| In recent years,many of the hospital patients teeth increasing the proportion of patients,the majority of patients with mixed dentition orthodontic treatment at a number of teeth was found,because the impact of orthodontic treatment and long-term retention for possible development of diseases such as cysts and multi-tooth extraction.Supernumerary teeth,also known as extra teeth,teeth are more than the normal number of teeth,the number can be 3 or even 1～5～6 range.Its mostly cylindrical or conical shape,there is also similar to those of normal-shaped teeth.Abroad reported incidence of 1.04～2.00%,reported in 1%to 3%.Maxillary than mandibular,anterior teeth than posterior teeth area.Supernumerary teeth can occur in any part of arch,90%～98%occurred in maxilla, was particularly prevalent in the maxillary anterior teeth.Supernumerary teeth can sometimes precede or ectopic eruption of permanent teeth eruption of permanent teeth lip palate in the normal side(buccal lingual) and so on,usually affecting the normal order of permanent teeth.Some additional teeth in the upper and lower jaw is buried in the eruption instead.The purpose of this paper is substantial for the clinical dental ambushed and review of the literature review,the combination of clinical cases,to integrated assessment of many ambushes teeth positioning accuracy of the preoperative,surgical access,timing of surgery and so on.Text will be adopted for a variety of methods of preoperative localization options, discuss the timing of operation,a large number of clinical dental ambushed supernumerary patients,and then select from five cases of typical and rare cases of ambush supernumerary teeth analysis.Dental x-ray derived parallax method,CT scanning can be more accurate preoperative localization,and finally come to light of the literature and clinical ambushed surgical removal of teeth and the early detection of non-overlapping Permanent teeth,and is located in Permanent teeth crown,removal as soon as possible.
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