detailed characteristics and treatment approaches of the included cases
First author | Year of publication | Country | Age | Sex | Treatment | Treatment duration |
|---|---|---|---|---|---|---|
Frame [14] | 1988 | Britain | 9 | Male | Extraction of all primary and supernumerary teeth to allow the natural eruption. Thirteen permanent teeth partially or completely spontaneously erupted during observation. Orthodontic treatment. | 4 years |
Frohberg [19] | 1995 | America | 11 | Female | Sequentially extraction of the primary and supernumerary teeth Surgical exposure of the impacted permanent teeth for natural eruption. Combined orthognathic and orthodontic treatment. | Unknown |
Angle [16] | 2005 | America | 10 | Female | Extraction of 10 supernumerary teeth. Surgical exposure of impacted incisors and upper canines with orthodontic traction. Exposure the entire clinical crowns of incisors by gingivectomy. Then surgical exposure of mandibular canines and all first premolars for natural eruption. Extraction of the mandibular second premolars and orthodontic treatment. Implants supported prostheses to replace 12 and 22. | 8 years |
Farronato [15] | 2009 | Italy | 28 | Male | Extraction of all primary and 6 supernumerary teeth. Surgical exposure of 11 impacted teeth with orthodontic traction. Orthodontic treatment. Crown restoration for 13–23 for esthetic motivation. | Unknown |
Park [18] | 2013 | Asian | 12 | Male | Extraction of 9 primary teeth and 7 supernumerary teeth. Observation for possible spontaneous eruption of permanent teeth over 9 months. Surgical exposure combined with orthodontic traction of 32 and 42 which failed to erupt spontaneously. Combined orthognathic and orthodontic treatment. Implants supported prostheses to replace 12, 23, 33, and 43. | 12 years |
Caucasian | 14 | Female | Extraction of all primary and supernumerary teeth. Maxillary expansion. Surgical exposure of 7 impacted teeth with orthodontic traction. Combined orthognathic and orthodontic treatment. | 4 years | ||
Rocha [13] | 2014 | Brazil | 22 | Female | Extraction of the 3 supernumerary teeth. Sequentially surgical exposure of 11 impacted teeth with orthodontic traction. Orthodontic treatment. | 13 years |
Cimen [12] | 2015 | Turkey | 18 | Male | Extraction of the 3 supernumerary teeth. Surgical exposure of all 10 impacted teeth with orthodontic traction under general anesthesia. Combined orthognathic and orthodontic treatment. Implants supported prostheses to replace 15–24. | 2 years |
Li [17] | 2016 | China | 23 | Male | Extraction of all primary and 9 supernumerary teeth. Surgical exposure of 4 impacted teeth with orthodontic traction. Orthodontic treatment. Implants supported prostheses to restore 45, 46. | Unknown |